JP2019015008A - Foreign matter removing device - Google Patents

Abstract

To provide an apparatus for detecting and removing foreign matter in raw materials to minimize unnecessary discharge of high quality raw materials that are not foreign matters but are discharged simultaneously with them.SOLUTION: What is claimed is an apparatus for inspecting at an inspection section a foreign matter in a raw material having fluidity and transported by a transporting section to partially remove the raw material containing a foreign matter, the apparatus comprising: a fall section where the raw material inspected at the inspection section falls; a foreign matter sorting section having course changing means for changing a course of the raw material by contacting the raw material falling through the fall section; a discharge section for discharging each of the raw materials whose courses have been changed by the course changing means; a control section for controlling an operation of contacting the raw material having fallen at the course changing section at a timing when the foreign matter of the raw material falls whose contact position with the course changing means is detected by the inspection section.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for detecting and removing foreign substances contained in raw materials in the production process of food, beverages, medical products, paper, etc., and in particular, to improve the efficiency of the process of removing foreign substances. It is.

  In the manufacturing process of food, beverages, medical products, paper, etc., various materials according to the object to be produced are blended in the raw material before commercialization, and after the process of mixing, heating, molding, cooling, etc. The product is manufactured. Among these, when a product is manufactured based on a liquid raw material, foreign substances contained in the raw material cause defective products and are removed by various methods.

  As a specific example of a method for removing foreign substances contained in raw materials, a paper material used in a paper manufacturing process will be described. The paper material used as the raw material of the paper is a state in which water, fibers, chemicals, etc. are dispersed. For example, if the foreign material is different in size from the fiber, it can be removed by filtering the screen, and the specific gravity is Different foreign matters can be removed by the centrifugal force of the sentry cleaner, and magnetic foreign matters can be removed by placing a magnet on the reflector. In addition, the method of removing foreign substances using filtration, centrifugal force, and magnetism is used not only in the raw material of paper but also in the manufacturing field described above.

  However, according to the above-described method for removing foreign matter, there is a problem that it cannot be removed if the specific gravity, size, magnetism, and other characteristics of the foreign matter are the same as those of high-quality fibers in the paper. Further, the above-described method for removing foreign matter has a problem that foreign matter cannot be removed when the concentration of the paper stock increases. This is because foreign matters are less likely to be separated from the fibers.

  As an example of a method for avoiding this problem, an apparatus that detects and removes a foreign substance using an optical sensor has been proposed (for example, unlike a method of removing a foreign substance using a difference in specific gravity or size) (for example, Patent Document 1). According to the foreign matter removing apparatus of Patent Document 1, a foreign matter detector that detects the presence or absence of foreign matter in a raw material provided in a flow path through which a stock flows, a determination unit that determines whether or not a foreign matter is present, and a branch point Switching means for switching the flow path through which the stock flows by giving an open command or a close command to the outlet control valve and the discharge control valve before reaching the flow rate. The foreign matter can be removed without being affected by the concentration of.

JP 62-170596 A

  However, according to Patent Document 1, foreign substances in raw materials are detected and removed, but by using a valve for removal, all the raw materials in the flow path directly connected to the valve after the branch point are used by the valve. Since switching between opening and closing is performed, the mechanism is such that a large amount of raw material is discharged when the foreign matter is removed. For this reason, the foreign matter removing apparatus of Patent Document 1 has a problem that a large amount of high-quality raw materials is discharged, resulting in a decrease in manufacturing efficiency.

  The present invention solves the above-mentioned problems, and in an apparatus for detecting and removing foreign substances in raw materials, an apparatus for minimizing unnecessary discharge of high-quality raw materials other than foreign substances discharged simultaneously with the foreign substances. provide.

  A foreign matter removing apparatus according to the present invention includes a transport unit that transports a fluid raw material in a predetermined direction, and an inspection unit that includes a predetermined inspection unit for detecting foreign matter with respect to the raw material transported by the transport unit. And a drop part where the raw material inspected by the inspection part falls, and a path change means for changing the course of the raw material by being in contact with the falling raw material, provided at a position where the drop part can be contacted with the raw material dropping. A path based on the information provided by the foreign matter sorting unit, the discharge unit that is provided below the foreign matter sorting unit and discharges the raw material whose course has been changed by the course changing unit, and the information that the foreign matter has been detected by the inspection unit. It is characterized by comprising at least a control unit for controlling the operation of the course changing unit to contact the falling raw material at the timing when the foreign matter detected by the inspection unit falls at the position of the changing unit that contacts the raw material. That.

  In the foreign matter removing apparatus of the present invention, the course changing means is constituted by a member that contacts the falling raw material, and the member has an effective diameter narrower than the range of the falling raw material.

  The foreign matter removing apparatus of the present invention includes a course changing means for changing the direction of discharge by contacting the raw material, thereby reducing the discharge of high-quality raw materials and efficiently removing foreign matters. .

It is the schematic of the foreign material removal apparatus of this invention. It is a block diagram of the foreign material removal apparatus of this invention. It is a figure which shows the structure of a conveyance part. It is a figure which shows the structure of the partition provided in a conveyance part. It is a block diagram of an inspection part. It is a figure which shows the structure of a dropping means. It is a figure which shows the structure of a course change means. It is a figure which shows the structure of the inclined surface in the member which comprises a course change means. It is a figure which shows the example of the member which comprises a course change means. It is a figure which shows operation | movement of a course change means. It is a figure which shows another arrangement | positioning of a course change means. It is a block diagram of a control part. It is a figure which shows the structure of a reduction | restoration part.

  DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below, and includes various other embodiments within the scope of the technical idea described in the scope of claims.

  FIG. 1 is a schematic view of a foreign matter removing apparatus (M) of the present invention. The outline | summary of the foreign material removal apparatus (M) of this invention is demonstrated using FIG.

  The foreign matter removing apparatus (M) of the present invention includes a transport unit (1) for transporting raw materials, an inspection unit (10) for inspecting raw materials transported by the transport unit (1), and raw materials inspected by the inspection unit (10). Falling part (20) where the material falls, foreign matter sorting part (30) for sorting out foreign substances from the raw material falling on the falling part (20), discharge part (40) for discharging the raw material containing foreign substances and the raw material not containing foreign substances, respectively At least a control unit (not shown) for controlling the timing of discharging foreign matter by the foreign matter sorting unit (30) is provided. The raw material which is the target of the foreign matter removing apparatus (M) of the present invention is a fluid liquid material, and the liquid contained in the raw material is not particularly limited to water, oil, alcohol and the like. In addition, the material mixed or dissolved in the raw material is not particularly limited, and includes various materials according to the object to be manufactured in the technical field described above. Further, the raw material is not a mixture or solution of various materials, but may be composed of only the liquid described above. The detailed configuration and operation of each part of the foreign matter removing apparatus (M) will be described below with reference to the block diagram shown in FIG.

(Transport section)
A conveyance part (1) is a conveyance path of the raw material provided in order to inspect a raw material while conveying a raw material, and a raw material is conveyed by the conveyance force using a pump, a motor, etc. which are not shown in figure. A specific configuration of the conveyance path is a structure of a pipe or a weir, and a material such as a metal such as iron or stainless steel or a plastic material such as vinyl chloride is used.

  In FIG. 1, the transport unit (1) shows a state in which the raw material is transported in the horizontal direction. However, in the present invention, the transport unit (1) may transport the raw material in a state of falling in the vertical direction. The conveyance unit (1) may be inclined with reference to a state in which the conveyance unit (1) shown in Fig. 1 is provided horizontally (not shown). In the following description, as shown in FIG. 1, a description will be given by taking as an example a transport unit (1) that transports raw materials in the horizontal direction.

  Since the inspection accuracy of the foreign matter by the inspection unit (10) varies depending on the flow rate of the raw material flowing per unit area of the transport unit (1), it is necessary to appropriately adjust the flow rate of the raw material passing through the inspection unit (10). A specific example will be described with reference to FIG. FIG. 3A is a perspective view in the case where the conveyance unit (1) is constituted by a weir, and as shown in FIG. 3A, at the position passing through the inspection unit (10), the width of the weir ( In the case of W1), assuming that the same amount of raw material flows through the weir shown in FIG. 3B on the basis of the condition that the raw material is conveyed at the height of the liquid level (H1), the width (W2) of the weir is The liquid level height (H2) becomes lower by an amount wider than the width (W1) of the weir shown in 3 (a). As shown in FIG. 3 (b), when the liquid level (H2) is low, the amount of components that cause noise in the detection of foreign matter such as moisture and raw materials in the raw material is reduced. Detection accuracy can be increased.

  As another method for adjusting the flow rate of the raw material flowing per unit area of the inspection unit (10), the conveyance unit (1) is inclined with reference to the state where the conveyance unit (1) shown in FIG. 1 is provided horizontally. Alternatively, the above-described method may be used by adjusting the number of rotations of the pump and the motor.

  Moreover, it is preferable to provide a partition (2) in the width direction as shown in FIG. 4 so that the foreign matter does not move in the width direction of the transport section (1) after being inspected by the inspection section (10). This is because the position of the foreign matter is regulated before the foreign matter is removed by the foreign matter sorting section (30) described later.

(Inspection unit)
As shown in FIG. 5, the inspection unit (10) includes an inspection unit (11) for inspecting a foreign substance and a transmission unit (12) for outputting a result of the inspection to a control unit (50) described later. In the present invention, the inspection means (11) utilizes a method of capturing and processing an image under reflected light or transmitted light, absorption characteristics or transmission characteristics of foreign matter with respect to radiation such as infrared rays, ultraviolet rays, X-rays, and γ rays. Thus, there are methods using various sensors to detect, and these methods may be appropriately used according to the object of the foreign matter from among known techniques. The transmission means (12) transmits a foreign object detection signal to the control unit (50) when the foreign object is detected. Here, the signal is transmitted when a foreign object is detected, but the reverse method of transmitting a signal only when it is not detected in consideration of fail-safe may be used. The same applies to the transmission of the control unit (50) described later.

(Falling part)
The dropping unit (20) is a conveyance path through which the raw material is dropped after being conveyed by the conveyance unit (1) and inspected by the inspection unit (10). As shown in FIG. 6A, the dropping unit (20) may be dropped as it is with the momentum of the raw material being conveyed by the conveying unit (1), and there is no need to provide a member such as a pipe. Moreover, what is necessary is just to continue dropping as it is, when a conveyance part (1) conveys in the state which drops a raw material. Temporarily, although the dropping part (20) is good also as a structure which consists of members, such as piping (not shown), the position where the course change means (31) mentioned later contacts a raw material covers raw materials with members, such as piping. It must be left open without any problems.

  As described above, when the partition (2) is provided in the width direction in the transport unit (1), the partition (21) shown in FIG. May be further provided.

(Foreign matter distribution part)
As shown in FIG. 2, the foreign matter allocating section (30) includes a course changing means (31) and a receiving means (32).

(Receiving means, course changing means)
The receiving means (32) receives a foreign object detection signal from a transmitting means (53) of the control section (50) described later, and based on that, the course changing means (31) is operated by a driving means (not shown), Sort foreign objects. As shown in FIG. 7, the course changing means (31) is configured by a member (31 a) provided at a position where it can come into contact with the raw material dropping the dropping portion (20).

  The member (31a) has a three-dimensional shape such as a rod shape, a plate shape, or a cylindrical shape, and its cross-sectional shape is not particularly limited, such as a triangle, a square, a rectangle, an ellipse, or a circle. Note that the tip of the member (31a) on the side in contact with the raw material has a curved surface shown in FIG. 8 (a) or FIG. 8 (b) in order to increase the inductivity of the raw material containing the foreign material when the foreign material described later is distributed. It is preferable to provide a linear inclined surface shown in FIG. The material of the member (31a) is not particularly limited as long as it is not deformed by the weight of the falling raw material, and is made of metal, plastic or the like.

  The effective diameter (S), which is a range in which the member (31a) contacts the falling raw material and changes the course, may correspond to the entire falling raw material, as shown in FIG. 9 (a), As shown in FIG. 9B, it may correspond to a part of the falling raw material. Note that the member (31a) shown in FIGS. 9 (a) and 9 (b) is different from the arrangement of the member (31a) shown in FIG. However, the member (31a) of the present invention may be provided at any position.

  In the present invention, the effective diameter (S) of the member (31a) is the width in the direction perpendicular to the direction in which the member (31a) contacts the falling raw material at the portion where the member (31a) contacts the falling raw material. That is. If the direction in which the member (31a) is in contact with the raw material in FIG. 9 (a) is denoted by reference numeral (V1), the width (W) of the member (31a) in the orthogonal direction (V2) becomes the effective diameter (S). In FIG. 9A, the effective diameter (S) of the member (31a) corresponds to the entire range of the falling raw material. In the present invention, the range of the raw material that falls is the width of the raw material that falls in the direction (V2) orthogonal to the direction (V1) in which the member (31a) contacts the raw material. The same applies to the member (31a) shown in FIG. 9 (b), and the width of the member (31a) in the orthogonal direction (V2) when the direction in which the member (31a) is in contact with the raw material is denoted by reference numeral (V1). (W) is the effective diameter (S), and in FIG. 9B, the effective diameter (S) of the member (31a) corresponds to a part of the range of the raw material that falls.

  However, in the case of the configuration of FIG. 9B, it is necessary to control the position where the member (31a) contacts the raw material in accordance with the position where the foreign matter falls. The structure for controlling the position of the member (31a) in this case is possible by a known mechanism for controlling the position. For example, the member (31a) is connected to a guide rail or a rack and pinion gear (not shown) and is movable. The member (31a) can be fixed and moved on the fixed member by the power of a motor (not shown).

  When the effective diameter (S) of the member (31a) corresponds to a part of the falling raw material, a plurality of members (31a) may be provided as shown in FIG. 9 (c). Note that FIG. 9C is an example in which three members (31a) are provided. In this case, any of the three members (31a) that can come into contact with the position where the foreign object falls is selected. You can contact them. Hereinafter, the operation of the course changing means (31) will be described.

  When the foreign matter detection signal is not received by the receiving means (32), as shown in FIG. 10 (a), although the course changing means (31) is located at a position where the raw material is not touched, the receiving means (32) When the foreign object detection signal is received, the course changing means (31) operates so as to touch the raw material as shown in FIG. 10 (b). In the case of FIG. 10 (b), an interfacial tension acts between the raw material and the course changing means (31), instantaneously changing the course of the raw material falling on the dropping section (20), and a discharge section (40) described later. Accordingly, the raw material containing foreign substances and the raw material not containing foreign substances are separately discharged. The amount of contact of the course changing means (31) with the falling raw material, specifically, the amount of the member (31a) entering the raw material falling in the direction (V1) shown in FIG. What is necessary is just to adjust suitably according to the flow volume of the raw material to fall, the shape of a member (31a), and a magnitude | size.

  The foreign matter removing apparatus of Patent Document 1 changes the route by switching the outlet control valve and the discharge control valve after the branch point, and thus it takes time and a lot of good quality raw materials are discharged. Since the course is changed instantaneously depending on the presence or absence of contact of the means (31), unnecessary discharge of raw materials other than foreign matters can be suppressed. Further, the foreign matter removing apparatus of Patent Document 1 distributes discharge to all the raw materials in the flow path directly connected to the valve. In the present invention, the course changing means (31) is shown in FIG. In the case of the configuration shown in FIG. 9C, since only the part where the member (31a) contacts the part of the falling raw material is discharged as the raw material containing the foreign material, unnecessary discharge of the raw material is further suppressed. be able to.

  FIG. 10 shows an example in which the course changing means (31) operates in the horizontal direction with respect to the raw material falling on the dropping portion (20), but as shown in FIG. 11, the course changing means (31) May be provided at a position in contact with the raw material from an oblique direction.

(Discharge part)
As shown in FIG. 2, the discharge section (40) includes a high quality raw material discharge means (41) and a removed raw material discharge means (42). As shown in FIG. 10A, the high-quality raw material discharging means (41) discharges the raw material that has fallen without contact with the course changing means (31), and the removed raw material discharging means (42) As shown in FIG. 10B, when the course changing means (31) contacts the raw material, the raw material including the foreign substance whose course has been changed is discharged. The high quality raw material discharging means (41) and the removed raw material discharging means (42) may be storage layers for storing raw materials, or members such as piping for transporting to the next process.

(Control part)
As shown in FIG. 12, the control unit (50) includes a control unit (51), a reception unit (52), and a transmission unit (53). The receiving unit (52) of the control unit (50) receives the foreign object detection signal transmitted from the transmission unit (12) of the inspection unit (10), and changes the course to the falling raw material based on the received foreign object detection signal. A signal for contacting the means (31) is transmitted from the transmitting means (53). The transmission from the transmission means (53) to the foreign matter sorting section (30) is controlled by the control means (51), and the control means (51) is detected by the inspection section (10). The time until the foreign substance moves to the position where the course changing means (31) contacts the falling raw material and the response time of the operation of the course changing means (31) are calculated, and the course changing means (31) is at an appropriate timing. The transmission by the transmission means (53) is controlled so as to operate.

  In the case where the course changing means (31) has the configuration shown in FIGS. 9B and 9C, control for bringing the member (31a) into contact with the position of the falling foreign matter is also required. Therefore, when the course changing means (31) is configured as shown in FIGS. 9 (b) and 9 (c), the transmission means (12) of the inspection unit (10) detects foreign matter together with the foreign matter detection signal. The received position information is transmitted to the control unit (50) and received by the receiving means (52) of the control unit (50).

  When the course changing means (31) has the configuration shown in FIG. 9B, the control means (51) places the member (31a) at the position of the falling foreign matter based on the received positional information of the foreign matter. A movement amount for movement is calculated, and a signal for driving the motor according to the calculated movement amount is transmitted by the transmission means (53) to the course changing means (31). Further, when the course changing means (31) is configured as shown in FIG. 9 (c), it corresponds to the position of the falling foreign matter among the plurality of members (31a) based on the received positional information of the foreign matter. The information of the member (31a) to be operated is transmitted to the course changing means (31) by the transmitting means (53).

  The above-described configuration is the basic configuration of the foreign matter removing apparatus (M) of the present invention. In order to reduce the amount of foreign matter discharged, the quality raw material indicated by the broken line in FIG. 2 is reduced. A reduction unit (60) may be provided. Hereinafter, the configuration of the reduction unit (60) will be described.

(Reduction part)
As shown in FIG. 13A, the reduction unit (60) is a part that processes the raw material including the foreign matter discharged by the removed raw material discharge unit (42) to reduce the high-quality raw material. Specifically, as shown in FIG. 13 (b), the reduction unit (60) includes the above-described transport unit (1), inspection unit (10), drop unit (20), foreign matter distribution unit (30), discharge The parts (40) and the control part (50) are composed of parts having functions equivalent to each other, and for convenience of explanation, the parts constituting the reduction part (60) in the present invention are the parts mentioned above. The name “for reduction” is added to the name of “”, and the reference numeral “A” is added to the description.

  The reduction transport unit (1A) is a transport path for transporting the raw material including the foreign matter discharged by the removed raw material discharge means (42). The reduction inspection unit (10A) applies the raw material transported to the reduction transport unit (1A). A predetermined inspection is performed. When the raw material inspected by the reduction inspection section (10A) falls down the reduction drop section (20A), the raw material containing foreign substances is sorted by the reduction course changing means (31A), and the reduction discharge section ( 40A) separates and discharges raw materials containing foreign substances and raw materials not containing foreign substances. The operation of the return route changing means (31A) is controlled by a return control unit (not shown). The raw material dropped in a state in which the reduction course changing means (31A) is not in contact is discharged as a high-quality raw material to the high-quality raw material discharge means (41A) for reduction, and can be returned to the high-quality raw material discharge means (41). .

  In the foreign matter removing apparatus (M) provided with the reducing unit (60) of the present invention, the raw material containing the foreign matter discharged to the reducing removal raw material discharging means (42A) is removed by the same configuration as the reducing unit (60). You may provide further the site | part which distributes and reduces.

M Foreign matter removing device 1 Conveying unit 1A Reducing conveying unit 2 Partition (conveying unit)
10 Inspection Unit 10A Reduction Inspection Unit 11 Inspection Unit 12 Transmission Unit (Inspection Unit)
20 Falling part 20A Reduction falling part 21 Partition (falling part)
30 Foreign matter sorting section 31 Course changing means 31a Member 31A Return course changing means 32 Receiving means (foreign matter sorting section)
40 discharging unit 40A reducing discharging unit 41 high quality raw material discharging unit 41A reducing high quality raw material discharging unit 42 removing raw material discharging unit 42A reducing removed raw material discharging unit 50 control unit 51A reducing control unit 51 control unit 52 receiving unit (control unit)
53 Transmitting means (control unit)
60 Reduction part S Effective diameter of member

Claims (2)

A transport unit that transports a fluid raw material in a predetermined direction; an inspection unit that includes a predetermined inspection unit for detecting foreign matter with respect to the raw material transported by the transport unit; and the inspection unit. A drop portion where the inspected raw material falls, and a path change means which is provided at a position where the raw material can come into contact with the falling raw material by changing the course of the raw material by contacting the falling raw material. A foreign matter sorting unit, a discharge unit provided at a lower portion of the foreign matter sorting unit, each for discharging the raw material whose course has been changed by the course changing unit, and information on the detection of the foreign matter by the inspection unit. On the basis of the movement of the path changing unit in contact with the falling raw material at the timing when the foreign matter detected by the inspection unit falls at the position of the path changing unit in contact with the raw material. Foreign matter removing apparatus characterized by comprising at least a control unit for controlling. The foreign matter removing apparatus according to claim 1, wherein the route changing unit is configured by a member that contacts the falling raw material, and the member has an effective diameter narrower than a range of the falling raw material.

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