JPH07203915A - Foreign matter removing apparatus - Google Patents

Abstract

PURPOSE:To provide a foreign matter-removing apparatus capable of surely removing and recovering various foreign elements mixed in laver-preparing liquid obtained by mixing laver raw material with water. CONSTITUTION:Plural diaphragms 11, 12, 13 and 14 are arranged in a conduit body 10 to form conduit chambers 71, 72, 73 and 75 and hood bodies 11a, 12a, 13a and 14a are formed in the upper end body of these diaphragms 11, 12, 13 and 14 and net-like bodies 15 and 16 are arranged in the upper part of a recovering chamber 74 below these conduit chambers 71, 72, 73 and 75 and foreign elements mixed in a mixed liquid communicating the conduit body 10 are precipitated below. The precipitated foreign elements are caught in the net-like body to enable separation and recovery of the foreign elements.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter removing apparatus for removing foreign matter mixed in a seaweed formulation prepared by mixing a raw material for laver and water, and more particularly, a foreign matter capable of removing plural kinds of foreign matters having different characteristics. Regarding the removal device.

[0002]

2. Description of the Related Art Conventionally, an iron powder removing device in a seaweed producing device disclosed in Japanese Patent Laid-Open No. 57-159437 has been similar to this type of foreign substance removing device. This conventional iron powder removing device is shown in FIG. FIG. 4 is a schematic configuration perspective view of a conventional iron powder removing apparatus. In the figure, the conventional iron powder removing device has a plurality of partition plates 11, 12, 13, 18 at predetermined intervals so that the mixed liquid of laver and water flows through the gutter body 10 to overflow the mixed liquid. And the iron powder adsorbing tool 30 such as an electromagnet is detachably or fixedly attached to the upper part of the partition plate 13 among them.
The eaves plates 11a, 12a, 13a, and 18a are attached to the upper surface portions of 2, 13, and 18 so as to project to the upper side where the mixture flows.

Next, the operation of removing iron powder in the conventional apparatus based on the above construction will be described. First, when a mixed liquid of seaweed and water is supplied from the receiving pipe 90, the mixed liquid overflows the partition plates 11, 12, 13, and 18 in the gutter body 10 in order, and then is fed from the feeding port 91 to the rear stage side. It is directly supplied to the concentration adjusting tank.
When the partition plates 11, 12, 13, and 18 overflow, the impurities contained in the mixed liquid are separated from each other by the partition plates 11, 12, 13, and 18.
The foreign substances are removed from the mixed solution by being precipitated downward by the turbulent flow generated on the lower side of each of the eave plates 11a, 12a, 13a, 18a. Further, the mixed liquid overflowing the partition plate 13 is the iron powder adsorbing tool 3 stored under the eaves plate 13a.
When 0, magnetic substance impurities are adsorbed and removed from the mixed solution. FIG. 5 shows the distribution mode of the magnetic field induced by the iron powder adsorbing tool 30.

[0004]

Since the conventional foreign matter removing device is constructed as described above, each gutter chamber is formed by partitioning the inside of the gutter body 10 with partition plates 11, 12, 13, and 18. Even if contaminants fall and settle on the bottom surface of the, since the mixed solution is blocked by the partition plates 11, 12, 13, and 18 to generate a turbulent flow, the turbulent flow agitates the foreign matter and the mixed solution is again mixed. There was a problem that it mixes inside and flows down. Further, foreign matter having a low specific gravity cannot be removed because it flows down on the liquid surface. In addition, since the iron powder adsorbing tool 30 is disposed below the eaves board 13 in the partition plate 13, the magnetic force generated by the electromagnet or the like forming the iron powder adsorbing tool 30 becomes weak and a sufficient adsorbing force is exerted on the mixed liquid. However, there is a problem in that it cannot work against foreign matters inside and cannot remove foreign matters made of a magnetic material such as rust and iron scrap.

In particular, when the present apparatus is applied to a seaweed production apparatus, various contaminants are mixed in the seaweed mixed solution, so that the above problem becomes a greater problem.
The first foreign matter of these various foreign substances is straw dust, reed leaf dust, reed flower pieces, etc., which have a low specific gravity, when the seaweed algae are harvested. As the second foreign matter, there are some shrimp, fry, etc. that live in the seaweed protozoa and have a specific gravity of marine organisms close to 1. As the third foreign matter, there is a chemical substance such as vinyl having a specific gravity close to 1. The fourth foreign substance is a foreign substance having a large specific gravity, such as a shell, barnacle, or sand, which is mixed in the seaweed protozoa. As the fifth foreign matter, there are rust of machinery and metal such as iron powder which are generated during the process of producing seaweed and have a large specific gravity. When these contaminants are mixed in the seaweed mixed solution or the finished dry seaweed, there arises a problem that the commercial value as seaweed is significantly reduced or disappears.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a foreign matter removing apparatus capable of surely removing and collecting various contaminants mixed in a mixed liquid.

[0007]

A foreign matter removing apparatus according to the present invention is provided with a gutter body in which a mixed solution of a seaweed raw material and water is circulated, and a plurality of gutter bodies are arranged in the gutter body in a direction intersecting with a flowing direction of the mixed solution. Formed of a plate-shaped body, the upper end side of the plate-shaped body is lower than the liquid surface of the mixed liquid, and a gap is provided at the lower end side of at least one plate-shaped body of the plurality of plate-shaped bodies. A plurality of partition plates provided, and at the upper end side of at least one partition plate of the plurality of partition plates, an eaves plate formed to project to the upper side through which the mixed liquid flows, and the plurality of partition plates A porous body is provided on the lower surface of the gutter chamber to be formed, and a foaming portion is provided below the inside of the gutter body to foam bubbles.

Further, the foreign matter removing apparatus according to the present invention may include a hollow casing extending in the lateral direction of the gutter body at an upper end portion of any one of the plurality of partition plates, if necessary. An electromagnet or a permanent magnet is detachably inserted and housed in the hollow casing. Further, the foreign matter removing apparatus according to the present invention is such that an auxiliary magnetic body is arranged on the outer periphery of the hollow casing as needed. Further, the foreign matter removing apparatus according to the present invention, if necessary, forms a plurality of gutter chambers in a gutter body with a plurality of partition plates, and a porous body having a large hole and a porous body having a small hole on each lower surface of the gutter chambers And are provided.

Further, the foreign matter removing apparatus according to the present invention forms a plurality of gutter chambers in a gutter body with a plurality of partition plates, if necessary.
A foaming portion that foams large bubbles and a foaming portion that foams small bubbles are disposed in the lower surface of any of the plurality of troughs in the flow direction of the mixed liquid. Further, the foreign matter removing device according to the present invention, if necessary, a blind or a bubble stopping plate that hangs from above the partition plate on the rear side of the plurality of partition plates to above the liquid surface of the mixed liquid, and the blind. The collecting unit sucks and collects the foreign matters adhering to the sheet or the bubbles accumulated in the bubble stop plate.

[0010]

In the device of the present invention, a plurality of partition plates are arranged in the gutter body to form a gutter chamber, an eaves body is formed at the upper end of the partition plate, and a porous body is provided in a space area below the gutter chamber. Since it is arranged that the contaminants mixed in the mixed liquid flowing through the trough are precipitated downward by the eaves, the precipitated contaminants can be trapped in the porous body, and the reliable contaminants can be obtained. Can be separated and collected. Further, in the device of the present invention, since the hollow casing extending in the lateral direction of the partition plate is formed and the electromagnet or the permanent magnet is housed in the hollow casing so as to be inserted therethrough, the rust contained in the mixed liquid is It is possible to reliably adsorb and collect magnetic substance contaminants such as iron and iron scraps.

Further, in the device of the present invention, since the auxiliary magnetic material is arranged on the outer periphery of the hollow casing, a magnetic field can be widely distributed with respect to the mixed liquid in the trough, and a strong magnetic force is exerted. The magnetic substance such as rust and iron scrap mixed in the mixed liquid is absorbed by. Further, in the device of the present invention,
Since a porous body having a different hole size is arranged on each lower surface of a plurality of gutter chambers formed by a plurality of partition plates, it is possible to reliably capture and collect impurities of different sizes. .

Further, in the device of the present invention, since bubbles having different sizes are generated from the lower side of any of the plurality of troughs formed by the plurality of partition plates, contaminants having different sizes are used. Each can be reliably captured and collected.
Further, in the device of the present invention, a screen or a bubble stop plate that hangs down to the liquid surface is provided in the vicinity of the rear side partition plate, and a contaminant that adheres to the screen or a bubble that is stored in the bubble stop plate is collected by the recovery unit. Since it is sucked and collected, it is possible to surely collect the floating contaminants in combination with the floating action of the contaminants caused by the bubbles generated from the bubble portion.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A foreign matter removing apparatus according to an embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of the entire structure of the apparatus of this embodiment, and FIG.
FIG. 3 is a schematic explanatory view of the production including the apparatus of the present embodiment until drying, and FIG. 3 is a detailed explanatory view of the iron powder adsorption portion in the apparatus of the present embodiment.

In each of the drawings, in the foreign matter removing apparatus according to the present embodiment, the seaweed preparation liquid 800 in which the seaweed raw material and water are mixed is supplied from the preparation machine 80 through the receiving pipe 90 to the concentration adjusting tank 81 in the subsequent stage. A gutter body 10 which is sent out through a feeding port 91 and serves as a casing of the apparatus, and the gutter body 10 is provided with the seaweed preparation 8
It is arranged so as to cross the direction of circulation of 00,
Partition plates 11, 12, 13, 14 for forming four gutter chambers 71, 72, 73, 75 in the gutter body 10, and a first mesh body 15 arranged on the bottom surface of the gutter chamber 72 and having a large mesh. A second mesh body 1 arranged on the bottom surface of the gutter chamber 73 and having a small mesh
6, the iron powder adsorbing portion 3 extending over the entire length of the partition plate 13 on the upper end side of the partition plate 13, and the first mesh body 15
And a foaming part 4 for foaming bubbles from below the second mesh body 16, and to the liquid level of the seaweed preparation 800 on the subsequent stage side of the iron powder adsorbing part 3 (the downstream side of the flow of the seaweed preparation 800, the same applies hereinafter). It is a structure provided with the collection part 5 which has the drooping-shaped body 52.

The partition plate 11 is provided with an eaves body 11a whose upper end portion is bent to the front side (upstream side of the seaweed preparation 800, the same applies hereinafter), and the lower end portion is brought into contact with the inner bottom surface of the gutter body 10. Formed. Further, the partition plate 12 is provided with an eaves body 12a similarly to the partition plate 11, and the lower end portion thereof has a gutter body 10a.
Is formed to have a gap of a predetermined width with respect to the inner bottom surface of the. Further, the partition plate 13 has an iron powder adsorption portion 3 at the upper end portion.
And a lower end portion of the gutter body 10 similar to the partition plate 12 is formed.
Is formed to have a gap of a predetermined width with respect to the inner bottom surface of the. The partition plate 14 is similar to the partition plate 11 in the eaves 14
a is formed, and the lower end portion is formed in contact with the inner bottom surface of the gutter body 10. A recovery chamber 74 that communicates laterally is formed in the gap between the lower ends of the partition plates 12 and 13.

Each of the partition plates 11, 12, 13, 14,
Is formed so that the upper end thereof is lower than the liquid surface of the seaweed preparation 800, and the eaves plate 11a is formed on the upper end.
12a, 14a and the iron powder adsorbing part 3 from the seaweed preparation 800
Are formed to overflow. Each partition plate 11, 1
Each of 2, 13, and 14 is preferably formed of a nonmagnetic material such as austenitic stainless steel or plastic, and the surface is preferably formed of a corrosion-resistant material. That is, since the iron powder adsorbing portion 3 is arranged in the vicinity of the partition plates 11, 12, 13, and 14, this magnetic influence is eliminated and the magnetic field induced by the iron powder adsorbing portion 3 is further improved. This is because it is widely generated in the seaweed preparation 800.

The iron powder adsorbing portion 3 has a hollow casing 31 extending over the entire lateral length of the partition plate 11, and the hollow casing 31.
The magnet body 32 is detachably inserted and accommodated in the inside of the housing, and the auxiliary magnetic body 33 formed of a ferromagnetic metal is detachably extended over the entire upper surface of the hollow casing 31. The auxiliary magnetic body 33 is preferably made of a ferromagnetic material such as steel and plated with nickel to prevent corrosion. The foaming section 4 is arranged below the first mesh body 15 and foams a slightly larger bubble, and the former foaming section 42 is arranged below the second mesh body 16 and foams a slightly smaller bubble. The rear foaming section 43 and the front and rear foaming sections 42, 4
3 is a configuration including a foaming control unit 41 for controlling the foaming amount.

The collecting section 5 has a plurality of blinds 52 hanging down to the surface of the seaweed preparation 800, and a plurality of the blinds 52 housed in a cylindrical body, respectively, and positioned slightly higher than the liquid level. A plurality of suction portions 53 arranged so as to hang down, a discharge portion 51 formed of a hollow cylindrical body communicating with each suction portion 53, and a contaminant from the hollow cylindrical body of the discharge portion 51 together with air. And a blower 54 for discharging.

Next, the operation of removing impurities according to the present embodiment based on the above configuration will be described. First, as a premise, the seaweed raw algae is minced and washed with water to produce a seaweed raw material. Mixer 8 with this seaweed raw material and water
0 is mixed at a predetermined ratio to produce the seaweed preparation liquid 800. The seaweed preparation liquid 800 is supplied to the foreign matter removing device 1 of the present apparatus through the receiving pipe 90. The supplied seaweed preparation 800 flows into the first gutter chamber 71, and then the partition plate 1
One overflows on the eaves board 11a and flows into the second gutter chamber 72. When the seaweed preparation liquid 800 that has flowed into the second gutter chamber 72 circulates in the recovery chamber 74 formed below the partition plates 12 and 13 and becomes full, the second and third gutter chambers 72 and 7 are further filled.
Fill 3 The seaweed formulation liquid 800 filled in the second and third gutter chambers 72 and 73 overflows above the partition plates 12 and 13 and flows into the fourth gutter chamber 75.

In this way, each gutter chamber 71, 72, 73, 75
When the recovery chamber 74 is completely filled with the seaweed preparation liquid 800, the seaweed preparation liquid 800 overflows from the upper portions of the partition plates 11, 12, 13, and 14 and flows into the fifth gutter chamber 76 to sequentially flow the seaweed preparation liquid 800. Becomes In the course of this distribution, the eaves plate 11a of the partition plate 11 causes the foreign matter having a large shape and large specific gravity mixed in the seaweed formulation liquid 800 to settle down to prevent the overflow passage. The foreign substances that have overflowed the partition plate 11 flow into the second gutter chamber 72, and in the second gutter chamber 72, the front-stage foaming section 42 foams large bubbles from below to cause a large amount of straw debris and reeds to some extent. Debris, reed flowers, relatively small shrimps, fry, vinyl fragments, and other light-weight impurities are raised upwards.

In the second gutter chamber 72,
Relatively large shrimp, fry, etc. where the specific gravity of marine organisms is close to 1, specific substances such as vinyl that have a specific gravity close to 1, heavy shells, barnacles, sand, etc. or machinery rust, iron If metals such as powder fall downward, the first
It passes through the mesh body 15 and is captured in the storage chamber 74. The various contaminants thus captured are sequentially moved laterally in the storage chamber 74 and finally reliably stored in the closed area 74a at the end. When the storage chamber 74 is moved laterally, the first and second mesh bodies 15 and 16 are present on the upper side, so that the upward movement can be suppressed. In addition, the stitch body 15,
The same effect can be obtained by using a perforated plate member 16 such as a punched plate having different or the same hole size.

Contaminants that overflow the partition plate 12 from the second gutter chamber 72 and mix into the third gutter chamber 73 are treated with the seaweed preparation liquid by the iron powder adsorbing portion 3 protruding to the upper side of the partition plate 13. 80
The contaminants mixed in 0 are settled downward to prevent the overflow passage. Further, like the second gutter chamber 72, the latter-stage foaming part 43 foams small bubbles from below in the third gutter chamber 73 to cause specific gravity of fine straw debris, reed leaf debris, reed flower pieces, and the like. Light contaminants and relatively small shrimp, fry,
Lift a piece of vinyl upwards. In addition, in the third trough 73, when various fine foreign substances fall downward, they pass through the second mesh body 15 and are trapped in the storage chamber 74. The captured foreign matters are stored in the storage room 74.
It moves laterally inside and is securely stored in the closed region 74a at the end. When the storage chamber 74 is moved laterally, the first and second mesh bodies 15 and 16 are present above the storage chamber 74. Therefore, even if a turbulent flow occurs or the flow velocity changes, the upward movement is performed. You can suppress the soaring.

Further, the partition plate 1 is separated from the third gutter chamber 73.
Contaminants that overflow 3 and try to flow into the fourth gutter chamber 75 are captured or collected by the iron powder adsorbing section 3 and the collecting section 5. In the iron powder adsorption portion 3, the auxiliary magnetic body 33 having ferromagnetism is magnetized by the magnetic flux induced by the magnet body 32, and the magnetization is spread laterally as shown in FIG. Since it can be widely distributed inside, the magnetic substance such as rust and iron scrap mixed in the seaweed formulation liquid 800 can be adsorbed to the auxiliary magnetic substance 33 due to the strong magnetic force. The foreign matter once adsorbed prevents the foreign matter from coming off due to the strong magnetization of the auxiliary magnetic body 33. Further, in the recovery unit 5, since the bubbles foamed by the foaming units 42 and 43 in the former stage and the latter stage adhere to various contaminants and float on the liquid surface of the seaweed formulation liquid 800, the contaminants thus floated up. Is attached to the cord-like body 52, and the attached contaminants are taken out from the suction section 53 together with the air sucked by the blower 54.
Be recovered.

In place of the cord 52, a stop plate for stopping only the air bubbles floating in the seaweed mixture passing therethrough is provided at the rear side of the suction portion 53 to store the air bubbles, and the suction portion 53
It may be sucked in and discharged. In this way, since various impurities are successively collected over a plurality of stages, the impurities in the seaweed preparation 800 can be reliably separated and collected. The seaweed preparation liquid 800 from which the contaminants have been collected is directly supplied to the concentration adjusting tank 81 from the supply port 91. The concentration adjustment of the seaweed preparation 800 in the concentration adjusting tank 81 is performed based on the detection result of the concentration detecting unit 21.
Controls the water supply pump 83 or the drainage pump 84 to perform feedback control to a target concentration.

The adjusted and controlled seaweed preparation 800 is supplied to the paper making section 100 through the outlet tube 89 to be made into paper leaf-like seaweed, which is dried in the drying section 200 to produce finished dry seaweed. It 80 seaweed formulation liquid left over during this papermaking operation
Reference numeral 0 denotes the first gutter chamber 7 of the foreign matter removing device 1 via the recovery pipe 92.
1 is supplied again. In the process of producing seaweed as described above, the apparatus of this embodiment can remove various impurities at the stage of the seaweed preparation 800.

In the above embodiment, the front and rear foaming sections 42 and 43 are configured to generate two kinds of bubbles, large and small. However, the foaming amount of each of the front and rear foaming sections 42 and 43 is controlled by the foaming control section. It can be changed by 41. Further, the top plate 17 of the storage chamber 74 is detachably attached, and the storage chamber 7 is removed by removing the top plate 17.
It is possible to clean the foreign matters collected in 4.

Further, in the above-mentioned embodiment, it is arranged in the middle of the blender 80 and the concentration adjusting tank 81, but it may be arranged integrally with the concentration adjusting tank 81 or in the concentration adjusting tank 81. Further, the concentration adjusting tank 81 and the papermaking section 100
It may be configured to be provided in the middle of.

[0028]

As described above, in the device of the present invention,
Since a gutter chamber is formed by arranging a plurality of partition plates in the gutter body, an eaves body is formed at the upper end portion of the partition plate, and a porous body is arranged in a space area below the gutter chamber. Impurities mixed in the mixed liquid flowing through the gutter can be precipitated downward by the eaves, and the precipitated impurities can be captured in the porous body.
This has the effect of reliably separating and collecting impurities.
Further, in the device of the present invention, since the hollow casing extending in the lateral direction of the partition plate is formed and the electromagnet or the permanent magnet is housed in the hollow casing so as to be inserted therethrough, the rust contained in the mixed liquid is This has the effect of reliably adsorbing and collecting magnetic substance impurities such as iron and iron scraps. Further, in the device of the present invention, since the auxiliary magnetic body is arranged on the outer periphery of the hollow casing, a magnetic field can be widely distributed with respect to the mixed liquid in the gutter body, and the mixed liquid is generated by a strong magnetic force. It has the effect of adsorbing magnetic substances such as rust and iron scrap mixed in the. . Further, in the device of the present invention, since the porous bodies having different hole sizes are arranged on the respective lower surfaces of the plurality of gutter chambers formed by the plurality of partition plates,
This has the effect that contaminants of different sizes can be reliably captured and collected. . Further, in the device of the present invention,
Since bubbles having different sizes are generated from the lower side of the plurality of gutter chambers formed by the plurality of partition plates, it is possible to reliably capture and collect foreign matters having different sizes. Further, in the device of the present invention, a blind-shaped member that hangs down to the liquid surface is provided in the vicinity of the partition plate on the rear stage side, and since the collecting unit sucks and collects the contaminants adhering to the blind-shaped member, the bubble part Combined with the floating action of foreign matters by the generated bubbles, the floating foreign matters can be reliably collected.

[Brief description of drawings]

FIG. 1 is a perspective view of the entire configuration of a foreign matter removing device according to an embodiment of the present invention.

FIG. 2 is a schematic explanatory view of the production from seaweed preparation to paper making / drying including the apparatus of the embodiment shown in FIG.

FIG. 3 is a detailed configuration diagram of an iron armor suction unit in the embodiment apparatus shown in FIG.

FIG. 4 is an overall block configuration diagram of a conventional device.

FIG. 5 is a detailed configuration diagram of an iron armor suction tool in a conventional device.

[Explanation of symbols]

 2 Concentration control unit 3 Iron bar adsorption unit 4 Foaming unit 5 Collection unit 8 Concentration adjustment unit 10 Gutter body 11, 12, 13, 14 Partition plate 11a, 12a, 14a Eave plate 15, 16 (first and second) mesh Body 17 Top plate 21 Concentration detection part 41, 42 Foaming part 71, 72, 73, 75 (before and after) Foaming part 83 Water supply pump 84 Drain pump 100 Paper making part 111 Set value generator 200 Drying part 800 Nori compound

Claims (6)

[Claims] 1. A gutter body in which a mixed solution of seaweed raw material and water is circulated, and a plurality of plate-shaped bodies arranged in the gutter body in a direction intersecting with a flow direction of the mixed solution. A plurality of partition plates whose upper end side is lower than the liquid surface of the mixed liquid and which is arranged with a gap on the lower end side of at least one or more plate-like bodies among the plurality of plate-like bodies; An eaves plate formed on the upper end side of at least one of the partition plates so as to project to the upper side through which the mixed liquid flows, and a porous body disposed on the lower surface of the gutter chamber formed by the plurality of partition plates. And a foaming part disposed below the inside of the gutter and foaming bubbles. 2. The foreign matter removing device according to claim 1, wherein a hollow casing extending in a lateral direction of the gutter is formed at an upper end of any one of the plurality of partition plates, and the hollow casing is provided inside the hollow casing. A foreign matter removing device, wherein an electromagnet or a permanent magnet is detachably inserted and stored. 3. The foreign matter removing device according to claim 2, wherein an auxiliary magnetic body is provided on the outer periphery of the hollow casing. 4. The foreign matter removing device according to each of claims 1 to 3, wherein a plurality of gutter chambers are formed in the gutter body by the plurality of partition plates, and the mixed liquid is circulated on each bottom surface of the plurality of gutter chambers. A foreign matter removing device characterized in that a porous body having large holes is arranged on the upstream side in the direction, and a porous body having small holes is arranged on the downstream side. 5. The foreign matter removing device according to claim 1, wherein a plurality of gutter chambers are formed in the gutter body by the plurality of partition plates, and a foaming portion that foams large bubbles and a small bubble are formed. A foreign matter removing device, which is provided with a foaming part for foaming. 6. The foreign matter removing device according to any one of claims 1 to 5, wherein among the plurality of partition plates, a blind-shaped member that hangs from above a partition plate on a rear stage side to a liquid surface of the mixed liquid or A foreign matter removing device, comprising: a bubble stop plate; and a collection unit that sucks and collects foreign matters adhering to the cord-like body or bubbles stored in the bubble stop plate.