Soil trace element compensation device for landscape plant regional nutrient deficiency symptom

Abstract

The invention relates to the technical field of garden soil trace element compensation, and discloses a soil trace element compensation device for a garden plant regional nutrient deficiency symptom.The soil trace element compensation device comprises an adjusting sleeve, a pointing shifting ring is fixedly connected to the outer portion of the adjusting sleeve, and an irrigation inner pipe and a liquid fertilizer outer sleeve are arranged in the adjusting sleeve; the top of the irrigation inner pipe is provided with an irrigation water connector, the top of the liquid fertilizer outer sleeve is provided with a liquid fertilizer connector, the middle of the liquid fertilizer outer sleeve is fixedly provided with a directional partition plate, the bottom of the directional partition plate is fixedly connected with a liquid fertilizer double-layer partition plate, and the bottom space of the directional partition plate is evenly divided by the liquid fertilizer double-layer partition plate. A circulation opening is formed in the directional partition plate close to the pointing side of the pointing shifting ring. The telescopic lateral extension pipe is arranged and matched with the pointing direction of the pointing shifting ring, the distance between the fertilization opening and the root system is specifically extended, an effective root area is anchored to be more attached to the root surface, and the absorption efficiency of liquid fertilizer is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of garden soil trace element compensation, in particular to a soil trace element compensation device for regional deficiency symptoms of garden plants. BACKGROUND

[0002] Trace elements refer to elements that account for less than 0.01% of the total mass of a living body, and plants require trace elements (such as boron, iron, zinc, manganese, molybdenum, etc.) in small amounts (usually less than 0.01% of dry weight), but they directly participate in photosynthesis, enzyme activation, nutrient transport, and other core physiological processes. Trace elements are essential for plants but are required in small amounts. When these elements are lacking in the soil or cannot be utilized by plants, it will lead to poor plant growth.

[0003] The traditional trace element fertilization method is to add or spray compounds containing certain trace elements. Mass flow and diffusion are two core approaches for elements to reach the roots. However, traditional fertilization often overlooks their differences. Mass flow relies on water flow driven by transpiration, which is suitable for elements with strong water solubility (such as boron). Diffusion relies on concentration gradients, which is more important for elements with poor mobility (such as phosphorus). The main drawback of traditional fertilization is that it cannot be designed differently for the two migration pathways of root mass flow and diffusion, resulting in low trace element compensation absorption efficiency, low fertilizer absorption rate, and high soil residual degree. SUMMARY

[0004] In view of the deficiencies of the existing soil trace element compensation device in the background art, the present application provides a soil trace element compensation device for regional deficiency symptoms of garden plants, which solves the technical problems of low fertilizer absorption rate and high soil residual degree in the background art.

[0005] The present application provides the following technical solution: a soil trace element compensation device for regional deficiency symptoms of garden plants, comprising an adjusting sleeve, an indicating ring is fixedly connected to the outside of the adjusting sleeve, an irrigation inner tube and a liquid fertilizer outer sleeve are arranged in the adjusting sleeve, an irrigation water interface is arranged at the top of the irrigation inner tube, a liquid fertilizer interface is arranged at the top of the liquid fertilizer outer sleeve, a directional partition plate is fixedly arranged in the middle of the liquid fertilizer outer sleeve, a liquid fertilizer double-layer partition plate is fixedly connected to the bottom of the directional partition plate, the bottom space of the directional partition plate is evenly divided by the liquid fertilizer double-layer partition plate, a flow-through opening is formed in the directional partition plate close to the indicating ring pointing side, an underground pipe is movably sleeved at the bottom of the adjusting sleeve, an irrigation sleeve and a liquid fertilizer sleeve are arranged in the underground pipe, the irrigation sleeve is movably sleeved with the irrigation inner tube, the liquid fertilizer sleeve is movably sleeved with the liquid fertilizer outer sleeve, and a limiting block is arranged at the sleeving position, a single-layer partition plate is fixedly connected in the liquid fertilizer sleeve, a fertilizer outlet pipe opening is formed at the bottom of the underground pipe, and a laterally extending pipe is movably installed through the fertilizer outlet pipe opening.

[0006] Preferably, the irrigation sleeve is provided with an electromagnetic block at the bottom, the irrigation pipe bottom cover is provided with an adsorption block, the irrigation inner pipe is provided with an irrigation water outlet at the same height facing the compartment, and a plurality of groups of water outlet pipes with different heights are arranged in the liquid fertilizer sleeve, and the water outlet pipes are connected with the outer wall of the liquid fertilizer sleeve.

[0007] Preferably, the top of the liquid fertilizer sleeve is fixedly connected with a fixed sealing sheet, the top of the irrigation inner pipe is fixedly connected with an inner partition sheet, the bottom of the liquid fertilizer sleeve is fixedly connected with an irrigation double-layer partition plate, a corresponding through slot is arranged on the irrigation pipe bottom cover for the irrigation double-layer partition plate to extend into the irrigation inner pipe, the inner partition sheet is movably sleeved into the interlayer of the irrigation double-layer partition plate, a sealing plate is fixedly connected to the compartment facing the direction of the pull ring, through holes are arranged on the bottom of the remaining compartments of the irrigation pipe bottom cover, the electromagnetic block is movably installed, a supporting spring is fixedly installed at the bottom of the electromagnetic block, a piston plate is fixedly connected to the top of the electromagnetic block, and a hydraulic port is arranged on the bottom of the irrigation sleeve away from the direction of the pull ring.

[0008] Preferably, the bottom of the underground pipe is fixedly connected with a drill bit, and the outer side of the upper side of the underground pipe is fixedly connected with an insertion auxiliary ring.

[0009] Preferably, the single-layer partition plate is movably sleeved into the interlayer of the liquid fertilizer double-layer partition plate, when the adjusting sleeve is pulled to the limiting block, the single-layer partition plate is just separated out of the liquid fertilizer double-layer partition plate, and the inner partition sheet is just separated out of the irrigation double-layer partition plate.

[0010] Preferably, the lateral extension pipe corresponds to the compartment separated by the single-layer partition plate one by one.

[0011] Preferably, the fixed sealing sheet is opposite to the position where the through port is arranged on the directional partition plate and is consistent in shape, and when the adjusting sleeve is lowered to the height of the directional partition plate and the fixed sealing sheet, the closing is formed.

[0012] The present application has the following beneficial effects: 1、The present application can extend the distance between the fertilization port and the root system by setting the telescopic lateral extension pipe and cooperating with the direction of the pull ring, anchor the effective root zone to more closely adhere to the root surface, and improve the absorption efficiency of the liquid fertilizer.

[0013] 2、The present application can adjust the water outlet height of the irrigation water by adjusting the butt joint of the irrigation water outlet relative to the water outlet pipe group with different heights, so as to meet the irrigation demand of soil with different permeability, so that the active migration layer formed at the lateral extension pipe is always in the best state of water content, which is more beneficial to the mass flow absorption of the liquid fertilizer at the lateral extension pipe, so as to improve the absorption and utilization efficiency of the mass flow absorption type element liquid fertilizer.

[0014] 3、The present application forms a closure by moving the directional partition downward to be consistent with the fixed sealing piece height, to prevent the continuous outflow of the diffusion-absorption type element fertilizer solution, and the irrigation water accumulated under high pressure flows in and drives the piston plate, which lifts the irrigation pipe bottom cover upward to make the adjusting sleeve return as a whole, so as to realize the interval time compensation of the liquid fertilizer pulse mode, and the rhizosphere concentration gradient is increased by multiple times, thereby being suitable for the absorption of diffusion-absorption type elements. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the cross section of the rotatable state of the present application; Figure 3 It is a schematic diagram of the local enlarged structure of the structure at A in the drawing of the present application; Figure 4 It is a schematic diagram of the cross section of the overall structure of the present application; Figure 5 It is a schematic diagram of the cross section of the overall structure of the adjusting sleeve of the present application; Figure 6 It is a schematic diagram of the cross section of the overall structure of the underground pipe of the present application; Figure 7 It is a schematic diagram of the overall structure of the adjusting sleeve of the present application; Figure 8 It is a schematic diagram of the overall structure of the present application.

[0016] In the drawing: 1, adjusting sleeve; 11, pointing ring; 12, irrigation inner pipe; 121, irrigation water interface; 122, irrigation pipe bottom cover; 123, irrigation water outlet; 124, inner partition; 13, liquid fertilizer outer sleeve; 131, liquid fertilizer interface; 132, directional partition; 133, liquid fertilizer double-layer partition; 2, underground pipe; 21, insertion auxiliary ring; 22, irrigation sleeve; 223, irrigation double-layer partition; 23, liquid fertilizer sleeve; 231, water outlet group; 232, water outlet; 233, single-layer partition; 234, fixed sealing piece; 3, drill bit; 30, hydraulic port; 31, electromagnetic block; 32, supporting spring; 33, piston plate; 4, laterally extending pipe. DETAILED DESCRIPTION

[0017] 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.

[0018] Please refer to Figures 1-3The utility model provides a soil trace element compensation device for regional deficiency of garden plants, including adjusting sleeve 1, the outside fixed connection of adjusting sleeve 1 has the direction of dial ring 11, be provided with irrigation inner tube 12 and liquid fertilizer outer sleeve 13 in adjusting sleeve 1, the top of irrigation inner tube 12 is provided with irrigation water interface 121, the top of liquid fertilizer outer sleeve 13 is provided with liquid fertilizer interface 131, the middle fixed of liquid fertilizer outer sleeve 13 is provided with directional baffle 132, the bottom fixed connection of directional baffle 132 has liquid fertilizer double -deck partition 133, and the bottom space of directional baffle 132 is evenly separated by liquid fertilizer double -deck partition 133, and the directional baffle 132 is opened in the flow -through mouth near the direction of dial ring 11 points to side, and the liquid fertilizer that flows into the liquid fertilizer outer sleeve 13 on the upside of directional baffle 132 through liquid fertilizer interface 131 enters the area in the separation of the downside liquid fertilizer double -deck partition 133 by the flow -through mouth, the bottom movable sleeve of adjusting sleeve 1 is connected with underground pipe 2, the bottom fixed connection of underground pipe 2 has drill bit 3, and the underground pipe 2 is inserted into the soil by drill bit 3, and the outside fixed connection of the upside of underground pipe 2 has inserted auxiliary ring 21, and the device is inserted into the soil by the auxiliary operator, and irrigation sleeve 22 and liquid fertilizer sleeve 23 are provided in underground pipe 2, irrigation sleeve 22 is movably sleeved with irrigation inner tube 12, liquid fertilizer sleeve 23 is movably sleeved with liquid fertilizer outer sleeve 13, and the sleeve is provided with a limit block, to ensure that the whole adjusting sleeve 1 can move up and down along the underground pipe 2, and will not fall off during the movement, the single -deck partition 233 is fixedly connected in liquid fertilizer sleeve 23, and the single -deck partition 233 is movably sleeved in the interlayer of liquid fertilizer double -deck partition 133, when adjusting sleeve 1 is pulled up to the limit block, the single -deck partition 233 is just taken out to the outside of liquid fertilizer double -deck partition 133, at this moment, adjusting sleeve 1 can be rotated to make it rotate relative to underground pipe 2, according to the direction of dial ring 11 points to the plant direction to judge that the flow -through mouth of directional baffle 132 rotates to the plant direction and then is placed back to adjusting sleeve 1, so that the single -deck partition 233 is sleeved in liquid fertilizer double -deck partition 133 again, wherein the outer edge of adjusting sleeve 1 is provided with an auxiliary limit block to ensure that the single -deck partition 233 can be accurately docked in liquid fertilizer double -deck partition 133 after rotation, at this moment, the liquid fertilizer is introduced into the single -deck partition 233 interval on the plant side through the flow -through mouth, and the bottom of underground pipe 2 is provided with a fertilizer outlet, and a lateral extension pipe 4 is movably installed in the fertilizer outlet, the lateral extension pipe 4 corresponds to the interval separated by the single -deck partition 233, and the liquid fertilizer introduced into the interval on the plant side is pushed outwards by the lateral extension pipe 4, so that the fertilizer outlet is anchored to the effective root area more attached to the root surface.

[0019] Please refer to Figures 4-5, irrigation sleeve 22 bottom installation of electromagnetic block 31, irrigation pipe cover 122 is provided with adsorption block, by controlling electromagnetic force control electromagnetic block 31, the whole up or down height of the lifting adjusting sleeve 1, irrigation inner tube 12 upper facing compartment is opened with irrigation water outlet 123, liquid fertilizer sleeve 23 inside corresponding position is provided with multiple groups of different height water outlet pipe group 231, water outlet pipe group 231 and liquid fertilizer sleeve 23 outer wall connection place is opened with water outlet 232, when the whole up and down moving adjusting sleeve 1 makes irrigation inner tube 12 on irrigation water outlet 123 relative to different height water outlet pipe group 231 butt joint, adjust the water height of irrigation water, to use the irrigation demand of different permeability soil, make its active migration layer formed at lateral extension pipe 4 always in the best state of water content, more conducive to the quality flow absorption of lateral extension pipe 4 fertilizer liquid, to improve the absorption utilization efficiency of quality flow absorption type element fertilizer liquid.

[0020] Please see Figures 6-8The top of the liquid fertilizer sleeve 23 is fixedly connected with a fixed sealing sheet 234, the fixed sealing sheet 234 is opposite to the position, at which the flow-through opening is arranged on the directional partition plate 132, and is consistent in shape, when the whole adjusting sleeve 1 is lowered to be consistent in height with the fixed sealing sheet 234, the closing is formed, the fertilizer liquid is prevented from continuously flowing out, the inner partition sheet 124 is fixedly connected to the top of the irrigation inner tube 12, the irrigation double-layer partition plate 223 is fixedly connected to the bottom of the liquid fertilizer sleeve 23, the irrigation pipe bottom cover 122 is provided with corresponding through grooves, the irrigation double-layer partition plate 223 extends into the irrigation inner tube 12, the inner partition sheet 124 is movably sleeved into the interlayer of the irrigation double-layer partition plate 223, when the adjusting sleeve 1 is pulled up to the position of the limiting block, the inner partition sheet 124 is just out of the irrigation double-layer partition plate 223, at this time, the adjusting sleeve 1 can be rotated to rotate relative to the underground tube 2, the sealing plate is fixedly connected to the partition room, which faces the position of the directional pull ring 11, the irrigation water outlet 123 is arranged on the bottom of the irrigation pipe bottom cover 122, when the whole adjusting sleeve 1 is lowered to be consistent in height with the fixed sealing sheet 234, the closing is formed, at this time, the irrigation water in the irrigation inner tube 12 flows downwards to the irrigation sleeve 22 at the bottom of the irrigation pipe bottom cover 122 through the through holes in the irrigation pipe bottom cover 122, the electromagnetic block 31 is movably arranged, the supporting spring 32 is fixedly arranged at the bottom of the electromagnetic block 31, the piston plate 33 is fixedly connected to the top of the electromagnetic block 31, the hydraulic pressure through opening 30 is arranged at the bottom of the irrigation sleeve 22, facing the position of the directional pull ring 11, so that the irrigation water accumulated in the irrigation sleeve 22 flows in and presses the piston plate 33 to move downwards, until the electromagnetic block 31 is compressed by the supporting spring 32 to move downwards, so that the electromagnetic block 31 is away from the irrigation pipe bottom cover 122, the adsorption force is reduced, the irrigation water pushes the irrigation pipe bottom cover 122 to move upwards, so that the whole adjusting sleeve 1 moves back, at this time, the fixed sealing sheet 234 is first opened to release the fertilizer liquid outward, with the upward movement of the irrigation pipe bottom cover 122, the irrigation water outlet 123 is connected to the lowest water outlet 232, and the irrigation water is discharged outward, the water pressure of the irrigation sleeve 22 is reduced, the electromagnetic block 31 is reset by the supporting spring 32, after the water pressure is reduced to be lower than the adsorption force of the electromagnetic block 31, the electromagnetic block 31 is adsorbed again to move downwards to the fixed sealing sheet 234 to block, so that the interval time of the liquid fertilizer pulse mode is compensated, the rhizosphere concentration gradient is increased by multiple times, and the element absorption of the diffusion absorption type is suitable.

[0021] The working principle of the use method of the present application is as follows: In use, the device is inserted into the plant to be compensated, the adjusting sleeve 1 is pulled up to the limit block, the single-layer partition plate 233 is just out of the liquid fertilizer double-layer partition plate 133, the inner partition piece 124 is just out of the irrigation double-layer partition plate 223, the adjusting sleeve 1 is rotated relative to the underground pipe 2, the direction of the pointing ring 11 is directed towards the plant, the adjusting sleeve 1 naturally falls back under the action of gravity, the irrigation water pipe and the fertilizer liquid pipe are connected to the irrigation water interface 121 and the liquid fertilizer interface 131 respectively, when the liquid fertilizer connected to the liquid fertilizer interface 131 is a liquid fertilizer of quality flow absorption type elements, the electromagnetic block 31 is set to repulsive force and the repulsive force is adjusted to a certain size, the irrigation inner pipe 12 is moved to the irrigation water outlet 123 and the water outlet pipe group 231 at a certain height to make the irrigation water outlet at a certain height and form an active migration layer with suitable water content at the depth of the lateral extension pipe 4 to provide quality flow absorption type elements migration, realizing the effect of water carrying fertilizer, the liquid fertilizer is introduced into the single-layer partition plate 233 compartment on the plant side, the liquid fertilizer introduced into the compartment on the plant side drives the lateral extension pipe 4 on the side to extend outward, making the fertilizer outlet more attached to the effective root area of the absorption root to realize precise fertilizer compensation towards the plant, when the liquid fertilizer connected to the liquid fertilizer interface 131 is a liquid fertilizer of diffusion absorption type elements, the electromagnetic block 31 is set to attractive force and the attractive force is adjusted to a certain size, the electromagnetic block 31 adsorbs the adjusting sleeve 1 to move downward to the height of the directional partition plate 132 and the fixed sealing piece 234 to form a closure, at this time the continuous flow of fertilizer liquid is prevented to form a closure, and the irrigation water outlet 123 also does not form a closure with any height of the water outlet pipe group 231, the irrigation water in the irrigation inner pipe 12 flows downward through the through hole of the irrigation pipe bottom cover 122 to accumulate in the irrigation sleeve 22 at the bottom of the irrigation pipe bottom cover 122, the high-pressure accumulated irrigation water in the irrigation sleeve 22 flows into and drives the piston plate 33 to move downward, until the electromagnetic block 31 compresses the supporting spring 32 to move downward to make the electromagnetic block 31 away from the adsorption force of the irrigation pipe bottom cover 122, the irrigation water drives the irrigation pipe bottom cover 122 to move upward to make the adjusting sleeve 1 move back, at this time the fixed sealing piece 234 is first opened to release the fertilizer liquid outward, as the irrigation pipe bottom cover 122 moves upward, the irrigation water outlet 123 is connected to the lowest water outlet 232 to outlet the irrigation water outward, the water pressure in the irrigation sleeve 22 is reduced to reset the electromagnetic block 31 driven by the supporting spring 32, when the water pressure is lower than the adsorption force of the electromagnetic block 31, the electromagnetic block 31 again adsorbs the irrigation pipe bottom cover 122 to move downward to the fixed sealing piece 234 to block, in this way, the liquid fertilizer pulse mode realizes interval time concentrated compensation, the rhizosphere concentration gradient is increased by multiple times, and it is suitable for diffusion absorption type element absorption.

[0022] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0023] While the embodiments of the application have been shown and described herein, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made to the embodiments without departing from the spirit and scope of the application, which is defined by the claims and their equivalents.

Claims

1. A soil trace element compensation device for regional nutrient deficiency of garden plants, comprising an adjusting sleeve (1), characterized in that: The outside of the regulating sleeve (1) is fixedly connected to a directional dial ring (11), and an irrigation inner tube (12) and a liquid fertilizer outer tube (13) are provided in the regulating sleeve (1). The top of the irrigation inner tube (12) is provided with an irrigation water interface (121), and the top of the liquid fertilizer outer tube (13) is provided with a liquid fertilizer interface (131). A directional partition (132) is fixedly provided in the middle of the liquid fertilizer outer tube (13), and a liquid fertilizer double-layer partition (133) is fixedly connected to the bottom of the directional partition (132). The liquid fertilizer double-layer partition (133) evenly divides the bottom space of the directional partition (132) and closes the directional dial ring. A flow port is provided at a directional partition (132) pointing to the dial ring (11); an underground pipe (2) is movably sleeved at the bottom of the regulating sleeve (1); an irrigation sleeve (22) and a liquid fertilizer sleeve (23) are provided in the underground pipe (2); the irrigation sleeve (22) is movably sleeved with the irrigation inner pipe (12); the liquid fertilizer sleeve (23) is movably sleeved with the liquid fertilizer outer sleeve (13); and a limiting block is provided at the sleeve connection; a single-layer partition plate (233) is fixedly connected to the liquid fertilizer sleeve (23); a fertilizer outlet is provided at the bottom of the underground pipe (2), and a lateral extension pipe (4) is movably installed through the fertilizer outlet.

2. The soil trace element compensation device for regional nutrient deficiency of garden plants according to claim 1, characterized in that: An electromagnetic block (31) is installed at the bottom of the irrigation sleeve (22), an adsorption block is provided at the bottom cover (122) of the irrigation pipe, an irrigation water outlet (123) is provided at the same height as the compartment on the upper side of the irrigation inner pipe (12), a plurality of water outlet pipe groups (231) of different heights are provided at corresponding positions in the liquid fertilizer sleeve (23), and a water outlet (232) is provided at the connection between the water outlet pipe group (231) and the outer wall of the liquid fertilizer sleeve (23).

3. The soil trace element compensation device for regional nutrient deficiency of garden plants according to claim 1, characterized in that: The top of the liquid fertilizer sleeve (23) is fixedly connected to a fixed sealing piece (234), the top of the inner irrigation tube (12) is fixedly connected to an inner spacer (124), the bottom of the liquid fertilizer sleeve (23) is fixedly connected to an irrigation double-layer partition (223), the bottom of the irrigation tube bottom cover (122) is provided with a corresponding through groove for the irrigation double-layer partition (223) to extend into the irrigation inner tube (12), and the inner spacer (124) is movably sleeved to the irrigation double-layer partition (223). 3), the irrigation water outlet (123) is fixedly connected to a sealing plate in the compartment facing the dial ring (11), and a through hole is opened at the bottom cover (122) of the irrigation pipe at the bottom of the other compartments. The electromagnetic block (31) is movably installed, and a support spring (32) is fixedly installed at its bottom. The top of the electromagnetic block (31) is fixedly connected to a piston plate (33), and a hydraulic opening (30) is opened at the bottom of the irrigation sleeve (22) facing away from the dial ring (11).

4. The soil trace element compensation device for regional nutrient deficiency of garden plants according to claim 1, characterized in that: A drill bit (3) is fixedly connected to the bottom of the underground pipe (2), and an insertion auxiliary ring (21) is fixedly connected to the outside of the upper side of the underground pipe (2).

5. The soil trace element compensation device for regional nutrient deficiency of garden plants according to claim 3, characterized in that: The single-layer partition plate (233) is movably sleeved into the inner layer of the liquid fertilizer double-layer partition plate (133); when the adjusting sleeve (1) is pulled up to the limit block, the single-layer partition plate (233) just comes out of the liquid fertilizer double-layer partition plate (133), and the inner partition plate (124) just comes out of the irrigation double-layer partition plate (223).

6. The soil trace element compensation device for regional nutrient deficiency of garden plants according to claim 1, characterized in that: The lateral extension tubes (4) correspond one to one with the compartments separated by the single-layer partition plate (233).

7. The soil trace element compensation device for regional nutrient deficiency of garden plants according to claim 3, characterized in that: The fixed sealing piece (234) is positioned opposite to the flow opening at the directional partition (132) and has the same shape. When the regulating sleeve (1) is moved downward as a whole until the directional partition (132) and the fixed sealing piece (234) are at the same height, a closure is formed.

Images