Industrial chimney ladder detection equipment

Abstract

The present invention relates to the technical field related to chimney detection, and in particular to an industrial chimney ladder detection device. The technical problem is: due to the long-term use of the ladder, the ladder is broken, and safety accidents are very likely to occur during the climbing process of the staff, but in the existing detection method, manual detection is often used. Due to the detection at high altitude, the operation difficulty is too high. The technical solution is: an industrial chimney ladder detection device, including a mounting frame, a detection system and a marking system; the interior of the mounting frame is equipped with a detection system for detecting the ladder; the front of the detection system is connected to a marking system for marking a damaged ladder. The present invention realizes the regular detection of the ladder rod on the chimney, and according to the different angles of the ladder rod fracture, the ladder rod is rotated and debugged at multiple angles by moving on the chimney, so that the area where the ladder rod is broken is more thoroughly detected, and the detected ladder rod is marked to facilitate maintenance personnel to carry out maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field related to chimney detection, and in particular to industrial chimney ladder detection equipment. Background Art

[0002] Industrial chimneys are generally composed of concrete walls, insulation layers, inner walls and anti-corrosion layers. The inner wall includes the inner lining and the inner tube. During the use of the chimney, the inner lining and the concrete wall will slip due to the different thermal expansion coefficients and heating temperatures of the respective materials, thus creating a gap. The ladder on the outer surface of the chimney is in a horizontal U-shape. Due to various reasons such as various weather conditions, the ladder on the chimney is corroded and broken.

[0003] In the prior art, since the chimney ladder needs to be used frequently, the ladder may break during the climbing process due to long-term use, and safety accidents are very likely to occur during the climbing process. However, in the existing detection method, manual detection is often used. Due to the detection at high altitude, the operation difficulty is too high, the maintenance cycle is too long, and it is not only time-consuming and laborious.

[0004] In summary, we urgently need an industrial chimney ladder detection equipment to overcome the above problems. Summary of the invention

[0005] In order to overcome the problem that the ladder may break due to long-term use, and safety accidents are very likely to occur during the climbing process of workers, but in the existing detection methods, manual detection is often used. Due to the detection at high altitude, the operation difficulty is too high. The present invention provides an industrial chimney ladder detection device.

[0006] The technical solution is: an industrial chimney ladder detection device, including a mounting frame, a detection system and a marking system; the detection system for detecting ladders is installed inside the mounting frame; the front of the detection system is connected to a marking system for marking damaged ladders.

[0007] As an improvement on the above scheme, the detection system includes a telescopic plate, a first bearing seat, a sliding frame, a first elastic member, a first limit block, a first electric push rod, a wedge block, a toothed plate, a fixed frame, a sliding rod, a first connecting plate, a limit shaft, a second elastic member, a limit rod, a second bearing seat, a telescopic rod and an electric clamp; the interior of the mounting frame is fixedly connected with a toothed plate; a through slide groove is provided on the toothed plate, and a sliding rod is slidably connected in the through slide groove; the sliding rod is connected to the marking system; a fixed frame is rotatably connected to the sliding rod; the lower part of the fixed frame is movably connected to two left-right symmetrical first electric push rods; the telescopic ends of the two first electric push rods are movably connected to a telescopic plate; four rectangularly distributed first bearing seats are fixedly connected to the upper surface of the telescopic plate; the upper parts of the four first bearing seats are each rotatably connected to a sliding frame through a rotating shaft; the interiors of the four sliding frames are each fixedly connected to a first elastic member; the upper parts of the four first elastic members are each fixedly connected to A first limit block; four first limit blocks are slidably connected to four sliding frames; two left-right symmetrical wedge blocks are fixedly connected to the telescopic plate; the front part of the fixed frame is rotatably connected to two left-right symmetrical first connecting plates through a rotating shaft; the rear part of the fixed frame is rotatably connected to another two left-right symmetrical first connecting plates through a rotating shaft; the middle parts of the four first connecting plates are each fixedly connected to a limit shaft; a second elastic member is connected between the two limit shafts located at the front; another second elastic member is connected between the two limit shafts located at the rear; a limit rod is rotatably connected between the upper parts of the two first connecting plates located on the right; another limit rod is rotatably connected between the upper parts of the two first connecting plates located on the left; two left-right symmetrical second bearing seats are fixedly connected to the upper surface of the fixed frame; the upper parts of the two second bearing seats are each rotatably connected to a telescopic rod through a rotating shaft; the upper parts of the two telescopic rods are each rotatably connected to an electric clamp through a rotating shaft.

[0008] As an improvement to the above solution, a torsion spring is provided on the rotating shaft on the first bearing seat.

[0009] As an improvement to the above solution, an L-shaped limiting block is provided on the upper portion of the sliding frame.

[0010] As an improvement to the above solution, a torsion spring is provided on the rotating shaft of the second bearing seat.

[0011] As an improvement on the above scheme, the marking system includes a third elastic member, a second limit block, a third bearing seat, a second connecting plate, a second electric push rod, a negative pressure telescopic tube, a nozzle and a third limit block; the front part of the sliding rod is connected to the third elastic member; the front part of the third elastic member is fixedly connected to the second limit block; two left-right symmetrical third bearing seats are fixedly connected to the second limit block; the two third bearing seats are each rotatably connected to a second connecting plate through a rotating shaft; the opposite sides of the two second connecting plates are rotatably connected to a second electric push rod; the two second electric push rods are distributed symmetrically on the left and right, and the telescopic ends of the two second electric push rods are fixedly connected; the upper parts of the two second connecting plates are each rotatably connected to a nozzle through a rotating shaft; the upper parts of the two nozzles are each fixedly connected to a third limit block; the two second connecting plates are each fixedly connected to a negative pressure telescopic tube; the other ends of the two negative pressure telescopic tubes are connected to the two nozzles.

[0012] As an improvement to the above solution, the upper portion of the second limit block is arranged as an inclined surface, and the lower portion is arranged as an arc-shaped structure for fitting against the surface of the ladder rod.

[0013] As an improvement to the above solution, a torsion spring is provided on the second connecting plate and the rotating shaft on the nozzle.

[0014] As an improvement of the above solution, the negative pressure telescopic tube is arranged in an arc shape to push the powder in the nozzle.

[0015] The present invention has the following advantages: the present invention realizes the regular inspection of the climbing rod on the chimney, and performs multi-angle rotation debugging according to the different broken angles of the climbing rod and by using the method of moving on the chimney, so that the broken area of ​​the climbing rod can be inspected more thoroughly, and the detected climbing rod is marked to facilitate maintenance personnel to carry out maintenance.

[0016] In the present invention, a detection system is provided to realize detection of the ladder rod on the chimney, and a left-right swinging method is adopted to perform multi-angle adjustment, so as to avoid that when the ladder rod has a wedge-shaped fracture and the angle of the pushing force to be detected is opposite to the wedge-shaped fracture, the ladder rod cannot be pushed, causing deformation and making it impossible to detect.

[0017] In the present invention, a marking system is provided to mark the detected problematic ladder rods, and a powder spraying component is triggered in a linkage manner to perform marking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the first structure of the industrial chimney ladder detection equipment of the present invention;

[0019] Figure 2 This is a second structural schematic diagram of the industrial chimney ladder detection equipment of the present invention;

[0020] Figure 3It is a schematic diagram of the first structure of the detection system of the industrial chimney ladder detection equipment of the present invention;

[0021] Figure 4 A second structural schematic diagram of the detection system of the industrial chimney ladder detection device of the present invention;

[0022] Figure 5 It is a partial structural schematic diagram of the detection system of the industrial chimney ladder detection equipment of the present invention;

[0023] Figure 6 It is an enlarged view of the A area of ​​the detection system of the industrial chimney ladder detection equipment of the present invention;

[0024] Figure 7 It is an enlarged view of area B of the detection system of the industrial chimney ladder detection equipment of the present invention;

[0025] Figure 8 A schematic diagram of the first structure of the marking system of the industrial chimney ladder detection equipment of the present invention;

[0026] Fig. 9 A second structural schematic diagram of the marking system of the industrial chimney ladder detection equipment of the present invention;

[0027] Fig.10 It is a schematic diagram of the partial structure of the marking system of the industrial chimney ladder detection equipment of the present invention.

[0028] Numbered names in the figure: 1-installation frame, 2-detection system, 3-marking system, 201-telescopic plate, 202-first bearing seat, 203-sliding frame, 204-first elastic member, 205-first limit block, 206-first electric push rod, 207-wedge block, 208-tooth plate, 209-fixed frame, 2010-sliding rod, 2011-first connecting plate, 2012-limiting shaft, 2013-second elastic member, 2014-limiting rod, 2015-second bearing seat, 2016-telescopic rod, 2017-electric clamp, 301-third elastic member, 302-second limit block, 303-third bearing seat, 304-second connecting plate, 305-second electric push rod, 306-negative pressure telescopic tube, 307-nozzle, 308-third limit block. DETAILED DESCRIPTION

[0029] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0030] Example 1

[0031] An industrial chimney ladder detection device, such as Figure 1-10 As shown, it includes an installation frame 1, a detection system 2 and a marking system 3; the detection system 2 is installed inside the installation frame 1; and the front of the detection system 2 is connected to the marking system 3.

[0032] First, the staff moves the industrial chimney ladder detection equipment and fixes it on the ladder of the chimney, then controls the detection system 2 to drive the industrial chimney ladder detection equipment to move upward, and at the same time detects the ladder on the chimney. When it is detected that one side of the ladder on the chimney is broken, the marking system 3 is simultaneously linked to mark the damaged part to facilitate maintenance personnel to repair.

[0033] Example 2

[0034] On the basis of Example 1, Figure 1-10As shown, the detection system 2 includes a telescopic plate 201, a first bearing seat 202, a sliding frame 203, a first elastic member 204, a first limit block 205, a first electric push rod 206, a wedge block 207, a tooth plate 208, a fixed frame 209, a sliding rod 2010, a first connecting plate 2011, a limit shaft 2012, a second elastic member 2013, a limit rod 2014, a second bearing seat 2015, a telescopic rod 2016 and an electric clamp 2017; the interior of the mounting frame 1 is fixedly connected with the tooth plate 208; a through slide groove is provided on the tooth plate 208, and the sliding rod 2010 is slidably connected in the through slide groove 010; the sliding rod 2010 is connected to the marking system 3; the sliding rod 2010 is rotatably connected to a fixed frame 209; the lower part of the fixed frame 209 is hinged with two left-right symmetrical first electric push rods 206; the telescopic ends of the two first electric push rods 206 are hinged with a telescopic plate 201; the upper surface of the telescopic plate 201 is fixedly connected with four first bearing seats 202 distributed in a rectangular shape; the upper parts of the four first bearing seats 202 are rotatably connected to a sliding frame 203 through a rotating shaft; the interior of the four sliding frames 203 is fixedly connected with a first elastic member 204; the upper parts of the four first elastic members 204 Each of the first limit blocks 205 is fixedly connected; the four first limit blocks 205 are slidably connected to the four sliding frames 203; the telescopic plate 201 is fixedly connected with two left-right symmetrical wedge blocks 207; the front part of the fixed frame 209 is rotatably connected to two left-right symmetrical first connecting plates 2011 through a rotating shaft; the rear part of the fixed frame 209 is rotatably connected to another two left-right symmetrical first connecting plates 2011 through a rotating shaft; the middle part of the four first connecting plates 2011 is fixedly connected with a limit shaft 2012; a second elastic member 2013 is connected between the two limit shafts 2012 located in the front; Another second elastic member 2013 is connected between the two limit shafts 2012 located at the rear; a limit rod 2014 is rotatably connected between the upper parts of the two first connecting plates 2011 located on the right; another limit rod 2014 is rotatably connected between the upper parts of the two first connecting plates 2011 located on the left; two left-right symmetrical second bearing seats 2015 are fixedly connected to the upper surface of the fixed frame 209; the upper parts of the two second bearing seats 2015 are each rotatably connected to a telescopic rod 2016 via a rotating shaft; the upper parts of the two telescopic rods 2016 are each rotatably connected to an electric clamp 2017 via a rotating shaft.

[0035] A torsion spring is provided on the rotating shaft on the first bearing seat 202 .

[0036] An L-shaped limiting block is arranged on the upper portion of the sliding frame 203 .

[0037] A torsion spring is provided on the rotating shaft of the second bearing seat 2015 .

[0038] The marking system 3 includes a third elastic member 301, a second limit block 302, a third bearing seat 303, a second connecting plate 304, a second electric push rod 305, a negative pressure telescopic tube 306, a nozzle 307 and a third limit block 308; the front of the sliding rod 2010 is connected to the third elastic member 301; the front of the third elastic member 301 is fixedly connected to the second limit block 302; the second limit block 302 is fixedly connected to two third bearing seats 303 that are symmetrical on both sides; the two third bearing seats 303 are rotatably connected to a second connecting plate 304 through a rotating shaft 04; The two second connecting plates 304 are rotatably connected to the opposite sides with a second electric push rod 305; The two second electric push rods 305 are symmetrically distributed on the left and right, and the telescopic ends of the two second electric push rods 305 are fixedly connected; The upper parts of the two second connecting plates 304 are rotatably connected to a nozzle 307 through a rotating shaft; The upper parts of the two nozzles 307 are each fixedly connected to a third limit block 308; The two second connecting plates 304 are each fixedly connected to a negative pressure telescopic tube 306; The other ends of the two negative pressure telescopic tubes 306 are connected to the two nozzles 307.

[0039] The second limit block 302 has an upper portion with an inclined surface and a lower portion with an arc-shaped structure for fitting against the surface of the ladder rod.

[0040] Torsion springs are provided on the rotating shafts on the second connecting plate 304 and the nozzle 307 .

[0041] The negative pressure telescopic tube 306 is arranged in an arc shape, and is used to push the powder in the nozzle 307 .

[0042] The following description of the rotation direction is based on the view from the front to the back. First, the telescopic plate 201 is placed on the ladder rod of the chimney ladder, and then the four sliding frames 203 are fixed on the ladder rod of the upper ladder. At the same time, the two electric clamps 2017 clamp the ladder rods of the ladder above the four sliding frames 203, and then the first electric push rod 206 on the right is controlled to push the telescopic plate 201 so that the telescopic plate 201 fits the ladder rod below, and at the same time drives the fixed frame 209 to move upward. Under the limiting action of the sliding rod 210, the fixed frame 209 The fixed frame 209 rotates counterclockwise with the sliding rod 2010 as the rotation center, and at the same time drives the two first connecting plates 2011 on the right to move upward, and the two first connecting plates 2011 on the right drive the right limiting rod 2014 to move upward, and the limiting rod 2014 is limited by the tooth plate 208, so that the limiting rod 2014 moves upward into the upper tooth groove of the tooth plate 208, and at the same time the fixed frame 209 drives the second bearing seat 2015 on the right to move upward, and the second bearing seat 2015 drives the telescopic rod 2016 to move upward, and the telescopic rod 2016 drives the electric clamp 2017 to move upward, and under the limiting effect of the ladder rod clamped by the electric clamp 2017, the telescopic rod 2016 rotates clockwise with the rotating shaft on the second bearing seat 2015 as the rotation center, and at the same time compresses the telescopic rod 2016, and the telescopic rod 2016 pushes the electric clamp 2017, and the electric clamp 2017 squeezes the ladder rod. When the ladder rod clamped by the electric clamp 2017 breaks, the telescopic rod 2016 pushes the electric clamp 2017 to expand outward, driving one end of the ladder rod to expand outward, so that the ladder rod approaches and connects The third limit block 308 on the right is pushed by the touch, and the third limit block 308 pushes the nozzle 307 to move to the right, so that the nozzle 307 rotates clockwise with the rotating shaft on the second connecting plate 304 as the rotation center, and squeezes the negative pressure telescopic tube 306 to compress the gas inside it into the nozzle 307, so that the nozzle 307 sprays powder and marks it on the surface of the chimney, and then controls the first electric push rod 206 on the left to drive the components connected to it to operate in the same working mode, so that the two limit rods 2014 move to the uppermost tooth groove of the tooth plate 208.

[0043] When the two limiting rods 2014 move into the uppermost tooth groove of the tooth plate 208, the two second electric push rods 305 are controlled to retract, and the two second electric push rods 305 drive the two second connecting plates 304 to flip toward each other, and the two second connecting plates 304 rotate with the rotating shafts on the two third bearing seats 303 as the rotation center, and the two second connecting plates 304 drive the components connected thereto to rotate accordingly, that is, drive the second connecting plates 304, the second electric push rods 305, the negative pressure telescopic tube 306, the nozzle 307 and the third limiting block 308 to rotate accordingly, and control The two first electric push rods 206 contract, and the two first electric push rods 206 drive the telescopic plate 201 to move upward, and at the same time, the telescopic plate 201 contracts, and the telescopic plate 201 drives the two wedge blocks 207 to approach the tooth plate 208 and contact the lower part of the tooth plate 208. Then, in the process of further contraction of the two first electric push rods 206, the telescopic plate 201 is driven to move upward, and the telescopic plate 201 drives the two wedge blocks 207 to move upward, and the two wedge blocks 207 drive the tooth plate 208 to move upward, and the tooth plate 208 moves upward to squeeze the two limit rods 2014. Under the limiting action of the tooth plate 208, the two limiting rods 2014 move downward on the tooth plate 208, so that the two limiting rods 2014 are stuck in the tooth grooves at the lower part of the tooth plate 208. At the same time, when the telescopic plate 201 moves upward, the four first limiting blocks 205 are driven to move further. The ladder rods at the upper limit of the four first limiting blocks 205 will squeeze the four first elastic members 204, and the four sliding frames 203 move into the operating range of the upper ladder rods. At the same time, the telescopic plate 201 moves upward to the ladder rods above it, and then controls the two first electric push rods 203 to move upward. 06 pushes the telescopic plate 201 to approach and contact the climbing rod, and at the same time, the four sliding frames 203 are simultaneously limited within the climbing rod within their operating range, and then the two climbing rods are controlled to release, and then under the action of the torsion springs on the rotating shafts of the two second bearing seats 2015, the two telescopic rods 2016 are moved to rotate with the rotating shafts on the second bearing seats 2015 as the rotation center, driving the two electric clamps 2017 to approach the next climbing rod to be tested, and then the two electric clamps 2017 are controlled to clamp the next climbing rod to be tested, and then the testing is continued with the same working steps.

[0044] During the upward movement of the detection system 2, the upper part of the third elastic member 301 is squeezed by the climbing rod, forcing the third elastic member 301 to be compressed, and the third elastic member 301 drives the second limit block 302 to move backward, and the second limit block 302 drives the components connected thereto to move backward, that is, drives the third bearing seat 303, the second connecting plate 304, the second electric push rod 305, the negative pressure telescopic tube 306, the nozzle 307 and the third limit block 308 to move backward. When the second limit block 302 crosses the climbing rod, the third elastic member 301 stretches and pushes the second limit block 302 to move forward, and the second limit block 302 drives the components connected thereto to move forward, and the lower part of the second limit block 302 limits the climbing rod.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An industrial chimney ladder detection device, comprising a mounting frame (1); wherein: It also includes a detection system (2) and a marking system (3); the detection system (2) for detecting ladders is installed inside the installation frame (1); the front of the detection system (2) is connected to a marking system (3) for marking damaged ladders; The detection system (2) comprises a telescopic plate (201), a first bearing seat (202), a sliding frame (203), a first elastic member (204), a first limiting block (205), a first electric push rod (206), a wedge block (207), a tooth plate (208), a fixed frame (209), a sliding rod (2010), a first connecting plate (2011), a limiting shaft (2012), a second elastic member (2013), a limiting rod (2014), a second bearing seat (2015), a telescopic rod (2016) and an electric clamp (2017); the tooth plate (208) is fixedly connected to the interior of the mounting frame (1); a through slide groove is provided on the tooth plate (208), and a sliding groove is provided in the through slide groove. The sliding rod (2010) is movably connected to the marking system (3); the sliding rod (2010) is connected to a fixed frame (209) rotatably; the lower part of the fixed frame (209) is movably connected to two left-right symmetrical first electric push rods (206); the telescopic ends of the two first electric push rods (206) are movably connected to a telescopic plate (201); the upper surface of the telescopic plate (201) is fixedly connected to four first bearing seats (202) distributed in a rectangular shape; the upper parts of the four first bearing seats (202) are each rotatably connected to a sliding frame (203) via a rotating shaft; the interior of each of the four sliding frames (203) is fixedly connected to a first elastic member (204); the four The upper part of each of the first elastic members (204) is fixedly connected to a first limiting block (205); the four first limiting blocks (205) are slidably connected to the four sliding frames (203); two left-right symmetrical wedge blocks (207) are fixedly connected to the telescopic plate (201); the front part of the fixed frame (209) is rotatably connected to two left-right symmetrical first connecting plates (211) via a rotating shaft; the rear part of the fixed frame (209) is rotatably connected to another two left-right symmetrical first connecting plates (211) via a rotating shaft; the middle part of each of the four first connecting plates (2011) is fixedly connected to a limiting shaft (212); a second elastic member is connected between the two limiting shafts (212) located at the front. (2013); another second elastic member (2013) is connected between the two limiting shafts (2012) located at the rear; a limiting rod (2014) is rotatably connected between the upper parts of the two first connecting plates (2011) located on the right; another limiting rod (2014) is rotatably connected between the upper parts of the two first connecting plates (2011) located on the left; two left-right symmetrical second bearing seats (2015) are fixedly connected to the upper surface of the fixed frame (209); the upper parts of the two second bearing seats (2015) are rotatably connected to a telescopic rod (2016) via a rotating shaft; the upper parts of the two telescopic rods (2016) are rotatably connected to an electric clamp (2017) via a rotating shaft.

2. The industrial chimney ladder detection equipment according to claim 1 is characterized in that: A torsion spring is provided on the rotating shaft on the first bearing seat (202).

3. The industrial chimney ladder detection equipment according to claim 1 is characterized in that: An L-shaped limiting block is arranged on the upper part of the sliding frame (203).

4. The industrial chimney ladder detection equipment according to claim 1 is characterized in that: A torsion spring is arranged on the upper rotating shaft of the second bearing seat (2015).

5. The industrial chimney ladder detection equipment according to claim 4 is characterized in that: The marking system (3) comprises a third elastic member (301), a second limiting block (302), a third bearing seat (303), a second connecting plate (304), a second electric push rod (305), a negative pressure telescopic tube (306), a nozzle (307) and a third limiting block (308); the front part of the sliding rod (2010) is connected to the third elastic member (301); the front part of the third elastic member (301) is fixedly connected to the second limiting block (302); the second limiting block (302) is fixedly connected to two third bearing seats (303) that are symmetrical on both sides; the two third bearing seats (303) are rotatably connected to a second connecting member via a rotating shaft. The connecting plate (304) comprises a connecting plate (304); the two second connecting plates (304) are rotatably connected to the opposite sides thereof with a second electric push rod (305); the two second electric push rods (305) are symmetrically distributed on the left and right sides, and the telescopic ends of the two second electric push rods (305) are fixedly connected; the upper parts of the two second connecting plates (304) are rotatably connected to a nozzle (307) via a rotating shaft; the upper parts of the two nozzles (307) are respectively fixedly connected to a third limiting block (308); the two second connecting plates (304) are respectively fixedly connected to a negative pressure telescopic tube (306); and the other ends of the two negative pressure telescopic tubes (306) are connected to the two nozzles (307).

6. The industrial chimney ladder detection equipment according to claim 5 is characterized in that: The second limit block (302) has an upper portion arranged as an inclined surface and a lower portion arranged as an arc-shaped structure, and is used to fit the surface of the ladder rod.

7. The industrial chimney ladder detection equipment according to claim 5 is characterized in that: Torsion springs are provided on the rotating shafts on the second connecting plate (304) and the nozzle (307).

8. The industrial chimney ladder detection equipment according to claim 7 is characterized in that: The negative pressure telescopic tube (306) is arranged in an arc shape and is used to push the powder in the nozzle (307).

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