Long-distance spraying device

Abstract

The long-distance spraying device comprises a spraying pipe, a spraying pump and a spraying gun, the spraying pipe comprises an outer pipe and an inner pipe arranged on the inner side of the outer pipe in a sleeving mode at intervals, a heated water inlet and a heated water outlet are formed in the pipe wall of the outer pipe, and the inner pipe is used for conveying spraying paint; the inlet end of the inner pipe is connected with the spraying pump through the end cover, the outlet end of the inner pipe is connected with the spraying gun through the end cover, and the end cover is in sealed connection with the end of the outer pipe. According to the long-distance spraying device, the hot water channel is reserved between the inner pipe and the outer pipe, and external heating water can enter the hot water channel to heat the spraying coating, so that the viscosity of the coating is reduced, the flowability is improved, the long-distance spraying requirement is met, and the problem that the spraying operation of a roadway with a narrow space is difficult is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and in particular to a long-distance spraying device. Background Art

[0002] In the field of coal support, the support method of metal mesh + anchor rod + tray can provide effective support effect for the tunnel side. However, since the metal mesh cannot provide dense protection effect, the soft and broken tunnel coal side will leak, causing the tray, metal mesh and coal side to separate, and the anchor rod will gradually lose its support effect.

[0003] Compared with metal mesh, spray coating can form a complete and dense protective layer, which can effectively reduce the leakage phenomenon and ensure the anchoring force of the anchor rod. However, in such soft and broken tunnels, the excavation head space is narrow and it is difficult to put down the entire spraying equipment. In addition, long-distance spraying has the problem of high viscosity of the spraying material and difficulty in long-distance transportation. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] The technical solution of the present invention provides a long-distance spraying device, which has a hot water channel reserved between the inner tube and the outer tube. External heating water can enter the hot water channel to heat the spray paint, thereby reducing the viscosity of the paint and improving the fluidity to meet the needs of long-distance spraying and solve the problem of difficult spraying operations in narrow alleys.

[0006] The long-distance spraying device of an embodiment of the present invention includes: a spray pipe, which includes an outer pipe and an inner pipe spaced apart inside the outer pipe, a heating water inlet and a heating water outlet are provided on the pipe wall of the outer pipe, and the inner pipe is used to transport spray paint; a spray pump and a spray gun, the inlet end of the inner pipe is connected to the spray pump through an end cover, the outlet end of the inner pipe is connected to the spray gun through an end cover, and the end cover is sealed and connected to the end of the outer pipe.

[0007] The long-distance spraying device of the embodiment of the present invention has a hot water channel reserved between the outer tube and the inner tube, and the outer tube is provided with a heating water inlet and a heating water outlet. External heating water can enter the hot water channel to heat the spray paint in the inner tube, thereby reducing the viscosity of the paint and improving the fluidity, so as to meet the needs of long-distance spraying and solve the problem of difficult spraying operations in narrow alleys.

[0008] In some embodiments, the spray pipe is divided into multiple sections, and two adjacent sections of the spray pipe are detachably connected via a joint.

[0009] In some embodiments, three inner tubes are arranged at intervals in the outer tube, the joint includes three first channels correspondingly connected to the three inner tubes, and the end cover includes three second channels correspondingly connected to the three inner tubes.

[0010] In some embodiments, the joint includes a connecting plate and a left connecting head and a right connecting head protruding on both sides of the connecting plate. The connecting plate is clamped between two adjacent sections of the spray pipe and is connected to the outer pipes on both sides. The first channel runs through the left connecting head and the right connecting head, and the left connecting head and the right connecting head are respectively connected to the inner pipes on both sides.

[0011] In some embodiments, both end openings of the first channel are stepped holes.

[0012] In some embodiments, the opening where the second channel is connected to the inner tube is a stepped hole, and the other end opening is provided with an internal thread connected to the hose.

[0013] In some embodiments, the lumen of the outer tube includes a middle section and a step connecting the two ends of the middle section, the cross-sectional area of ​​the step is larger than the cross-sectional area of ​​the middle section, a positioning ring is installed in the step, the positioning ring has positioning holes for the three inner tubes to pass through, and the positioning ring stops against the step surface of the step.

[0014] In some embodiments, a first sealing member is provided between an inner circumferential surface of the positioning hole and the inner tube, and a second sealing member is provided between an outer circumferential surface of the positioning ring and the outer tube.

[0015] In some embodiments, a positioning nut is sleeved on the outer side of the inner tube, and the positioning nut is located on the outer side of the positioning ring.

[0016] In some embodiments, the inner diameter of the outer hole section of the stepped hole is slightly larger than the outer diameter of the locking nut, and a third sealing member is provided between the outer hole section and the locking nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side view of a long-distance spraying device according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Cross-sectional view along AA direction.

[0019] Figure 3 4 is a cross-sectional view of an outer tube of a long-distance spraying device according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the structure of a joint of a long-distance spraying device according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] Outer tube 1, inner tube 2, positioning ring 3, joint 4, end cover 5, locking nut 6, first sealing ring 302, second sealing ring 301, internal thread 501, heating water inlet 101, heating water outlet 102, step 104, step hole 401, third sealing member 402, hot water channel 105. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0024] like Figure 1-Figure 4 As shown, the long-distance spraying device according to the embodiment of the present invention includes a spraying pipe, a spraying pump and a spray gun.

[0025] Specifically, the spray pipe includes an outer tube 1 and an inner tube 2 which is spaced apart and sleeved inside the outer tube 1. A heating water inlet 101 and a heating water outlet 102 are provided on the tube wall of the outer tube 1. The inner tube 2 is used to transport spray paint. The inlet end of the inner tube 2 is connected to the spray pump through the end cover 5, and the outlet end of the inner tube 2 is connected to the spray gun through the end cover 5, and the end cover 5 is sealed and connected to the end of the outer tube 1.

[0026] In the long-distance spraying device of the embodiment of the present invention, a hot water channel 105 is reserved between the outer tube 1 and the inner tube 2, and a heating water inlet 101 and a heating water outlet 102 are provided on the outer tube 1. External heating water can enter the hot water channel 105 to heat the spray paint in the inner tube 2, thereby reducing the viscosity of the paint and improving the fluidity, so as to meet the needs of long-distance spraying and solve the problem of difficult spraying operations in narrow alleys.

[0027] In addition, it should be noted that the heating of the spray paint is not limited to the above-mentioned setting of heating water circulation for heating. For example, a special heating device can also be provided.

[0028] Alternatively, the heating water may be oil cooling water for spray equipment or other equipment.

[0029] Optionally, a temperature control sensor and an alarm device may be provided on the spray pipe to control the water temperature not to exceed 60°. When the water temperature exceeds the standard, the alarm device sounds an alarm and stops the water supply and heating.

[0030] Optionally, the inner tube 2 and the outer tube 1 are both made of metal materials to ensure the heat transfer effect.

[0031] Optionally, a heat-insulating sleeve may be provided on the outer tube 1 .

[0032] In some embodiments, the spray pipe is divided into multiple sections, and two adjacent sections of the spray pipe are detachably connected via a joint 4 .

[0033] It is understandable that considering the cost and difficulty of the manufacturing process, the length of a single spray pipe is limited. The present application utilizes a connector 4 to connect multiple sections of spray pipes into a whole to accommodate ultra-long distance transportation, and the spray pipe is detachable for easy transportation and storage.

[0034] Furthermore, three inner tubes 2 are arranged at intervals in the outer tube 1, the joint 4 includes three first channels correspondingly connected to the three inner tubes 2, and the end cover 5 includes three second channels correspondingly connected to the three inner tubes 2. It should be noted that spraying paint generally includes spraying A material, spraying B material and cleaning white oil. The three inner tubes 2 are arranged in the outer tube 1 to respectively transport the above three paints to avoid mixing. Similarly, the three second channels are arranged on the end cover 5 to respectively transport three different paints to the spray gun.

[0035] Furthermore, if Figure 4 As shown, the joint 4 includes a connecting plate and a left connector and a right connector protruding from both sides of the connecting plate. The connecting plate is sandwiched between two adjacent sections of the spray pipe and connected to the outer pipes 1 on both sides. The first channel runs through the left connector and the right connector, and the left connector and the right connector are respectively connected to the inner pipes 2 on both sides. In other words, the joint 4 is connected between two adjacent spray pipes, the connecting plate is used for fixed connection, and the left and right connectors are used for connecting the inner pipes 2 on both sides.

[0036] Further, both openings of the first channel are stepped holes 401. It is understandable that the stepped holes 401 can be plugged with the inner tube 2, and two sealing contact surfaces can be formed after plugging, so that the assembly stability and sealing reliability are better.

[0037] Furthermore, the opening where the second channel is connected to the inner tube 2 is a stepped hole 401, and the other end opening is provided with an internal thread 501 connected to the hose. It can be understood that the end cap 5 is used to connect the inner tube 2 and the external hose, and the inner tube 2 itself cannot be screwed, so the inner end opening of the second channel is designed as a stepped hole 401, which is convenient for plug-in cooperation with the inner tube 2, and the outer end opening is designed with an internal thread 501, so that the hose can be directly threadedly connected to the end cap 5, which is simple, convenient, and reliable.

[0038] Furthermore, the lumen of the outer tube 1 includes a middle section and a step 104 connected at both ends of the middle section. The cross-sectional area of ​​the step 104 is larger than that of the middle section. A positioning ring 3 is installed in the step 104. The positioning ring 3 has positioning holes for the three inner tubes 2 to pass through. The positioning ring 3 abuts against the step surface of the step 104. Thus, the positioning ring 3 can support the three inner tubes 2 to prevent the inner tubes 2 from shaking and ensure the reliability of their assembly. In addition, the step surface can be used as a limiting structure to realize the assembly positioning of the positioning ring 3 in the axial direction.

[0039] Furthermore, a first seal 302 is provided between the inner circumference of the positioning hole and the inner tube 2, and a second seal 301 is provided between the outer circumference of the positioning ring 3 and the outer tube 1. Thus, the first seal 302 and the second seal 301 can achieve sealing between the positioning ring 3, the outer tube 1 and the inner tube 2, preventing the paint from mixing and the heated water from entering the paint.

[0040] Further, a positioning nut is sleeved on the outer side of the inner tube 2, and the positioning nut is located on the outer side of the positioning ring 3. Thus, the positioning nut and the step surface can clamp the positioning ring 3 to achieve axial locking.

[0041] Furthermore, the inner diameter of the outer hole section of the stepped hole 401 is slightly larger than the outer diameter of the locking nut 6, and a third sealing member 402 is provided between the outer hole section and the locking nut 6. Therefore, when the joint 4 is assembled with the three inner tubes 2, the outer hole section can be assembled in a centering manner with the locking nut 6, and the third sealing member 402 can ensure the sealing between the first channel and the inner tube 2 to prevent coating leakage.

[0042] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] It should be understood that the present invention does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention and the invention defined in this specification extend to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments of this specification illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

Claims

1. A long-distance spraying device, characterized in that: include: A spray pipe, the spray pipe comprises an outer pipe and an inner pipe spaced apart and sleeved inside the outer pipe, a heating water inlet and a heating water outlet are arranged on the pipe wall of the outer pipe, and the inner pipe is used for conveying spray paint; A spray pump and a spray gun, wherein the inlet end of the inner tube is connected to the spray pump through an end cover, the outlet end of the inner tube is connected to the spray gun through an end cover, and the end cover is sealed and connected to the end of the outer tube.

2. The long-distance spraying device according to claim 1, characterized in that: The spray pipe is divided into multiple sections, and two adjacent sections of the spray pipe are detachably connected via a joint.

3. The long-distance spraying device according to claim 2, characterized in that: Three inner tubes are arranged at intervals in the outer tube, the joint includes three first channels correspondingly connected to the three inner tubes, and the end cover includes three second channels correspondingly connected to the three inner tubes.

4. The long-distance spraying device according to claim 3, characterized in that: The joint includes a connecting plate and a left connecting head and a right connecting head protruding on both sides of the connecting plate. The connecting plate is clamped between two adjacent sections of the spray pipe and is connected to the outer pipes on both sides. The first channel runs through the left connecting head and the right connecting head, and the left connecting head and the right connecting head are respectively connected to the inner pipes on both sides.

5. The long-distance spraying device according to claim 3, characterized in that: Both end openings of the first channel are stepped holes.

6. The long-distance spraying device according to claim 3, characterized in that: The opening where the second channel is connected to the inner tube is a stepped hole, and the other end opening is provided with an internal thread connected to the hose.

7. The long-distance spraying device according to claim 5, characterized in that: The lumen of the outer tube includes a middle section and a step connected at both ends of the middle section, the cross-sectional area of ​​the step is larger than the cross-sectional area of ​​the middle section, a positioning ring is installed in the step, the positioning ring has positioning holes for the three inner tubes to pass through, and the positioning ring stops against the step surface of the step.

8. The long-distance spraying device according to claim 7, characterized in that: A first sealing member is provided between the inner circumferential surface of the positioning hole and the inner tube, and a second sealing member is provided between the outer circumferential surface of the positioning ring and the outer tube.

9. The long-distance spraying device according to claim 7, characterized in that: A positioning nut is sleeved on the outer side of the inner tube, and the positioning nut is located on the outer side of the positioning ring.

10. The long-distance spraying device according to claim 7, characterized in that: The inner diameter of the outer hole section of the stepped hole is slightly larger than the outer diameter of the locking nut, and a third sealing member is provided between the outer hole section and the locking nut.

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