Semi-automatic dredger of oxygen generator molecular sieve waste nitrogen outlet blow-off pipe

Abstract

The utility model discloses a semi-automatic dredger for a molecular sieve waste nitrogen outlet blow-off pipe of an oxygen generator, and relates to the technical field of dredging of the blow-off pipe of the oxygen generator. Comprising a fixed rod and a rotating rod, one end of the fixed rod is fixed to the ground below a pipe opening of the blow-off pipe, the rotating rod is rotationally connected to the fixed rod through a first rotating shaft so as to be matched with the fixed rod to form a lever structure, the first rotating shaft is perpendicular to the fixed rod, and a long-end rod is formed by the part between the first end of the rotating rod and the first rotating shaft; a foot rest lever is formed between the second end of the rotating rod and the first rotating shaft, a dredging rod is arranged at the end, away from the first rotating shaft, of the long-end rod, the section size of the dredging rod is smaller than the pipe diameter of the blow-off pipe, and the dredging rod is used for being upwards jacked into the blow-off pipe to dredge the interior of the blow-off pipe when an operator steps on the foot rest lever. The device can effectively prevent water from entering the main heat exchanger, and is simple and easy to dredge the molecular sieve waste nitrogen outlet blow-off pipe and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of dredging of the sewage discharge pipe of an oxygen generator, in particular to a semi-automatic dredger for the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen of an oxygen generator. Background Technique

[0002] When the molecular sieve of the oxygen generator works, it can adsorb the moisture in the air to ensure that dry air enters the air separation cold box system for rectification separation. If moisture enters the main heat exchanger in the oxygen generator, it will block the air passage of the main heat exchanger, and then the oxygen generator has to stop for large-scale heating treatment; after the molecular sieve of the oxygen generator works for one cycle, the bed layer of the molecular sieve of the oxygen generator will adsorb moisture to saturation, and the bed layer of the molecular sieve of the oxygen generator must be heated to desorb the moisture therein for adsorption use in the next cycle; when heating and cold blowing are carried out to desorb the bed layer of the molecular sieve of the oxygen generator, a large amount of liquid water will be discharged from the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen. Since the material of the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen is carbon steel pipe, it is easy to corrode and generate rust when contacting water. Therefore, the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen is very easy to be blocked by rust. If the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen is blocked, a large amount of liquid water cannot be discharged in time. In the next cycle of operation, the moisture will enter the main heat exchanger with the air, seriously threatening the safe and stable operation of the oxygen generator.

[0003] After the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen is blocked, usually the operator needs to take the risk of being bruised and use a wire to dredge the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen. However, because the wire is relatively soft, it is necessary to perform back-and-forth dredging actions many times. Not only is it not easy to dredge and the labor intensity of the operator is increased, but also in the repeated back-and-forth dredging actions, the operator is easily bruised and stabbed by the wire, posing a great threat to the personal safety of the operator. Content of the Utility Model

[0004] The purpose of the utility model is to provide a semi-automatic dredger for the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen of an oxygen generator to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A semi-automatic dredger for the sewage discharge pipe at the outlet of the molecular sieve waste nitrogen of an oxygen generator. The semi-automatic dredger is used for dredging the sewage discharge pipe. The semi-automatic dredger includes a fixed rod and a rotating rod. One end of the fixed rod is fixed on the ground below the pipe orifice of the sewage discharge pipe. The rotating rod is rotationally connected to the fixed rod through a first rotating shaft to cooperate with the fixed rod to form a lever structure. The first rotating shaft is perpendicular to the fixed rod. The part between the first end of the rotating rod and the first rotating shaft forms a long end rod, and the part between the second end of the rotating rod and the first rotating shaft forms a foot pedal rod. A dredging rod is provided at the end of the long end rod away from the first rotating shaft. The cross-sectional dimension of the dredging rod is smaller than the inner diameter of the sewage discharge pipe. The dredging rod is used to be jacked upward into the sewage discharge pipe when an operator steps on the foot pedal rod to dredge the inside of the sewage discharge pipe.

[0006] Based on the above technical features, when using the semi-automatic dredger in the present utility model to clean and dredge the sewage discharge pipe, the operator only needs to step on the foot pedal rod, and use the lever principle to make the dredging rod on the other side rise into the sewage discharge pipe to clean the rust causing blockage. The semi-automatic dredger can effectively dredge and clean the rust in the sewage discharge pipe, thereby avoiding moisture from entering the main heat exchanger in the oxygen generator. At the same time, it also solves the problem that the operator is easily injured when using a wire to dredge the sewage discharge pipe in the background art. Moreover, the semi-automatic dredger in the present utility model not only has a simple structure and is easy to manufacture, but also is simple and easy to operate and convenient to use when dredging the sewage discharge pipe.

[0007] Preferably in this technical solution, the foot pedal rod includes a connecting plate, a kicking plate and a pedal. Among them, one end of the kicking plate is connected to one end of the connecting plate, and the other end of the kicking plate is connected to one end of the pedal; the pedal is parallel to the connecting plate and the long end rod, and the connecting plate, the kicking plate and the pedal cooperate to form a zigzag structure; preferably, the pedal is located on the side of the connecting plate away from the dredging rod.

[0008] Based on the above technical features, the connecting plate, the kicking plate and the pedal in the foot pedal rod cooperate to form a zigzag structure, and at the same time the pedal is located on the side of the connecting plate away from the dredging rod. Such a structural feature of the above foot pedal rod will be more convenient for the operator to step on the foot pedal rod with the foot, so that the dredging rod rises into the sewage discharge pipe to dredge the pipeline.

[0009] Preferably in this technical solution, the foot pedal rod is formed by bending a flat steel, and the kicking plate is perpendicular to the connecting plate and the pedal.

[0010] Based on the above technical features, the foot pedal rod is formed by bending a flat steel, with a simple structure and easy to manufacture. At the same time, the flat steel can use the leftover materials at the corners of the oxygen plant, and the materials are easily available.

[0011] Preferably, in this technical solution, the first rotating shaft is a pin shaft, and the rotating rod is rotatably connected to the fixed rod through the pin shaft.

[0012] Based on the above technical features, using a pin shaft for the first rotating shaft makes the rotation of the rotating rod around the pin shaft more reliable. At the same time, the rotating rod and the fixed rod are more convenient for disassembly and connection.

[0013] Preferably, in this technical solution, the gravitational moment from the end of the long end rod away from the first rotating shaft to the first rotating shaft is greater than the gravitational moment from the end of the foot pedal rod away from the first rotating shaft to the first rotating shaft.

[0014] Based on the above technical features, it can be ensured that when the operator does not step on the foot pedal rod of the semi-automatic dredger, the dredging rod will naturally be pulled out of the sewage pipe and fall below the sewage pipe, thereby ensuring that the liquid water generated by the oxygen generator can be discharged in time when the operator dredges the sewage pipe.

[0015] Preferably, in this technical solution, a return spring is connected between the long end rod and the fixed rod, and when the return spring resets, it is used to pull the dredging rod out of the sewage pipe.

[0016] Based on the above technical features, it can be ensured that when the operator does not step on the foot pedal rod of the semi-automatic dredger, the dredging rod is pulled out of the sewage pipe and falls below the sewage pipe, thereby ensuring that the liquid water generated by the oxygen generator can be discharged in time when the operator dredges the sewage pipe. At the same time, setting a return spring between the long end rod and the fixed rod can effectively improve the dredging efficiency of the semi-automatic dredger for the sewage pipe.

[0017] Preferably, in this technical solution, it further includes a fixed connecting plate. One end of the fixed rod is fixedly connected to the fixed connecting plate. A plurality of screw holes are provided on the fixed connecting plate, and the fixed rod is fixedly connected to the ground below the pipe orifice of the sewage pipe through a plurality of bolts adapted to the screw holes.

[0018] Based on the above technical features, the semi-automatic dredger is fixedly connected to the ground by bolts, which is more convenient for the disassembly and installation of the semi-automatic dredger.

[0019] Preferably, in this technical solution, the semi-automatic dredger further includes a spring. The spring is sleeved on the dredging rod, and the spring is fixedly connected to the end of the long end rod away from the first rotating shaft.

[0020] Based on the above technical features, a spring is provided on the semi-automatic dredger. When the semi-automatic dredger performs dredging operations on the sewage pipe, the provided spring can effectively discharge the rust generated in the sewage pipe. Description of the Drawings

[0021] Figure 1Schematic diagram of the structure of a semi-automatic dredger for the sewage discharge pipe at the waste nitrogen outlet of the molecular sieve of an oxygen generator in an embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of the structure of another semi-automatic dredger for the sewage discharge pipe at the waste nitrogen outlet of the molecular sieve of an oxygen generator in an embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the structure of a semi-automatic dredger for the sewage discharge pipe at the waste nitrogen outlet of the molecular sieve of an oxygen generator with a return spring in an embodiment of the present utility model.

[0024] In the figure: 1. Fixed rod; 2. Rotating rod; 21. Long end rod; 22. Pedal rod; 22A. Connecting plate; 22B. Kicking plate; 22C. Pedal; 3. First rotating shaft; 4. Dredging rod; 5. Return spring; 6. Fixed connecting plate; 61. Screw hole; 7. Spring. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0026] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the accompanying drawings are not drawn according to the actual proportional relationship.

[0028] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of the subsequent drawings.

[0029] As Figures 1 to 3 shown, the present utility model provides a technical solution: a semi-automatic dredger for the sewage discharge pipe at the waste nitrogen outlet of the molecular sieve of an oxygen generator. The semi-automatic dredger is used for dredging the sewage discharge pipe. The semi-automatic dredger includes a fixed rod 1 and a rotating rod 2.

[0030] Specifically, as Figures 1 to 3 shown, one end of the fixed rod 1 is fixed to the ground below the pipe orifice of the sewage pipe; preferably, in this embodiment, the semi-automatic dredger further includes a fixed connecting plate 6, one end of the fixed rod 1 is fixedly connected to the fixed connecting plate 6, and a plurality of screw holes 61 are provided on the fixed connecting plate 6, and the fixed connecting plate 6 fixedly connects the fixed rod 1 to the ground below the pipe orifice of the sewage pipe through a plurality of bolts adapted to the screw holes 61. The semi-automatic dredger is fixedly connected to the ground by bolts, which can facilitate the disassembly and installation of the semi-automatic dredger more conveniently; further, preferably in the embodiment of the present invention, the fixed rod 1 is made of flat steel with a length of 30 cm, and one end of the fixed rod 1 is welded to the middle of the fixed connecting plate 6. At the same time, two screw holes 61 are provided on the fixed connecting plate 6, and the fixed connecting plate 6 fixedly connects the fixed rod 1 to the ground below the pipe orifice of the sewage pipe through two bolts adapted to the screw holes 61.

[0031] More specifically, as Figures 1 to 3 shown, the rotating rod 2 is rotatably connected to the fixed rod 1 through the first rotating shaft 3 to form a lever structure in cooperation with the fixed rod 1. The first rotating shaft 3 is perpendicular to the fixed rod 1. The part between the first end of the rotating rod 2 and the first rotating shaft 3 forms a long end rod 21, and the part between the second end of the rotating rod 2 and the first rotating shaft 3 forms a foot pedal rod 22. A dredging rod 4 is provided at the end of the long end rod 21 away from the first rotating shaft 3. The cross-sectional dimension of the dredging rod 4 is smaller than the inner diameter of the sewage pipe. The dredging rod 4 is used to be jacked into the sewage pipe upward when an operator steps on the foot pedal rod 22 to dredge the inside of the sewage pipe; preferably, in this embodiment, the dredging rod 4 is hinged to the end of the long end rod 21 away from the first rotating shaft 3. At the same time, the first rotating shaft 3 is a pin shaft, and the rotating rod 2 is rotatably connected to the fixed rod 1 through the pin shaft.

[0032] Further, as Figure 1 and Figure 2 shown, the foot pedal rod 22 includes a connecting plate 22A, a kicking plate 22B and a pedal 22C. Among them, one end of the kicking plate 22B is connected to one end of the connecting plate 22A, and the other end of the kicking plate 22B is connected to one end of the pedal 22C; the pedal 22C is parallel to the connecting plate 22A and the long end rod 21. The connecting plate 22A, the kicking plate 22B and the pedal 22C cooperate to form a zigzag structure. At the same time, the pedal 22C is located on the side of the connecting plate 22A away from the dredging rod 4. The foot pedal rod 22 is formed by bending flat steel. The kicking plate 22B is perpendicular to the connecting plate 22A and the pedal 22C. Specifically, Figure 1 the foot pedal rod 22 is formed by bending flat steel downward, Figure 2 the foot pedal rod 22 is formed by bending flat steel upward. More specifically, Figure 1 the semi-automatic dredger solution shown is more convenient for the operator to step on the foot pedal rod 22 with the foot, Figure 2The semi-automatic dredger solution shown can push the foot pedal rod 22 downward by hand or foot according to the length of the kick plate 22B or the leg shape requirements of the operator; further, in the embodiment of the present invention, the total length of the rotating rod 2 is 70 cm, where: the length of the long end rod 21 is 35 cm, the total length of the foot pedal rod 22 is 35 cm, the length of the connecting plate 22A is 10 cm, the length of the kick plate 22B is 10 cm, and the length of the pedal 22C is 15 cm.

[0033] As Figure 1 and Figure 2 shown, in order to prevent the dredging rod 4 from being pulled out of the sewage pipe and automatically falling below the sewage pipe when the operator does not step on or push down the foot pedal rod 22 of the semi-automatic dredger, the gravitational moment from the end of the long end rod 21 far from the first rotating shaft 3 to the first rotating shaft 3 is greater than the gravitational moment from the end of the foot pedal rod 22 far from the first rotating shaft 3 to the first rotating shaft 3.

[0034] As Figure 3 shown, a return spring 5 is also connected between the long end rod 21 and the fixed rod 1. When the return spring 5 is reset, the dredging rod 4 can be quickly pulled out of the sewage pipe. Compared with Figure 1 and Figure 2 the technical solutions of the semi-automatic dredgers in Figure 3 the dredging rod 4 in the semi-automatic dredger in Figure 3 will be pulled out of the sewage pipe and fall below the sewage pipe faster, thereby more effectively improving the dredging efficiency of the semi-automatic dredger for the sewage pipe; at the same time, as

[0035] As Figures 1 to 3 shown, the semi-automatic dredger further includes a spring 7. The spring 7 is sleeved on the dredging rod 4 and is fixedly connected to the end of the long end rod 21 far from the first rotating shaft 3. The provided spring 7 can effectively discharge the rust generated in the sewage pipe; preferably, in the embodiment of the present invention, the dredging rod 4 is a steel rod with a cross-sectional dimension of 10 mm and a height of 50 cm, the inner diameter of the sewage pipe is 15 mm, and the cross-sectional dimension of the spring 7 is 12 mm.

[0036] When using the semi-automatic dredger in the present invention to clean and dredge the sewage pipe, the operator only needs to step on the foot pedal rod 22 and use the lever principle to make the dredging rod 4 on the other side rise into the sewage pipe to clean the rust causing the blockage. The semi-automatic dredger can effectively dredge and clean the rust in the sewage pipe, thereby avoiding water from entering the main heat exchanger in the oxygen generator. At the same time, it also solves the problem that the operator is easily injured when using a wire to dredge the sewage pipe in the background technology. Moreover, the semi-automatic dredger in the present invention not only has a simple structure and is easy to manufacture, but also is simple and easy to operate and convenient to use when dredging the sewage pipe.

[0037] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic dredging device for the outlet sewage pipe of the molecular sieve nitrogen of an oxygen generator, the semi-automatic dredging device is used for dredging the sewage pipe, characterized in that: The semi-automatic dredging device comprises: A fixing rod (1), one end of which is fixed on the ground below the outlet of the sewage pipe; A rotating rod (2), the rotating rod (2) is rotatably connected to the fixed rod (1) via a first rotating shaft (3) to cooperate with the fixed rod (1) to form a lever structure, the first rotating shaft (3) is perpendicular to the fixed rod (1), the portion between the first end of the rotating rod (2) and the first rotating shaft (3) forms a long end rod (21), and the portion between the second end of the rotating rod (2) and the first rotating shaft (3) forms a pedal rod (22); wherein: A dredging rod (4) is provided at the end of the long end rod (21) away from the first rotating shaft (3). Specifically, the dredging rod (4) is hinged at the end of the long end rod (21) away from the first rotating shaft (3). The cross-sectional size of the dredging rod (4) is smaller than the diameter of the sewage pipe. The dredging rod (4) is used to push upward into the sewage pipe to dredge the inside of the sewage pipe when an operator steps on the pedal rod (22).

2. The semi-automatic dredging device according to claim 1, characterized in that: The pedal rod (22) comprises a connecting plate (22A), a kick plate (22B) and a pedal (22C), wherein one end of the kick plate (22B) is connected to one end of the connecting plate (22A), and the other end of the kick plate (22B) is connected to one end of the pedal (22C); the pedal (22C), the connecting plate (22A) and the long end rod (21) are parallel to each other, and the connecting plate (22A), the kick plate (22B) and the pedal (22C) cooperate to form a zigzag structure.

3. The semi-automatic dredging device according to claim 2, characterized in that: The pedal (22C) is located on a side of the connecting plate (22A) away from the dredging rod (4).

4. The semi-automatic dredging device according to claim 2, characterized in that: The pedal rod (22) is formed by bending a flat steel bar, and the kick plate (22B) is perpendicular to the connecting plate (22A) and the pedal (22C).

5. The semi-automatic dredging device according to claim 1, characterized in that: The first rotating shaft (3) is a pin shaft, and the rotating rod (2) is rotatably connected to the fixed rod (1) via the pin shaft.

6. The semi-automatic dredging device according to claim 1, characterized in that: The gravity moment from the end of the long end rod (21) away from the first rotating shaft (3) to the first rotating shaft (3) is greater than the gravity moment from the end of the pedal rod (22) away from the first rotating shaft (3) to the first rotating shaft (3).

7. The semi-automatic dredging device according to claim 1, characterized in that: A reset spring (5) is connected between the long end rod (21) and the fixed rod (1), and is used to pull the dredging rod (4) out of the sewage pipe when the reset spring (5) is reset.

8. The semi-automatic dredging device according to claim 1, characterized in that: It also comprises a fixed connecting plate (6), one end of the fixed rod (1) is fixedly connected to the fixed connecting plate (6), a plurality of screw holes (61) are provided on the fixed connecting plate (6), and the fixed connecting plate (6) fixes the fixed rod (1) to the ground below the pipe mouth of the sewage pipe by means of a plurality of bolts matched with the screw holes (61).

9. The semi-automatic dredging device according to claim 1, characterized in that: The semi-automatic dredging device further comprises a spring (7), wherein the spring (7) is sleeved on the dredging rod (4), and the spring (7) is fixedly connected to the end of the long end rod (21) away from the first rotating shaft (3).

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