Spray apparatus for heat insulating material

Abstract

The present invention relates to an insulation spraying device capable of attaching an insulation material to a construction surface using a spraying method. An insulation spraying device according to one embodiment of the present invention comprises: a crushing device for crushing an insulation material raw material into insulation particles capable of being sprayed; a blower for blowing air; a blower pipe configured to allow the insulation particles and the air blown from the blower to flow together with the air blown from the blower; a nozzle assembly connected to the blower pipe to spray the insulation particles onto a construction surface; and a binder supply device for supplying a binder to the nozzle assembly to attach the insulation particles to the construction surface, wherein the nozzle assembly comprises: a main nozzle having a main nozzle nozzle for spraying the insulation particles; and a sub-nozzle coupled to the main nozzle to spray the binder onto the insulation particles sprayed by the main nozzle.

Description

Technology Field

[0001] The present invention relates to a thermal insulation spraying device, and more specifically, to a thermal insulation spraying device capable of attaching thermal insulation to a construction surface by a spraying method. Background Technology

[0003] When constructing a building, a method is used to insulate the construction surface by spraying urethane onto the interior and exterior walls and ceilings of the building.

[0004] Urethane insulation applied to the construction surface using the spray method has excellent sound absorption and thermal insulation effects, but it has the disadvantage of generating a large amount of harmful gas in the event of a fire, which can cause casualties.

[0005] Meanwhile, synthetic mineral fibers such as glass wool and mineral wool (rock wool) are used as thermal insulation, sound insulation, and sound-absorbing materials in various industrial fields, and their safety has been proven compared to other products in the event of a fire.

[0006] Artificial mineral fibers such as glass wool and mineral wool are difficult to attach to surfaces such as steel structures, concrete surfaces, and wood, so they are manufactured and installed in the form of boards or panels.

[0007] However, during the construction of buildings, ceilings where numerous pipes or ducts are arranged frequently have very complex shapes and structures, and in such cases, there is a problem that imposes restrictions on the installation of boards or panels.

[0008] Spraying methods can be used to insulate construction surfaces with complex shapes and structures using insulating materials such as synthetic mineral fibers. Since the thermal insulation performance of a construction surface is determined by the type and thickness of the insulating material, it is very important to maintain a consistent coating thickness and ensure that the insulating material integrates with the construction surface during the spraying process.

[0009] Therefore, in order to apply insulation to a construction surface using a spray method, it is necessary to have a device capable of crushing the insulation into sprayable particle form and evenly mixing a binder into the insulation particles to spray them. Prior art literature

[0011] Korean Registered Patent No. 0936787 (2010.01.06.) The problem to be solved

[0012] The present invention has been devised in consideration of the above-mentioned points, and aims to provide an insulation spraying device that can easily attach insulation material to construction surfaces such as inner and outer walls or ceilings of a building using a spraying method.

[0013] In addition, the present invention aims to provide an insulating material spraying device capable of performing the processes of crushing the insulating material into sprayable particles, uniformly mixing a binder into the insulating material particles, and spraying the insulating material particles in a batch.

[0014] The objectives of the present invention are not limited to those described above, and other objectives not mentioned will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0016] A thermal insulation spraying device according to one embodiment of the present invention for solving the problem described above comprises: a crushing device for crushing a thermal insulation material raw material into thermal insulation particles capable of being sprayed; a blower for blowing air; a blower pipe configured to allow the thermal insulation particles and the air blown from the blower to flow together with the air blown from the blower; a nozzle assembly connected to the blower pipe for spraying the thermal insulation particles onto a construction surface; and a binder supply device for supplying a binder to the nozzle assembly for attaching the thermal insulation particles to the construction surface, wherein the nozzle assembly comprises: a main nozzle having a main nozzle nozzle for spraying the thermal insulation particles; and a sub-nozzle coupled to the main nozzle for spraying the binder onto the thermal insulation particles sprayed by the main nozzle.

[0017] The above sub-nozzle may include an outer sub-nozzle positioned outside the main nozzle so as to spray the binder onto the insulating material particles while the insulating material particles are sprayed into the air through the main nozzle nozzle.

[0018] The above outer sub-nozzle may be configured to spray the binder toward the insulating material particles in a spraying direction inclined with respect to the spraying direction of the insulating material particles.

[0019] A plurality of the above-mentioned outer sub-nozzles may be spaced apart in a circumferential direction along the outer surface of the main nozzle.

[0020] The binder supply device comprises a first supply device for supplying a first material constituting the binder; and a second supply device for supplying a second material constituting the binder, wherein at least one of the plurality of outer sub-nozzles is connected to the first supply device to spray the first material, and at least another of the plurality of outer sub-nozzles may be connected to the second supply device to spray the second material.

[0021] The nozzle assembly may include a coupler coupled to the main nozzle to support the plurality of outer sub-nozzles.

[0022] The above outer sub-nozzle can be detachably coupled to the coupler.

[0023] The above outer sub-nozzle can be coupled to the coupler so as to be movable in the circumferential direction.

[0024] The outer sub-nozzle above can be tiltably supported on the main nozzle so that the angle between the spraying direction of the insulating material particles and the spraying direction of the outer sub-nozzle above can be changed.

[0025] The nozzle assembly may include a coupler coupled to the main nozzle to support the outer sub-nozzle in a tiltable manner; and a tilting mechanism installed in the coupler to be operated by a user to tilt the outer sub-nozzle.

[0026] The outer sub-nozzle comprises: a rear nozzle body having a rear passage through which the binder can pass; and a front nozzle body having a front passage through which the binder can pass and an outer sub-nozzle nozzle into which the binder is sprayed, wherein the front nozzle body can be angle-adjustable to the rear nozzle body so as to change the arrangement angle of the front passage relative to the rear passage.

[0027] The above-described front nozzle body may be configured to rotate around a rotational center axis perpendicular to the flow direction of the binder through the above-described rear Euro.

[0028] The rear nozzle body may have a curved rear nozzle body contact surface, and the front nozzle body may have a curved front nozzle body contact surface that contacts the rear nozzle body contact surface so as to be angle-adjustable while maintaining contact with the rear nozzle body contact surface.

[0029] The outer sub-nozzle may include a support body coupled to the main nozzle to support the rear nozzle body and the front nozzle body.

[0030] The support body may include: a support body space capable of accommodating at least a portion of the rear nozzle body and at least a portion of the front nozzle body; a first opening connected to the support body space so as to expose the outer sub-nozzle nozzle nozzle to the outside of the support body; a second opening connected to the support body space so as to allow at least a portion of the rear nozzle body to be inserted; and a third opening connected to the support body space so as to allow at least a portion of the front nozzle body to be inserted.

[0031] The above sub-nozzle may include an inner sub-nozzle, at least a portion of which is disposed inside the main nozzle, so as to be able to spray the binder onto the insulating material particles while the insulating material particles pass through the main nozzle flow path inside the main nozzle.

[0032] The binder supply device comprises a first supply device for supplying a first material constituting the binder; and a second supply device for supplying a second material constituting the binder, wherein either the outer sub-nozzle or the inner sub-nozzle is connected to the first supply device to spray the first material, and the other is connected to the second supply device to spray the second material.

[0033] A thermal insulation spraying device according to one embodiment of the present invention includes: a conveyor connected to a crushing device to transport thermal insulation particles that are crushed by the crushing device; a connecting device for introducing thermal insulation particles transported by the conveyor into a blower passage provided inside the blower pipe so that air blown by the blower can flow through it, wherein the connecting device may include: a connecting member having a connecting passage through which the thermal insulation particles can pass, which connects the conveyor and the blower pipe; and an impeller having a blade disposed in the connecting passage, which pushes the thermal insulation particles introduced into the connecting passage toward the blower passage and obstructs the flow of air from the blower passage toward the conveyor through the connecting passage. Effects of the invention

[0035] In the case of the thermal insulation spraying device according to the present invention as described above, thermal insulation particles and a binder can be uniformly mixed during spraying and attached to the construction surface.

[0036] In addition, the insulation spraying device according to the present invention can pulverize the insulation material raw material into insulation particles through a crushing device, and flow the pulverized insulation particles with air blown by a blower to spray the insulation particles and binder together through a nozzle assembly.

[0037] In addition, the thermal insulation spraying device according to the present invention can attach thermal insulation, which was previously attached to the construction surface in the form of boards or panels, to the construction surface by a spraying method. Therefore, it is possible to perform thermal insulation work on construction surfaces with complex shapes and structures, such as ceilings where structures like pipes or ducts are placed.

[0038] The effects of the present invention are not limited to those described above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Brief explanation of the drawing

[0040] FIG. 1 shows an insulating material spraying device according to one embodiment of the present invention. FIGS. 2 and FIGS. 3 are perspective views showing a nozzle assembly of an insulating material spraying device according to one embodiment of the present invention. FIG. 4 is a front view showing a nozzle assembly of an insulating material spraying device according to one embodiment of the present invention. FIG. 5 is an exploded perspective view showing a nozzle assembly of an insulating material spraying device according to one embodiment of the present invention. FIG. 6 is a side cross-sectional view showing a nozzle assembly of an insulating material spraying device according to one embodiment of the present invention. FIGS. 7 and FIGS. 8 are exploded perspective views showing the outer sub-nozzle of the nozzle assembly. FIGS. 9 to 10b are plan views showing the outer sub-nozzle of the nozzle assembly cut. FIG. 11 schematically shows insulation particles being sprayed through a nozzle assembly of an insulation spraying device according to one embodiment of the present invention. FIG. 12 is a front view showing a nozzle assembly according to another embodiment. FIG. 13 is a side cross-sectional view showing a part of a nozzle assembly according to another embodiment. Specific details for implementing the invention

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0042] In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation.

[0043] Furthermore, terms specifically defined in consideration of the structure and operation of the present invention may vary depending on the intent or practice of the user or operator. These terms should be interpreted in a meaning and concept consistent with the technical spirit of the present invention based on the content throughout this specification.

[0044] To clearly explain the present invention, descriptions of parts unrelated to the technical concept of the present invention have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0045] In addition, in various embodiments, components having the same configuration are described using the same reference numerals only in the representative embodiment, and in other embodiments, only configurations different from the representative embodiment are described.

[0046] Throughout the specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "indirectly connected" with other members in between. Furthermore, when a part is described as "including" a component, this may mean that it includes additional components rather than excluding them, unless specifically stated otherwise.

[0047] FIG. 1 shows an insulating material spraying device according to one embodiment of the present invention, and FIG. 2 is a perspective view showing a hole pipe connected to a nozzle assembly of an insulating material spraying device according to one embodiment of the present invention.

[0048] As shown in the drawing, an insulating material spraying device (100) according to one embodiment of the present invention is configured to insulate a construction surface, such as an inner or outer wall or ceiling of a building, using a spraying method. The insulating material spraying device (100) includes a crushing device (110) that crushes an insulating material raw material (M) into insulating material particles (P) that can be sprayed, a conveyor (124) that transports the insulating material particles (P), a blower (143) for blowing air, a blower pipe (145) that flows the insulating material particles (P) and the air blown from the blower (143) together, a connecting device (134) that connects the conveyor (124) and the blower pipe (145), a binder supply device (148) for supplying a binder, and a nozzle assembly (157) capable of spraying the insulating material particles (P) and the binder together. The insulating material used in the insulating material spraying device (100) according to one embodiment of the present invention may be an artificial mineral fiber such as glass wool, mineral wool (rock wool), or various types of insulating material that can be applied by a spraying method.

[0049] The crushing device (110) receives an insulating material raw material (M) and crushes the supplied insulating material raw material (M) into sprayable insulating material particles (P). The insulating material raw material (M) supplied to the crushing device (110) can be in various forms, such as a board, a block, or a lump. The insulating material particles (P) refer to insulating material crushed to a size that can be sprayed through a nozzle assembly (157), and their shape is not limited. The crushing device (110) includes a hopper (111) and a crushing roll (118) installed inside the hopper (111).

[0050] The hopper (111) includes a hopper space (112) for receiving an insulating material raw material (M), an inlet (113) that opens outward to allow the insulating material raw material (M) to be fed, and a hopper passage (114) connecting the hopper space (112) and the conveyor inlet (127) of the conveyor (124). A plurality of slots (115) are arranged on both sides of the hopper passage (114).

[0051] A crushing roll (118) is rotatably installed in the hopper passage (114) of a hopper (111). The crushing roll (118) includes a roll body (119) and a plurality of protrusions (120) disposed on the outer surface of the roll body (119). The protrusions (120) are formed in such a way that at least a portion of them can enter the slot (115) of the hopper (111). When the protrusions (120) enter the slot (115), a gap is formed between the protrusions (120) and the inner surface of the hopper (111).

[0052] The crushing roll (118) can be rotated by a crushing roll drive device (122). Various types of crushing roll drive devices (122) capable of providing rotational force to the crushing roll (118), such as a motor, can be used.

[0053] When the crushing roll (118) is rotated by the crushing roll drive device (122), the protrusion (120) of the crushing roll (118) enters the slot (115) of the hopper (111), and the insulating material raw material (M) can be crushed by being trapped between the protrusion (120) and the inner surface of the hopper (111). The insulating material particles (P) crushed by the crushing roll (118) can pass through the gap between the crushing roll (118) and the inner surface of the hopper (111) and move toward the conveyor (124).

[0054] The crushing device (110) can be changed to various other configurations capable of crushing the insulation material raw material (M) into insulation particles (P), in addition to the configuration shown. For example, the crushing roll (118) may take a configuration including a screw or a blade, and the number of crushing rolls (118) installed can be varied.

[0055] The conveyor (124) is connected to the crushing device (110) to transport insulation material particles (P) that are crushed by the crushing device (110). The conveyor (124) includes a conveyor body (125) and a conveying screw (130) disposed inside the conveyor body (125).

[0056] The conveyor body (125) includes a conveyor passage (126) in which a conveying screw (130) is placed, a conveyor inlet (127) connected to a hopper passage (114) of a hopper (111), and a conveyor outlet (128) connected to a connecting passage (136) of a connecting device (134). Insulating material particles (P) crushed by the crushing device (110) can pass through the conveyor inlet (127), the conveyor passage (126), and the conveyor outlet (128) in sequence to move to the connecting device (134).

[0057] A conveying screw (130) is positioned in a conveyor passage (126) and can convey insulation particles (P) flowing into the conveyor passage (126) toward a conveyor outlet (128). The conveying screw (130) can rotate by receiving rotational force from a conveying screw drive device (132). Various types of conveying screw drive devices (132) capable of providing rotational force to the conveying screw (130), such as a motor, can be used.

[0058] The conveyor (124) can be changed to a different type of conveyor capable of transporting insulating particles (P), in addition to the screw conveyor of the type shown.

[0059] The blower (143) is connected to the blower pipe (145) to blow air for spraying insulation particles (P).

[0060] The air pipe (145) is configured to allow the insulating material particles (P) to flow together with the air blown from the blower (143). Inside the air pipe (145), a blower passage (146) is provided through which the air and insulating material particles (P) can flow. The air pipe (145) is connected to the blower (143) so that the air blown from the blower (143) is introduced, and is connected to the conveyor (124) via a connecting device (134) so ​​that the insulating material particles (P) transported by the conveyor (124) are introduced. Additionally, a nozzle assembly (157) is connected to one end of the air pipe (145).

[0061] The connecting device (134) connects the conveyor (124) and the blower pipe (145) so that the insulating material particles (P) transported by the conveyor (124) can be moved to the blower pipe (145). The insulating material particles (P) discharged through the conveyor outlet (128) of the conveyor (124) can be introduced into the blower passage (146) of the blower pipe (145) through the connecting device (134). The connecting device (134) includes a connecting member (135) that connects the conveyor (124) and the blower pipe (145), and an impeller (138) installed inside the connecting member (135).

[0062] The connecting member (135) has a connecting path (136) through which insulating particles (P) can pass.

[0063] An impeller (138) is rotatably positioned in a connecting passage (136). The impeller (138) includes a plurality of blades (139). When the impeller (138) rotates, the plurality of blades (139) can push insulation particles (P) toward the blower (146). Additionally, the plurality of blades (139) can obstruct or block the flow of air from the blower (146) toward the conveyor (124) through the connecting passage (136). The air flowing from the blower (146) toward the conveyor (124) through the connecting passage (136) can obstruct the movement of insulation particles (P) toward the blower (146) from the conveyor (124). The impeller (138) can obstruct or block the flow of air toward the conveyor (124) through the connecting path (136) and smoothly move the insulation particles (P) toward the blower path (146).

[0064] The impeller (138) can be rotated by an impeller drive device (141). The impeller drive device (141) can be various types capable of providing rotational force to the impeller (138), such as a motor.

[0065] The binder supply device (148) can supply a binder capable of imparting adhesive force to the insulating material particles (P) to the nozzle assembly (157).

[0066] The binder may include various materials capable of imparting adhesion to the thermal insulation particles (P). For example, the binder may include a main component containing adhesive materials such as polyvinyl alcohol and acrylate monomer, and a curing agent containing borax, sodium hydroxide, silica, etc.

[0067] The binder supply device (148) may be configured to mix the main component and the hardener and supply them to the nozzle assembly (157), or to supply the main component and the hardener separately to the nozzle assembly (157).

[0068] In this embodiment, the binder is described as a two-component type comprising a first material and a second material, and the binder supply device (148) supplies the first material and the second material to the nozzle assembly (157), respectively. Hereinafter, the first material or the second material may be referred to as the binder.

[0069] The binder supply device (148) includes a first supply device (149) that supplies a first substance and a second supply device (153) that supplies a second substance. The first supply device (149) may be connected to a nozzle assembly (157) through a first supply pipe (151), and the second supply device (153) may be connected to a nozzle assembly (157) through a second supply pipe (155). The first supply device (149) may be formed in a form including a pump that pumps a first substance in liquid form, and the second supply device (153) may be formed in a form including a pump that pumps a second substance in liquid form.

[0070] The specific configuration of the binder supply device (148) is not limited to that illustrated. For example, the binder supply device (148) may be configured to mix the first material and the second material and supply them to the nozzle assembly (157). Additionally, depending on the number of materials constituting the binder, the binder supply device (148) may include various numbers of supply devices.

[0071] Referring to FIGS. 1 to 11, the nozzle assembly (157) is configured to spray insulating particles (P) and a binder together. That is, the nozzle assembly (157) includes a main nozzle (158) for spraying insulating particles (P) and a plurality of sub-nozzles (162) (183) for spraying a binder.

[0072] The main nozzle (158) is connected to a blower pipe (145) to spray insulation particles (P). The main nozzle (158) has a main nozzle passage (159) through which air and insulation particles (P) can flow, and a main nozzle nozzle (160) for spraying insulation particles (P). The insulation particles (P) can flow along the main nozzle passage (159) and be sprayed out of the nozzle assembly (157) through the main nozzle nozzle (160).

[0073] At least one of the plurality of sub-nozzles (162)(183) is connected to a first supply device (149) through a first supply pipe (151) to spray binder, and at least another of the plurality of sub-nozzles (162)(183) is connected to a second supply device (153) through a second supply pipe (155) to spray binder. The plurality of sub-nozzles (162)(183) includes an outer sub-nozzle (162) positioned outside the main nozzle (158) and an inner sub-nozzle (183) positioned inside the main nozzle (158).

[0074] The outer sub-nozzles (162) are positioned outside the main nozzle (158) so that a binder can be sprayed onto the insulation particles (P) while the insulation particles (P) are sprayed into the air through the main nozzle nozzle (160). Multiple outer sub-nozzles (162) are spaced apart in the circumferential direction along the outer surface of the main nozzle (158). By spraying the binder through the multiple outer sub-nozzles (162), the insulation particles (P) passing through the main nozzle nozzle (160) and the binder can be evenly mixed and reach the construction surface.

[0075] As shown in FIGS. 1 and 2, a plurality of outer sub-nozzles (162) can each be connected to a first supply device (149) through a first supply pipe (151). Accordingly, a first substance supplied from the first supply device (149) can be sprayed through the plurality of outer sub-nozzles (162).

[0076] As shown in FIGS. 2 to 10, a plurality of outer sub-nozzles (162) are coupled to a main nozzle (158) by a coupler (190). The coupler (190) may be formed in the shape of a ring that is coupled to the main nozzle (158) so as to surround the outer surface of the main nozzle (158). The coupler (190) is provided with a plurality of slits (191) into which the plurality of outer sub-nozzles (162) can be engaged. The outer sub-nozzles (162) may be detachably coupled to the coupler (190) in such a way that at least a portion of them is inserted into the slits (191).

[0077] The specific configuration of the coupler (190) is not limited to that shown and can be changed to various other configurations that can connect the outer sub-nozzle (162) to the main nozzle (158).

[0078] The outer sub-nozzle (162) includes a support body (163) coupled to a coupler (190), a rear nozzle body (170) to which a first supply pipe (151) is connected, and a front nozzle body (174) having an outer sub-nozzle nozzle (176) for spraying binder. The rear nozzle body (170) and the front nozzle body (174) are coupled to the support body (163) so that binder can flow from the rear nozzle body (170) to the front nozzle body (174).

[0079] The support body (163) includes a support body space (164) capable of accommodating at least a portion of the rear nozzle body (170) and at least a portion of the front nozzle body (174), and a first opening (165), a second opening (166), and a third opening (167) each connected to the support body space (164). The first opening (165) is connected to the support body space (164) so ​​that the outer sub-nozzle nozzle nozzle (176) of the front nozzle body (174) can be exposed to the outside of the support body (163). The second opening (166) is connected to the support body space (164) so ​​that at least a portion of the rear nozzle body (170) can be inserted. The third opening (167) is connected to the support body space (164) so ​​that at least a portion of the front nozzle body (174) can be inserted.

[0080] The support body (163) has an interlocking portion (168) that can be inserted into the slit (191) of the coupler (190). The support body (163) can be detachably coupled to the coupler (190) in such a way that the interlocking portion (168) engages with the slit (191).

[0081] The rear nozzle body (170) has a rear passage (171) through which a binder can pass. A binder supplied through the first supply pipe (151) can flow to the front nozzle body (174) through the rear passage (171). At one end of the rear nozzle body (170) located in the support body space (164), a rear nozzle body contact surface (172) is provided. The rear nozzle body contact surface (172) may be formed in a concave curved shape so as to maintain contact with the front nozzle body (174). At least a portion of the rear nozzle body (170) is inserted into the second opening (166) of the support body (163) so that the rear nozzle body contact surface (172) is located in the support body space (164). The other end of the rear nozzle body (170) to which the first supply pipe (151) is connected may be located outside the support body (163).

[0082] The front nozzle body (174) has a front passage (175) through which a binder can pass and an outer sub-nozzle nozzle (176) for spraying the binder. At least a portion of the front nozzle body (174) is inserted into the third opening (167) of the support body (163) so that the portion where the front passage (175) and the outer sub-nozzle nozzle (176) are formed is located in the support body space (164). In the support body space (164), the rear passage (171) of the rear nozzle body (170) and the front passage (175) of the front nozzle body (174) are connected. Thus, the binder passing through the rear passage (171) can flow into the front passage (175). The rear passage (171) and the front passage (175) form the outer sub-nozzle passage (181) of the outer sub-nozzle (162). The outer sub-nozzle nozzle nozzle (176) is exposed to the outside of the support body (163) through the first opening (165) of the support body (163). Thus, the binder supplied through the first supply pipe (151) can pass through the outer sub-nozzle flow path (181) and be sprayed to the outside of the outer sub-nozzle (162) through the outer sub-nozzle nozzle nozzle (176). A part of the front nozzle body (174) located in the support body space (164) is provided with a front nozzle body contact surface (177) that contacts the rear nozzle body contact surface (172) of the rear nozzle body (170). The front nozzle body contact surface (177) may be formed in a convex curved shape so as to maintain contact with the rear nozzle body contact surface (172).

[0083] The front nozzle body (174) is connected to the rear nozzle body (170) in an angle-adjustable manner so that the positioning angle of the front flow path (175) relative to the rear flow path (171) can be changed. That is, as shown in FIG. 9, the front nozzle body (174) can rotate around a rotational center axis (C) perpendicular to the flow direction (Df1) of the binder through the rear flow path (171). When the front nozzle body (174) rotates, the front nozzle body contact surface (177) of the front nozzle body (174) remains in contact with the rear nozzle body contact surface (172) of the rear nozzle body (170), and even if the positioning angle of the front flow path (175) relative to the rear flow path (171) is changed, the binder passing through the rear flow path (171) can flow into the front flow path (175).

[0084] As shown in FIG. 9, when the flow direction (Df1) of the binder through the rear channel (171) and the flow direction (Df2) of the binder through the front channel (175) are arranged parallel to each other, the binder passing through the rear channel (171) can pass through the front channel (175) without changing the flow direction and be injected through the outer sub-nozzle nozzle (176).

[0085] Meanwhile, FIGS. 10a and 10b show a change in the arrangement angle of the front flow path (175) relative to the rear flow path (171). As shown in FIG. 10a, when the front nozzle body (174) rotates clockwise at a specific angle relative to the drawing, the flow direction of the binder through the rear flow path (171) (Df1) and the flow direction of the binder through the front flow path (175) (Df2) are arranged non-equilibriumly. In this case, the flow direction of the binder flowing from the rear flow path (171) to the front flow path (175) is changed, thereby changing the direction of the binder injection to a different direction. Additionally, as shown in FIG. 10b, when the front nozzle body (174) rotates counterclockwise at a specific angle relative to the drawing, the flow direction of the binder through the rear passage (171) (Df1) and the flow direction of the binder through the front passage (175) (Df2) are arranged non-equivalently. In this case, the flow direction of the binder flowing from the rear passage (171) to the front passage (175) is changed, thereby changing the injection direction of the binder to another direction.

[0086] The front nozzle body (174) is equipped with a knob (179) for user operation. By operating the knob (179), the user can vary the direction of the binder injection through the outer sub-nozzle (162).

[0087] Referring to FIGS. 6 and FIGS. 11, the outer sub-nozzle (162) is supported on the main nozzle (158) such that the outer sub-nozzle flow path (181) is inclined with respect to the main nozzle flow path (159) of the main nozzle (158). That is, the outer sub-nozzle (162) is positioned to spray a binder toward the insulating particles (P) in an inclined spraying direction (Ds2) with respect to the spraying direction (Ds1) of the insulating particles (P) through the main nozzle (158). By the outer sub-nozzle (162), which is positioned outside the main nozzle (158), spraying the binder obliquely toward the insulating particles (P) sprayed through the main nozzle (158), the binder can be mixed more evenly with the insulating particles (P), and the diffusion or scattering of the insulating particles (P) can be suppressed. In addition, due to the action of the outer sub-nozzle (162), the diffusion angle of the insulating particles (P) through the main nozzle (158) is reduced, so that the insulating particles (P) sprayed from the main nozzle (158) can be more stably concentrated at the target location on the construction surface.

[0088] The configuration of the outer sub-nozzle (162) is not limited to that depicted and can be changed to various other configurations capable of spraying binder from the outside of the main nozzle (158). Additionally, the number of outer sub-nozzles (162) installed or the method of connecting the outer sub-nozzle (162) and the main nozzle (158) can be varied.

[0089] Referring to FIGS. 1 through 6 and FIG. 11, the inner sub-nozzle (183) is positioned inside the main nozzle (158) so that a binder can be sprayed onto the insulating particles (P) while the insulating particles (P) pass through the main nozzle passage (159). The inner sub-nozzle (183) may be positioned parallel to the flow direction of the insulating particles (P) at the center of the main nozzle passage (159). The inner sub-nozzle (183) may be positioned at the center of the main nozzle passage (159) by being supported by a nozzle connecting pipe (187) positioned to penetrate the main nozzle (158).

[0090] The inner sub-nozzle (183) can be connected to the second supply device (153) through the second supply pipe (155) which is connected to the nozzle connecting pipe (187). Accordingly, a binder supplied from the second supply device (153) to the inner sub-nozzle (183) through the second supply pipe (155) and the nozzle connecting pipe (187) can be sprayed through the inner sub-nozzle (183).

[0091] The inner sub-nozzle (183) includes an inner sub-nozzle flow path (184) through which the binder can flow, and an inner sub-nozzle nozzle (185) through which the binder is sprayed. The inner sub-nozzle flow path (184) is arranged parallel to the main nozzle flow path (159) of the main nozzle (158). The inner sub-nozzle (183) can more smoothly mix the binder with the insulating particles (P) by spraying the binder into the center of the flow of the insulating particles (P).

[0092] The nozzle assembly (157) can evenly mix the insulation particles (P) and the binder by spraying insulation particles (P) through the main nozzle (158) and spraying the binder through the outer sub-nozzle (162) and the inner sub-nozzle (183) to adhere to the construction surface.

[0093] Additionally, the nozzle assembly (157) can be used to spray insulating particles (P) and a binder in various ways. For example, although it was previously described that a first material is sprayed through a plurality of outer sub-nozzles (162) and a second material is sprayed through an inner sub-nozzle (183), it is also possible to spray the first material and the second material through a plurality of outer sub-nozzles (162) without using the inner sub-nozzle (183). When all of the plurality of outer sub-nozzles (162) are used, the first material can be sprayed through at least one of the plurality of outer sub-nozzles (162) and the second material can be sprayed through the remaining outer sub-nozzles (162). It is also possible to spray the first material and the second material using only some of the outer sub-nozzles (162), such as two or three of the plurality of outer sub-nozzles (162). Furthermore, it is possible to spray the binder with at least one of the plurality of outer sub-nozzles (162) and spray air with the remaining outer sub-nozzles (162). In this case, the outer sub-nozzle (162) that sprays air can serve to suppress the diffusion or scattering of the insulating material particles (P) sprayed from the main nozzle (158).

[0094] As described above, an insulating material spraying device (100) according to one embodiment of the present invention can pulverize an insulating material raw material (M) into insulating material particles (P) through a crushing device (110), and then flow the pulverized insulating material particles (P) with air blown by a blower (143) to spray the insulating material particles (P) and a binder together through a nozzle assembly (157). Accordingly, the insulating material spraying device (100) according to one embodiment of the present invention can evenly mix the insulating material particles (P) and the binder during spraying and adhere them to the construction surface.

[0095] In addition, the thermal insulation spraying device (100) according to one embodiment of the present invention can attach thermal insulation, which was previously attached to the construction surface in the form of a board or panel, to the construction surface by a spraying method. Therefore, it is possible to perform thermal insulation work on construction surfaces with very complex shapes and structures, such as ceilings where structures such as multiple pipes or ducts are installed.

[0096] FIG. 12 is a front view showing a nozzle assembly according to another embodiment.

[0097] The nozzle assembly (210) shown in FIG. 12 includes a main nozzle (158) for spraying insulating particles (P; see FIG. 11), a plurality of outer sub-nozzles (211) and inner sub-nozzles (183) for spraying a binder, and a coupler (215) for connecting the plurality of outer sub-nozzles (211) to the main nozzle (158). The main nozzle (158) and the inner sub-nozzles (183) are as described above.

[0098] The outer sub-nozzle (211) includes a support body (212) coupled to a coupler (215), a rear nozzle body (170; see FIG. 7) and a front nozzle body (174) coupled to the support body (212). The rear nozzle body (170) and the front nozzle body (174) are as described above. The support body (212) includes an interlocking part (213) for movably coupled to the coupler (215), and most of its configuration, except for the interlocking part (213), is the same as the support body (163) described above.

[0099] The coupler (215) may be formed in the shape of a ring that is coupled to the main nozzle (158) so as to surround the outer surface of the main nozzle (158). The coupler (215) is provided with a coupler groove (216) into which the interlocking portion (213) of the outer sub-nozzle (211) is inserted. The coupler groove (216) may be arranged in a circular shape or in multiple arc shapes on the outer side of the main nozzle (158).

[0100] The outer sub-nozzle (211) is coupled to the coupler (215) in such a way that the interlocking portion (213) is inserted into the coupler groove (216) of the coupler (215). The interlocking portion (213) can move within the coupler groove (216). Thus, the outer sub-nozzle (162) can be moved circumferentially from the outside of the main nozzle (158) and its position can be changed.

[0101] In the nozzle assembly (210) according to the present embodiment, the outer sub-nozzle (211) can be moved in the circumferential direction of the main nozzle (158) to change its position, so the direction of injection of the binder through the outer sub-nozzle (211) can be adjusted in various ways.

[0102] The outer sub-nozzle (211) can be positioned circumferentially on the outer side of the main nozzle (158) in various other ways in addition to the method shown in the drawing.

[0103] FIG. 13 is a side cross-sectional view showing a part of a nozzle assembly according to another embodiment.

[0104] The nozzle assembly (220) shown in FIG. 13 includes a main nozzle (158) for spraying insulating particles (P), a plurality of outer sub-nozzles (221) and inner sub-nozzles (183; see FIG. 6) for spraying a binder, a coupler (226) for connecting the plurality of outer sub-nozzles (221) to the main nozzle (158), and a tilting mechanism (230) installed in the coupler (226) to tilt the outer sub-nozzles (221). The main nozzle (158) and the inner sub-nozzles (183) are as described above.

[0105] The outer sub-nozzle (221) includes a support body (222) supported by the main nozzle (158) via a coupler (226), and a rear nozzle body (170) and a front nozzle body (174) coupled to the support body (222). The rear nozzle body (170) and the front nozzle body (174) are as described above. The support body (222) is configured to support the rear nozzle body (170) and the front nozzle body (174) as the support body (163) described above, and is supported tiltably by the coupler (226) by a pivot part (224).

[0106] The coupler (226) is positioned on the outer surface of the main nozzle (158) to connect the outer sub-nozzle (221) to the main nozzle (158). The coupler (226) may be provided with a bracket (227) that supports the pivot portion (224). Additionally, the coupler (226) may be provided with a recess (228) in which at least a portion of the tilting mechanism (230) can be positioned.

[0107] The tilting mechanism (230) is configured to be operated by a user to tilt the outer sub-nozzle (221). The tilting mechanism (230) includes a rack gear (231) coupled to a support body (222) and a pinion gear (233) supported by a coupler (226) so as to be able to rotate in mesh with the rack gear (231). A knob (235) that can be grasped by the user's hand may be coupled to the pinion gear (233). When the user rotates the pinion gear (233) using the knob (235), the rack gear (231) moves, thereby tilting the outer sub-nozzle (221).

[0108] In the nozzle assembly (220) according to the present embodiment, the angle between the spraying direction of the insulating material particles (P) and the spraying direction of the outer sub-nozzle (221) can be varied by tilting the outer sub-nozzle (221).

[0109] The outer sub-nozzle (221) can be tiltably supported on the main nozzle (158) in various other ways in addition to the way shown in the drawing.

[0110] Additionally, the tilting mechanism (230) can be changed to various other configurations capable of tilting the outer sub-nozzle (221), in addition to the configuration including the rack gear (231) and pinion gear (233) as illustrated.

[0111] Although preferred examples of the present invention have been described above, the scope of the present invention is not limited to the forms described and illustrated above.

[0112] For example, the drawing shows that the insulation particles (P) crushed in the crushing device (110) are transported to the blower pipe (145) via the conveyor (124) and the connecting device (134), but the crushing device (110) and the blower pipe (145) can be directly connected so that the insulation particles (P) discharged from the crushing device (110) can be directly supplied to the blower pipe (145).

[0113] Additionally, the drawing shows that the outer sub-nozzle and the inner sub-nozzle are coupled to the main nozzle to spray the binder, but only one of the outer sub-nozzle and the inner sub-nozzle can be coupled to the main nozzle.

[0114] Although embodiments of the present invention have been described in detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims below, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0116] 100: Insulation spraying device 110: Crushing device 111: Hopper 118: Crushing Roll 122: Crushing roll drive unit 124: Conveyor 125: Conveyor body 130: Transfer screw 132: Transfer screw drive device 134: Connecting device 135 : Connecting member 138 : Impeller 139 : Blade 141 : Impeller drive unit 143 : Blower 145 : Blower pipe 148 : Binder supply device 149 : First supply device 151: First supply pipe 153: Second supply device 155: Second supply pipe 157, 210, 220: Nozzle assembly 158: Main nozzle 162, 211, 221: Outer sub-nozzles 163, 212, 222: Support body 170: Rear nozzle body 174: Front nozzle body 183: Inner sub-nozzle 187: Nozzle connector 190, 215, 226: Coupler 230 : Tilting mechanism

Claims

Claim 1 A crushing device for crushing insulation material raw materials into sprayable insulation particles; a conveyor for transporting insulation particles crushed by the crushing device, comprising a conveyor body, a conveying screw disposed inside the conveyor body, and a conveying screw driving device that provides rotational force to the conveying screw; a blower for blowing air; a blower pipe configured to allow the insulation particles and the air blown from the blower to flow together with the air blown from the blower; a nozzle assembly connected to the blower pipe for spraying the insulation particles onto a construction surface; and a binder supply device for supplying a binder to the nozzle assembly for attaching the insulation particles to the construction surface, wherein the nozzle assembly comprises a main nozzle having a main nozzle nozzle for spraying the insulation particles. and includes a sub-nozzle coupled to the main nozzle to spray the binder onto the insulating material particles sprayed by the main nozzle, wherein the sub-nozzle includes a plurality of outer sub-nozzles spaced apart in a circumferential direction along the outer surface of the main nozzle so as to spray the binder onto the insulating material particles while the insulating material particles are sprayed in the air through the main nozzle nozzle opening, and the nozzle assembly includes a ring-shaped coupler coupled to the main nozzle to surround the outer surface of the main nozzle to support the plurality of outer sub-nozzles, wherein the coupler is provided with a slit into which the plurality of outer sub-nozzles can be engaged or a coupler groove into which the plurality of outer sub-nozzles can be inserted, and the plurality of outer sub-nozzles are detachably coupled to the coupler or circumferentially movably coupled to the coupler, and the outer sub-nozzle includes a rear nozzle body having a rear flow path through which the binder can pass;and includes a front nozzle body having a front passage through which the binder can pass and an outer sub-nozzle nozzle nozzle through which the binder is sprayed, wherein the front nozzle body is angle-adjustable and connected to the rear nozzle body so as to change the arrangement angle of the front passage relative to the rear passage, and the front nozzle body is configured to rotate around a rotational center axis perpendicular to the flow direction of the binder through the rear passage, and the rear nozzle body has a curved rear nozzle body contact surface, and the front nozzle body has a curved front nozzle body contact surface that contacts the rear nozzle body contact surface so as to be angle-adjustable while maintaining contact with the rear nozzle body contact surface, and the outer sub-nozzle includes a support body coupled to the main nozzle to support the rear nozzle body and the front nozzle body, and the support body includes a support body space capable of accommodating at least a part of the rear nozzle body and at least a part of the front nozzle body; A thermal insulation spraying device comprising: a first opening connected to the support body space so as to expose the outer sub-nozzle nozzle nozzle to the outside of the support body; a second opening connected to the support body space so as to allow at least a portion of the rear nozzle body to be inserted; and a third opening connected to the support body space so as to allow at least a portion of the front nozzle body to be inserted. Claim 2 delete Claim 3 In claim 1, the insulation spraying device is configured such that the outer sub-nozzle sprays the binder toward the insulation particles in a spraying direction inclined with respect to the spraying direction of the insulation particles. Claim 4 delete Claim 5 In claim 1, the binder supply device comprises: a first supply device for supplying a first material constituting the binder; and a second supply device for supplying a second material constituting the binder, wherein at least one of the plurality of outer sub-nozzles is connected to the first supply device to spray the first material, and at least another of the plurality of outer sub-nozzles is connected to the second supply device to spray the second material. Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete Claim 14 delete Claim 15 delete Claim 16 In claim 1, the insulation spraying device comprises an inner sub-nozzle, at least a portion of which is disposed inside the main nozzle so as to spray the binder onto the insulation particles while the insulation particles pass through the main nozzle flow path inside the main nozzle. Claim 17 In claim 16, the binder supply device comprises: a first supply device for supplying a first material constituting the binder; and a second supply device for supplying a second material constituting the binder, wherein either the outer sub-nozzle or the inner sub-nozzle is connected to the first supply device to spray the first material, and the other is connected to the second supply device to spray the second material, forming an insulating material spraying device. Claim 18 delete

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