JP3137206U - Sacrifice device - Google Patents

Abstract

In a sacrifice device provided on the bottom of a small ship, there is provided a sacrifice device that adjusts the amount of seawater supplied to and discharged from the sacrifice device as the ship advances, and pumps and supplies seawater when the ship is stopped.
A sacrificial apparatus in which a first scapper 3 for water supply and a second scapper 4 for drainage are respectively attached to a plurality of through holes 1b provided in a ship bottom 1a of a small ship. Seawater amount adjusting means 7 is attached to the second scapper 4. The seawater amount adjusting means 7 is configured to be screwed by the outer screw portion 7c, and the amount of seawater supplied and discharged to the sacrifice device by changing the opening area S of the water intake port 7b according to the degree of screwing (advancement and retraction). Adjust. When the ship is stopped, a pump (not shown) is attached to the first scapper 3 side to pump up seawater and supply it to the sacrifice device.
[Selection] Figure 2

Description

  The present invention relates to an improvement of a sacrifice device provided on the bottom of a small ship.

  In general, small fishing boats and motor boats for sea fishing, etc. are equipped with a sacrifice device inside the bottom of the ship in order to store the fish caught by fishing or net fishing, etc. until they return to the port. Seawater can be supplied to and drained from the sacrifice device through the through-hole.

  However, since the seawater supply and drainage to the sacrifice device is performed along with the navigation of a small vessel, a large amount of seawater is vigorously supplied depending on the navigation speed, and the fish etc. stored in the sacrifice device are weakened. Had the inconvenience of killing. In addition, when fishing while stopped at sea, the supply and drainage of seawater into the cage is not performed, the water temperature, ammonia concentration, etc. rises and oxygen is deficient, and the fish in the cage etc. There was also an adverse effect.

Conventionally, this kind of sacrifice device has been disclosed in, for example, Patent Document 1 and Patent Document 2, but Patent Document 1 discloses that surplus water in the sacrifice can be prevented by preventing the reverse flow of seawater into the sacrifice fish boat. The surplus water discharge device for the sacrifice that can be automatically drained is described, and Patent Document 2 describes a backflow prevention valve that is attached to a scapper (water supply / drain plug) provided at the bottom of the sacrifice.
JP-A-2005-14661 JP2007-191072

  The conventional sacrifice device is mainly related to a technique for draining seawater in the sacrifice apparatus along with the navigation of a small vessel, and there is no disclosure about a technique for adjusting the amount of supply and drainage when supplying and draining into the sacrifice apparatus. . In addition, there is no disclosure of a technique for protecting fish and the like in the sacrifice device when the boat is stopped when seawater is not supplied to the sacrifice device.

  The present invention is made in order to solve the above-mentioned problems in the prior art, and is provided in the inside of the bottom of a small ship and is designed to supply and discharge seawater by navigating the ship. An object of the present invention is to provide a sacrifice device capable of adjusting the amount of water supply and drainage and protecting fish and the like in the sacrifice device when the ship is stopped.

  In order to achieve the above object, according to the first aspect of the present invention, a sacrifice device through which seawater enters and exits through a plurality of through holes provided in the ship bottom is provided inside the ship bottom. A first scupper having a function of introducing seawater into the sacrifice device when the ship advances is attached to the through hole located at the front with respect to the direction, and the sacrifice hole is located in the through hole located at the rear. A sacrifice apparatus to which a second scapper having a function of deriving seawater in the apparatus to the outside is attached, and the amount of seawater supplied to and discharged from the sacrifice apparatus is adjusted to the first and / or second scapper It is characterized in that a seawater amount adjusting means is attached.

  The invention of claim 2 is the sacrifice apparatus according to claim 1, wherein the seawater amount adjusting means is a cylindrical lid attached to the first and / or second scapper formed in a cylindrical shape. And the water intake is provided in the trunk | drum, It is characterized by the above-mentioned.

  The invention of claim 3 is the sacrifice apparatus according to claim 2, wherein the seawater amount adjusting means is attached to be movable up and down along the axial direction of the first and / or second scapper, The amount of seawater supplied to and drained from the sacrifice device is adjusted by changing the opening area of the intake port.

  According to a fourth aspect of the present invention, in the sacrifice device according to the third aspect, the seawater amount adjusting means is formed with a threaded portion in a cylindrical body portion, and the threaded portion is connected to the first scupper and / or the second Each screw is formed by screwing into a threaded portion formed on the scraper, and the opening area is changed by advancement and retraction of the screwing.

  The invention of claim 5 is the sacrifice apparatus according to any one of claims 1 to 4, wherein the first scapper, the second scapper and the seawater amount adjusting means are made of a synthetic resin material. It is characterized by.

  The invention of claim 6 is characterized in that, in the sacrifice device according to claim 1, the seawater amount adjusting means is removed from the first scapper when the ship is stopped, and a pump is attached to the first scapper.

  The invention of claim 7 is the sacrifice apparatus according to claim 6, wherein the pump is fixed to a cylindrical mounting member, and a screw portion is formed on the mounting member, and the screw portion is connected to the first mounting portion. It attaches by screwing in the thread part formed in the scapper.

  The invention of claim 8 is the sacrifice apparatus according to claim 6 or claim 7, wherein the pump has a water intake port positioned lower than a water level of seawater in the sacrifice apparatus when the ship is stopped. To do.

  According to the invention of claim 1, in the sacrifice device provided on the inner side of the ship bottom, when the ship advances, the seawater amount adjusting means attached to the first scapper having a function of introducing seawater into the sacrifice device, Adjusting the amount of water discharged from the ginger apparatus by adjusting the amount of water supplied to the ginger apparatus, and adjusting the amount of water discharged from the ginger apparatus by the seawater amount adjusting means attached to the second scapper having the function of deriving the seawater inside the ginger apparatus to the outside Can do. Thereby, it becomes possible to adjust the amount of water supply and drainage to the sacrifice device appropriately, and fish and other catches can be stored in an optimal state.

  According to the second aspect of the present invention, the seawater amount adjusting means is a cylindrical lid, and can be simply configured by providing a water intake in the trunk portion. It can be easily attached to the first and second scappers formed in a shape.

  According to the invention of claim 3, the seawater amount adjusting means is attached so as to be movable up and down along the axial direction of the first and second scappers, thereby changing the opening area of the intake port. The amount of water supply and drainage to the sacrifice device can be adjusted easily.

  According to the fourth aspect of the present invention, the seawater amount adjusting means can be easily obtained by screwing the screw portions formed on the cylindrical body portion into the screw portions of the first and second scappers. And the opening area of the water intake can be changed by advancing and retreating the screwing.

  According to the invention of claim 5, the first scapper, the second scapper, and the seawater amount adjusting means can be manufactured at low cost by forming them with a synthetic resin material, thereby preventing rusting. You can also.

  According to the sixth aspect of the present invention, it is possible to introduce new seawater into the sacrifice device by removing the seawater amount adjusting means from the first scapper when the ship is stopped and attaching a pump to the first scapper. Thereby, an oxygen deficient state can be avoided by suppressing an increase in water temperature and ammonia concentration in the sacrifice apparatus.

  According to the seventh aspect of the present invention, the pump is fixed to a cylindrical mounting member, and a threaded portion is formed on the mounting member, and the threaded portion is screwed into the threaded portion formed on the first scraper. By doing so, it can be easily attached.

  According to the eighth aspect of the present invention, the intake port of the pump is positioned lower than the water level of the seawater in the sacrifice device when the ship is stopped, so that it can be operated immediately without requiring priming water.

Hereinafter, embodiments of a sacrifice apparatus according to the present invention will be described with reference to the accompanying drawings.
1A and 1B show an embodiment in which a sacrifice device according to the present invention is provided in a small vessel, where FIG. 1A is a schematic plan view and FIG. 1B is a schematic side view. 1 (a) and 1 (b), reference numeral 1 denotes a small vessel such as a fishing boat or a sea fishing motor boat, and a sacrifice device 2 is provided inside the bottom of the stern.

  The sacrifice device 2 is formed in a box shape, and a lid 2a is attached to an upper end of the sacrifice device 2 via a hinge 2b so as to be opened and closed. As shown in FIG. 2A, the bottom plate of the sacrifice device 2 also serves as a part of the bottom 1a of the small vessel 1, and a plurality of through holes 1b are formed in the bottom portion. And the through-hole 1b located in the front part with respect to the forward direction A of the ship among the plurality of through-holes 1b has a function of introducing seawater into the sacrifice device 2 when the ship advances. A scapper 3 is attached, and a second scapper 4 having a function of deriving seawater in the sacrifice device 2 to the outside is attached to the through hole 1b located at the rear.

  As shown in FIG. 1A, the first scapper 3 and the second scapper 4 are not positioned in a straight line with respect to the forward direction A of the ship. On the left side of the front part, the second scappers 4 are arranged so as to be biased toward the right side of the rear part. This is because the seawater that has flowed into the sacrifice device 2 from the first scapper 3 is sufficiently convected during the advance of the ship and is prevented from flowing out from the second scapper 4 in a short time.

  In this embodiment, the number of through-holes 1b provided in the bottom of the small vessel 1 is two. However, the present invention is not limited to this. Three or more through-holes 1b are provided, and three or more scappers are attached accordingly. May be. In the case of a small vessel 1, the size of the sacrificial device 2 is usually vertical, the horizontal size is about 500 to 1000 mm, the height is about 300 to 400 mm, and the number of scappers is appropriately set according to the size of the sacrificial device 2 And

  As shown in FIG. 2 (a), the first scapper 3 has a cylindrical body portion 3a fitted into a front through-hole 1b provided on the bottom 1a of the ship so that the lower end of the body portion 3a. The inner threaded portion provided on the inner peripheral surface of the tightening ring 5 on the outer threaded portion 3c provided on the outer peripheral surface of the body portion 3a. The fastening ring 5 is screwed to the body 3a by screwing 5a. As a result, by inserting the ship bottom 1a between the flange portion 3b of the first scapper 3 and the lower end surface of the tightening ring 5, the first scapper 3 can be fitted and fixed in the front through hole 1b of the ship bottom 1a. it can. It should be noted that a seal ring 6 is interposed on the tightening ring 5 side, and although not shown, the tightening ring 5 is preferably screwed to the ship bottom 1a in order to prevent rotational return after screwing.

  As shown in FIG. 2 (a), the lower end surface 3d is not horizontal as shown in FIG. 2 (a), and the first scapper 3 is formed on an inclined surface inclined upward in the forward direction A of the ship. In this way, the cross rails 3e that are formed in a lattice shape and perpendicular to the forward direction A of the ship are formed as inclined bars that are inclined downward toward the forward direction A of the ship. The vertical rails 3f in the same direction as the forward direction A of the ship are inclined upward in the forward direction A of the ship.

  The second scapper 4 has a trunk portion 4a formed in a cylindrical shape like the first scapper 3 and is fitted into a rear through hole 1b provided in the ship bottom 1a from below, and is provided at a lower end portion of the trunk portion 4a. The flange portion 4b is brought into contact with the peripheral edge of the lower end of the through hole 1b, and the inner screw portion 5a provided on the inner peripheral surface of the tightening ring 5 is provided on the outer screw portion 4c provided on the outer peripheral surface of the trunk portion 4a. By screwing, the fastening ring 5 is screwed to the body 4a. As a result, by sandwiching the ship bottom 1a between the flange portion 4b of the second scraper 4 and the lower end surface of the tightening ring 5, the second scraper 4 can be fitted and fixed in the rear through hole 1b of the ship bottom 1a. . Also in this case, the seal ring 6 is interposed on the tightening ring 5 side, and although not shown, the tightening ring 5 is preferably screwed to the ship bottom 1a in order to prevent rotational return after screwing.

  As shown in FIG. 2 (a), the lower end surface 4d of the second scapper 4 is not horizontal, but is formed on an inclined surface that is inclined downward toward the forward direction A of the ship, and is formed in a lattice shape. At the same time, the cross rails 4e perpendicular to the forward direction A of the ship are formed as inclined bars that are inclined upward in the forward direction A of the ship. Note that the vertical bars 4f in the same direction as the forward direction A of the ship are inclined downward toward the forward direction A of the ship.

  The first scapper 3 and the second scapper 4 have substantially the same configuration, and are attached to the through hole 1b of the ship bottom 1a by reversing the inclination direction of the lower end surface by 180 degrees. That is, as described above, the first scraper 3 is positioned such that the lower end surface 3d is inclined upward in the forward direction A of the ship, while the second lower end surface 4d of the second scraper 4 is forward of the ship. It is positioned so as to incline downward in the direction A, which is a state in which the first scapper 3 is rotated 180 degrees in the horizontal plane. Further, since the first and second scappers 3 and 4 have substantially the same configuration, the tightening ring 5 and the seal ring 6 can be used as a common member.

  Since the first and second scappers 3 and 4 are attached as described above, the first scapper 3 exhibits the function of introducing seawater into the sacrifice device 2 when the small vessel 1 moves forward. While supplying water, the 2nd scapper 4 exhibits the function which guide | induces the seawater in the sacrifice apparatus 2 outside, and drains.

  FIG. 3 shows the seawater amount adjusting means 7, which is a cylindrical lid attached to the first and / or second scapper 3 and 4, and a water intake 7 b is provided in the trunk portion 7 a. In addition, an outer threaded portion 7c is provided on the outer peripheral surface of the body portion 7a. In this case, the water intake 7b is a cut-out hole provided by cutting out the body portion 7a, but is not limited thereto, and may be, for example, a vertically long slit or a long hole. Moreover, although the example which provided the water intake 7b facing the trunk | drum 7a is shown, it is not necessarily limited to this, It is also possible to provide 1 or 3 or more.

  The seawater amount adjusting means 7 can be attached by screwing the outer threaded portion 7c with the inner threaded portion 3g provided in the first scapper 3, as shown in FIG. At that time, the seawater amount adjusting means 7 can freely change the opening area S of the water intake port 7b according to the degree of screwing. That is, the opening area S gradually decreases as the seawater amount adjusting means 7 is screwed, and conversely, the opening area S gradually increases as the seawater amount adjusting means 7 is screwed back. . When the screwing is stopped, the size of the opening area S is determined at the stop position, and the size is maintained. The same applies to the second scapper 4 and the description thereof will be omitted. FIG. 2C is a schematic plan view showing a state in which the seawater amount adjusting means 7 is attached to the second scapper 4.

  The seawater amount adjusting means 7 is configured to freely change the opening area S of the water intake port 7b according to the degree of screwing of the outer screw portion 7c, but is not limited to this, for example, the first scapper 3 and the second It is possible to change the opening area S of the water intake port 7b by attaching it so that it can move up and down along the axial direction of the Shopper 4.

  FIG. 4 is a schematic longitudinal sectional view showing a state in which the seawater amount adjusting means 7 attached to the first scapper 3 is advanced to the maximum and screwed. In this state, the water intake 7 b is located in the first scapper 3. Since it is lower than the upper edge, the opening area S is zero. For this reason, the seawater amount adjusting means 7 exhibits a function as a lid of the first scapper 3. If the seal ring 10 is fitted on the uppermost portion of the body portion 7 a of the seawater amount adjusting means 7, the seal ring 10 is connected to the flange portion 7 d of the seawater amount adjusting means 7 and the upper end of the body portion 3 a of the first scapper 3. By being closely attached to the part, the sealing function as a lid can be improved.

  As described above, since the seawater amount adjusting means 7 has a sufficient function as a lid, the conventional lid C as shown in FIG. 5 becomes unnecessary. When the small ship 1 is tethered to the quay, it is normal to close the first and second scappers 3 and 4 with the lid C. Since the attachment of the lid C to the second scapper 4 is the same, the description thereof is omitted.

  The sacrifice device 2 according to the present embodiment is configured as described above, and when the small vessel 1 moves forward, the seawater amount adjusting means 7 of the first and second scappers 3 and 4 is, for example, illustrated in FIG. If each is positioned as in 2 (a), seawater can be supplied from the first scapper 3 into the sacrifice device 2 and the seawater in the sacrifice device 2 can be drained from the second scapper 4 to the outside. Can do.

  Then, the amount of seawater supplied into the sacrifice device 2 can be adjusted by the seawater amount adjustment means 7 of the first scapper 3, and the amount of seawater drained from the inside of the sacrifice device 2 to the outside by the seawater amount adjustment means 7 of the second scraper 4. Can be adjusted, and the seawater in the sacrifice apparatus 2 can be held in an appropriate amount. For this reason, a large amount of seawater is excessively supplied depending on the navigation speed of the ship, and the stored fish and the like are vigorously shaken and weakened or killed because the current in the sacrifice device 2 is too strong. The conventional inconvenience such as can be prevented.

  In the present embodiment, the seawater amount adjusting means 7 is attached to both the first and second scappers 3 and 4, but either the first or the second scapper 3 is used. In some cases, the seawater amount adjusting means 7 is attached.

  On the other hand, when the small vessel 1 is stopped at sea, and the fishing rod is lowered and fishing is performed on the spot, the seawater in the sacrifice device 2 is the same as the inundation line R as shown in FIG. Will keep the water level. Since no water is supplied to or drained from the sacrifice device 2 while the boat is stopped, if the fishermen are fishing for a long time in this state, the water temperature, ammonia concentration, etc. in the sacrifice device 2 will rise and oxygen will be deficient and stored. May adversely affect fish.

  In the present invention, a pump 8 as shown in FIG. 6 is attached to the first scapper 3 to pump seawater from the sea and feed it into the cage apparatus 2 so as to suppress adverse effects on fish and the like at the time of stopping. I made it.

  In this case, the pump 8 is fixed to the upper plate 9a of the cylindrical mounting member 9 with screws, and an outer threaded portion 9b is formed on the outer peripheral surface of the lower portion of the mounting member 9, and this outer threaded portion 9b is It can be attached by being screwed onto the inner threaded portion 3g of one scapper 3. When the pump 8 is attached, the first scapper 3 is removed. In addition, when the pump 8 is attached, the water intake 8a provided in the lower part is positioned lower than the seawater position (the inundation line R) in the sacrifice device 2 when the ship is stopped. As the pump 8, for example, a piranha bilge pump (manufactured by Shaflo) can be used.

  When the pump 8 is operated when the ship is stopped, seawater communicating with the sea through the attachment member 9 and the first scapper 3 can be pumped up, and the seawater can be supplied into the sacrifice apparatus 2 from the drain port 8b. Since the water is not efficiently drained from the second scapper 4 side during the stoppage, it is preferable to operate discontinuously so that the sacrifice device 2 does not become full due to excessive water supply by the pump 8. Since the seawater supplied from the hump 8 is convected and stirred in the sacrifice apparatus 2, an oxygen deficient state can be suppressed as much as possible.

  The present invention is particularly applicable to a sacrifice device provided on the bottom of a small vessel used as a fishing boat, and is a sacrifice device that supplies and discharges seawater by navigation of the ship, and the seawater into the sacrifice device. The amount of water supply and drainage can be adjusted, and the fish and the like in the sacrifice device can be protected when the ship is stopped.

The embodiment which provided the sacrifice apparatus which concerns on this invention in the small ship is shown, (a) is the schematic plan view, (b) is a schematic side view. The principal part of the sacrifice apparatus which concerns on this invention is shown, (a) is a schematic sectional drawing which shows the 1st scapper and the 2nd scapper which attached the seawater amount adjustment means, (b) is X- in (a). A schematic cross-sectional view along the X-ray, (c) is a schematic plan view showing a state in which the seawater amount adjusting means is attached to the second scapper. It is a side view which shows the seawater amount adjustment means of the sacrifice apparatus which concerns on this invention. It is a schematic longitudinal cross-sectional view which shows the state which advanced the seawater quantity adjustment | control means of FIG. It is a schematic longitudinal cross-sectional view which shows the state which attached the conventional lid | cover to the scraper. It is a side view which shows the pump attached to the sacrifice apparatus which concerns on this invention. It is a schematic longitudinal cross-sectional view which shows the state which attached the pump of FIG. 6 to the 1st scapper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Small ship 1a Ship bottom 1b Through-hole 2 Sacrificial device 3 1st scapper 3a trunk | drum 3c outer side screw part 3d lower end surface 3g inner side screw part 4 2nd scupper 5 tightening ring 5a inner side screw part 6 seal ring 7 seawater amount adjustment means 7a Body 7b Water intake port 7c Outer screw part 8 Pump 8a Water intake 9 Mounting member 9b Outer screw part

Claims (8)

  A sacrifice device through which seawater enters and exits through a plurality of through holes provided at the bottom of the ship is provided inside the ship bottom. Among the through holes, the through hole located at the front of the ship in the forward direction includes the ship A first scapper having a function of introducing seawater into the sacrifice device during forward movement is attached, and a second scapper having a function of leading the seawater in the sacrifice device to the outside through a through hole located at the rear , Wherein the first scapper and / or the second scapper is provided with seawater amount adjusting means for adjusting the amount of seawater supplied to and discharged from the ginger device. apparatus. The seawater amount adjusting means is a cylindrical lid attached to the first and / or second scapper formed in a cylindrical shape, and a water intake is provided in the trunk portion thereof. The sacrifice apparatus according to claim 1.   The seawater amount adjusting means is attached so as to be vertically movable along the axial direction of the first and / or second scapper, and the amount of seawater supplied and discharged to the sacrifice device by changing the opening area of the intake port The sacrifice apparatus according to claim 2, wherein the adjustment is performed.   The seawater amount adjusting means has a threaded portion formed on a cylindrical body, and is attached by screwing the threaded portion to the threaded portion formed on the first and / or second scapper, 4. The sacrifice apparatus according to claim 3, wherein the opening area is changed by the advancement and retraction of the screwing.   The sacrifice apparatus according to any one of claims 1 to 4, wherein the first scapper, the second scapper and the seawater amount adjusting means are formed of a synthetic resin material.   2. The sacrifice apparatus according to claim 1, wherein the seawater amount adjusting means is removed from the first scapper when the ship is stopped, and a pump is attached to the first scapper.   The pump is fixed to a cylindrical mounting member, and a screw portion is formed on the mounting member, and the screw portion is attached by being screwed to a screw portion formed on the first scraper. The sacrifice apparatus according to claim 6.   The sacrifice device according to claim 6 or 7, wherein the pump has a water intake port positioned lower than a water level of seawater in the sacrifice device when the ship is stopped.

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