CN113623854B

CN113623854B - Fan section drainage device and drainage method thereof

Info

Publication number: CN113623854B
Application number: CN202110830361.9A
Authority: CN
Inventors: 蔡传鑫; 徐新; 蔡玮泽; 徐星星; 陈志坚; 李龙; 何春敏
Original assignee: Xichengshi Jiangsu Air Conditioning And Refrigeration Equipment Co ltd
Current assignee: Xichengshi Jiangsu Air Conditioning And Refrigeration Equipment Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-06-10
Anticipated expiration: 2041-07-22
Also published as: CN113623854A

Abstract

The invention relates to the technical field of air treatment, in particular to a fan section drainage device which comprises a water collecting hopper and a water outlet pipe arranged at the lower end of the water collecting hopper, the lower end of the water outlet pipe is connected with a connecting pipe which is horizontally arranged through an elbow, one end of the connecting pipe far away from the elbow is connected with a hose, the other end of the hose is connected with a drainage elbow, a sponge block is arranged in the middle of the hose, one side of the hose is provided with a vertically arranged bearing plate, one end of the connecting pipe far away from the elbow and the horizontal part of the drainage bent pipe are fixedly connected with the bearing plate, the edge of the upper part of one surface of the bearing plate facing the hose is fixedly connected with an L-shaped plate, the vertical part of the L-shaped plate is provided with an extrusion piece for extruding the hose, compared with the prior art, the invention has the following beneficial effects that: the dust filtered by the sponge block can be conveniently discharged.

Description

Fan section drainage device and drainage method thereof

Technical Field

The invention discloses a fan section drainage device and a drainage method thereof, and belongs to the technical field of air treatment.

Background

If there is ponding in air handling unit fan section, can't arrange to the fan motor soaks in aqueous for a long time, not only influences the safety in utilization, probably produces the power consumption safety moreover, consequently needs to lead to arranging to the ponding influence of fan section, with prevent that the fan is soaked by the water.

Chinese patent publication No. CN107894086B discloses a condensed water drainage device for a solar air conditioner, which describes: the water inlet pipe comprises a first section of pipe body and a second section of pipe body; set up filtering component between first section body and the second section body, its weak point that exists is: the filterable debris of by filtering component can gather in first section body, and need the manual work to frequently dismantle the clearance, waste time and energy, and the management is inconvenient.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a fan section drainage device and a drainage method thereof so as to solve the problems in the background art.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a fan section drainage device, includes the water catch bowl and installs the outlet pipe at the water catch bowl lower extreme, the outlet pipe lower extreme is connected with the connecting pipe that the level was arranged through the elbow, the one end that the elbow was kept away from to the connecting pipe is connected with the hose, the hose other end is connected with the drainage return bend, the middle part position installs the sponge piece in the hose, hose one side is equipped with vertical layout's loading board, the one end that the elbow was kept away from to the connecting pipe and the horizontal part of drainage return bend all with loading board fixed connection, the loading board is towards the one side upper portion edge fixedly connected with L template of hose, the extruded article that is used for the extrusion hose is installed to the vertical portion of L template, install suction spare between connecting pipe and the drainage return bend.

Specifically, the extruded article includes the clamp plate, the clamp plate sets up the one side that deviates from the loading board at the hose, the movable rod that two levels were arranged is installed to the one side symmetry that the clamp plate deviates from the hose to the clamp plate, the one end that the clamp plate was kept away from to the movable rod extends to the drum and installs the magnet piece in, the cylinder is the vertical portion fixed connection of level form and L template, the cylinder is close to the one end of clamp plate and installs the cover, the drum cap is installed to the one side of keeping away from the clamp plate in the drum, the cover is equipped with the spring on the movable rod, the spring sets up between cover and magnet piece.

Specifically, the inner surface of the cylinder cap is provided with an internal thread, and the outer surface of one end of the cylinder body close to the pressure plate is provided with an external thread matched with the internal thread.

Specifically, the movable rod is kept away from one end fixedly connected with of clamp plate and carries the dish, the magnet piece pastes mutually with carrying the dish through glue.

Specifically, clamp plate end fixedly connected with connecting block, the connecting block runs through the bar groove, the bar groove is seted up and is arranged along the length direction of movable rod at the horizontal part upper surface of L template and bar groove, connecting block upper end fixedly connected with is in the limiting plate of bar groove upside, two eyeball-shaped balls are installed to limiting plate lower surface symmetry, the ball position and the L template rolling contact of eyeball-shaped ball.

Specifically, two horizontally arranged mounting openings are symmetrically formed in the vertical portion of the L-shaped plate, and the cylinder is fixed in the mounting openings.

Specifically, the extruded article includes rubber bag, rubber bag sets up between loading board and extruded article, rubber bag one end is connected with first check valve through first branch pipe, first check valve switches on to rubber bag direction, the one end that first branch pipe was kept away from to first check valve is connected with the suction tube, the one end that first check valve was kept away from to the suction tube extends to the interior bottom of collecting vessel and has seted up a plurality of suction hole, the collecting vessel is fixed under the through-hole, the through-hole is seted up at connecting pipe surface lower part position, the one end that first branch pipe was kept away from to rubber bag is installed the second branch pipe, the one end that rubber bag was kept away from to the second branch pipe is connected with the second check valve that deviates from the rubber bag direction and switches on, the second check valve other end links to each other with the drainage return bend through the raceway.

Specifically, the outer fixed surface in water collecting bucket upper end is connected with the circle limit, a plurality of mounting hole that is used for alternate bolt is seted up for annular equidistance to circle limit upper surface.

A drainage method of a fan section drainage device is characterized in that a circuit of an electromagnet is switched on, a pressing plate and a bearing plate jointly extrude a hose and a rubber balloon under the action of electromagnetic repulsion force, then the circuit of the electromagnet is switched off, and the actions are repeated.

The invention has the beneficial effects that:

1. install the sponge piece in the hose, on the one hand do not influence moisture and flow to the drainage return bend from the sponge piece in, on the other hand when there is great pressure differential in hose both sides, prevent that the air flows to the collecting hopper with faster speed from the drainage return bend, realize the purpose that the water diversion backward flow splashes.

2. After the circuit of the electromagnet is switched on, the electromagnet generates magnetism repulsive to the magnet block, the magnet block drives the pressing plate to move towards the hose direction through the movable rod under the action of electromagnetic repulsion force, the pressing plate and the bearing plate jointly act to extrude the hose, and the sponge block in the hose is extruded by moisture in the sponge block after being extruded, so that the purpose of discharging the moisture in the sponge block is achieved, and the sponge block is prevented from adsorbing the moisture for a long time under the condition of not using.

3. The position of the cylinder cap on the cylinder body is adjusted, and then the distance between the cylinder cap and the electromagnet is increased or decreased, namely the moving range of the magnet block is increased or decreased, so that springs with different lengths can be conveniently installed between the magnet block and the cylinder cap.

4. In-process at clamp plate and loading board extrusion hose, the part dust that is filtered by the sponge piece is shunted to the collecting vessel along with water, extrude the rubber sacculus with the loading board extrusion hose in the clamp plate, when the rubber sacculus is extruded, first check valve is closed under the effect of pressure differential, the second check valve is opened, and then the air in the rubber sacculus is arranged to the drainage elbow in, when clamp plate and loading board no longer extrude the rubber sacculus, rubber sacculus reconversion, first check valve is opened this moment, the second check valve is closed, thereby the moisture that has the dust in the mixing of collecting vessel flows into the rubber sacculus through suction tube and first branch, when extrudeing the rubber sacculus once more, the moisture that has the dust in the rubber sacculus alright arrange to the drainage elbow, realize convenient discharge by the dust that the sponge piece filtered, need not artifical frequent dismantlement clearance, reduce the management degree of difficulty.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a fan section drainage device of the present invention;

FIG. 2 is an enlarged view of the position A of a fan segment drainage device according to the present invention;

FIG. 3 is a schematic view of the assembly of a sponge block and a hose in a fan section drainage device of the present invention;

FIG. 4 is a schematic view of the assembly of the spring, movable rod and cylinder of the fan section drain of the present invention;

FIG. 5 is a schematic view of the assembly of the suction tube, the collection canister and the connection tube of the fan section drainage device of the present invention;

FIG. 6 is a perspective view of an L-shaped plate in a fan segment drain of the present invention;

FIG. 7 is an assembly schematic diagram of a bull's eye bead, a connecting block and a limiting plate in the fan section drainage device of the present invention;

in the figure: 1. the water collecting device comprises a water collecting hopper, 2, a water outlet pipe, 3, an elbow, 4, a connecting pipe, 5, a collecting barrel, 6, a hose, 7, a pressing plate, 8, a movable rod, 9, a cylinder, 10, a drainage bent pipe, 11, a suction pipe, 12, a first one-way valve, 13, a first branch pipe, 14, a rubber balloon, 15, a bearing plate, 16, an L-shaped plate, 17, a second branch pipe, 18, a second one-way valve, 19, a water conveying pipe, 20, a ring edge, 21, a mounting hole, 22, a strip-shaped groove, 23, a limiting plate, 24, a connecting block, 25, a sponge block, 26, a barrel cap, 27, a spring, 28, a carrying disc, 29, a magnet block, 30, an electromagnet, 31, a through hole, 32, a suction hole, 33, a mounting hole, 34 and a eyeball.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a fan section drainage device, include water catch bowl 1 and install outlet pipe 2 at 1 lower extreme of water catch bowl, 2 lower extremes of outlet pipe are connected with the connecting pipe 4 that the level was arranged through elbow 3, the one end that elbow 3 was kept away from to connecting pipe 4 is connected with hose 6, the hose 6 other end is connected with drainage return bend 10, hose 6 plays the effect of connecting drainage return bend 10 and connecting pipe 4, be convenient for simultaneously clamp plate 7 and loading board 15 combined action extrude the sponge piece 25 that plays the filtering action in the hose 6, hose 6 can resume the original state by oneself after receiving the extrusion.

The middle part position installs the sponge piece 25 in the hose 6, does not influence moisture on the one hand and flows to the drainage return bend 10 from the sponge piece 25 in, and on the other hand when there is great pressure differential in hose 6 both sides, prevents that the air from flowing to the collecting hopper 1 with faster speed from drainage return bend 10, realizes the purpose that the water diversion backward flow splashes.

Hose 6 one side is equipped with vertical layout's loading board 15, and the one end that elbow 3 was kept away from to connecting pipe 4 and the horizontal part of drainage return bend 10 all with loading board 15 fixed connection, loading board 15 towards hose 6 one side upper portion edge fixedly connected with L template 16, and loading board 15 plays the effect of connecting drainage return bend 10 and connecting pipe 4 on the one hand, improves the stability of structure, and on the other hand provides the support carrier for L template 16.

Two mounting openings 33 which are horizontally arranged are symmetrically formed in the vertical part of the L-shaped plate 16, a cylinder 9 is fixed in each mounting opening 33, a pressing plate 7 used for extruding the hose 6 is arranged between the hose 6 and the L-shaped plate 16, two movable rods 8 which are horizontally arranged are symmetrically mounted on one surface, deviating from the hose 6, of the pressing plate 7, one end, far away from the pressing plate 7, of each movable rod 8 extends into the cylinder 9 and is provided with a magnet block 29, the cylinder 9 is horizontally and fixedly connected with the vertical part of the L-shaped plate 16, a cylinder cap 26 is mounted at one end, close to the pressing plate 7, of the cylinder 9, one side, far away from the pressing plate 7, of the cylinder 9 is provided with an electromagnet 30 which can repel the magnet block 29 and can adjust the position through screws, the distance between the electromagnet 30 and the magnet block 29 in the initial state is adjusted by adjusting the position of the electromagnet 30 in the cylinder 9, and the degree of extrusion of the pressing plate 7 to the hose 6 and the rubber ball bag 14 is conveniently adjusted, the movable rod 8 is sleeved with a spring 27, the spring 27 is arranged between the barrel cap 26 and the magnet block 29, after a circuit of the electromagnet 30 is switched on, the electromagnet 30 generates magnetism repulsive to the magnet block 29, under the action of electromagnetic repulsion force, the magnet block 29 drives the pressing plate 7 to move towards the hose 6 through the movable rod 8, the pressing plate 7 and the bearing plate 15 jointly act to extrude the hose 6, at the moment, moisture in the sponge block 25 in the hose 6 is extruded, the purpose of discharging moisture in the sponge block 25 is achieved, under the condition of not using, moisture is prevented from being adsorbed by the sponge block 25 for a long time, in the power-on process of the electromagnet 30, the magnet block 29 moves towards the direction far away from the electromagnet 30 and extrudes the spring 27, the spring 27 generates elastic deformation, and after the electromagnet 30 is powered off, under the action of resilience force of the spring 27, the pressing plate 7 can conveniently recover to the original position.

A rubber ball bag 14 is arranged between the connecting pipe 4 and the drainage elbow 10, the rubber ball bag 14 is arranged between the bearing plate 15 and the pressing plate 7, one end of the rubber ball bag 14 is connected with a first one-way valve 12 through a first branch pipe 13, the first one-way valve 12 is communicated towards the direction of the rubber ball bag 14, one end of the first one-way valve 12 far away from the first branch pipe 13 is connected with a suction pipe 11, one end of the suction pipe 11 far away from the first one-way valve 12 extends to the bottom in the collecting cylinder 5 and is provided with a plurality of suction holes 32, the collecting cylinder 5 is fixed under a through hole 31, the through hole 31 is arranged at the lower part of the outer surface of the connecting pipe 4, one end of the rubber ball bag 14 far away from the first branch pipe 13 is provided with a second branch pipe 17, one end of the second branch pipe 17 far away from the rubber ball bag 14 is connected with a second one-way valve 18 communicated away from the direction of the rubber ball bag 14, the other end of the second one-way valve 18 is communicated with the drainage elbow 10 through a water pipe 19, in the process that the pressing plate 7 and the bearing plate 15 squeeze the hose 6, part of dust filtered by the sponge block 25 is shunted into the collecting cylinder 5 along with water, the pressing plate 7 and the bearing plate 15 squeeze the rubber balloon 14 while squeezing the hose 6, when the rubber balloon 14 is squeezed, the first one-way valve 12 is closed under the action of pressure difference, the second one-way valve 18 is opened, then air in the rubber balloon 14 is discharged into the drainage elbow 10, when the pressing plate 7 and the bearing plate 15 do not squeeze the rubber balloon 14 any more, the rubber balloon 14 is restored to the original state, at the moment, the first one-way valve 12 is opened, the second one-way valve 18 is closed, so that moisture mixed with dust in the collecting cylinder 5 flows into the rubber balloon 14 through the suction pipe 11 and the first branch pipe 13, when the rubber balloon 14 is squeezed again, moisture mixed with dust in the rubber balloon 14 can be discharged into the drainage elbow 10, the actions are repeated, and dust filtered by the sponge block 25 can be conveniently discharged, the manual frequent disassembly and cleaning are not needed, and the management difficulty is reduced.

As an embodiment of the present invention: internal thread has been processed to barrel cap 26 internal surface, the cylinder 9 is close to the one end surface processing of clamp plate 7 has the external screw thread with internal thread matched with, the threaded connection of barrel cap 26 and cylinder 9 is convenient for in the design of internal thread and external screw thread, the dismouting of barrel cap 26 and cylinder 9 of being convenient for on the one hand, on the other hand is through the position of adjustment barrel cap 26 on cylinder 9, and then the interval grow or diminish between barrel cap 26 and electro-magnet 30, magnet piece 29's home range enlarges or reduces promptly, be convenient for install the spring 27 of different length between magnet piece 29 and barrel cap 26.

As an embodiment of the present invention: one end of the movable rod 8, which is far away from the pressing plate 7, is fixedly connected with a carrying disc 28, a magnet block 29 is adhered to the carrying disc 28 through glue, the carrying disc 28 is mounted on the movable rod 8, a mounting carrier is provided for the magnet block 29, and the mounting stability of the movable rod 8 and the magnet block 29 is improved.

As an embodiment of the present invention: the pressing plate 7 is fixedly connected with a connecting block 24, the connecting block 24 penetrates through a strip-shaped groove 22, the strip-shaped groove 22 is formed in the upper surface of the horizontal part of the L-shaped plate 16, the strip-shaped groove 22 is arranged along the length direction of the movable rod 8, the upper end of the connecting block 24 is fixedly connected with a limiting plate 23 positioned on the upper side of the strip-shaped groove 22, two eyeball beads 34 are symmetrically arranged on the lower surface of the limiting plate 23, the ball parts of the eyeball beads 34 are in rolling contact with the L-shaped plate 16, the pressing plate 7 drives the connecting block 24 to slide in the strip-shaped groove 22 in the moving process, meanwhile, the limiting plate 24 drives the limiting plate 23 to slide on the surface of the L-shaped plate 16, the limiting plate 23, the connecting block 24 and the L-shaped plate 16 jointly start the effect of supporting the pressing plate 7, the weight of the pressing plate 7 completely acts on the movable rod 8, the requirement on the strength of the movable rod 8 is favorably reduced, the probability of deformation and bending of the movable rod 8 is reduced, the limiting plate 23 drives the ball parts in the eyeball beads 34 to roll on the surface of the L-shaped plate 16 in the moving process, the frictional resistance between the stopper plate 23 and the L-shaped plate 16 is reduced.

As an embodiment of the present invention: the outer surface of the upper end of the water collecting hopper 1 is fixedly connected with a ring edge 20, a plurality of mounting holes 21 for inserting bolts are formed in the upper surface of the ring edge 20 in an annular and equidistant mode, and the ring edge 20 is mounted at a proper position of the fan section through the mounting holes 21 to complete connection of the water collecting hopper 1 and the fan section.

A drainage method of a fan section drainage device is characterized in that a circuit of an electromagnet 30 is switched on, a pressing plate 7 and a bearing plate 15 jointly squeeze a hose 6 and a rubber ball bag 14 under the action of electromagnetic repulsion force, then the circuit of the electromagnet 30 is switched off, and the actions are repeated.

The specific implementation mode is as follows: after the circuit of the electromagnet 30 is switched on, the electromagnet 30 generates magnetism repulsive to the magnet block 29, under the action of electromagnetic repulsion, the magnet block 29 drives the pressing plate 7 to move towards the hose 6 through the movable rod 8, and then the pressing plate 7 and the bearing plate 15 jointly act to extrude the hose 6, at the moment, the sponge block 25 in the hose 6 is extruded by the water in the sponge block 25 after being extruded, the purpose of discharging the water in the sponge block 25 is achieved, and under the condition of nonuse, the sponge block 25 is prevented from adsorbing the water for a long time.

In the process that the pressing plate 7 and the bearing plate 15 squeeze the hose 6, part of dust filtered by the sponge block 25 is shunted into the collecting cylinder 5 along with water, the pressing plate 7 and the bearing plate 15 squeeze the hose 6 and squeeze the rubber balloon 14 at the same time, when the rubber balloon 14 is squeezed, the first one-way valve 12 is closed under the action of pressure difference, the second one-way valve 18 is opened, then air in the rubber balloon 14 is discharged into the drainage elbow 10, when the pressing plate 7 and the bearing plate 15 do not squeeze the rubber balloon 14 any more, the rubber balloon 14 is restored to the original state, at the moment, the first one-way valve 12 is opened, the second one-way valve 18 is closed, so that moisture mixed with dust in the collecting cylinder 5 flows into the rubber balloon 14 through the suction pipe 11 and the first branch pipe 13, when the rubber balloon 14 is squeezed again, the moisture mixed with dust in the rubber balloon 14 can be discharged into the drainage elbow 10, and the dust filtered by the sponge block 25 can be conveniently discharged, the manual frequent disassembly and cleaning are not needed, and the management difficulty is reduced.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a fan section drainage device, includes water collecting bucket (1) and installs outlet pipe (2) at water collecting bucket (1) lower extreme, its characterized in that: the water outlet pipe (2) lower extreme is connected with connecting pipe (4) that the level was arranged through elbow (3), the one end that elbow (3) were kept away from in connecting pipe (4) is connected with hose (6), the hose (6) other end is connected with drainage return bend (10), middle part position installs sponge piece (25) in hose (6), hose (6) one side is equipped with vertical layout's loading board (15), the one end that elbow (3) were kept away from in connecting pipe (4) and the horizontal part of drainage return bend (10) all with loading board (15) fixed connection, one side upper portion edge fixedly connected with L template (16) of loading board (15) towards hose (6), the extrusion spare that is used for extruding hose (6) is installed to the vertical portion of L template (16), install the suction spare between connecting pipe (4) and drainage return bend (10), the extruded part comprises a pressing plate (7), the pressing plate (7) is arranged on one side of the hose (6) deviating from the bearing plate (15), a movable rod (8) which is arranged horizontally is symmetrically arranged on one side of the hose (6) deviating from the pressing plate (7), the movable rod (8) is arranged at one end of the pressing plate (7) in a extending mode into a cylinder (9) and is provided with a magnet block (29), the cylinder (9) is fixedly connected with the vertical part of the horizontal shape and an L-shaped plate (16), a cylinder cap (26) is arranged at one end of the cylinder (9) close to the pressing plate (7), one side of the cylinder (9) far away from the pressing plate (7) is provided with an electromagnet (30) which can repel from the magnet block (29), a spring (27) is sleeved on the movable rod (8), the spring (27) is arranged between the cylinder cap (26) and the magnet block (29), and the suction piece comprises a rubber ball bag (14), the rubber sacculus (14) sets up between loading board (15) and extruded article, rubber sacculus (14) one end is connected with first check valve (12) through first branch pipe (13), first check valve (12) switch on to rubber sacculus (14) direction, the one end that first branch pipe (13) were kept away from in first check valve (12) is connected with suction tube (11), the one end that first check valve (12) were kept away from in suction tube (11) extends to the interior bottom of collection tube (5) and has seted up a plurality of suction hole (32), collection tube (5) are fixed under through-hole (31), through-hole (31) are seted up in connecting pipe (4) surface lower part position, the one end that first branch pipe (13) were kept away from in rubber sacculus (14) of rubber sacculus (14) is installed second branch pipe (17), the one end that rubber sacculus (14) were kept away from in second branch pipe (17) is connected with second check valve (18) that the direction of deviating from to switch on, the other end of the second one-way valve (18) is communicated with the drainage bent pipe (10) through a water delivery pipe (19).

2. The fan segment drain device of claim 1, wherein: the inner surface of the cylinder cap (26) is provided with internal threads, and the outer surface of one end of the cylinder body (9) close to the pressure plate (7) is provided with external threads matched with the internal threads.

3. A fan segment drain as claimed in claim 1, wherein: one end of the movable rod (8) far away from the pressing plate (7) is fixedly connected with a carrying disc (28), and the magnet block (29) is adhered to the carrying disc (28) through glue.

4. A fan segment drain as claimed in claim 1, wherein: clamp plate (7) end fixedly connected with connecting block (24), connecting block (24) run through bar groove (22), bar groove (22) are seted up at the horizontal part upper surface of L template (16) and bar groove (22) and are arranged along the length direction of movable rod (8), connecting block (24) upper end fixedly connected with is in limiting plate (23) of bar groove (22) upside, two eyeball (34) are installed to limiting plate (23) lower surface symmetry, the ball position and the L template (16) rolling contact of eyeball (34).

5. A fan segment drain as claimed in claim 1, wherein: two horizontally-arranged mounting openings (33) are symmetrically formed in the vertical portion of the L-shaped plate (16), and the cylinder (9) is fixed in the mounting openings (33).

6. A fan segment drain as claimed in claim 1, wherein: the outer fixed surface of the upper end of the water collecting hopper (1) is connected with a ring edge (20), and the upper surface of the ring edge (20) is provided with a plurality of mounting holes (21) which are used for inserting bolts at equal intervals in an annular shape.

7. A drainage method of a fan section drainage device, which is characterized by comprising the fan section drainage device as claimed in any one of claims 1 to 6, wherein a circuit of an electromagnet (30) is switched on, a pressing plate (7) and a bearing plate (15) jointly squeeze a hose (6) and a rubber ball bag (14) under the action of electromagnetic repulsion, then the circuit of the electromagnet (30) is switched off, and the actions are repeated.