JP2013240778A - Chemical dissolving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical dissolving device capable of precisely detecting a replenishing time of solid chemicals.SOLUTION: A chemical dissolving device has chemical loading containers 2, a chemical dissolving container body 1 capable of storing chemical solution, a supplying pipe 3 supplying water to the chemical dissolving container body from the outside, a discharge pipe 5 discharging the chemical solution from the chemical dissolving container body to the outside, small lids A comprising a magnetized material or a material sensing magnetism, and magnetic proximity sensors B, the chemical loading containers is arranged on the upper part of the chemical dissolving container body, the inside of the chemical loading containers and the inside of the chemical dissolving container body are in communication, solid chemicals 11 are loaded while being stacked in a vertical direction in the chemical loading container, the supplied water contacts the solid chemicals loaded in the chemical loading containers and the solid chemicals are dissolved and thereby chemical solution can be obtained, thereby the solid chemicals move downward in series, the small lids is placed on the stacked solid chemicals, the small lids move downward along with the downward movement of the solid chemicals, the magnetic proximity sensors notify the movement condition of the small lids.

Description

  The present invention relates to a drug dissolver. More specifically, the present invention relates to a drug dissolver capable of accurately detecting the replenishment timing of a solid drug by dissolving a solid drug with water to produce a drug solution with a constant concentration.

  Water such as domestic wastewater, industrial wastewater, pool circulating water, and bathhouse circulating hot water is sterilized using a chlorinating agent such as calcium hypochlorite and trichloroisocyanuric acid, and discharged or circulated. In this treatment, in order to effectively disinfect bacteria with water, it is required to quantitatively dissolve a chemical such as a chlorinating agent in water.

  As an apparatus for dissolving a solid medicine in water, for example, Patent Document 1 includes a soluble material chamber to which water is supplied from the outside, and a discharge port provided in the lower portion thereof. There is described a chemical agent supply apparatus having a mechanism in which a soluble material is arranged toward the surface, and the supply of water from the outside is adjusted to raise and lower the liquid level in the soluble material chamber to periodically contact the soluble material.

  Patent Document 2 includes a collection reservoir, an erosion reservoir provided thereon, and a canister that contains a drug provided thereon, and water is supplied into the erosion reservoir to overflow the erosion reservoir. The collected water flows into the collection reservoir and is discharged to the outside from the collection reservoir. The lower part of the drug element contained in the canister comes into contact with the water in the erosion reservoir, and the drug element is eroded and dissolved. A feeding device is disclosed. A chemical supply device is disclosed in which the drug element moves downward by its own weight when dissolution and erosion progress.

In Patent Document 3, a large number of chlorinated drugs that are tablet-molded into a vertical medicine cylinder are filled, water is sprayed from the upper part of the medicine cylinder, and the water is allowed to flow down along the surface of the chlorinating agent. A melting device is described which is configured to take off.
Patent Document 4 consists of a drug dissolution tank whose interior is divided into an upper layer and a lower layer by an eye plate. The solid drug is randomly filled in the upper layer, and water is supplied from a nozzle that sprays upward to dissolve the solid drug. The drug dissolution water is stored in the lower layer and can be drained by a pump from the bottom of the drug dissolution tank, and the level of the stored drug dissolution water is below the eye plate. .

  Patent Document 5 discloses a drug loading container, a drug dissolver body that can store a drug solution, a supply pipe that supplies water to the drug dissolver body from the outside, and a discharge pipe that discharges the drug solution from the drug dissolver body to the outside. The drug loading container is provided in the upper part of the drug dissolver body, and the drug loading container and the drug dissolver main body communicate with each other, and the solid drug is aligned vertically in the drug loading container. The supply tube is arranged so that the outlet of the supply tube is mounted upward in the drug dissolver body, and the water discharged from the supply tube outlet touches the solid drug loaded in the drug loading container. A drug dissolver is disclosed in which a drug is dissolved by water touching a solid drug to obtain a drug solution.

Japanese National Patent Publication No. 4-500171 JP-T 6-501418 Japanese Patent Publication No.59-13890 JP-A-8-155465 JP 2009-172584 A

In these devices, the consumption state of the solid drug can be confirmed by measuring the concentration of the chemical solution that comes out of the discharge pipe of the device. Everything has been consumed.
An object of the present invention is to provide a drug dissolver that can accurately detect the replenishment timing of a solid drug by dissolving a solid drug with water to produce a drug solution with a constant concentration.

As a result of intensive studies to achieve the above object, the present inventor has completed the invention including the following aspects.
[1] Drug loading container, drug dissolver body that can store drug solution, supply pipe that supplies water from outside to the drug dissolver body, discharge pipe that discharges drug solution from the drug dissolver body to the outside, magnetic A drop lid made of a magnetic material or a material sensitive to magnetism, and a magnetic proximity sensor,
The drug loading container is provided in the upper part of the drug dissolver main body, and the drug loading container and the drug dissolver main body communicate with each other.
The solid drug is stacked and loaded in the drug loading container in the vertical direction, and the supplied water touches the solid drug loaded in the drug loading container and the solid drug dissolves to obtain a drug solution. It moves to the bottom in order,
A drop lid is placed on the stacked solid medicine, the drop lid moves downward as the solid medicine moves downward, and the magnetic proximity sensor notifies the movement state of the drop lid. A drug dissolver.
[2] The drug dissolver according to [1], wherein the solid drug is cylindrical and the drop lid is cylindrical or toric.
[3] The drug dissolver according to [1] or [2], wherein the drug loading container has an outer lid that closes the upper opening, and the drop lid is connected to the inside of the outer lid by a string-like body.

According to the drug dissolver of the present invention, a solid drug can be dissolved with water to produce a drug solution with a constant concentration, and the replenishment timing of the solid drug can be accurately detected.
The chemical dissolver of the present invention is suitable for disinfecting various bacteria such as domestic wastewater, industrial wastewater, pool circulating water, and bathhouse circulating hot water.

It is a figure which shows one embodiment of the chemical | medical agent dissolver which concerns on this invention. It is a figure which shows the usage example of the chemical | medical solution dissolver which concerns on this invention. It is a figure which shows a mode that a dropping lid | cover moves in order in accordance with melt | dissolution erosion of the solid chemical | medical agent in a medicine cylinder. It is a figure which shows the range of the volume used for design of a chemical | medical solution supply apparatus. It is a figure which shows an example of the jig | tool for taking out a drop lid.

  The present invention will be described below with reference to the drawings. However, the present invention is not limited to what is shown in the drawings, and includes those in which the shape and the like are changed within the spirit and scope of the present invention.

  As shown in FIG. 1, a drug dissolver S of the present invention includes a drug loading container 2, a drug dissolver body 1 capable of storing a drug solution, a supply pipe 3 for supplying water to the drug dissolver body from the outside, a drug solution Are discharged from the drug dissolver main body to the outside, a drop lid A, and a magnetic proximity sensor B.

The drug loading container 2 is provided on the upper part of the drug dissolver body 1. The inside of the medicine loading container and the inside of the medicine dissolver main body communicate with each other.
Moreover, the medicine loading container 2 is configured so that solid medicines can be stacked and loaded in the vertical direction. The outer shape of the drug loading container is usually a cylinder or a square tube. The solid medicine 11 may be loaded in the medicine loading container as it is. For example, as shown in FIG. 3, the solid medicine molded into a cylindrical shape in a cylinder (medicine cylinder 8) whose bottom is closed by the eye plate 13. 11 and the medicine cylinder 8 may be inserted into the medicine loading container 2.

The shape and size of the solid drug are not particularly limited as long as they do not form a bridge. For example, depending on the internal shape of the medicine loading container or the medicine cylinder, it can be a cylindrical shape, a prismatic shape or the like. When the medicine loading container, the medicine cylinder, and the solid medicine are cylindrical, handling is easy. The solid drug 11 is preferably a cylindrical plate that can be loaded in the drug loading container 2 by stacking a plurality of the drugs in the vertical direction. The size of the solid drug 11 is preferably such that when the lower solid drug is dissolved and eroded, the upper solid drug can be successively moved downward while maintaining the state of being stacked in the vertical direction. If the solid medicine is too small compared to the inner dimensions of the medicine loading container or medicine cylinder 8, when the solid medicine is loaded or moved downward in sequence, the stack of the solid medicine may collapse and form a bridge. . In addition, if the size of the solid medicine is the same as the inside size of the medicine loading container or medicine barrel, or if the gap between the inner wall of the medicine loading container or medicine cylinder and the solid medicine is small, the solid medicine swells slightly. As a result, the solid drug may be in close contact with the inner wall and difficult to move downward.
The kind of applicable solid medicine is not particularly limited. Examples thereof include inorganic chlorinating agents such as calcium hypochlorite, and organic chlorinating agents such as trichloroisocyanuric acid, dichloroisocyanuric acid, sodium dichloroisocyanurate, and potassium dichloroisocyanurate.

  The bottom of the drug loading container may be closed with an eye plate so that the solid drug loaded in the drug loading container does not fall into the drug dissolver body. When the above-mentioned medicine cylinder 8 is used, the medicine cylinder is provided with a flange 12 or a wing larger than the inside dimension of the medicine loading container at the top of the medicine cylinder so that the medicine cylinder does not fall into the medicine dissolver body. The medicine cylinder may be fixed at the upper edge of the container, or an annular protrusion smaller than the outer diameter of the medicine cylinder is provided at the bottom of the medicine loading container, and the bottom of the medicine cylinder is placed on the protrusion. You may make it possible to fix the medicine cylinder. In addition, a perforated plate, a slit plate, an expanded metal, a wire mesh, or the like is used for the eye plate.

In the present invention, as shown in FIG. 3 (a), the drop lid A is placed on the stacked solid medicine 11. The lower solid medicine is dissolved by water, and as the solid medicine moves in a downward direction, the dropping lid also moves downward (FIG. 3 (b)).
The drug dissolver of the present invention has a magnetic proximity sensor B. The installation location of the magnetic proximity sensor B is not particularly limited, but it is preferable to install the magnetic proximity sensor at a position where it can be detected that the dropping lid has moved downward. The magnetic proximity sensor may be installed outside or inside the drug dissolver. The magnetic proximity sensor can be installed at a predetermined position with a screw, an adhesive, a double-sided adhesive tape, or the like. Moreover, in order to be able to adjust the detection position by a magnetic proximity sensor arbitrarily, you may install with a hook-and-loop fastener, a suction cup, etc., and you may install so that it may move on a rail and can be fixed. When the solid medicine 11 is consumed, the solid medicine 11 and the drop lid A are sequentially moved downward, and when the drop lid is moved close to the magnetic proximity sensor B, the magnetic proximity sensor B is dropped and detects the presence of the lid A. To do. By this detection, it is possible to notify that the solid medicine has been reduced to a predetermined amount, and to recognize that it is necessary to replenish the solid medicine. Examples of the method of transmitting the medicine out to the operator include lighting an alarm lamp, blowing a buzzer, and displaying the medicine out on the display of the control device. Moreover, the medicine out signal can be applied to sterilization system interlocking.

When it is desired to replenish a new solid medicine after almost all the solid medicine has been consumed, a magnetic proximity sensor is installed at the bottom of the medicine loading container 2. When it is desired to replenish before all the solid medicine is consumed, a magnetic proximity sensor is installed above the lowermost part of the medicine loading container 2. In addition, the remaining amount of medicine can be detected step by step using a plurality of magnetic proximity sensors. When there are a plurality of medicine loading containers, it is preferable to determine the installation location of the magnetic proximity sensor so as not to detect other drop lids that are not paired.
Any commercially available magnetic proximity sensor can be used as the magnetic proximity sensor. Magnetic proximity sensors include a terminal block type and a cord drawer type, but the cord drawer type is often easier to use.

  When a plurality of drug loading containers 2 are installed in the drug dissolver S, it is preferable that the drop lid is placed on the solid drug loaded in each drug loading container. The magnetic proximity sensor is preferably paired with a drop lid, but may be smaller than the number of drop lids. FIG. 1 shows a case where there are two drug loading containers.

  The drop lid is made of a magnetic material or a material sensitive to magnetism. The magnetic material or the material sensitive to magnetism is not particularly limited as long as it can be detected by the magnetic proximity sensor, but the one with too strong magnetic property is before the drop lid is fully lowered. It may be detected by a magnetic proximity sensor, or may be detected by a magnetic proximity sensor attached to another drug loading container that is not paired. On the other hand, the detection accuracy tends to decrease when the magnetic condition is too weak. The material of the drop lid is preferably a material that is not eroded by a solid drug or a chemical solution in which the drug is dissolved. Specifically, a rubber magnet or a ferrite magnet can be preferably used. The shape of the drop lid may be any shape as long as it can be smoothly lowered with the downward movement of the solid medicine and can be reliably detected by the magnetic proximity sensor. When the solid medicine is cylindrical, the shape of the drop lid is preferably cylindrical or toric. The size of the drop lid is preferably smaller than the inner dimension of the medicine loading container or medicine cylinder. A cylindrical drop lid provided with a toroidal drop lid or an annular portion can be easily taken out from the drug loading container or the medicine cylinder by hooking a rod-shaped jig with a hook on the ring portion. It is preferable that the hook-shaped rod-shaped jig is made of a material resistant to a drug or is provided with an anticorrosion coating. The thickness and weight of the drop lid are not particularly limited, but may be appropriately selected from the viewpoints of ease of handling, smoothness of descending, and prevention of floating due to water pressure from the outlet 4 of the supply pipe.

  The upper opening of the medicine loading container 2 is closed with an outer lid 14 (FIG. 1). The outer lid 14 is removed, and the solid medicine 11 or the medicine cylinder 8 loaded with the medicine 11 can be inserted into the medicine loading container. The solid drug replenishment may be performed by stopping the entire drug dissolver S including other drug loading containers that are not magnetically detected, or only the drug loading container that requires drug replenishment is stopped. Replenishment may be performed. When replenishing the solid medicine, the drop lid at the bottom of the medicine loading container or medicine cylinder is taken out to replenish the solid medicine. Then, the drop lid is placed on the replenished solid medicine again. It is preferable that the lid is connected to the inside of the outer lid by dropping it with a string-like body. When the outer lid is removed, the drop lid is pulled up from the medicine loading container by the string-like body, so that the drop lid can be taken out, the solid medicine can be replenished, and the drop lid can be placed smoothly. Further, instead of the outer lid 14, the medicine cylinder 8 may be dropped with a string to connect the lid. It is preferable that the string-like body is made of a material resistant to a drug or is provided with an anticorrosion coat. When the empty medicine cylinder 8 is taken out, the dropped lid can be collected together. The string-like body is preferably one that is not eroded by a solid drug or a chemical solution in which it is dissolved.

  Further, instead of dropping the lid with a string-like body, it is also possible to drop the lid onto a rod-shaped jig made of a ferromagnetic material such as iron and pull it out with a magnetic force. In order to make the drop lid easy to be attracted by a magnetic force, a rod-shaped jig having a structure in which a disc body D made of a ferromagnetic material is attached to the distal end of the shaft P as shown in FIG. Moreover, it is preferable that the disc body D is provided with an anticorrosion coating in order to prevent corrosion due to chemicals. The shaft P is preferably made of a material resistant to chemicals such as vinyl chloride resin, or an anticorrosion coat is applied. The rod-shaped jig shown in FIG. 5 has a ring H that can be hung on the proximal end of the shaft P. When the rod-shaped jig is not used, a predetermined storage location, for example, the side of the drug dissolver body, etc. , Can be hung on.

The drug dissolver body 1 is provided below the drug loading container 2 and has a structure capable of storing a drug solution obtained by dissolving the solid drug 11. In addition, in the chemical | medical agent dissolver S shown in FIG. 1, the stand 9 which supports a chemical | medical agent dissolver main body is provided.
A supply tube 3, a discharge tube 5, and a drain tube (not shown) are attached to the drug dissolver body 1.

  The supply pipe 3 is for supplying water from the outside to the drug dissolver body. The supply pipe outlet 4 shown in FIG. 1 is mounted upward in the drug dissolver body, and water is jetted upward when water is supplied. It is also possible to provide an eye plate, a spray nozzle or the like at the supply pipe outlet 4 so that the sprayed water is spread upward and sprayed or sprayed. In the present invention, it is particularly preferable that water is ejected upward in order to keep the amount of drug dissolved constant. In the drug dissolver shown in FIG. 1, it is preferable to spray the spray water up to a height at which it touches the solid drug in the drug loading container. Since the amount of drug dissolved is substantially proportional to the amount of water that has come into contact with the solid drug, for example, it is preferable to adjust the amount of jet water by providing a flow meter 10 or the like in the middle of the supply pipe. Although two supply pipe outlets are shown in FIG. 1, the present invention is not limited to this, and the number of supply pipe outlets can be selected as appropriate in accordance with the number and size of the drug loading containers. In addition, as long as a solid chemical | medical agent melt | dissolves with water and comes to move below in order, the supply direction of water, a supply position, etc. are not limited to what is shown in FIG.

  A part of the solid medicine that has come into contact with water ejected from the outlet of the supply pipe is dissolved by the water to become a chemical solution. The drug solution falls from the drug loading container into the drug dissolver body by gravity and is stored. As shown in FIG. 3A, the solid medicines are stacked and loaded in the medicine loading container in the vertical direction. In FIG. 3A, solid drugs are stacked in a vertical direction, but solid drugs may be stacked randomly as long as they do not form a bridge. Then, when the bottom of the solid medicine is dissolved and eroded by the jet water, the solid medicine on the upper part moves downward in order and becomes a state as shown in FIG. In the drug dissolver shown in FIG. 1, since the solid drug is not immersed in water, swelling of the solid drug is suppressed, and collapse and outflow of the drug due to swelling are prevented. Further, since the solid drug moves downward in order, it is possible to prevent dissolution from being stopped due to bridge formation. In this way, the concentration of the chemical solution can be made constant.

  The discharge pipe 5 is for discharging the chemical solution from the drug dissolver body to the outside. The attachment position of the discharge pipe 5 is not particularly limited, but is usually a position where the inlet 6 of the discharge pipe 5 is lower than the outlet 4 of the supply pipe 3. Moreover, in order to suppress the pressure fluctuation in the container body and the abnormal rise in the liquid level of the chemical solution, it is preferable to attach the inlet 6 of the discharge pipe 5 to the lowest position of the drug dissolver body. For example, the inlet 6 of the discharge pipe 5 is attached at a position below half the height of the drug dissolver body.

In the present invention, it is preferable that the liquid level of the chemical stored in the drug dissolver body is maintained at a position lower than the supply pipe outlet 4. When the liquid level of the chemical liquid is higher than the supply pipe outlet 4, the upward jet height of water at the supply pipe outlet 4 is lowered, and there is a possibility that the solid drug is not sufficiently dissolved. The liquid level of the drug solution rises as the pressure in the drug dissolver body increases and as the solid drug dissolves. Therefore, it is preferable to provide the supply pipe outlet 4 at a position where the assumed maximum pressure is applied in the drug dissolver body and the liquid level of the chemical liquid assumed in the state where the solid drug is completely dissolved does not exceed the supply pipe outlet 4. .
That is, as shown in FIG. 4, the volume (V) above the position of the discharge pipe inlet 6 and the volume (V ₁ ) above the position of the supply pipe outlet 4 and the maximum volume (V _D ) of the solid drug to be loaded. ) With respect to the differential pressure x [atm] between the upstream portion of the main pipe and the downstream portion of the main pipe, in the operating temperature range of the drug dissolver, (V−V _D ) / (1 + x) −V _D > It is preferred to design the drug dissolver so that the V ₁ relationship is satisfied. The maximum volume (V _D ) of the solid drug to be loaded is the maximum value of the total volume of the solid drug that can be loaded into the drug loading container.

  For example, when 20 tablets of 125 cc are loaded per tablet with a design of an assumed maximum pressure of 0.2 MPa in a 50 L drug dissolver body, 50 L of the dissolver body at atmospheric pressure of about 0.1 MPa is loaded. It is assumed that the space is reduced to about 13.3 L, that is, water corresponding to a volume of about 36.7 L is increased, and the water level in the container body is increased. The supply pipe outlet 4 is provided so as to be above the liquid level of the chemical solution even when the assumed water level rise occurs.

  The drain tube is for discharging the drug solution from the drug dissolver body to the outside. During normal use of the drug dissolver, the drain tube is normally closed. Drain when the liquid level of the chemical solution in the drug dissolver body 1 rises abnormally due to clogging of the discharge pipe, excessive supply of water from the supply pipe, etc., or when the drug dissolver is cleaned. The tube can be opened to discharge chemicals to the outside. In the present invention, the drain pipe may be provided as necessary, and may also serve as the discharge pipe 5.

  By connecting the supply pipe 3 of the drug dissolver S to the upstream part 15 of the main pipe and the discharge pipe 5 of the drug dissolver to the downstream part 16 of the main pipe, a chemical supply apparatus can be configured. The said chemical | medical solution supply apparatus can be utilized for the germicidal disinfection process of water, such as domestic wastewater, industrial wastewater, pool circulating water, and bathhouse circulating hot water. A valve and a flow meter can be provided in the middle of the supply pipe 3 and a pump can be provided in the middle of the discharge pipe 5 in order to adjust the amount of water flowing from the main pipe. The valve provided in the middle of the supply pipe 3 may be one that can be manually opened and closed, or from a means for measuring a chemical concentration (for example, chlorine concentration) in water or a means for measuring time. It may be one that can be controlled to open and close by a signal.

  In the said chemical | medical solution supply apparatus, as shown in FIG. 2, the filtration apparatus F and the said chemical | medical agent dissolver S can be attached in parallel between the upstream part 15 of the main piping, and the downstream part 16 of the main piping. When the head loss of the filtration device F is larger than the head loss of the drug dissolver S, the head loss Δp of the filtration device F allows the chemical solution from the drug dissolver to be provided in the middle of the discharge pipe 5 without providing a pump. It becomes possible to discharge.

  According to the drug dissolver of the present invention, even if the lower solid drug dissolves and erodes, the shape does not collapse, and as the lower solid drug dissolves and erodes, the upper solid drug moves downward in order, so a certain amount Can be dissolved, and a chemical solution with a constant concentration can be stably supplied. Further, according to the drug dissolver of the present invention, a removable drop lid that moves as the solid drug moves downward is installed at the top of the solid drug, and at the bottom of the drug loading container, Since the magnetic proximity sensor for detecting the drop lid is installed, when most of the solid medicine is consumed, the drop lid moves to the lower part of the medicine loading container, and the magnetic proximity sensor detects the drop lid, It is possible to accurately detect the replenishment time of the medicine. Furthermore, when the supply of water from the supply pipe is interrupted (for example, when the valve is closed, etc.), the drug dissolver of the present invention substantially stops the dissolution of the solid drug. When the concentration of the chemical solution stored in the container body does not increase and the supply of water from the supply pipe resumes (for example, when the valve is opened), the high concentration chemical solution is discharged from the drug dissolver. There is nothing to do.

1: Drug dissolver body; 2: Drug loading container; 3: Supply pipe;
4: supply pipe outlet; 5: discharge pipe; 6: discharge pipe inlet; 8: medicine cylinder;
9: fixed base; 10: flow meter; 14: outer lid; A: drop lid;
B: Magnetic proximity sensor; F: Filtration device; S: Drug dissolver;
pi: water pressure upstream of the main pipe; po: water pressure downstream of the main pipe;
Δh: head difference between supply pipe outlet and discharge pipe inlet; 11: solid drug

Claims (3)

Drug loading container,
A drug dissolver body capable of storing a drug solution,
A supply pipe for supplying water to the drug dissolver body from the outside,
A discharge pipe for discharging the chemical solution from the drug dissolver body to the outside,
A drop lid made of a magnetic material or a magnetic sensitive material, and a magnetic proximity sensor;
The drug loading container is provided in the upper part of the drug dissolver main body, and the drug loading container and the drug dissolver main body communicate with each other.
The solid drug is stacked and loaded in the drug loading container in the vertical direction, and the supplied water touches the solid drug loaded in the drug loading container and the solid drug dissolves to obtain a drug solution. It moves to the bottom in order,
A drop lid is placed on the stacked solid medicine, the drop lid moves downward as the solid medicine moves downward, and the magnetic proximity sensor notifies the movement state of the drop lid. A drug dissolver.   The drug dissolver according to claim 1, wherein the solid drug is cylindrical, and the drop lid is cylindrical or toric.   The drug dissolver according to claim 1 or 2, wherein the drug loading container has an outer lid that closes the upper opening, and the drop lid is connected to the inside of the outer lid by a string-like body.

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