Denitrification spray gun

Abstract

The utility model provides a denitration spray gun which comprises an outer shell, a left cover body, a limiting ring and a top extension spring, and the left cover body used for isolating and protecting the spray gun is arranged at the left end of the outer shell. When the spray gun is not used, the spray gun pipe is pulled towards the right side, a pressing ring compresses a top extension spring, the spray gun pipe at the left end and the atomization spray head are both retracted into the outer shell, a retracting and releasing wheel is loosened to enable a pull rope to move towards the left side, and the left cover body rotates anticlockwise under the action of the twisting force of a torsional spring rotating shaft; the embedded cover is embedded with the outer shell to block the left end of the outer shell, so that the service life of the spray gun can be prolonged, the outer shell and the positioning plate are additionally arranged, the positioning plate is rotated out of the hidden groove after the spray gun pipe moves towards the right side, the positioning column is embedded with the positioning hole, and the position of the spray gun pipe can be limited.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of spray gun technology, especially relates to a denitration spray gun. BACKGROUND

[0002] The denitration spray gun is a device used in industrial combustion equipment, especially coal-fired boilers, to improve combustion conditions and reduce nitrogen oxide (NOx) emissions. It sprays ammonia water, urea solution or other reducing agents into the furnace to react with nitrogen oxides at high temperatures, converting them into nitrogen and water to achieve the purpose of denitration. The end of the denitration spray gun is mostly directly built into the inside of the boiler. The inside of the boiler has extremely high temperature when it is working. The material of the denitration spray gun has the characteristics of high temperature corrosion resistance. However, long-term placement in the high-temperature environment inside the boiler can affect the use of the denitration spray gun, thereby reducing the service life of the denitration spray gun, increasing the maintenance cycle of the denitration spray gun, and the nozzle component may be deformed due to thermal expansion in the high-temperature environment, affecting the atomization performance of the nozzle, causing the droplets to become large and uneven, thereby reducing the denitration efficiency.

[0003] In summary, the denitration spray gun placed in the high-temperature environment for a long time has some problems in use, so a new structure is needed to solve the above technical problems. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a denitration spray gun to solve the problems raised in the background art.

[0005] The utility model discloses a denitration spray gun, including: the shell body, left cover, limit ring and top extension spring, the left end of shell body is equipped with left cover for spray gun insulation protection use, the both ends of shell body outside face are equipped with two groups interval arrangement's wheel seat, the both ends of left end two groups wheel seat are equipped with fixed pulley for the auxiliary guide of pull rope, the both ends of right end two groups wheel seat are equipped with the reel for the pull rope of taking out and putting, the inside of shell body is equipped with two groups interval distribution's limit ring for the auxiliary spray gun pipe movement, two groups limit ring between being equipped with top extension spring for the top extension use of spray gun pipe, the right end of spray gun pipe outside face is equipped with hidden groove, the inside of hidden groove is equipped with the locating plate.

[0006] As a preferred embodiment, the inside of the shell body is also movably provided with a spray gun pipe for conveying the reaction solvent, the outside of the spray gun pipe is provided with a compression ring for compressing the top extension spring and the rebound force of the top extension spring to assist the top extension of the spray gun pipe. During the right movement of the spray gun pipe, the compression ring can compress the top extension spring to store elastic potential energy.

[0007] As a preferred implementation form, the right side surface of the compression ring is matched with the left end of the top extension spring, and the right end of the spray gun pipe is fixedly connected with an atomizing nozzle used for atomizing and spraying the reaction solvent.

[0008] As a preferred implementation form, the left cover body is provided with a torsion spring rotating shaft at the connecting position with the outer shell for assisting the rotation of the left cover body, the torsion spring rotating shaft twists the left cover body to the left side of the outer shell without external force, and the right side surface of the left cover body is fixedly provided with an embedded cover, the left cover body can rotate counterclockwise under the action of the torsion spring rotating shaft without external force, so that the left cover body blocks the left end of the outer shell.

[0009] As a preferred implementation form, the embedded cover is matched with the left end of the outer shell, the right side surface of the left cover body is provided with a pull ring, the outer side surfaces of the fixed pulley and the retractable wheel are provided with wheel grooves, the inner side of the wheel grooves is provided with a pull rope, and the left end of the pull rope is connected with the pull ring.

[0010] As a preferred implementation form, the outer side surface of the outer shell is provided with a fixed plate used for fixing, the left side surface of the fixed plate is vertically and throughly formed with a fixed screw hole, the pull rope passes through the fixed plate, and the front side of the retractable wheel is provided with a hand wheel.

[0011] The front side surface of the hand wheel is provided with a limiting hole, the inner side of the limiting hole is provided with a limiting column, the limiting column and the limiting hole are matched with each other, the hand wheel can drive the retractable wheel to rotate forward and backward, complete the retracting and releasing control of the pull rope, and make the limiting column embedded into the inner side of the limiting hole when it is needed to limit the rotation of the hand wheel.

[0012] As a preferred implementation form, the left end of the positioning plate is connected with a damping rotating shaft, the outer side surface of the spray gun pipe and the right side of the hidden groove are fixedly provided with a stop block, the right side surface of the outer shell is provided with a positioning hole, the lower surface of the positioning plate is provided with a positioning column, the positioning column and the positioning hole are matched with each other, the positioning plate is rotated out of the hidden groove after the spray gun pipe is moved to the right side, so that the positioning column and the positioning hole are matched, and the position of the spray gun pipe can be limited.

[0013] After the above technical scheme is adopted, the beneficial effects of the utility model are as follows: by increasing the outer shell, the left cover body, the limiting ring and the top extension spring, the spray gun pipe is pulled to the right side when not in use, the compression ring compresses the top extension spring, the spray gun pipe at the left end and the atomizing nozzle are all retracted into the outer shell, the pull rope is moved to the left side by loosening the retractable wheel, the left cover body rotates counterclockwise under the action of the torsion of the torsion spring rotating shaft, the embedded cover is matched with the outer shell to block the left end of the outer shell, so that the service life of the spray gun can be prolonged, and by increasing the outer shell and the positioning plate, the positioning plate is rotated out of the hidden groove after the spray gun pipe is moved to the right side, so that the positioning column and the positioning hole are matched, and the position of the spray gun pipe can be limited. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 It is a schematic diagram of the overall structure of the rear side of the present application.

[0016] Fig. 2 It is a schematic diagram of the partial section of the present application.

[0017] Fig. 3 It is a schematic diagram of the front side structure of the present application.

[0018] In the figure, 100 is an outer shell, 101 is a fixed plate, 102 is a fixed threaded hole, 103 is a wheel seat, 104 is a fixed pulley, 105 is a pull rope, 106 is a left cover body, 107 is an embedded cover, 108 is a limiting ring, 109 is a top extension spring, 110 is a spray gun pipe, 111 is a pressure ring, 112 is a hidden groove, 113 is a positioning plate, 114 is a damping rotating shaft, 115 is a stop block, 116 is a positioning column, 117 is a positioning hole, 118 is a retractable wheel, 119 is an atomizing spray gun, and 120 is a torsional spring rotating shaft. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Please refer to Figs. 1-3 The present application provides a technical solution: a spray gun without sales, comprising: an outer shell 100, a left cover body 106, a limiting ring 108 and a top extension spring 109, the left end of the outer shell 100 is provided with a left cover body 106 for spray gun isolation protection use;

[0021] The outer side of the outer shell 100 is provided with two groups of wheel seats 103 at the left and right ends, a fixed pulley 104 is arranged between the two groups of wheel seats 103 at the left end for assisting the guide of the pull rope 105, and a retractable wheel 118 is arranged between the two groups of wheel seats 103 at the right end for retracting the pull rope 105;

[0022] The inside of the shell body 100 is provided with two groups of limiting rings 108 for assisting the movement of the spray gun pipe 110, and the limiting rings 108 are provided with a top spring 109 for stretching the spray gun pipe 110. The right end of the outer side of the spray gun pipe 110 is provided with a hidden groove 112, and the inside of the hidden groove 112 is provided with a positioning plate 113.

[0023] The inside of the shell body 100 is also movably provided with a spray gun pipe 110 for conveying reaction solvent. The outer side of the spray gun pipe 110 is provided with a compression ring 111 for compressing the top spring 109 and assisting the stretching of the spray gun pipe 110. The compression ring 111 can be compressed to store elastic potential energy during the movement of the spray gun pipe 110 to the right.

[0024] The right side of the compression ring 111 is in close contact with the left end of the top spring 109, and the right end of the spray gun pipe 110 is fixedly connected with an atomizing nozzle 119 for atomizing and spraying the reaction solvent.

[0025] The connection between the left cover body 106 and the shell body 100 is provided with a torsion spring shaft 120 for assisting the rotation of the left cover body 106. The torsion spring shaft 120 can twist the left cover body 106 to the left side of the shell body 100 without external force. The right side of the left cover body 106 is fixedly provided with an embedded cover 107. The left cover body 106 can be counterclockwise rotated under the action of the torsion spring shaft 120 without external force, so as to block the left end of the shell body 100.

[0026] The embedded cover 107 is embedded with the left end of the shell body 100. The right side of the left cover body 106 is provided with a pull ring. The outer side of the fixed pulley 104 and the take-up wheel 118 is provided with a wheel groove. The inside of the wheel groove is provided with a pull rope 105. The left end of the pull rope 105 is connected with the pull ring.

[0027] The outer side of the shell body 100 is provided with a fixed plate 101 for fixing. The left side of the fixed plate 101 is vertically formed with a fixed threaded hole 102. The pull rope 105 passes through the fixed plate 101. The front side of the take-up wheel 118 is provided with a hand wheel.

[0028] The front side of the hand wheel is provided with a limiting hole. The inside of the limiting hole is provided with a limiting column. The limiting column and the limiting hole are embedded with each other. The hand wheel can drive the take-up wheel 118 to reverse, complete the control of the pull rope 105, and make the limiting column embedded in the inside of the limiting hole when the rotation of the hand wheel needs to be limited.

[0029] Please refer to Figs. 1-3, as the first embodiment of the utility model: first, when the spray gun is not used, the user pulls the spray gun pipe 110 to the right side, the compression ring 111 compresses the compression spring 109 and stores the elastic potential energy, the left end of the spray gun pipe 110 and the atomizing nozzle 119 are all collected to the inside of the shell body 100, and the embedding of the limiting column and the limiting hole is removed to make the hand wheel rotate, the loosening of the take-up wheel 118 makes the pull rope 105 move to the left side, the left cover body 106 rotates counterclockwise under the torsional force of the torsion spring rotating shaft 120, the embedding cover 107 is embedded with the shell body 100 to block the left end of the shell body 100, which can isolate and protect the spray gun pipe 110 and the atomizing nozzle 119, and second, when the spray gun is needed, the left cover 106 can be rotated to open and close, and the spray gun pipe 110 can be extended to the left side of the shell body 100 under the rebound force of the compression spring 109, thereby prolonging the service life of the spray gun.

[0030] The left end of the positioning plate 113 is connected with the damping rotating shaft 114, the outer side of the spray gun pipe 110 and the right side of the hidden groove 112 are fixedly provided with the stop block 115, the right side of the shell body 100 is provided with the limiting hole 117, the lower surface of the positioning plate 113 is provided with the limiting column 116, the limiting column 116 and the limiting hole 117 are embedded with each other, and after the spray gun pipe 110 moves to the right side, the positioning plate 113 is rotated out of the hidden groove 112, so that the limiting column 116 and the limiting hole 117 are embedded, and the position of the spray gun pipe 110 can be limited.

[0031] Please refer to Fig. 1 and Fig. 3 , as the second embodiment of the utility model: based on the above first embodiment, the user can pull the spray gun pipe 110 to the right side to complete the hidden storage of the left end of the spray gun pipe 110, and after the spray gun pipe 110 moves to the right side, the positioning plate 113 is rotated out of the hidden groove 112, so that the positioning plate 113 is in a vertical structure and the right side surface thereof is attached to the stop block 115, the limiting column 116 and the limiting hole 117 can be embedded, thereby limiting the position of the spray gun pipe 110.

[0032] The above only describes the preferred embodiment of the utility model and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A draw bead spray gun comprising: The shell body (100), the left cover body (106), the limiting ring (108) and the top extension spring (109) are characterized in that: the left end of the shell body (100) is provided with the left cover body (106) for use in spray gun isolation protection; The left and right ends of the outer side of the shell body (100) are each provided with two groups of wheel seats (103) arranged at intervals, the two groups of wheel seats (103) between the left end are provided with a fixed pulley (104) for assisting the guide of the pull rope (105), and the two groups of wheel seats (103) between the right end are provided with a winding wheel (118) for winding and unwinding the pull rope (105); The inner side of the shell body (100) is provided with two groups of limiting rings (108) arranged at intervals for assisting the movement of the spray gun pipe (110), the two groups of limiting rings (108) are provided with a top extension spring (109) for use in the top extension of the spray gun pipe (110), and the right end of the outer side of the spray gun pipe (110) is provided with a hidden groove (112), and the inner side of the hidden groove (112) is provided with a positioning plate (113).

2. A de-icing lance as claimed in claim 1, characterized in that: The inner side of the shell body (100) is further movably provided with a spray gun pipe (110) for conveying a reaction solvent, and the outer side of the spray gun pipe (110) is provided with a compression ring (111) for compressing the top extension spring (109) and the rebound force of the top extension spring (109) to assist the top extension of the spray gun pipe (110).

3. A de-icing lance as claimed in claim 2, characterized in that: The right side of the compression ring (111) is in close contact with the left end of the top extension spring (109), and the right end of the spray gun pipe (110) is fixedly connected with an atomizing nozzle (119) for atomizing and spraying the reaction solvent.

4. A de-icing lance as claimed in claim 3, characterized in that: The connection between the left cover body (106) and the shell body (100) is provided with a torsional spring rotating shaft (120) for assisting the rotation of the left cover body (106), the torsional spring rotating shaft (120) twists the left cover body (106) to the left side of the shell body (100) under the action of no external force, and the right side of the left cover body (106) is fixedly provided with an embedded cover (107).

5. A de-icing lance as claimed in claim 4, characterized in that: The embedded cover (107) is embedded with the left end of the shell body (100), the right side of the left cover body (106) is provided with a pull ring, the outer sides of the fixed pulley (104) and the winding wheel (118) are each provided with a wheel groove, the inner side of the wheel groove is provided with a pull rope (105), and the left end of the pull rope (105) is connected with the pull ring.

6. A de-icing lance as claimed in claim 5, characterized in that: The left end of the outer side of the shell body (100) is provided with a fixed plate (101) for use in fixing, the left side of the fixed plate (101) is vertically penetrated to form a fixed threaded hole (102), the pull rope (105) passes through the fixed plate (101), and the front side of the winding wheel (118) is provided with a hand wheel; The front side of the hand wheel is provided with a limiting hole, the inner side of the limiting hole is provided with a limiting column, and the limiting column and the limiting hole are embedded with each other.

7. A de-icing spray gun as defined in claim 1, wherein: The positioning plate (113) is connected with a damping rotating shaft (114) at the left end, the outer side of the spray gun pipe (110) is fixedly provided with a stopper (115) at the right side of the hidden groove (112), the right side surface of the shell (100) is provided with a positioning hole (117), and the lower surface of the positioning plate (113) is provided with a positioning column (116), and the positioning column (116) and the positioning hole (117) are mutually embedded.

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