Single-body double-nozzle type spraying structure for hydraulic support

Abstract

The single-body double-nozzle type spraying structure for the hydraulic support comprises a base, the base is provided with two hole cavities used for water passing and air passing respectively, the two hole cavities are blind holes, the base is further provided with two water-air mixing nozzles, and the two water-air mixing nozzles communicate with the two hole cavities; the two hole cavities transversely extend left and right and are arranged up and down, the positions, corresponding to ports of the two hole cavities, of the base are each provided with a pair of locking holes extending front and back, the two locking holes in each pair are symmetrically formed in the upper side and the lower side of the center line of the corresponding hole cavity, the maximum distance between the side walls of the two locking holes is larger than the hole diameter of the corresponding hole cavity, and lock pins are inserted into the locking holes. The lock pins are partially exposed in the corresponding hole cavities; pipe connecting heads are inserted into ports of the two hole cavities, and clamping rings matched with the lock pins in a clamped mode are arranged on the outer side faces of the pipe connecting heads. According to the spraying structure, the locking pin is inserted into the locking hole, the clamping ring is clamped, the insertion connection relation between the pipe connector and the base is locked, and the base is more conveniently connected with the water pipe and the air pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of spray dust reduction, in particular to a single-body double-spray head spray structure for a hydraulic support. Background Art

[0002] Coal mining machines are often used in coal mining. Coal mining machines often generate a lot of dust when mining or moving. If not handled, it will cause harm to the health of workers. Therefore, a spray device is usually installed on the hydraulic support of the existing coal mining machine to capture dust in the air through mist droplets to achieve the purpose of dust reduction.

[0003] However, the existing spray device is usually connected to the water pipe and the air pipe through threaded matching, which is not only inconvenient during assembly, but also requires sealing operations, such as wrapping a sealing tape on the external thread to ensure the sealing of the connection, which further brings inconvenience to the connection of the spray device. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a single-body double-nozzle spray structure for a hydraulic support.

[0005] The technical solution of this utility model is as follows:

[0006] A single-body double-nozzle spray structure for a hydraulic support includes a base, the base is provided with two holes for water and air respectively, the two holes are blind holes, and the base is also provided with two water-air mixing nozzles, both of which are connected to the two holes;

[0007] The two holes extend horizontally to the left and right and are arranged up and down. The base is provided with a pair of locking holes extending forward and backward at the positions corresponding to the two hole ports. The two locking holes in each pair are symmetrically arranged on the upper and lower sides of the center line of the corresponding hole, and the maximum distance between the side walls is greater than the aperture of the corresponding hole. A locking pin is inserted in the locking hole, and the locking pin is partially exposed in the corresponding hole.

[0008] The ports of the two cavities are both plugged with pipe connectors, and the outer side surfaces of the pipe connectors are provided with clamping rings which are clamped and matched with the locking pins.

[0009] The pipe connector is used to connect the water pipe and the air pipe to the base. When connecting, the pipe connector is directly inserted into the hole of the base, and the locking pin is inserted into the locking hole. The locking pin extends into the hole and is stuck on the outside of the clamp ring, which clamps the clamp ring so that the pipe connector cannot be pulled out of the base, realizing a quick connection between the pipeline and the base, and the connection is firm and not easy to disengage. When replacement is needed, the pipe connector can be pulled out by pulling out the locking pin, and disassembly is also very convenient.

[0010] In order to enable the locking pin to stably clamp the retaining ring, the center distance between the two locking holes in each pair is smaller than the aperture of the corresponding cavity, so that more parts of the locking pin are exposed in the cavity to block the retaining ring.

[0011] Preferably, the locking hole is a through hole. When the locking pin is inserted into the locking hole, its two ends are located in the locking hole, and the middle part is exposed in the hole cavity and clamped with the snap ring. In this way, the two ends of the locking pin are fixed by the locking hole, and a force is provided through the two ends of the locking pin to prevent the pipe connector from being pulled out, so that the locking pin can withstand a greater force for pulling out the pipe connector, thereby making the clamping connection between the locking pin and the snap ring more stable.

[0012] Preferably, the hole cavity is a stepped hole, the hole near the port is hole 1, which has the largest hole diameter, and the clamp is located in hole 1 and abuts against the inner end surface of hole 1. The stepped structure has a limiting effect on the airway of the pipe connector to prevent it from being inserted too deep into the cavity, and can also play a positioning role. When one side of the clamp abuts against the stepped surface, the locking hole is aligned with the other side of the clamp, so that the locking pin is inserted into the locking hole and the clamp is clamped in the cavity.

[0013] Specifically, the cavity includes hole 1, hole 2 and hole 3 in order from the port inward, and the insertion end of the pipe connector abuts against the inner end surface of hole 2 and seals with the side wall of hole 2 to increase the sealing effect between the pipe connector and the cavity and avoid air or water leakage. When the pipe connector is inserted into the cavity, the clamp ring and the insertion end of the pipe connector abut against the inner end surfaces of hole 1 and hole 2 at the same time.

[0014] In the present application, the base is a polygonal block formed by cutting off the upper left corner of a rectangular body. Two cavity ports are opened on the right side of the base, and two water-gas mixing nozzles are respectively arranged on the top surface of the base and the inclined surface cut out from the upper left corner.

[0015] Among them, the angle between the inclined surface at the upper left corner of the base and the top surface is 135-150 degrees, so that the two water-gas mixing nozzles have different spray angles to increase the coverage area of ​​the spray and improve the dust reduction effect.

[0016] Specifically, two connecting holes are provided on the base for connecting the water-gas mixing nozzle. The connecting hole located on the top surface of the base extends downward and is directly connected to the hole three of the two hole cavities. The connecting hole located on the inclined surface of the base extends normal to the inclined surface, and its bottom is directly connected to the hole three of the lower hole cavity, and the side wall is connected to the hole three of the upper hole cavity through a connecting hole.

[0017] In addition, the apertures of the three holes in the ventilating cavity are larger than the apertures of the three holes in the water-passing cavity, and the apertures of the two connecting holes are smaller than the apertures of the three holes in the two cavities. The ventilating cavity is larger than the water-passing cavity, which can make the gas account for a larger proportion in the water-gas ratio, better the effect of misting the water, and make the spraying range of the water mist larger and farther. If the connecting hole is smaller than the three holes, it is beneficial to increase the water pressure and air pressure.

[0018] In this application, a connecting groove is provided at the lower left corner of the base, a mounting block is connected to the connecting groove, the mounting block protrudes out of the left side of the base, and a vertical mounting hole is provided on the protruding end, and the base is installed on the hydraulic support through the mounting block.

[0019] The utility model provides a single double-nozzle spray structure for a hydraulic support, wherein a locking hole is arranged at the port of a cavity and a clamping ring is arranged on a pipe connector, and a locking pin is inserted into the locking hole so that the locking pin extends into the cavity and is clamped with the clamping ring to lock the plug-in relationship between the pipe connector and the base, thereby making the connection between the base and the water pipe and the air pipe more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached picture:

[0021] Figure 1 is a schematic diagram of the spray structure;

[0022] Figure 2 for Figure 1 A cross-sectional schematic diagram of

[0023] Figure 3 A schematic cross-sectional view of the base.

[0024] The components represented by the reference numerals in the figure are:

[0025] 1. Base; 11. Hole cavity; 111. Hole one; 112. Hole two; 113. Hole three; 12. Locking hole; 13. Connecting hole; 14. Connecting hole; 2. Water-gas mixing nozzle; 21. Column core; 3. Pipe connector; 31. Snap ring; 4. Locking pin; 5. Mounting block. DETAILED DESCRIPTION

[0026] like Figures 1 to 3 As shown, the embodiment of the utility model provides a single double-nozzle spray structure for a hydraulic support, including a base 1, on which are provided two cavities 11 for passing water and air respectively, the two cavities 11 are blind holes, and a pipe connector 3 is plugged at the port, and a water pipe or an air pipe (not shown in the figure) is fixed on the pipe connector 3 for supplying water and air respectively. Two water-gas mixing nozzles 2 are also provided on the base 1, both of which are connected to the two cavities 11, and the water and air in the two cavities 11 are sprayed out from the nozzles at the same time, so that the water forms a mist.

[0027] In this embodiment, the two holes 11 extend horizontally to the left and right and are arranged up and down. The base 1 is provided with a pair of locking holes 12 at the positions of the two holes 11. The locking holes 12 are inserted with locking pins 4, and the locking pins 4 are partially exposed in the corresponding holes 11. A clamping ring 31 is provided on the outer surface of the pipe connector 3, which is engaged with the exposed part of the locking pin 4 to lock the pipe connector 3 on the base 1, so as to realize the connection between the water pipe and the air pipe and the base 1.

[0028] Among them, the locking holes 12 extend forward and backward, and the two locking holes 12 in each pair are symmetrically arranged on the upper and lower sides of the center line of the corresponding cavity 11, and the maximum distance between the side walls is greater than the aperture of the corresponding cavity 11, so that the locking pin 4 is clamped on the upper and lower sides of the pipe connector 3, providing symmetrical blocking force and improving the clamping stability of the locking pin 4 and the clamping ring 31.

[0029] When connecting, the pipe connector 3 is directly inserted into the hole 11 of the base 1 to connect the water pipe and the air pipe to the base 1; the locking pin 4 is inserted into the locking hole 12, and the locking pin 4 extends into the hole 11 and is clamped on the outside of the clamping ring 31, clamping the clamping ring 31, so that the pipe connector 3 cannot be pulled out of the base 1. By plugging and pulling out the locking pin 4, the connection position of the pipe connector 3 on the base 1 is locked and unlocked, the operation is simple and convenient, and the pipeline can be quickly connected to the base 1, and the connection is firm and not easy to be disengaged, and it is also convenient to replace the spray structure.

[0030] The lock pin 4 can be a pin column connected with the locking hole 12 by interference fit, or a bolt can be used to fix the bolt in the locking hole 12 by a nut. This kind of lock pin 4 is easy to disassemble. The present application does not make any limitation on the structure of the lock pin 4, and it only needs to be able to stably connect with the locking hole 12 and stably clamp the clamping ring 31.

[0031] Please refer to Figure 2 and Figure 3 In order to enable the locking pin 4 to stably clamp the retaining ring 31 and prevent it from falling off, the center distance between the two locking holes 12 in each pair is smaller than the aperture of the corresponding cavity 11, so that more parts of the locking pin 4 are exposed in the cavity 11 to block the retaining ring 31.

[0032] The locking hole 12 can preferably be a through hole. When the locking pin 4 is inserted into the locking hole 12, its two ends are located in the locking hole 12, and the middle part is exposed in the hole 11 and engaged with the snap ring 31. In this way, the two end parts of the locking pin 4 are fixed by the locking hole 12, and a blocking force is provided at the two ends of the locking pin 4 to prevent the pipe connector 3 from being pulled out, so that the locking pin 4 can withstand a greater force, so that even if the pipe connector 3 is subjected to a large pull-out force, it is not easy to disengage from the locking pin 4, thereby improving the stability of the engagement between the locking pin 4 and the snap ring 31.

[0033] In this embodiment, the cavity 11 is a stepped hole, the hole near the port is the hole 111, which has the largest diameter, and the snap ring 31 is located in the hole 111, abutting against the inner end surface of the hole 111, and the locking hole 12 is also connected to the hole 111. The stepped structure has a limiting effect on the pipe connector to prevent it from being inserted too deeply into the cavity 11, and can also play a positioning role. When one side of the snap ring 31 abuts against the stepped surface, the locking hole 12 is aligned with the other side of the snap ring 31, so that the locking pin 4 is inserted into the locking hole 12 and the snap ring 31 is clamped in the cavity 11, without worrying that the snap ring 31 is blocked in the extension direction of the locking hole 12, resulting in the inability to insert the locking pin 4.

[0034] Specifically, the cavity 11 includes hole 1 111, hole 2 112 and hole 3 113 in sequence from the port inward, and the insertion end of the pipe connector 3 abuts against the inner end surface of hole 2 112, and is sealed with the side wall of hole 2 112 to increase the sealing effect between the pipe connector 3 and the cavity 11 to avoid air or water leakage. When the pipe connector 3 is inserted into the cavity 11, the clamping ring 31 and the insertion end of the pipe connector 3 can abut against the inner end surfaces of hole 1 111 and hole 2 112 at the same time. In order to achieve sealing, a sealing ring is provided at the end position of the insertion end of the pipe connector 3.

[0035] In the present application, the base 1 is specifically a polygonal block, formed by cutting off the upper left corner of a rectangular body, the ports of the two cavities 11 are opened on the right side of the base 1, and the two water-gas mixing nozzles 2 are respectively arranged on the top surface and the inclined surface cut out of the upper left corner of the base 1. Among them, the angle between the inclined surface at the upper left corner of the base 1 and the top surface can be 135-150 degrees, so that the two water-gas mixing nozzles 2 have different spray angles to increase the coverage area of ​​the spray and improve the dust reduction effect.

[0036] Specifically, the base 1 is provided with connecting holes 13 on the top surface and the inclined surface respectively, for connecting the water-gas mixing nozzle 2. The connecting hole 13 located on the top surface of the base 1 extends downward and is directly connected to the hole three 113 of the two cavities 11. The connecting hole 13 located on the inclined surface of the base 1 extends normal to the inclined surface, and its bottom is directly connected to the hole three 113 of the lower cavity 11, and the side wall is connected to the hole three 113 of the upper cavity 11 through the connecting hole 14.

[0037] In this embodiment, of the two cavities 11 , the upper cavity 11 is used for water flow, and the lower cavity 11 is used for ventilation.

[0038] The apertures of the three holes of the cavity 11 for ventilation are larger than the apertures of the three holes of the cavity 11 for water flow, and the apertures of the two connecting holes 13 are smaller than the apertures of the three holes 113 of the two cavities 11. Among them, the cavity 11 for ventilation is larger than the cavity 11 for water flow, which can make the proportion of gas in the water-gas ratio larger, and the effect of misting water is better, and the spraying range of the water mist is larger and farther. The connecting hole 14 is smaller than the three holes 113, which is conducive to increasing the water pressure and air pressure.

[0039] In addition, if Figure 2 As shown, the water-gas mixing nozzle 2 includes a column core 21, the bottom end of which extends between the two cavities 11, and the connecting hole 14 is smaller than the hole three 113, which can facilitate water to pass through the side of the column core 21 in the vertical connecting hole 13 and flow into the inclined connecting hole 13 through the connecting hole 14.

[0040] In this embodiment, a sealing ring is provided on the outer side of the end of the column core 21 to separate water and air. An air passage is provided inside the column core 21, extending from its lower end surface to the nozzle of the water-gas mixing nozzle 2, and the air introduced from the lower cavity 11 is ejected outward through the air passage. A water passage is formed between the outer wall of the column core 21 and the inner wall of the connecting hole 13, and a water hole connected to the water passage is provided on the water-gas mixing nozzle 2, so that the water introduced from the upper cavity 11 flows to the nozzle of the water-gas mixing nozzle 2 through the connecting hole 14-water passage-water hole, and is mixed with the air ejected from the air passage, and is ejected in a mist form. This method can greatly save water.

[0041] In this embodiment, a connecting groove is further provided at the lower left corner of the base 1, and a mounting block 5 is connected to the connecting groove. The mounting block 5 protrudes out of the left side of the base 1, and a vertical mounting hole is provided on the protruding end. The base 1 is installed on the hydraulic support through the mounting block 5.

Claims

1. A single-body double-nozzle spray structure for a hydraulic support, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with two cavities (11) for passing water and passing air respectively, the two cavities (11) being blind holes, and the base (1) is also provided with two water-gas mixing nozzles (2), both of which are in communication with the two cavities (11); The two holes (11) extend horizontally to the left and right and are arranged up and down. The base (1) is provided with a pair of locking holes (12) extending forward and backward at the port positions corresponding to the two holes (11). The two locking holes (12) in each pair are symmetrically arranged on the upper and lower sides of the center line of the corresponding hole (11), and the maximum distance between the side walls is greater than the aperture of the corresponding hole (11). A locking pin (4) is inserted into the locking hole (12), and the locking pin (4) is partially exposed in the corresponding hole (11). A pipe connector (3) is inserted into the ports of the two cavities (11), and a clamping ring (31) which is clamped and matched with the locking pin (4) is provided on the outer surface of the pipe connector (3).

2. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 1, characterized in that: The center distance between the two locking holes (12) in each pair is smaller than the diameter of the corresponding cavity (11).

3. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 2, characterized in that: The locking hole (12) is a through hole.

4. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 3, characterized in that: The cavity (11) is in the shape of a stepped hole, the hole near the port is hole one (111) having the largest hole diameter, and the clamping ring (31) is located in hole one (111) and abuts against the inner end surface of hole one (111).

5. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 4, characterized in that: The cavity (11) includes hole one (111), hole two (112) and hole three (113) in sequence from the port inward, and the insertion end of the pipe connector (3) abuts against the inner end surface of the hole two (112) and is sealed with the side wall of the hole two (112).

6. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 5, characterized in that: The base (1) is in the shape of a polygonal block, formed by cutting off the upper left corner of a rectangular body, the two ports of the cavity (11) are located on the right side surface of the base (1), and the two water-gas mixing nozzles (2) are respectively arranged on the top surface of the base (1) and the inclined surface cut out from the upper left corner.

7. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 6, characterized in that: The angle between the inclined surface at the upper left corner of the base (1) and the top surface is 135-150 degrees.

8. A single-body double-nozzle spray structure for a hydraulic support as described in claim 7, wherein the base (1) is provided with two connecting holes (13) for connecting the water-gas mixing nozzle (2), the connecting hole (13) located on the top surface of the base (1) extends downward and is directly connected to the third hole (113) of the two cavities (11), the connecting hole (13) located on the inclined surface of the base (1) extends normal to the inclined surface, and its bottom is directly connected to the third hole (113) of the lower cavity (11), and the side wall is connected to the third hole (113) of the upper cavity (11) through a connecting hole (14).

9. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 8, characterized in that: The apertures of the three holes of the cavity (11) for ventilation are correspondingly larger than the apertures of the three holes of the cavity (11) for water flow, and the apertures of the two connecting holes (13) are smaller than the apertures of the three holes (113) of the two cavities (11).

10. A single-body double-nozzle spray structure for a hydraulic support as claimed in claim 1, characterized in that: The base (1) is provided with a connection groove at the lower left corner, and a mounting block (5) is connected to the connection groove. The mounting block (5) protrudes out of the left side of the base (1), and a vertical mounting hole is provided on the protruding end.

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