A drip irrigation device for landscaping

Abstract

The application discloses a drip irrigation device for landscaping, which comprises a heating backflow mechanism and a positioning communication joint mechanism, and the heating backflow mechanism comprises a water storage tank, and relates to the technical field of garden drip irrigation. The drip irrigation device for landscaping is combined with the heating backflow mechanism and the positioning communication joint mechanism, the two mechanisms are connected with the first water tank and the second water tank through the delivery pipe and the backflow pipe respectively, a delivery-backflow pipe is formed, the delivery pipe is used for delivering and drip irrigation of fertilizer water, when the delivery pipe is blocked, the positioning communication joint mechanism is used for quickly opening the expansion valve body, the delivery pipe is communicated with the backflow pipe, the electric heating rod is used for heating, hot water is circulated in the delivery pipe to dissolve the crystal, and the expansion valve body is connected with the backflow pipe, so that when the hot water is blocked by the crystal, the hot water quickly enters the backflow pipe to disperse water pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of garden drip irrigation, in particular to a drip irrigation device for landscaping. BACKGROUND

[0002] Landscaping is the use of engineering technology and artistic means in a certain area, through landform modification, further mountain building, rock stacking, water management, tree and plant planting, building construction and road arrangement to create a beautiful natural environment and recreation area.

[0003] In modern landscaping maintenance, drip irrigation technology has become the mainstream irrigation method due to its high water-saving rate, high water and fertilizer utilization rate, and small interference to plant growth, but the existing drip irrigation system has high maintenance cost and low irrigation efficiency due to the following problems during long-term operation:

[0004] 1. Fertilizer crystallization blockage: phosphate and nitrate in water-soluble fertilizer are prone to crystallization and blockage of drip irrigation nozzles and pipe inner walls during low-temperature or long-distance transportation, resulting in uneven irrigation and water and fertilizer deficiency in some areas;

[0005] 2. Difficulty in dredging: traditional drip irrigation pipes are usually integrally formed, so after blockage, the nozzles need to be removed or the pipes need to be cut for cleaning, which has a long maintenance cycle and requires 2-3 days for single maintenance, and the pipes are easily damaged again;

[0006] 3. Poor flexibility: the pipe fixing and valve control of the existing drip irrigation device are designed in a decentralized manner, and the opening and closing of the valve need to be operated by a complicated knob, which is extremely low in efficiency.

[0007] Therefore, a drip irrigation device for landscaping is designed to effectively dredge the blockage and solve the above problems. SUMMARY

[0008] In view of the deficiencies of the prior art, the present application provides a drip irrigation device for landscaping, which solves the problem of blockage of pipes and nozzles during existing drip irrigation.

[0009] To achieve the above purpose, the present application realizes the following technical scheme: a drip irrigation device for landscaping, comprising a heating backflow mechanism and a positioning communication connecting mechanism, the heating backflow mechanism comprising a water storage tank, a partition plate being fixedly connected between the top and the bottom of the inner cavity of the water storage tank, a first water groove and a second water groove being respectively arranged on the left side and the right side of the inner part of the water storage tank, an electric motor being fixedly connected to the top of the water storage tank through a support, an output shaft of the electric motor being fixedly connected to a rotating rod through a shaft coupling, and the bottom end of the rotating rod penetrating through the water storage tank and being rotatably connected to the bottom of the inner cavity of the second water groove through a bearing piece, stirring blades being fixedly installed on the surface of the rotating rod and inside the second water groove, and the positioning communication connecting mechanism being arranged at the front part of the water storage tank.

[0010] Preferably, the second water tank top of the cavity is provided with lifting opening on both sides, and the lifting opening is provided with several, the rear of the water storage tank is fixedly connected with an electric telescopic rod, the top of the electric telescopic rod is fixedly connected with a U-shaped frame, the bottom of the U-shaped frame is fixedly connected with an electric heating rod through the fixed block on both sides, and the number of the electric heating rod is same with the lifting opening, the bottom of the electric heating rod extends to the inside of the second water tank through the lifting opening.

[0011] Preferably, the side of the partition plate is provided with a water channel, the upper part of the inner side of the water channel is slidably installed with a blocking sliding frame, the left side of the U-shaped frame is fixedly connected with a vertical pressing rod through a fixed plate, the left side of the blocking sliding frame is fixedly connected with a buoyancy frame, and the surface of the water storage tank is fixedly installed with a water pump matched with the second water tank through the opening.

[0012] Preferably, the positioning communication mechanism comprises a conveying pipe, a return pipe and a flat plate, the conveying pipe is connected with the water outlet of the water pump, the return pipe is communicated with the first water tank, the bottom of the flat plate is fixedly connected with a strip plate through the support on both sides, the top of the strip plate is fixedly connected with an arc-shaped clamping frame, the return pipe and the conveying pipe are arranged on the inner side of the arc-shaped clamping frame, the front side and the rear side of the bottom of the strip plate are fixedly connected with a tapered plug rod through the fixed block, and one side of the conveying pipe is fixedly installed with a drip irrigation nozzle through the opening.

[0013] Preferably, the top of the flat plate is provided with an expansion valve body, the top of the expansion valve body is provided with a knob plate, the front and rear sides of the flat plate are provided with a rectangular sliding opening, the bottom of the flat plate is fixedly connected with a bearing base on both sides, and the inner side of the bearing base is rotatably connected with a threaded rod.

[0014] Preferably, the front and rear parts of the surface of the threaded rod are threadedly connected with a threaded sleeve plate, the top of the threaded sleeve plate is fixedly connected with a bent frame, the inner sides of the bent frames on the front and rear parts are fixedly connected with guide sliding columns, one end of the guide sliding column extends to the inside of the rectangular sliding opening, the guide sliding column is slidably connected with the rectangular sliding opening, the top of the bent frame is fixedly connected with a clamping plate, and the clamping plates on the front and rear parts are in contact with the expansion valve body.

[0015] Preferably, the front and rear sides of the top of the flat plate are provided with a circular insertion groove, the inner side of the circular insertion groove is provided with a circular insertion rod, the top ends of the two circular insertion rods are fixedly connected with a circular ring frame, the right side of the circular ring frame is fixedly connected with a storage frame, the top of the inner cavity of the circular ring frame is rotatably connected with a gear cylinder through a bearing, and the bottom of the gear cylinder is provided with a butt joint square groove matched with the knob plate.

[0016] Preferably, the inner side of the receiving frame is provided with a gear cylinder meshing with the gear teeth plate, the top of the gear teeth plate is provided with a through slot, the top of the receiving frame cavity is fixedly connected with a T-shaped sliding block matched with the through slot, and the rear end of the gear teeth plate is fixedly connected with a pull ring.

[0017] The application provides a drip irrigation device for landscaping.

[0018] (1) The drip irrigation device for landscaping is combined with the heating backflow mechanism and the positioning communication connecting mechanism, the two mechanisms are connected with the first water tank and the second water tank through the conveying pipe and the backflow pipe respectively, a conveying and backflow pipeline is formed, the conveying pipe is used for conveying and drip irrigation of fertilizer water, when the conveying pipe is blocked, the positioning communication connecting mechanism is used for quickly opening the expansion valve body through the gear cylinder and the gear teeth plate, the conveying pipe and the backflow pipe are communicated, the electric heating rod is used for heating, hot water flows through the conveying pipe to dissolve the crystal, the expansion valve body is connected with the backflow pipe, when the hot water is blocked by the crystal, the hot water quickly enters the backflow pipe to disperse water pressure, the conveying pipe is prevented from being broken, the hot water continuously washes and dissolves the blocked crystal, the dredging effect is improved, and the maintenance cost is reduced.

[0019] (2) The drip irrigation device for landscaping is provided with the receiving frame and the circular ring frame on the top of the flat plate, and is matched with the gear teeth plate, the gear cylinder and the butt joint groove, when the conveying pipe is dredged, the staff directly pulls the pull ring, the gear teeth plate drives the gear cylinder to rotate, the knob plate connected with the butt joint groove is synchronously rotated to open the expansion valve body, the conveying pipe and the backflow pipe are communicated, the operation efficiency of the staff is improved, and the knob on the top of the expansion valve body is not needed to be rotated.

[0020] (3) The drip irrigation device for landscaping is provided with the rectangular sliding opening and the circular insertion groove on the top and the surface of the flat plate, is matched with the clamping plate, the arc-shaped clamping frame and the circular insertion rod, the conveying pipe, the backflow pipe and the expansion valve body are fixed and limited, each group of expansion valve bodies can be stably connected, the expansion valve body is prevented from leaking due to pulling of the conveying pipe and the backflow pipe, the circular ring frame and the receiving frame can be disassembled through the circular insertion groove, the flexibility of the positioning communication connecting mechanism is improved, replacement and maintenance of parts are facilitated, and the flat plate and the tapered insertion rod can guarantee effective laying of the conveying pipe and the backflow pipe. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the application.

[0022] Figure 2 A sectional view of the water storage tank structure of the present application;

[0023] Figure 3 A sectional view of the water storage tank structure of the present application; Figure 2 A partial enlarged view of A in the present application;

[0024] Figure 4 A schematic view of the electric telescopic rod, U-shaped frame and electric heating rod structure of the present application;

[0025] Figure 5 A schematic view of the positioning communication mechanism structure of the present application;

[0026] Figure 6 A bottom view of the delivery pipe, return pipe and flat mounting plate structure of the present application;

[0027] Figure 7 A sectional view of the circular ring frame and storage frame structure of the present application;

[0028] Figure 8 A partial enlarged view of B in the present application; Figure 7 A partial enlarged view of B in the present application;

[0029] Figure 9 A schematic view of the expansion valve body and knob plate structure of the present application;

[0030] Figure 10 A schematic view of the bent frame, guide slide column and clamping plate structure of the present application;

[0031] Figure 11 A schematic view of the flat mounting plate, rectangular slide opening and circular slot structure of the present application;

[0032] Figure 12 A schematic view of the circular ring frame, storage frame and gear cylinder structure of the present application.

[0033] In the figure: 1, heating reflux mechanism; 2, positioning communication connection mechanism; 101, water storage tank; 102, partition plate; 103, first water tank; 104, second water tank; 105, motor; 106, rotating rod; 107, stirring blade; 108, lifting opening; 109, electric telescopic rod; 110, U-shaped frame; 111, electric heating rod; 112, horizontal pressing plate; 113, vertical pressing rod; 114, water channel; 115, blocking sliding frame; 116, buoyancy frame; 117, water pump; 201, conveying pipe; 202, reflux pipe; 203, flat plate; 204, strip plate; 205, arc-shaped clamping frame; 206, conical insertion rod; 207, drip irrigation sprinkler; 208, expansion valve body; 209, knob plate; 210, rectangular sliding opening; 211, bearing base; 212, threaded rod; 213, threaded sleeve plate; 214, bent frame; 215, guide sliding column; 216, clamping plate; 217, circular insertion slot; 218, circular insertion rod; 219, circular ring frame; 220, storage frame; 221, gear cylinder; 222, butt joint rectangular slot; 223, toothed plate; 224, sliding channel; 225, T-shaped sliding block; 226, pull ring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Please refer to Figures 1-12 , the present application provides a technical scheme: a drip irrigation device for landscaping, comprising a heating reflux mechanism 1 and a positioning communication connection mechanism 2;

[0036] Please refer to Figure 2 , Figure 3 and Figure 4 , which show the overall structure of the heating reflux mechanism 1. The heating reflux mechanism 1 comprises a water storage tank 101, a partition plate 102 fixedly connected between the top and the bottom of the inner cavity of the water storage tank 101, a first water tank 103 and a second water tank 104 respectively arranged on the left side and the right side of the inner part of the water storage tank 101, a motor 105 fixedly connected to the top of the water storage tank 101 through a support, the motor 105 being a servo motor, a rotating rod 106 fixedly connected to the output shaft of the motor 105 through a shaft coupling, the bottom end of the rotating rod 106 penetrating through the water storage tank 101 and being rotatably connected to the bottom of the inner cavity of the second water tank 104 through a bearing piece, a stirring blade 107 fixedly installed on the surface of the rotating rod 106 and located in the inner part of the second water tank 104, and a positioning communication connection mechanism 2 arranged at the front part of the water storage tank 101;

[0037] The top of the inner cavity of the second water tank 104 is provided with lifting openings 108 on both sides, and a plurality of lifting openings 108 are arranged; the rear part of the water storage tank 101 is fixedly connected with an electric telescopic rod 109, the top end of the electric telescopic rod 109 is fixedly connected with a U-shaped frame 110, the bottom of the U-shaped frame 110 is fixedly connected with electric heating rods 111 through fixing blocks on both sides, and the number of the electric heating rods 111 is the same as that of the lifting openings 108; the bottom end of the electric heating rod 111 penetrates through the lifting opening 108 and extends to the inside of the second water tank 104.

[0038] A water passing groove 114 is formed on one side of the partition plate 102, and a blocking sliding frame 115 is slidably installed on the upper part of the inner side of the water passing groove 114; a vertical pressing rod 113 is fixedly connected to the left side of the U-shaped frame 110 through a fixed plate; a buoyancy frame 116 is fixedly connected to the left side of the blocking sliding frame 115; the material of the buoyancy frame 116 is engineering plastic; and a water pump 117 used in cooperation with the second water tank 104 is fixedly installed on the surface of the water storage tank 101 through an opening.

[0039] Please refer to Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 , which show the structure of the positioning communication connector 2 as a whole, the positioning communication connector 2 comprising a conveying pipe 201, a return pipe 202 and a flat plate 203; the conveying pipe 201 is connected with the water outlet of the water pump 117; the return pipe 202 is in communication with the first water tank 103; the bottom of the flat plate 203 is fixedly connected with strip plates 204 through supports on both sides; the top of the strip plate 204 is fixedly connected with an arc-shaped clamping frame 205; the material of the arc-shaped clamping frame 205 is engineering plastic, the arc is adapted to the diameter of the pipe, and the inner wall is provided with a rubber pad for fixing the conveying pipe 201 and the return pipe 202 to avoid interface leakage caused by pipe displacement; the return pipe 202 and the conveying pipe 201 are arranged inside the arc-shaped clamping frame 205; the front side and the rear side of the bottom of the strip plate 204 are fixedly connected with tapered insertion rods 206 through fixing blocks; one side of the conveying pipe 201 is fixedly installed with a drip irrigation nozzle 207 through an opening; the drip irrigation nozzle 207 is a pressure-compensated nozzle.

[0040] The top of the flat plate 203 is provided with an expansion valve body 208; the top of the expansion valve body 208 is provided with a knob plate 209; the front and rear parts of the flat plate 203 are provided with rectangular sliding openings 210 on both sides; the bottom of the flat plate 203 is fixedly connected with bearing bases 211 on both sides; the inner side of the bearing base 211 is rotatably connected with a threaded rod 212.

[0041] The front and rear surfaces of the threaded rod 212 are threadedly connected with threaded sleeve plates 213, the top of the threaded sleeve plates 213 is fixedly connected with bent frames 214, the inner sides of the front and rear bent frames 214 are fixedly connected with guide sliding columns 215, one end of the guide sliding columns 215 extends to the inside of the rectangular sliding opening 210, the guide sliding columns 215 are slidingly connected with the rectangular sliding opening 210, the top of the bent frame 214 is fixedly connected with clamping plates 216, the front and rear clamping plates 216 are in contact with the expansion valve body 208;

[0042] The front and rear sides of the top of the flat plate 203 are provided with circular insertion grooves 217, the inner sides of the circular insertion grooves 217 are provided with circular insertion rods 218, the top ends of the two circular insertion rods 218 are fixedly connected with a circular ring frame 219, the right side of the circular ring frame 219 is fixedly connected with a receiving frame 220, the top of the inner cavity of the circular ring frame 219 is rotatably connected with a gear cylinder 221 through a bearing piece, the bottom of the gear cylinder 221 is provided with a butt joint slot 222 which is used in cooperation with the knob plate 209;

[0043] The inner side of the receiving frame 220 is provided with a toothed plate 223 which is engaged with the gear cylinder 221, the top of the toothed plate 223 is provided with a sliding slot 224 which penetrates through the bottom, the top of the inner cavity of the receiving frame 220 is fixedly connected with a T-shaped sliding block 225 which is used in cooperation with the sliding slot 224, the rear end of the toothed plate 223 is fixedly connected with a pull ring 226.

[0044] In use, the delivery pipe 201 and the return pipe 202 are stretched, then a flat plate 203 is installed at regular intervals, first, the delivery pipe 201 and the return pipe 202 are clamped into the inner side of the arc-shaped clamping frame 205, then a punch is used to punch holes on the opposite side of the delivery pipe 201 and the return pipe 202, then the two ends of the expansion valve body 208 are connected with the holes to make the delivery pipe 201 and the return pipe 202 communicate, then the knob plate 209 is rotated to the transverse state to make the expansion valve body 208 closed, then the expansion valve body 208 is placed on the top of the flat plate 203, the two threaded rods 212 are rotated by hand to drive the front and rear clamping plates 216 to move towards each other, finally the clamping plates 216 fix and limit the expansion valve body 208, after the expansion valve body 208 is fixed, the tapered insertion rod 206 is inserted into the ground to fix the flat plate 203, the delivery pipe 201 and the return pipe 202, finally the two round insertion rods 218 are inserted into the inner side of the round insertion slot 217, and the butt joint rectangular slot 222 is butt jointed with the knob plate 209, at this time the installation of the positioning and connecting mechanism 2 is completed, in daily use, water and water-soluble fertilizer are poured into the first water tank 103 and the second water tank 104, at this time the blocking sliding frame 115 rises to open the water passage 114 under the buoyancy of the buoyancy frame 116, the motor 105 is started to drive the stirring blade 107 to rotate to dissolve the fertilizer and water, then the water pump 117 is started to pump out the fertilizer water, and the fertilizer is discharged through the delivery pipe 201, at this time, since the expansion valve bodies 208 are in separate states, the fertilizer water in the delivery pipe 201 will be sprayed out of the drip irrigation nozzle 207 to drip irrigation outside the plant, when the delivery pipe 201 and the drip irrigation nozzle 207 are blocked, the teeth plate 223 is hooked by fingers and pulled in the limiting of the T-shaped sliding block 225, after the teeth plate 223 is pulled, the gear cylinder 221 is rotated synchronously, since the knob plate 209 is butt jointed with the butt joint rectangular slot 222, after the gear cylinder 221 is rotated, the knob plate 209 is also rotated to open the expansion valve body 208, then the electric telescopic rod 109 is started to pull the electric heating rod 111 and the vertical pressing rod 113 to descend, when the electric telescopic rod 109 descends to the bottom, the electric heating rod 111 enters the second water tank 104, and the bottom end of the vertical pressing rod 113 presses the buoyancy frame 116 to make the blocking sliding frame 115 close the water passage 114, then water is poured into the second water tank 104 to heat the electric heating rod 111 to increase the water temperature, after the water temperature is increased, the water pump 117 is started to pour hot water into the delivery pipe 201, at this time, when the hot water flows through the delivery pipe 201, the crystals inside will be melted, then the hot water is discharged through the drip irrigation nozzle 207, if the part of the delivery pipe 201 and the part of the drip irrigation nozzle 207 are seriously blocked and cannot drain water, the hot water flows through the part, then the hot water is transmitted to the return pipe 202 through the expansion valve body 208, finally the hot water is returned to the first water tank 103 through the return pipe 202 and stored, through the return setting,The hot water can gradually dissolve the crystal and dredge, avoid damaging the delivery pipe 201, improve the service life of the whole equipment, after all the drip irrigation sprinkler 207 is completed dredging, the gear plate 223 drives the gear cylinder 221 to reverse and close the expansion valve body 208, then complete the dredging of the delivery pipe 201 and the drip irrigation sprinkler 207.

[0045] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

Claims

1. A drip irrigation device for landscaping, comprising a heating and reflux mechanism (1) and a positioning and connecting mechanism (2), characterized in that: The heating reflux mechanism (1) includes a water storage tank (101). A partition plate (102) is fixedly connected between the top and bottom of the inner cavity of the water storage tank (101). A first water tank (103) and a second water tank (104) are respectively provided on the left and right sides inside the water storage tank (101). A motor (105) is fixedly connected to the top of the water storage tank (101) through a bracket. A rotating rod (106) is fixedly connected to the output shaft of the motor (105) through a coupling. The bottom end of the rotating rod (106) passes through the water storage tank (101) and is rotatably connected to the bottom of the inner cavity of the second water tank (104) through a bearing. A stirring blade (107) is fixedly installed on the surface of the rotating rod (106) and inside the second water tank (104). The positioning and connecting mechanism (2) is located at the front of the water storage tank (101). The second water tank (104) has lifting ports (108) on both sides of the top of the inner cavity, and there are several lifting ports (108). The rear of the water storage tank (101) is fixedly connected to an electric telescopic rod (109). The top of the electric telescopic rod (109) is fixedly connected to a U-shaped frame (110). The bottom sides of the U-shaped frame (110) are fixedly connected to electric heating rods (111) by fixing blocks. The number of electric heating rods (111) is the same as the number of lifting ports (108). The bottom end of the electric heating rods (111) passes through the lifting ports (108) and extends into the interior of the second water tank (104). A water channel (114) is provided on one side of the partition plate (102). A sealing slide frame (115) is slidably installed on the upper part of the inner side of the water channel (114). A vertical pressure rod (113) is fixedly connected to the left side of the U-shaped frame (110) through a fixing plate. A buoyancy frame (116) is fixedly connected to the left side of the sealing slide frame (115). A water pump (117) for use with the second water tank (104) is fixedly installed on the surface of the water storage tank (101) through an opening. The positioning and connecting mechanism (2) includes a delivery pipe (201), a return pipe (202), and a flat plate (203). The delivery pipe (201) is connected to the outlet of the water pump (117), and the return pipe (202) is connected to the first water tank (103). The bottom sides of the flat plate (203) are fixedly connected to strip plates (204) by brackets. The top of the strip plate (204) is fixedly connected to an arc-shaped frame (205). The return pipe (202) and the delivery pipe (201) are both located inside the arc-shaped frame (205). The front and rear sides of the bottom of the strip plate (204) are fixedly connected to tapered rods (206) by fixing blocks. A drip irrigation nozzle (207) is fixedly installed on one side of the delivery pipe (201) by opening. The top of the flat plate (203) is provided with an expansion valve body (208), the top of the expansion valve body (208) is provided with a knob plate (209), the front and rear sides of the flat plate (203) are provided with rectangular sliding openings (210), the bottom sides of the flat plate (203) are fixedly connected with bearing bases (211), and the inner side of the bearing bases (211) is rotatably connected with threaded rods (212).

2. The drip irrigation device for landscaping according to claim 1, characterized in that: The front and rear parts of the threaded rod (212) are threadedly connected to threaded sleeve plates (213). A bent frame (214) is fixedly connected to the top of the threaded sleeve plate (213). A guide column (215) is fixedly connected to the inner side of the bent frame (214) at the front and rear. One end of the guide column (215) extends into the interior of the rectangular slide (210). The guide column (215) is slidably connected to the rectangular slide (210). A clamping plate (216) is fixedly connected to the top of the bent frame (214). Both the front and rear clamping plates (216) are in contact with the expansion valve body (208).

3. A drip irrigation device for landscaping according to claim 2, characterized in that: The top of the flat plate (203) is provided with round slots (217) on the front and rear sides. A round insert (218) is provided on the inner side of the round slot (217). A circular frame (219) is fixedly connected between the top ends of the two round inserts (218). A storage frame (220) is fixedly connected to the right side of the circular frame (219). A gear cylinder (221) is rotatably connected to the top of the inner cavity of the circular frame (219) through a bearing. A mating groove (222) is provided at the bottom of the gear cylinder (221) to cooperate with the knob plate (209).

4. A drip irrigation device for landscaping according to claim 3, characterized in that: The inner side of the storage frame (220) is provided with a toothed plate (223) that meshes with the gear cylinder (221). The top of the toothed plate (223) is provided with a sliding groove (224) that extends to the bottom. The top of the inner cavity of the storage frame (220) is fixedly connected with a T-shaped slider (225) that cooperates with the sliding groove (224). The rear end of the toothed plate (223) is fixedly connected with a pull ring (226).

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