JPS61183014A - Fish transfer device and check valve - Google Patents

Abstract

PURPOSE:To enable both the amount of injected water and the amount of reverse water flow to be reduced associated with a shorter shifting time provided between processes preventing fishes from being damaged by arranging a high pressure injection pipe in the cylinder of check valves at both suction and discharge port sides which are arranged on the lower side of a vacuum tank so as to inject water before the valve is closed. CONSTITUTION:Water which contains fishes, is sucked up to a vacuum tank 1, then, the sucking is stopped when the tank 1 is full of the water with a sensor 11 activated. This allows an electromagnetic valve 38 to be opened and another electromagnetic valve 44 to be closed. This causes the high pressure water to be injected into a check valve 16 from an injection pipe 27 allowing fishes in a valve cylinder 21 to be discharged K and K'. Subsequently, a valve 38 is allowed to be closed and a valve 39 is allowed to be opened permitting the high pressure water to be injected from an injection pipe 28 against the back of the valve in itself. Then, the valve 14 is opened and the valve 39 is closed allowing the remaining fishes in a check valve 19 at the discharge port side to be similarly discharged. This configuration enables both the amount of injected water and the amount of reverse water flow to be reduced preventing fishes from being damaged.

Description

[Detailed description of the invention] The present invention relates to a fish transport device.

? ) Prior Art FIGS. 1 and 2 show a solid material transfer device and a check valve according to the prior art. Depressurize the inside of vacuum tank 1 to remove fish and seawater (
A fish transfer device that sucks in seawater (hereinafter referred to as fish seawater) (arrow a), then pressurizes it and pumps it (arrow b) uses check valves 2 and 3 on the suction and discharge sides. Therefore, a large amount of fish was interposed between the valve seat and the valve body, and when the valve closed, the fish were bitten, causing damage to the fish. In order to inject pressurized water just before the valve closes by installing fluid pressure feed pipes 4 and 5 in the arrow C or d).
It is a very effective means to transfer the fish through a check valve without causing any damage to the fish when the valve is closed. However, regarding this device, since the inside of the vacuum tank 1 is under negative pressure at the final stage of the suction stroke, pressure water (arrow C
) is injected, but at the same time, the pressure water is diverted to arrow 0' and the pressure on the suction hose side is released to atmospheric pressure, so there is a difference in water level between the water level of fish N7 and the check valve. Corresponding negative pressure acts, most of the water flows in the direction of arrow C', and the position of fish and seawater drops to point .
The amount of diverted water) is the pressure water (arrow C) passing through the check valve 2,
It is designed to increase the amount of water to almost four speeds to push the fish out of the check valve.

When moving to the fork-shaped discharge stroke, the inside of the vacuum tank 1 is pressurized and discharged in the direction indicated by the arrow, but the check valve shown in FIG. 2 is closed by the pressurized water flow valve.

By the way, this type of check valve is slow to respond, and before it completely closes, the pressurized diverted water b'' flows to the suction hose side, and is added to the diverted water (arrow C'), and the position of the fish and seawater is drops from point 0 to point 0.At the beginning of the next suction stroke after the discharge stroke, after the amount of water from point e' has been sucked up, the fish seawater (arrow a) flows through the check valve. 2, the water passes through this point and is sucked into the vacuum tank 1, resulting in a delay in the suction operation time for the amount of water from this point e' to the check valve, and a reduction in the energy of the vacuum pump 8 that suctions the water. There are still problems with mechanical efficiency such as losses, which are detracting from the effectiveness.Also, in the check valve 3 on the discharge side, the phenomenon of backflow when the valve is closed is similar to the above. Next, in cold regions during the winter, it is necessary to prevent freezing of the lower part of the vacuum tank and the inside of the valve casing of the check valve, especially when not in use, and to prevent the inside of the valve casing. There is a strong need for ease of inspection and maintenance.

(b) Purpose The present invention eliminates the above-mentioned defects, provides a first injection pipe for high-pressure water at the bottom of the valve housing, injects water directly between the valve seat and the valve body, cleans the inside of the valve housing, and injects water. When the valve is stopped, high-pressure water is injected from the second injection pipe on the back of the valve body for a short period of time to force the valve to close.The stroke changeover is also quick, and the amount of water injected is extremely small, reducing energy loss. The purpose of this system is to improve the performance of fish transfer equipment, which is characterized by the ability to close the valve without causing fish to become trapped, as well as to prevent freezing in winter and ease of inspection and maintenance. (C) Structure An embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a side sectional view of a vacuum tank. An upper lid 12 provided with a strainer 10 and a level sensor 11 capable of detecting water level is fastened and fixed with bolts and nuts 13 to an upper flange 9 of a vacuum tank 1 having a cylindrical shape with an inverted conical lower part. The lower inverted conical tip has flanges 14.1 on the suction side and the discharge side.
4, and a suction side check valve 16 is attached to the suction side flange 14 via a connecting pipe 15 and connected to the suction e#17. A discharge side check valve 19 is attached to the discharge side flange 14 via a connecting pipe 18 and connected to a discharge pipe 20. The check valves 16 and 19 on the suction side and the discharge side have an upper part 423 removably attached to the upper part of the valve housing 21 with a bolt nut 22, and flanges 24 and 24 are attached to the suction and discharge ends, respectively. A valve seat 25 is provided at the inner end of the suction port, and a valve body 2 is provided above the valve seat.
6 is attached to the arrow f-f' so that it can be opened and closed. A first injection pipe 27 for high aqua regia is provided on the lower side of the valve housing 21.
A second injection pipe 28 is attached to the upper back of the machine to supply water.

FIG. 4 shows a piping system diagram of the present invention. The strainer 10 of the vacuum tank 1, detailed in FIG. The suction port 34 is immersed in the fish tank 35. The distal end of the discharge pipe 20 is connected to a fish water separator or conveyor 37 using a pipe or hose 36. Water supply pipe 8.39.40
．． 41, a water supply pump 42 and a water supply tank 43 (
Of course, water can also be taken directly from seawater). Another electromagnetically operated valve 44 is connected via piping between the milling point g and the water supply tank 43. From the electromagnetic control device 45, the level sensor 11 and each electromagnetic operation valve 38, 39, 40, 41 and 44 are connected.
It is connected to the wire 46 by a wiring 46.

Wiring to the four-way switching valve 31, vacuum pump 32, and water supply pump 42 is omitted from illustration. Now, when the vacuum pump 62 and the water supply pump 42 are started and the four-way switching valve 31 is switched to the suction stroke side, the vacuum pump 32 generates a vacuum. Air is extracted from the tank 1, the discharge side check valve 19 is closed, and the suction side check valve 16 is opened, and as the degree of vacuum in the vacuum tank 1 increases, the fish and seawater pushed by atmospheric pressure (arrow 1) Hot water is sucked in as shown by arrow j and fills the vacuum tank 1.

When hi near the upper limit is reached, the level sensor 11a detects it, the electromagnetic control table ft45 is activated, the electromagnetic operation valve 38 is opened, the electromagnetic operation valve 44 is closed, and the high pressure water of the water supply pump 42 is discharged from the first injection pipe 27. Water is forced into the valve casing 21 of the suction side check valve 16 in the direction of arrow k and directly injected between the valve seat 25 and the valve body 26.

(See Figure 3 below), valve seat 25, valve body 26, and valve housing 21
The fish body that was present near the inside is separated into arrows k and '' and is pushed out of the valve housing 21, resulting in a state where no fish spring is present inside the +1 valve housing 21.

Next, when a timer (incorporated in the electromagnetic control device 1i45, not shown) that can set an arbitrary water injection time from the time when the electromagnetic operation valve 68 is opened is activated, the electromagnetic operation valve 38 is closed, and the high-pressure water (arrow k) At the same time as water injection is stopped, the electromagnetic operation valve 39 is opened, and from the second injection pipe high-pressure water (as indicated by the arrow) is injected into the back of the valve element 26, and the valve element 26 moves in the direction of the arrow f'' (see this figure). In this case, only a short period of water injection is required).

At this point, the timer operates again (any water injection time can be set), the solenoid operated valve 44 opens, the solenoid operated valve 39 closes, and high pressure water (as indicated by the arrow) is injected from the second injection pipe 28. is stopped, and high-pressure water flows in the direction of arrow m. At this point, the position of the valve body 26 is at arrow f'' (half-closed state).

At the same time, when the four-way switching valve 61 is switched to the discharge stroke side, the discharge side of the vacuum pump 32 is connected to the vacuum tank 1, so the vacuum tank 1 is filled with air, and the backflow water (arrow j' ) to close the valve by following the arrow f on the valve body 26.
This is the valve closing operation from the position to the arrow f, and the backflow water (
The arrow j') hardly flows to the suction pipe 17 side.

Furthermore, as mentioned above, at this point, there is no fish body near the suction side check valve 16, so the suction side check valve 16 is completely closed, and no fish body is bitten. In this way, by injecting high-pressure water directly into the valve housing 21 from the first injection pipe 27 just before closing the valve, the inside of the valve housing 21 can be completely cleaned with a small amount of water, and the second injection By injecting water from the pipe 28 and bringing the valve body 26 into a half-closed state, the stroke is changed from the suction stroke to the pressurization stroke, which greatly reduces the above-mentioned backflow phenomenon, compared to the conventional technology. Place @
The point e' can be improved to 1 point, making it possible to shorten the time required to change the process and save energy.

As pressurization progresses, the discharge side check valve 19 opens, and the fish and seawater is forced in the direction of arrow n and transferred from the discharge port 36 to a fish water separator or conveyor 37.

When the discharge stroke approaches the lower limit and reaches h2, the high-pressure water arrow O of the level water pump 42 flows into the first injection pipe 2 of the discharge side back pressure valve 19.
7 into the valve housing 21, the valve seat 25, the valve body 26, and the fish body interposed near the valve housing 21 are indicated by arrows 0 and 0'.
The fish is diverted and pushed out from the valve housing 21, and no fish body is present inside the valve housing 21. Next, when the water injection for the set time is finished in the same way as above, the timer (not shown) in the electromagnetic control device 45 is activated, the electromagnetic operation valve 40 is closed, and the injection of high-pressure water (arrow 0) is stopped. At the same time, the first solenoid operated valve 41 is opened, and high pressure water (arrow p) is injected into the back of the valve body 26 from the second injection pipe 28, and the valve body 26 is in the direction of the arrow f.
It moves to a half-closed state. At this point, the timer operates again, the solenoid operated valve 44 opens and the solenoid operated valve 41 closes, and the injection of high pressure water (arrow p) from the second injection pipe 28 is stopped, and the high pressure water flows as shown by the arrow m. The flow discharge process is completed. At the same time, the four-way switching valve 31 is switched to the suction stroke side, and the vacuum tank 1 starts to contain oil due to the vacuum pump 32. As the negative pressure progresses, the discharge side check valve 19 closes. Similarly, the valve body 26 moves from arrow f to arrow f.
The backflow water (arrow 1) hardly flows to the vacuum tank 1 side, and since there is no fish body near the discharge side check valve 19, the discharge side check valve is completely closed. They do not bite the fish body under the umbrella. FIG. 5 is a piping system diagram showing an embodiment. A check valve 4 is installed between the branch point g and the discharge side (branch point q) of the water supply pump 42.
) and connect the solenoid operated valve 44 between the branch point q and the water tank 4.
Connect the piping between 3 and the accumulator 48 at the branch point g.
It has been established. 49 indicates an air cock 50 which is a drain cock (details will be described later).

) This embodiment performs operations and operations similar to those described above, but the level sensor 111L detects the water level and =f
- The electromagnetic control device 45 operates, the electromagnetic operation valve 38 opens, the electromagnetic operation valve 44 closes, and the high pressure water in the water supply pin 42 passes through the check valve 4) from the first injection pipe 27 to the suction side check valve 16 of the valve housing 21 and was injected directly between the valve seat 25 and the valve body 26, the fish body that was interposed nearby was separated in the direction of arrow k and arrow k and was pushed out of the valve housing 21 at the same time. High pressure water (arrow r) is stored in the accumulator 48 . Next, the timer operates and the solenoid operated valve 38 closes.
When the solenoid-operated valve 39 and the solenoid-operated valve 44 are opened, the injection of high-pressure water (arrow k) is stopped, and the water supply valve z is stopped.
42 high pressure water flows in the direction of the arrow. At this time, the accumulated pressure water (indicated by the arrow) in the accumulator passes through the electromagnetic operation valve 39, and the second injection'! From f28, high pressure water (arrow l') is injected into the back of the valve body 26, and the valve body 26 moves in the direction of the arrow f. As mentioned above, it is desirable for this water injection to be performed in a very short period of time and at a constant amount (this is effective in keeping the position of the arrow f on the valve body 26 at a constant position each time).
Compared to the variations in the short-time opening and closing operations of the accumulator 48, the amount of water accumulated in the accumulator 48 exhibits a very stable operation, and the best results can be obtained. It is preferable to set the timer so that when the injection of high pressure water (arrow /') by the accumulated pressure water (arrow r') is finished, the timer is activated and the N magnetic operation valve 39 is closed. Next, the injection to the discharge side check valve 19 (injection of high pressure water (arrow o1 arrow p') by operation of the magnetically operated valves 40, 41 and 44) is similar to the case of the suction side check valve 16 described above. Therefore, the explanation will be omitted. As mentioned above, the amount of backflow water (arrow j S&) caused by the check valves 16, *'/ and 19 is a major factor that directly affects the efficiency of the sled machine, and this determines the performance of the equipment. At S.

4. FIG. 6 is a piping system diagram showing another example of the embodiment. Two sets of the above vacuum tanks (including check valves) are used. Of course, a vacuum pump and a pressure pump are used to control the flow rate. Cheese 5 on the flange of the suction pipe 51
2 is connected to one side of the cheese 52, the suction pipe 17 of one vacuum tank is connected to the other side, and the suction pipe 17 of the vacuum tank 1B is connected to the other side.
A cheese 54 is connected to the flange of the discharge pipe 56, and a vacuum tank 1 is connected to one side of the cheese 54.
The discharge pipe 20 of the vacuum tank 1B is connected to the other end of the discharge pipe 20 of the vacuum tank 1B. Also, each strainer - 10A%
10B is connected to a four-way switching block 55, and the level sensor 11A111B is connected to an electromagnetic control device 45 by a wiring 46. In addition, since the solenoid operated valves 58, 38' and 4 are air (or hydraulic) solenoid operated valves, an air (or hydraulic) pump 56 is provided between the electromagnetic control device 45 and the air (or hydraulic) [magnetic operated valves]. A pneumatic (or hydraulic) electromagnetic control device 57 is connected thereto. Other than piping fittings, the same shall apply as above.

In this way, one vacuum tank and vacuum tank 1B are installed in parallel, and when one vacuum tank person is in the suction stroke, vacuum tank 1B is in the discharge stroke, and conversely, one vacuum tank person is in the discharge stroke. At times, the vacuum tank 1B is on a suction stroke. At the time of stroke transition, the four-way switching valve 31' is operated and the connection between the vacuum pump 32' and the pressure pump 55 is reversed.
A journey transformation is performed.

In this way, the suction stroke and the discharge stroke are performed alternately to transfer the fish.

FIG. 7 is a side sectional view of the check valve, and FIG. 8 is a plan view.

Flanges 24 and 24 are attached to the ends of the suction port 59 and discharge port 60 of the valve housing 21, which is provided with a flange 58 at the top, and a valve seat 25 is provided at the inner end of the suction port, and the upper part of the valve seat is provided with flanges 24 and 24.
A valve body mounting seat 26 is provided, and the upper part (flexible portion) of the valve body 26 is attached so that the valve body 26 can be opened and closed in the directions of arrows f-f'. Bento 2
A first injection pipe 27 for high-pressure water is installed on the lower side of the valve housing 21, and a second injection pipe 28 is installed on the upper back of the valve housing 21. A maintenance hole 61 with a screw 61 is provided in the flange 58 at the top of the valve housing, and a maintenance cover 62 with an opening/closing nut 62 attached to the center is screwed into the upper cover 63, which is detachably provided with a bolt and nut 64.
Tighten and secure.

The access lid 62 is provided with a mounting screw hole 65, into which the air conc 49 is mounted.

(Of course, this air cock may be located at any position on the upper part of the valve housing.) A mounting screw seat 66 is provided at the lower part of the valve housing 21, and the drain cock 50 is attached to this. 29 is the water supply pipe of the first injection pipe 27, 29 is the second injection pipe 2
8 water supply pipes are shown. Fish seawater inhaled during the inhalation process (
Arrow j) opens the valve body 26 in the direction of arrow f' and passes through the check valve 67, but when the suction stroke ends, the fish seawater stops in the valve housing 21, and there is a fish body inside the valve housing 21. Therefore, at the final stage of the suction stroke, the first injection pipe 27 also pumps high-pressure water (arrow k) between the valve seat 25 and the valve, as there is a risk of fish being caught between the valve seat 25 and the valve body 26 when the valve is closed. When water is poured between the body 26, the fish seawater (KI, the fish body) is separated into arrows k and ' and is pushed out of the valve housing 21. After water injection is stopped, the valve body 26 is at the position indicated by the arrow f' (in the prior art j', even if backflow water (arrow plate) flows, the response speed of the valve body 26 is slow and the valve does not close easily. Since the backflow water flows in the direction of the arrow j') and is difficult to move in the direction of the arrow f, in the present invention, high-pressure water (as shown in the arrow) is injected into the back of the valve body 26 from the m2 injection pipe 28, so that the valve can be forcibly closed. state (the response speed is extremely fast if it is at the position of arrow f), and the backflow water (arrow j)
It is characterized by completely closing the valve. Next 2
8. On the 2nd day, installing the water supply pipe 29 will be much easier.

Of course, even on the 2nd day, the water supply 'If29 can be installed either upward or to the left or right (see Figure 8).

Next, the upper air cock 49
When the drain cock 50 is opened manually, the water inside the valve housing 21 is discharged to the arrow port. In Fig. 5, a drain cock 50 is installed at the lowest position of the vacuum tank 1 and the lowest position of the water supply pipe.
When the air cock 49 and drain cock 50 of the check valves mentioned above are opened, residual water in the entire apparatus can be drained, thereby making it possible to prevent freezing. Also, when inspecting the check valve 67, without removing the bolt nut 64 that tightens the upper cover 63, insert a spanner (an accessory tool, not shown) into the opening/closing nut 62 and turn it.
2 can be easily removed, inspection and maintenance are very easy, and the injection port of the second injection pipe can be conveniently extended to the back of the valve body 26, making the injection port 6 days old.

If installed like this, a small amount of water It
6 can be moved in the direction of arrow f, and the valve closing operation can be performed reliably.

Effects of the present invention The present invention has the advantage of injecting high-pressure water directly into the valve casing from the first injection pipe provided in the check valve at the final stage of each of the suction and discharge strokes of the transfer device. The fish body interposed between the seat and the valve body is pushed out of the valve housing, thereby preventing the fish body from being bitten when the valve is closed, and preventing backflow after the valve body is semi-closed by water injection from the second injection pipe. It is possible to completely close the valve with water, and there is extremely little backflow water, no damage to the fish body, and the amount of water injected into the sea is very small, making it possible to shorten the time for transition and conversion of strokes, and also prevent freezing and maintenance in winter. The present invention provides a fish transfer device which is characterized by ease of inspection and which causes no damage to fish bodies.

[Brief explanation of the drawing]

FIG. 1 is a piping system diagram of a solid material transfer device according to the prior art. FIG. 2 is a side sectional view of a check valve according to the prior art. FIG. 3 is a side sectional view of the vacuum tank of the present invention. Figure 4 is a piping system diagram. FIG. 5 is a piping system diagram showing an embodiment. FIG. 6 is a piping system diagram showing another example of the embodiment. FIG. 7 is a side sectional view of the check valve. Figure 8 is a plan view. FIG. 9 is a side sectional view showing another example of the check valve. 1----1 vacuum tank, 2.3----1 check valve,
4.5-----Pulse fluid pressure feeding pipe, 6-----Suction hose, 7-----Negative tank, 8-----4 pumps, 9-----1 Upper flange, 1) --Strainer-1
11-----Level sensor, 12--One upper lid, 13--One melt nut, 14-----Flange, 15----One connecting pipe, 16------- Suction side check valve, 17---1 suction pipe, 18---1 connection pipe, 1
9---Discharge side check valve, 20---Discharge pipe, 21
----------- Valve case, 22 ----- Bolt nut, 2
3----1 Dobe lid, 24-1 to -1 flange, 25-
--- Valve seat, 26 --- Valve body, 27 --- First
Injection pipe, 28-----1st injection pipe, 29.30---
m - Water supply pipe, 31 ---- One-way switching valve, 32 ----
-1 vacuum pump, 3'5.-111 pipe or hose, etc., 34--1 inlet, 65-fish tank, 36--vip or hose, etc., 57----- boiler Water separator or conveyor, etc., 58.59'+ 40.41----1 electromagnetic operation valve, 42----1 water supply pump, 43----1 water supply tanker, 44----1・electromagnetic operation Valve, 45----1 electromagnetic control device, 46・---1 wiring, 4)・---1---check valve, 4 El------------Akinimulator-1
49----1 air cock, 50----drain cock, 51----suction pipe, 52----cheese,
53--1--Masudou tube, 54--Cheese, 55--
--1 Pressure pump, 56---Air (or hydraulic)
pump, 57-----air (or hydraulic) electromagnetic control device, 58-----flange, 59--one inlet,
60---1 discharge port, 61---1 hand hole, 62・-11-hand cover, 63---1 upper cover, 64---bolt nut, 65---1 mounting screw Hole, 66----Installation No. 1 Diagram 4 disease

Claims (10)

[Claims] (1) At the top of the vacuum tank, there is a strainer connected to a four-way switching valve and a vacuum pump, and an upper lid with a level sensor connected to an electromagnetic control device that can be attached or removed, and a fish tank at the bottom. In a transfer device equipped with a suction side check valve that can be connected to a conveyor, etc., and a discharge side check valve that can be connected to a conveyor, etc., each of the suction side check valve and the discharge side check valve A first injection pipe and a second injection pipe for high-pressure water are provided in the casing, and respective water supply pipes connected to a water supply pump are connected to the injection pipes via electromagnetic operation valves, and a four-way switching valve is connected to the electromagnetic control device. The valve is connected to the vacuum pump, the water supply pump, and the electromagnetic operated valve by wiring, and is configured so that high-pressure water can be sequentially injected into the valve casing from the first injection pipe and the second injection pipe before the check valve closes. A device for transporting fish. (2) Connect a check valve between the piping branch point of the solenoid-operated valve and the discharge side of the water supply pump, connect the solenoid-operated valve between the discharge side of the water supply pump and the water supply tank, and connect the solenoid-operated valve to the piping branch point above. A fish transport device according to claim 1, which is provided with an accumulator. (3) A fish transfer device according to claim 1 or 2, wherein a drain cock is provided at the bottom of the vacuum tank, the water supply pipe, and the check valve, and an air cock is provided at the top of the check valve. . (4) Two sets of vacuum tanks are used, and each suction side check valve is connected to the suction pipe through the cheese, and the discharge side check valve is connected to the discharge pipe through the cheese. Claim 1, item 2, wherein the stroke and the discharge stroke can be operated alternately.
The fish transport device according to item 1 or 3. (5) The fish transfer device according to any one of claims 1 to 4, wherein the electromagnetic operated valve is an air electromagnetic operated valve. (6) The fish transfer device according to any one of claims 1 to 4, wherein the electromagnetic operated valve is a hydraulic electromagnetic operated valve. (7) A top cover with a removable maintenance cover is firmly fixed to the flange of the upper part of the valve housing, and the valve has a suction port on the front surface and a discharge port on the rear surface, and a valve seat is provided on the inner end of the suction port. A first injection pipe is provided in the lower part of the valve housing of the check valve, and a second injection pipe is provided in the upper back part of the valve housing of the check valve, which has a valve body attached to the valve seat so as to be openable and closable, and between the valve seat and the valve body in the valve housing, respectively. and a check valve for a fish transfer device configured to be able to sequentially inject high-pressure water into the back of the valve body. (8) A check valve for a fish transfer device according to claim 7, wherein an air cock is provided in the upper part of the valve housing, and a drain cock is provided in the lower part of the valve housing, so that residual water can be drained. (9) A check valve for a fish transfer device according to claim 7 or 8, wherein the second injection pipe is provided on the upper side surface of the valve housing. (10) A check valve for a fish transfer device according to any one of claims 7 to 9, characterized in that the injection port of the second injection pipe extends to the back of the valve body.