Reverse expanding rotary kiln for treating low-tin materials

Abstract

Relates to the field of rotary kilns, and discloses a reverse diameter-expanding rotary kiln for processing low-tin materials, which comprises a rotary kiln, a fixing frame arranged at the lower end of the rotary kiln and used for supporting the rotary kiln, and a power part arranged on the fixing frame and used for driving the rotary kiln to rotate, and further comprises a feeder, the feeding port is arranged at the feeding end of the rotary kiln; the crushing unit is arranged in the feeder and is connected with the rotary kiln; the screening unit is arranged in the feeder, located below the smashing unit and used for screening the smashed materials, the materials can be smashed and screened before entering the rotary kiln, the particle sizes of the materials entering the rotary kiln can be uniform, and therefore the reaction efficiency and uniformity are improved; and due to the reverse diameter expansion design, the fluidity and the heat exchange efficiency of the materials can be improved, and therefore the treatment effect of the low-tin materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary kilns, in particular to a reverse diameter expansion rotary kiln for processing low-tin materials. Background Art

[0002] In the existing industrial processing flow, rotary kilns are widely used in the heat treatment and processing of various materials. Especially when processing low-tin materials, the role of rotary kilns is particularly critical. Traditional rotary kiln equipment is prone to low tin recovery when processing low-tin materials, so reverse expansion rotary kilns are generally used to process low-tin materials. Compared with traditional rotary kilns, the reverse expansion design helps to improve the fluidity and heat exchange efficiency of materials, thereby improving the processing effect of low-tin materials.

[0003] The existing equipment has the following disadvantages: when the traditional rotary kiln processes materials, due to the uneven particle size of the materials, when drying the materials, the larger particles are not dried sufficiently, resulting in low processing efficiency and high energy consumption.

[0004] Therefore, the present application proposes a reverse expansion rotary kiln for processing low-tin materials to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a reverse expansion rotary kiln for processing low-tin materials to solve the problems of uneven particle size of the above-mentioned materials, insufficient drying of larger particles when drying the materials, resulting in low processing efficiency and high energy consumption.

[0006] To achieve the above object, the present invention provides the following technical solution: a reverse expansion diameter rotary kiln for processing low-tin materials, comprising a rotary kiln, a fixed frame arranged at the lower end of the rotary kiln for supporting the rotary kiln, and a power member arranged on the fixed frame for driving the rotary kiln to rotate, and further comprising:

[0007] A feeder, arranged at a feeding end of the rotary kiln, for feeding materials into the interior of the rotary kiln;

[0008] A crushing unit, disposed inside the feeder and connected to the rotary kiln, for crushing the material inside the feeder;

[0009] The screening unit is arranged inside the feeder and below the crushing unit, and is used for screening the crushed material.

[0010] Wherein, the crushing unit includes a gear ring fixed on the outer end surface of the rotary kiln, a transmission member arranged on the feeder and connected to the gear ring, and a crushing member arranged inside the feeder and connected to the transmission member, and the screening unit is connected to the crushing member.

[0011] Among them, the transmission part includes a first crushing shaft rotatably arranged on the feeder, a second crushing shaft rotatably arranged on the feeder, a first gear sleeved on the first crushing shaft and meshingly connected with the gear ring, and a second gear sleeved on the second crushing shaft, and the first gear and the second gear are meshingly connected.

[0012] Wherein, the crushing part includes a first crushing roller fixed on the second crushing shaft, a second crushing roller fixed on the second crushing shaft, a first crushing knife fixed on the first crushing roller and a second crushing knife fixed on the second crushing roller, and the first crushing knife and the second crushing knife are arranged alternately.

[0013] A crushing box is arranged inside the feeder at positions corresponding to the first crushing knife and the second crushing knife, and a feeding port is opened at the upper end of the feeder.

[0014] Wherein, a feed plate is fixedly provided at the lower end of the crushing box, and a screen is slidably provided on the inner side of the feed plate;

[0015] A sliding block is arranged on the side of the screen close to the blanking plate, a sliding groove for movement of the sliding block is arranged at a position of the blanking plate corresponding to the sliding block, and an elastic part is arranged at a position inside the sliding groove at the upper end of the sliding block.

[0016] Among them, the screening unit includes a connecting shaft fixed on the second crushing shaft, a transmission wheel movably mounted on the connecting shaft and eccentrically arranged with the connecting shaft, a pushing member arranged on the transmission wheel, and a knocking member arranged at the lower end of the pushing member for knocking the screen, and the knocking member is located below the screen.

[0017] Wherein, the pushing member includes a connecting block rotatably arranged at the lower end of the transmission wheel and a pushing rod arranged at the lower end of the connecting block, a guide plate for guiding the pushing rod is arranged at the position of the feeder corresponding to the pushing rod, and the knocking member is arranged at the lower end of the pushing rod.

[0018] Among them, the knocking member includes a knocking rod rotatably arranged on the pushing rod, a mounting shaft fixed on the feeder, and a knocking block arranged on the side of the knocking rod away from the pushing rod, the knocking rod is passed through the feeder, the knocking block is located inside the feeder and below the screen, and a mounting groove for the knocking rod to rotate is opened at the position of the feeder corresponding to the knocking rod.

[0019] A feed port is provided on one side of the rotary kiln connected to the feeder, a discharge port is provided on the other side of the rotary kiln, and an inner cylinder is provided inside the rotary kiln, the diameter of the inner cylinder gradually decreases from the feed port to the discharge port.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When the low-tin material is recycled and processed, the heating device of the rotary kiln is turned on to heat the inside of the rotary kiln. When the material is heated to the specified working temperature, the material is transported to the feeder through the conveying device, and then after being crushed by the crushing unit, the material with uniform size falls onto the guide plate, then falls into the feed port of the rotary kiln, and then enters the inner cylinder. The power part drives the rotary kiln to rotate on the fixed frame, and the material is continuously tumbled and mixed in the kiln for high-temperature treatment. The rotary kiln is set for reverse expansion, that is, the inner diameter of the inner cylinder gradually increases toward the side close to the feeder. Such a design makes the reaction pool have a larger volume, which is conducive to the full reaction of the material. By setting the crushing unit and the screening unit, the material can be crushed and screened before entering the rotary kiln, so that the particle size of the material entering the rotary kiln can be uniform, thereby improving the reaction efficiency and uniformity, and indirectly reducing the consumption of resources. The reverse expansion design helps to improve the fluidity and heat exchange efficiency of the material, thereby improving the treatment effect of the low-tin material.

[0022] 2. The present invention drives the gear ring to rotate during the rotation of the rotary kiln, and then the gear ring can engage with the transmission member to drive the transmission member to rotate, and then the transmission member drives the crushing member to rotate to crush the material inside the feeder. The crushing member is driven to rotate by the rotary kiln, and the material is crushed by the power of the rotary kiln without the aid of other power equipment, thereby reducing energy consumption. The crushing member can crush and screen the material before it enters the rotary kiln, which can ensure that the material has a suitable particle size when entering the rotary kiln, thereby improving the reaction efficiency and uniformity. The reverse expansion rotary kiln is particularly suitable for processing low-tin materials, but the expansion ratio, length, inclination and other parameters can also be adjusted as needed to adapt to different types of material processing, showing its wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of an embodiment of the present invention in a front view;

[0025] Figure 3 It is a schematic structural diagram of one side of the discharge port of a rotary kiln in one embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of a cross-section structure in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure inside the feeder in one embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of a transmission member in one embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the connection between the screen and the crushing box in one embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a crushing member in one embodiment of the present invention;

[0031] Fig. 9 This is a schematic diagram of the structure of a screening unit in one embodiment of the present invention;

[0032] Fig.10 This is a schematic structural diagram of a crushing unit in one embodiment of the present invention;

[0033] Fig.11 It is a schematic structural diagram of a crushing unit in front view in one embodiment of the present invention;

[0034] Fig.12 This is a schematic diagram of the structure of a crushing unit in a top view according to an embodiment of the present invention;

[0035] Fig.13 It is a schematic diagram of the structure of the connection between the knocking rod and the feeder in one embodiment of the present invention.

[0036] In the figure: 1, rotary kiln; 11, discharge port; 12, inner tube; 13, feed port; 2, fixed frame; 3, feeder; 31, feed port; 32, guide plate; 33, crushing box; 34, unloading plate; 341, slide; 35, screen; 351, slider; 352, elastic member; 36, mounting slot; 4, power member; 5, crushing unit; 51, gear ring; 52, transmission member; 521, first gear; 522, first gear Two gears; 523, the first crushing shaft; 524, the second crushing shaft; 54, the crushing member; 541, the first crushing roller; 542, the second crushing roller; 543, the first crushing knife; 544, the second crushing knife; 6, the screening unit; 61, the connecting shaft; 62, the transmission wheel; 63, the connecting block; 64, the pushing rod; 65, the knocking member; 651, the knocking rod; 652, the mounting shaft; 653, the knocking block; 66, the guide plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-13 The present invention provides a technical solution: a reverse expansion rotary kiln for processing low-tin materials, comprising a rotary kiln 1, a fixed frame 2 arranged at the lower end of the rotary kiln 1 for supporting the rotary kiln 1, and a power member 4 arranged on the fixed frame 2 for driving the rotary kiln 1 to rotate, and also comprising:

[0039] A feeder 3 is provided at the feeding end of the rotary kiln 1 and is used to feed materials into the interior of the rotary kiln 1;

[0040] A crushing unit 5 is arranged inside the feeder 3 and connected to the rotary kiln 1, and is used to crush the material inside the feeder 3;

[0041] The screening unit 6 is arranged inside the feeder 3 and below the crushing unit 5, and is used to screen the crushed material;

[0042] A feed port 13 is provided on one side of the rotary kiln 1 connected to the feeder 3, and a discharge port 11 is provided on the other side of the rotary kiln 1. An inner cylinder 12 is provided inside the rotary kiln 1, and the diameter of the inner cylinder 12 gradually decreases from the feed port 13 to the discharge port 11. A guide plate 32 is provided inside the feeder 3, and the guide plate 32 extends into the inside of the feed port 13.

[0043] It should be noted that, during operation, when low-tin materials are recycled, the heating device of the rotary kiln 1 is turned on to heat the inside of the rotary kiln 1. When heated to the specified working temperature, the materials are transported to the feeder 3 through the conveying device, and then after being crushed by the crushing unit 5, the materials of uniform size fall onto the guide plate 32, and then fall into the feed port 13 of the rotary kiln 1, and then enter the inner tube 12. The power member 4 drives the rotary kiln 1 to rotate on the fixed frame 2, and the materials are continuously tumbled and mixed in the kiln for high-temperature treatment. The rotary kiln 1 is a reverse expansion arrangement, that is, the inner diameter of the inner cylinder 12 gradually increases toward the side close to the feeder 3. Such a design enables the reaction pool to have a larger volume, which is conducive to the full reaction of the material. By setting the crushing unit 5 and the screening unit 6, the material can be crushed and screened before entering the rotary kiln 1, so that the particle size of the material entering the rotary kiln 1 can be uniform, thereby improving the reaction efficiency and uniformity, and indirectly reducing the consumption of resources. The reverse expansion design is helpful to improve the fluidity and heat exchange efficiency of the material, thereby improving the treatment effect of the low-tin material.

[0044] In one embodiment, the crushing unit 5 includes a gear ring 51 fixed to the outer end surface of the rotary kiln 1, a transmission member 52 arranged on the feeder 3 and connected to the gear ring 51, and a crushing member 54 arranged inside the feeder 3 and connected to the transmission member 52, and the screening unit 6 is connected to the crushing member 54.

[0045] This design, see Figure 4-6 During the rotation of the rotary kiln 1, the gear ring 51 is driven to rotate, and then the gear ring 51 can mesh with the transmission member 52 to drive the transmission member 52 to rotate, and then the transmission member 52 drives the crushing member 54 to rotate to crush the material inside the feeder 3. The crushing member 54 is driven to rotate by the rotary kiln 1, and the material is crushed by the power of the rotary kiln 1. No other power equipment is required to reduce energy consumption. The crushing member 54 can crush and screen the material before it enters the rotary kiln 1, so as to ensure that the material has a suitable particle size when entering the rotary kiln 1, thereby improving the reaction efficiency and uniformity. The reverse expansion rotary kiln 1 is particularly suitable for processing low-tin materials, but the expansion ratio, length, inclination and other parameters can also be adjusted as needed to adapt to different types of material processing, showing its wide applicability.

[0046] In one embodiment, the transmission member 52 includes a first crushing shaft 523 rotatably disposed on the feeder 3, a second crushing shaft 524 rotatably disposed on the feeder 3, a first gear 521 sleeved on the first crushing shaft 523 and meshingly connected to the gear ring 51, and a second gear 522 sleeved on the second crushing shaft 524, and the first gear 521 and the second gear 522 are meshingly connected.

[0047] This design, see Figure 8 The gear ring 51 meshes with the first gear 521 to drive the first crushing shaft 523 to rotate, and the first gear 521 meshes with the second gear 522 to drive the second crushing shaft 524 to rotate. The meshing connection between the first gear 521 and the second gear 522 realizes stable power transmission. This design ensures that the crushing unit 5 can work continuously and smoothly, improves the reliability and durability of the equipment, and drives the first crushing shaft 523 and the second crushing shaft 524 to rotate through the power of the rotary kiln 1 itself, thereby improving the utilization rate of energy.

[0048] In one embodiment, the crushing member 54 includes a first crushing roller 541 fixed on the second crushing shaft 524, a second crushing roller 542 fixed on the second crushing shaft 524, a first crushing knife 543 fixed on the first crushing roller 541 and a second crushing knife 544 fixed on the second crushing roller 542, and the first crushing knife 543 and the second crushing knife 544 are arranged alternately.

[0049] This design, see Figure 6-10The first crushing knife 543 and the second crushing knife 544 are driven by the first crushing roller 541 and the second crushing roller 542 to rotate and crush the materials entering above the first crushing knife 543 and the second crushing knife 544. The first crushing knife 543 and the second crushing knife 544 are staggered, which can make it easier for the materials to reach a uniform particle size after multiple cuttings, which is beneficial to the uniformity and efficiency of subsequent reactions, thereby greatly improving the crushing efficiency, and helping to reduce the blockage and adhesion of materials during the crushing process, ensuring that the materials can smoothly pass through the crushing area and enter the rotary kiln 1 for reaction.

[0050] In one embodiment, a crushing box 33 is disposed inside the feeder 3 at positions corresponding to the first crushing knife 543 and the second crushing knife 544 , and a feed inlet 31 is opened at the upper end of the feeder 3 .

[0051] This design, see Figure 6-8 ,as well as Figure 10-12 The shape of the crushing box 33 is set corresponding to the installation shape of the first crushing knife 543 and the second crushing knife 544, so that the first crushing knife 543 and the second crushing knife 544 can contact the side wall of the crushing box 33 to improve the crushing efficiency of the material inside the crushing box 33.

[0052] In one embodiment, a blanking plate 34 is fixedly provided at the lower end of the crushing box 33, and a screen 35 is slidably provided inside the blanking plate 34;

[0053] A slider 351 is provided on the side of the blanking plate 34 near the screen 35, and a slide groove 341 for the slider 351 to move is provided at the position of the blanking plate 34 corresponding to the slider 351. An elastic member 352 is provided at the upper end of the slider 351 at the position inside the slide groove 341, and the elastic member 352 is made of a damped spring or elastic pad.

[0054] This design, see Fig. 9 ,as well as Fig.10 The setting of the screen 35 can effectively screen the crushed material to ensure that only particles that meet the required size can pass through, thereby improving the quality and uniformity of the product. Through the movement of the slider 351 in the slide groove 341, the screen 35 can stably slide on the inside of the discharge plate 34, ensuring its stability during use. The design of the slider 351 and the slide groove 341 makes the installation, disassembly and maintenance of the screen 35 more convenient. When the screen 35 needs to be cleaned or replaced, it can be easily taken out by sliding, reducing maintenance costs and time. The setting of the elastic member 352 can easily drive the screen 35 to move up and down inside the discharge plate 34.

[0055] In one embodiment, the screening unit 6 includes a connecting shaft 61 fixed on the second crushing shaft 524, a transmission wheel 62 movably sleeved on the connecting shaft 61 and eccentrically arranged with the connecting shaft 61, a pushing member arranged on the transmission wheel 62, and a knocking member 65 arranged at the lower end of the pushing member for knocking the screen 35, and the knocking member 65 is located below the screen 35.

[0056] This design, see Figure 8 The second crushing shaft 524 drives the connecting shaft 61 to rotate, so that the connecting shaft 61 drives the upper part of the transmission wheel 62 to rotate eccentrically along the center of the connecting shaft 61, and the lower end of the transmission wheel 62 drives the pushing member to move up and down, so that the knocking member 65 moves up and down at the lower end of the screen 35, knocking the screen 35, which can effectively prevent the screen 35 from being blocked and keep the screen holes unobstructed, thereby improving the screening efficiency.

[0057] In one embodiment, the pushing member includes a connecting block 63 rotatably arranged at the lower end of the transmission wheel 62 and a pushing rod 64 arranged at the lower end of the connecting block 63, a guide plate 66 for guiding the pushing rod 64 is arranged at the position of the corresponding pushing rod 64 of the feeder 3, and a knocking member 65 is arranged at the lower end of the pushing rod 64.

[0058] This design, see Fig. 9 The transmission wheel 62 drives the connecting block 63 to move up and down while making eccentric movement along the center of the connecting shaft 61, so that the connecting block 63 pushes the pushing rod 64 to move up and down. The guide plate 66 plays a precise guiding role for the pushing rod 64, ensuring the stability and accuracy of the pushing rod 64 during the movement, which helps to keep the knocking position of the knocking piece 65 on the screen 35 accurate, thereby improving the screening effect.

[0059] In one embodiment, the knocking member 65 includes a knocking rod 651 rotatably set on the push rod 64, a mounting shaft 652 fixed on the feeder 3, and a knocking block 653 arranged on the side of the knocking rod 651 away from the push rod 64. The knocking rod 651 is penetrated through the feeder 3, the knocking block 653 is located inside the feeder 3 and below the screen 35, and a mounting groove 36 for the knocking rod 651 to rotate is opened at the position of the feeder 3 corresponding to the knocking rod 651.

[0060] This design, see Fig. 9The mounting shaft 652 is fixed on the feeder 3, providing a stable fulcrum for the knocking rod 651, ensuring the accuracy and stability of the knocking action. When the push rod 64 drives the knocking rod 651 to move downward, the knocking rod 651 rotates along the mounting shaft 652 inside the mounting groove 36, so that the other end of the knocking rod 651 drives the knocking block 653 to move upward, and knocks the screen 35, which can effectively shake off the material blocked on the screen 35, restore the permeability of the screen 35, improve the screening efficiency, and reduce the production delay caused by the blockage of the screen 35.

[0061] In addition, if there are descriptions involving "first", "second", etc. in the embodiments, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying the importance of the relative description or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

Claims

1. A reverse expansion rotary kiln for processing low-tin materials, comprising a rotary kiln (1), a fixed frame (2) arranged at the lower end of the rotary kiln (1) for supporting the rotary kiln (1), and a power member (4) arranged on the fixed frame (2) for driving the rotary kiln (1) to rotate, It is characterized in that Also includes: A feeder (3) is arranged at the feeding end of the rotary kiln (1) and is used to feed materials into the interior of the rotary kiln (1); A crushing unit (5), arranged inside the feeder (3) and connected to the rotary kiln (1), for crushing the material inside the feeder (3); The screening unit (6) is arranged inside the feeder (3) and below the pulverizing unit (5), and is used to screen the pulverized material.

2. A reverse expansion rotary kiln for processing low-tin materials according to claim 1, Features: The pulverizing unit (5) comprises a gear ring (51) fixed to the outer end surface of the rotary kiln (1), a transmission member (52) arranged on the feeder (3) and connected to the gear ring (51), and a pulverizing member (54) arranged inside the feeder (3) and connected to the transmission member (52), and the screening unit (6) is connected to the pulverizing member (54).

3. A reverse expansion rotary kiln for processing low-tin materials according to claim 2, Features: The transmission member (52) comprises a first crushing shaft (523) rotatably arranged on the feeder (3), a second crushing shaft (524) rotatably arranged on the feeder (3), a first gear (521) sleeved on the first crushing shaft (523) and meshingly connected to the gear ring (51), and a second gear (522) sleeved on the second crushing shaft (524), wherein the first gear (521) and the second gear (522) are meshingly connected.

4. A reverse expansion rotary kiln for processing low-tin materials according to claim 3, Features: The crushing member (54) comprises a first crushing roller (541) fixed on the second crushing shaft (524), a second crushing roller (542) fixed on the second crushing shaft (524), a first crushing knife (543) fixed on the first crushing roller (541) and a second crushing knife (544) fixed on the second crushing roller (542), wherein the first crushing knife (543) and the second crushing knife (544) are arranged alternately.

5. A reverse expansion rotary kiln for processing low-tin materials according to claim 4, Features: A crushing box (33) is arranged inside the feeder (3) at the positions corresponding to the first crushing knife (543) and the second crushing knife (544), and a feed inlet (31) is opened at the upper end of the feeder (3).

6. A reverse expansion rotary kiln for processing low-tin materials according to claim 5, Features: A blanking plate (34) is fixedly provided at the lower end of the crushing box (33), and a screen (35) is slidably provided inside the blanking plate (34); A slider (351) is arranged on the side of the screen (35) close to the blanking plate (34), and a slide groove (341) for the slider (351) to move is arranged at a position corresponding to the slider (351) on the blanking plate (34), and an elastic member (352) is arranged at a position inside the slide groove (341) at the upper end of the slider (351).

7. A reverse expansion rotary kiln for processing low-tin materials according to claim 6, Features: The screening unit (6) comprises a connecting shaft (61) fixed on the second crushing shaft (524), a transmission wheel (62) movably sleeved on the connecting shaft (61) and eccentrically arranged with respect to the connecting shaft (61), a pushing member arranged on the transmission wheel (62), and a knocking member (65) arranged at the lower end of the pushing member for knocking the screen (35), wherein the knocking member (65) is located below the screen (35).

8. A reverse expansion rotary kiln for processing low-tin materials according to claim 7, Features: The pushing member comprises a connecting block (63) rotatably arranged at the lower end of the transmission wheel (62) and a pushing rod (64) arranged at the lower end of the connecting block (63); a guide plate (66) for guiding the pushing rod (64) is arranged at a position of the feeder (3) corresponding to the pushing rod (64); and the knocking member (65) is arranged at the lower end of the pushing rod (64).

9. A reverse expansion rotary kiln for processing low-tin materials according to claim 8, Features: The knocking member (65) includes a knocking rod (651) rotatably arranged on the pushing rod (64), a mounting shaft (652) fixed on the feeder (3), and a knocking block (653) arranged on the side of the knocking rod (651) away from the pushing rod (64), the knocking rod (651) is passed through the feeder (3), the knocking block (653) is located inside the feeder (3) and below the screen (35), and a mounting groove (36) for the knocking rod (651) to rotate is opened at the position of the feeder (3) corresponding to the knocking rod (651) 10. A reverse expansion rotary kiln for processing low-tin materials according to claim 1, Features: A feed port (13) is provided on one side of the rotary kiln (1) connected to the feeder (3), a discharge port (11) is provided on the other side of the rotary kiln (1), an inner cylinder (12) is provided inside the rotary kiln (1), and a diameter of the inner cylinder (12) gradually decreases from the feed port (13) to the discharge port (11).

Images