CN108739960B

CN108739960B - Salmon viscera cleaning device

Info

Publication number: CN108739960B
Application number: CN201810970179.1A
Authority: CN
Inventors: 赵明岩; 蒋昕余
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2018-08-24
Filing date: 2018-08-24
Publication date: 2023-04-14
Anticipated expiration: 2038-08-24
Also published as: CN108739960A

Abstract

The invention discloses a salmon viscera cleaning device, which comprises: the positioning mechanism (3) is arranged on the conveying mechanism and used for bearing and positioning salmon to be treated, and the lower part of the positioning mechanism is provided with a belly cutting groove; the conveying mechanism is used for driving the positioning mechanism (3) arranged on the conveying mechanism to move, so that the positioning mechanism (3) is conveyed to the intestine removing station; the sausage removing mechanism (4) is positioned at the sausage removing station, a blade is arranged at the tail end of the sausage removing mechanism (4), when the positioning mechanism (3) bearing the salmon to be treated is conveyed to the corresponding sausage removing station, the sausage removing mechanism (4) extends into the fish mouth of the salmon to be treated, the salmon enters the fish belly through the fish mouth, and the blade at the tail end rotates to cut off the fish sausages; and a belly cutting knife (5) for cutting the belly of the salmon to be treated through the belly cutting groove so as to enable the fish intestines of the salmon to be treated to fall from the belly. The invention realizes the automatic cleaning of the salmon viscera, thereby improving the cleaning efficiency and reducing the cleaning cost.

Description

Salmon viscera cleaning device

Technical Field

The invention relates to the technical field of salmon processing, in particular to a salmon viscera cleaning device.

Background

With the rapid development of economy in China, the consumption level of residents is greatly improved, wherein salmon consumption is in a blowout state: the total consumption of salmon in China in 2011 is 2.9 ten thousand tons, and in 2017, the total consumption exceeds 10 ten thousand tons. The salmon is rich in nutrition and unsaturated fatty acid, and the protein in the fish contains 18 amino acids (including 8 amino acids essential to human body), and the protein content is obviously higher than that of other fishes. Meanwhile, the salmon has few fish bones, fresh and tender meat, can be cooked and eaten raw, and has good taste. Therefore, the growth speed of the demand of the salmon in China is far higher than that of other fishes. Since the imported salmon is far from satisfying the domestic market, domestic attempts to culture salmon are made. In 2011, the yield of salmon in China is 0.82 ten thousand tons, and in 2015, the yield is increased to 1.61 ten thousand tons, which is expected to reach more than 3 ten thousand tons in 2018, and the annual average growth rate exceeds 20%. With the improvement of domestic culture technology and the improvement of environment, in addition to Qinghai-Tibet plateau, gansu, xinjiang and the like, other provinces of high-altitude areas (high altitude and low water temperature) start to culture salmon in large scale.

However, salmon belongs to low-temperature carnivorous fishes, has strong aggressiveness and violent temperament, is dead after being discharged, and cannot be transported by live fishes like snakeheads, crucian carps and the like. In order to keep freshness, the internal organs of the salmon must be removed immediately after the salmon is discharged (after the internal organs are removed, the salmon is not easy to deteriorate, but gills of the salmon do not need to be removed), and the salmon is quickly transported to various supermarkets and hotels in China by air after ice blocks are placed.

Although devices for removing scales and internal organs of fishes are available in China at present, the devices are basically used for four major fishes (black carps, grass carps, silver carps and bighead carps), crucian carps, small trash fishes and the like. The salmon belongs to large fishes (generally about 10 jin and about 70 cm in length), the meat of the salmon is fresh and tender, the fat layer is thick, the skin is easy to damage (the skin is easy to sell after being damaged), and the existing fish pretreatment equipment cannot be used. Therefore, at present, the internal organs of the salmon are completely removed manually, and the problems of low efficiency, high labor intensity, potential safety hazards, easiness in chilblain of low-temperature operators and the like exist. With aging and labor shortage, the cost of removing internal organs of salmon is continuously increased, and the cost becomes a huge burden for breeding enterprises.

The viscera of salmon is mainly fish intestines, the prior art cannot clean the viscera by adopting equipment, and particularly, the prior art lacks of automatic processing equipment, so that how to automatically clean the viscera of salmon is still a technical problem to be solved urgently in the industry.

Disclosure of Invention

In view of the above, the present invention provides a salmon viscera cleaning device for automatically cleaning salmon viscera, so as to improve efficiency and reduce cleaning cost.

The technical scheme provided by the invention is that the salmon viscera cleaning device with the following structure is provided, and comprises:

the positioning mechanism is arranged on the conveying mechanism and used for bearing and positioning the salmon to be treated, and the lower part of the positioning mechanism is provided with a belly cutting groove;

the conveying mechanism is used for driving the positioning mechanism arranged on the conveying mechanism to move so that the positioning mechanism is conveyed to the intestine removing station;

the sausage removing mechanism is positioned at the sausage removing station, the tail end of the sausage removing mechanism is provided with a blade, when the positioning mechanism bearing the salmon to be treated is conveyed to the corresponding sausage removing station, the sausage removing mechanism extends into the fish mouth of the salmon to be treated, the salmon enters the fish belly through the fish mouth, and the blade at the tail end of the sausage removing mechanism rotates to cut off the fish sausages;

and the belly cutting knife cuts the belly of the salmon to be treated through the belly cutting groove so as to enable the sausage of the salmon to be treated to fall from the belly.

Optionally, the intestine removing mechanism is further provided with a water spraying channel, and after the belly cutting of the salmon to be treated is completed, water is sprayed into the fish belly, so that the fish belly is cleaned and the falling of fish intestines is accelerated.

Optionally, the conveying mechanism includes at least two rollers, conveyor belts are disposed on the two rollers, at least one roller is driven to rotate so as to drive the conveyor belts to move, the positioning mechanism is disposed on the conveyor belts, and the conveyor belts below the abdomen cutting grooves of the positioning mechanism are hollowed out.

Optionally, the positioning mechanism includes a fish tank frame, a pair of upper partition plates and a pair of lower partition plates, the upper partition plates and the corresponding lower partition plates are located on the same side, the pair of upper partition plates and the pair of lower partition plates are both connected with the fish tank frame, the belly cutting groove is formed between the lower portions of the pair of lower partition plates, and the pair of lower partition plates are respectively hinged to two sides of the fish tank frame.

Optionally, the upper partition plate is provided with sliding blocks in a one-to-one correspondence manner, the fish tank frame is provided with a guide rail for the sliding blocks to slide, the sliding blocks can slide on the guide rail in a reciprocating manner, and springs are arranged between the outer side surface of the upper partition plate and the fish tank frame.

Optionally, a magnetic block is arranged on the outer side surface of the lower partition plate, an electromagnet matched with the magnetic block is arranged, and the electromagnet is electrified to attract the magnetic block, so that the lower partition plate is driven to move outwards.

Optionally, end plates are respectively arranged at two ends of the fish tank frame, wherein an opening for a fish mouth into which the intestine removing mechanism extends is formed in the end plate at one end, and a fish mouth fixing mechanism is installed at the opening.

Optionally, the intestine removing mechanism includes an outer tube, an outer tube gear, a threaded rod gear and a blade, the outer tube gear is fixed on the outer tube, the threaded rod extends into the outer tube, the blade is retractably mounted in front of the threaded rod, a knife slot for the blade to extend out is arranged on the outer tube, and the threaded rod gear is fixed on the threaded rod; the outer tube gear and the threaded rod gear are both driven by corresponding gears.

Optionally, a blade protrusion is arranged on the blade, a plane thread groove is formed in the front end portion of the threaded rod, the blade protrusion is embedded into the plane thread groove, and the blade is driven to stretch and retract through rotation of the threaded rod.

Optionally, the front end of the outer tube is connected with a tip, the tip is in threaded fit with the outer tube, a water outlet hole is formed in the front end of the tip, the threaded rod is hollow, the water outlet hole is communicated with a hollow inner cavity of the threaded rod, and water is injected into the threaded rod and is sprayed out of the water outlet hole.

Compared with the prior art, the structure of the invention has the following advantages: according to the physiological characteristics of salmon, a plurality of salmon are conveyed to an intestine removing station in sequence, an intestine removing mechanism extends into the belly of a fish through a fish mouth, a multi-blade extends out of the tail end of an intestine removing device, and the multi-blade rotates to cut off the fish intestines; then the fish belly is split by a laparotomy knife, and internal organs fall from the fish belly under the action of gravity; when the fish intestines are cut off, water with certain pressure can be sprayed into the fish belly from the intestines removing device, so that the fish belly can be cleaned, and the internal organs can be promoted to fall off from the fish belly smoothly. The invention realizes the automatic cleaning of the salmon viscera, thereby improving the cleaning efficiency and reducing the cleaning cost.

Drawings

FIG. 1 is a schematic structural diagram of the salmon viscera cleaning device of the invention;

FIG. 2 is a schematic view of the present invention in a bowel removal station;

FIG. 3 is a schematic structural view of the bowel removing mechanism;

FIG. 4 is a cross-sectional view of the blade and threaded rod;

FIG. 5 is a top view of the blade and threaded rod;

fig. 6 is a schematic structural view of the tip and the outer tube;

FIG. 7 is a schematic structural view of the positioning mechanism;

FIG. 8 is a bottom view of the positioning mechanism;

fig. 9 is a partially enlarged schematic view of fig. 7.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The present invention covers any alternatives, modifications, equivalents and variations that fall within the spirit and scope of the present invention.

In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are simplified and in non-precise proportion, and are only used for the purpose of facilitating and clearly assisting the description of the embodiments of the present invention.

The salmon belongs to large carnivorous fishes, has sharp teeth, and has fish intestines directly connected with fish mouths so as to be convenient for swallowing small fishes and shrimps. The fish intestines are thick at the position close to the fish mouth, have the diameter larger than 2 cm, are thick and have high toughness, cannot be torn off by hands, and must be cut off by a sharp blade or scissors. The tail end of the fish intestine is thin and is connected with ovulation holes (both female fish and male fish) and can be torn off by slightly pulling. Compared with salmon caught in deep sea abroad (wild), the viscera of the artificially cultured salmon has large specific gravity (about one jin), and thick fat is wrapped outside the intestines and the viscera to fill the whole fish belly. After the abdomen of the salmon is cut off and the fish intestines close to the fish mouth are cut off, all internal organs (including the fish intestines, the liver, the float, fat blocks and the like) can slide off from the abdomen under the action of gravity. Because the connecting part of the tail end of the fish intestine and the ovulation hole is thin, when the viscera fall off from the belly of the fish, the connecting part of the tail end of the fish intestine and the ovulation hole can be automatically cut off under the action of gravity, so that the viscera of the salmon fall off from the abdominal cavity, and the purpose of removing the viscera is achieved. Nevertheless, the invention is equally applicable to wild and artificially cultured salmon.

According to the physiological characteristics of salmon, the core technology of the invention is as follows: when the salmon lines up to reach the sausage removing station, the sausage removing device extends into the fish belly through the fish mouth, the multi-blade extends out of the tail end of the sausage removing device, and the multi-blade rotates to cut off the fish sausage; the belly is then dissected by a laparotomy knife and the viscera fall out of the belly under the action of gravity. When the fish intestines are cut off, water with certain pressure can be sprayed into the fish belly from the intestines removing device, so that the fish belly can be cleaned, and the internal organs can be promoted to fall off from the fish belly smoothly. When the intestines are manually removed, the abdomen of the fish is firstly cut off, then the intestines close to the fish mouth are cut off, and finally the internal organs are completely removed; before the salmon belly is cut, a special tool is adopted to stretch into the salmon from a fish mouth, and the fish intestines are cut off, so that the automation of quickly cleaning the salmon is realized.

As shown in fig. 1, the principle structure of the salmon viscera cleaning device of the invention is illustrated. A salmon viscera cleaning device, comprising:

the positioning mechanism 3 is arranged on the conveying mechanism and used for bearing and positioning the salmon to be treated, and the lower part of the positioning mechanism is provided with a belly cutting groove;

the conveying mechanism is used for driving the positioning mechanism 3 arranged on the conveying mechanism to move, so that the positioning mechanism 3 is conveyed to the intestine removing station;

the sausage removing mechanism 4 is positioned at the sausage removing station, a blade is arranged at the tail end of the sausage removing mechanism 4, when the positioning mechanism 3 bearing the salmon to be processed is conveyed to the corresponding sausage removing station, the sausage removing mechanism 4 extends into the fish mouth of the salmon to be processed, the salmon enters the fish belly through the fish mouth, and the blade at the tail end rotates to cut off the fish sausages;

and the belly cutting knife cuts the belly of the salmon to be treated through the belly cutting groove so as to enable the fish intestines of the salmon to be treated to fall from the belly.

The conveying mechanism comprises at least two rollers 1, conveying belts 2 are arranged on the two rollers 1, the conveying belts 2 are driven to rotate by driving at least one roller 1 to drive the conveying belts 2 to move, the positioning mechanisms 3 are arranged on the conveying belts 2, and the conveying belts below the belly cutting grooves of the positioning mechanisms are hollow.

The roller 1 drives the conveyor belt 2 to move to the sausage removing station, the back of the salmon to be treated faces upwards, the belly of the salmon faces downwards, the salmon is placed in the positioning mechanism 3 and is squeezed tightly, and after the sausage removing mechanism 4 extends into a fish mouth, the blade extends out and rotates to cut off the sausages.

As shown in fig. 2, illustrating the present invention in a bowel removal station. After the positioning mechanism 3 reaches the intestine removing station, the intestine removing mechanism 4 is fed along the axis and extends into the fish mouth through the positioning mechanism 3, the gear 8 rotates and drives the gear 4-5 to rotate, so that the blade 4-7 is screwed out, subsequently, the gear 7 and the gear 8 rotate simultaneously, and the threaded rod 4-4 and the outer tube 4-2 are kept relatively static, namely the blade 4-7 and the outer tube 4-2 are kept relatively static. At this time, the blade extending out of the outer tube 4-2 is rotated to cut the fish intestine. Subsequently, the abdominal cutter 5 is operated with the aid of the camera 6 to incise the abdomen of the salmon. The electromagnet (not shown for simplicity) drives the magnetic blocks 3-8 to move outwards, so that the two lower partition plates 3-7 move outwards, and the fish intestines fall under the action of gravity.

As shown in FIG. 3, the structure of the bowel removal mechanism of the present invention is illustrated. The intestine removing mechanism comprises an outer tube 4-2, an outer tube gear 4-3, a threaded rod 4-4, a threaded rod gear 4-5 and a blade 4-7, wherein the outer tube gear 4-3 is fixed on the outer tube 4-2, the threaded rod 4-4 extends into the outer tube 4-2, the blade 4-7 is arranged in front of the threaded rod 4-4 in a retractable manner, a knife groove for extending the blade 4-7 is formed in the outer tube 4-2, and the threaded rod gear 4-5 is fixed on the threaded rod 4-4; the outer tube gear 4-3 and the threaded rod gear 4-5 are driven by corresponding gears.

The front end of the outer tube 4-2 is connected with a tip 4-1, the tip 4-1 is in threaded fit with the outer tube 4-2, a water outlet hole is formed in the front end of the tip 4-1, the threaded rod 4-4 is hollow, the water outlet hole is communicated with a hollow inner cavity of the threaded rod 4-4, and water is injected into the threaded rod 4-4 and sprayed out of the water outlet hole.

As shown in fig. 4 and 5, the structure of the blade of the present invention is illustrated. In the embodiment, a three-blade is taken as an example, the blade is provided with a blade bulge 4-7-1, the front end of the threaded rod 4-4 is provided with a plane thread groove 4-4-1, the blade bulge 4-7-1 is embedded into the plane thread groove 4-4-1, and the blade 4-7 is driven to stretch and retract by the rotation of the threaded rod 4-4. The through hole 4-4-2 is a water injection channel, and the movable joint 4-6 (movably connected with the threaded rod 4-4) is connected to the threaded rod 4-4 and is externally connected with a water pipe. The mechanism principle of the blade is the same as that of a three-grab chuck of a machine tool. When the threaded rod 4-4 rotates forwards and backwards, the blade 4-7 extends out of the blade gap 4-1-2 or retracts into the outer tube 4-2.

As shown in fig. 6, a partial structure of the tip and the outer tube is illustrated. The center 4-1 is connected with the outer tube 4-2 through threads, and the blade 4-7 is embedded into the thread groove 4-4-1 through the blade bulge 4-7-1 and connected with the threaded rod 4-4. The blade slot protrusion 4-1-1 engages the blade slot 4-7-3 to ensure that the blade 4-7 moves outward in a fixed direction toward the blade slot 4-1-2 on the outer tube 4-2 (the blade 4-7 moves inward when the threaded rod 4-4 is reversed).

As shown in fig. 7, 8 and 9, the structure of the positioning mechanism is illustrated. The positioning mechanism comprises a fish tank frame 3-9, a pair of upper partition plates 3-4 and a pair of lower partition plates 3-7, wherein the upper partition plates 3-4 and the corresponding lower partition plates 3-7 are positioned on the same side, the pair of upper partition plates 3-4 and the pair of lower partition plates 3-7 are both connected with the fish tank frame 3-9, the belly cutting groove is formed between the lower parts of the pair of lower partition plates 3-7, and the pair of lower partition plates 3-7 are respectively hinged with two sides of the fish tank frame 3-9.

The upper partition plates 3-4 are correspondingly provided with sliding blocks 3-3 one by one, the fish tank frame 3-9 is provided with a guide rail 3-2 for the sliding blocks 3-3 to slide, the sliding blocks can slide on the guide rail 3-2 in a reciprocating manner, and springs 3-1 are arranged between the outer side surfaces of the upper partition plates 3-4 and the fish tank frame 3-9.

The outer side surface of the lower partition plate 3-7 is provided with a magnetic block 3-8 and an electromagnet matched with the magnetic block 3-8, and the electromagnet is electrified to attract the magnetic block 3-8 so as to drive the lower partition plate 3-7 to move outwards.

The two ends of the fish tank frame 3-9 are respectively provided with an end plate, wherein the end plate at one end is provided with a fish mouth opening for the intestine removing mechanism to extend into, and the fish mouth fixing mechanism 3-5 is arranged at the opening.

In the positioning mechanism 3, a sliding block 3-3 is fixed on an upper partition plate 3-4, the sliding block 3-3 can slide on a guide rail 3-2 in a reciprocating manner, and the guide rail 3-2 is fixed on a fish tank base frame 3-9. When the salmon is put in, the upper partition plate 3-4 is opened towards two sides, and after the position of the salmon is fixed, the upper partition plate 3-4 clamps the salmon tightly under the restoring force of the spring 3-1. Then the camera 6 detects the position of an ovulation hole of the salmon, the belly cutter 5 moves towards the direction of the head of the salmon along the position of the ovulation hole to cut the belly of the salmon, the electromagnet is electrified (not shown in the figure for the sake of clear view), the magnetic blocks 3-8 move towards two sides, the two lower partition plates 3-7 are driven to move outwards, and the salmon intestines fall along with the magnetic blocks 3-8. The lower partition plate 3-7 is connected with the fish tank base frame 3-9 through a damping hinge 3-6 (after fish intestines fall off, the lower partition plate 3-7 is reset under the action of the damping hinge 3-6). After the fish intestines fall off, the power of the electromagnet is cut off, and the lower partition plates 3-7 are restored to the original positions.

Although the embodiments have been described and illustrated separately, it will be apparent to those skilled in the art that alternatives to and integrations of the embodiments may be made as part of the common general knowledge, and reference may be made to one of the embodiments without explicit recitation.

The foregoing is illustrative of the preferred embodiments of the present invention only and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to vary. In general, all changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.

Claims

1. A salmon viscera cleaning device, comprising:

the positioning mechanism (3) is arranged on the conveying mechanism and used for bearing and positioning the salmon to be treated, and the lower part of the positioning mechanism is provided with a belly cutting groove;

the conveying mechanism is used for driving the positioning mechanism (3) arranged on the conveying mechanism to move, so that the positioning mechanism (3) is conveyed to the intestine removing station;

the sausage removing mechanism (4) is positioned at the sausage removing station, a blade is arranged at the tail end of the sausage removing mechanism (4), when the positioning mechanism (3) bearing the salmon to be processed is conveyed to the corresponding sausage removing station, the sausage removing mechanism (4) extends into a fish mouth of the salmon to be processed, the salmon enters a fish belly through the fish mouth, and the blade at the tail end of the sausage cutting mechanism rotates to cut off the fish sausage;

a belly cutting knife (5) for cutting the belly of the salmon to be treated through the belly cutting groove so as to enable the fish intestines of the salmon to be treated to fall off from the belly;

the intestine removing mechanism comprises an outer tube (4-2), an outer tube gear (4-3), a threaded rod (4-4), a threaded rod gear (4-5) and a blade (4-7), wherein the outer tube gear (4-3) is fixed on the outer tube (4-2), the threaded rod (4-4) extends into the outer tube (4-2), the blade (4-7) is mounted in front of the threaded rod (4-4) in a retractable manner, a knife groove for extending the blade (4-7) is formed in the outer tube (4-2), and the threaded rod gear (4-5) is fixed on the threaded rod (4-4); the outer tube gear (4-3) and the threaded rod gear (4-5) are driven by corresponding gears;

conveying mechanism includes two at least cylinders (1) be equipped with conveyer belt (2) on two cylinders (1), rotate through driving at least one cylinder (1) in order to drive conveyer belt (2) motion, positioning mechanism (3) set up in on conveyer belt (2), positioning mechanism (3) cut the conveyer belt fretwork of abdomen groove below.

2. The salmon viscera cleaning device of claim 1, characterized in that: the sausage removing mechanism (4) is also provided with a water spraying channel, and after the belly cutting of the salmon to be treated is completed, water is sprayed into the fish belly, so that the fish belly is cleaned and the falling of the fish sausages is accelerated.

3. The salmon viscera cleaning device of claim 1, wherein: the positioning mechanism comprises a fish tank rack (3-9), a pair of upper partition plates (3-4) and a pair of lower partition plates (3-7), the upper partition plates (3-4) and the corresponding lower partition plates (3-7) are positioned on the same side, the pair of upper partition plates (3-4) and the pair of lower partition plates (3-7) are connected with the fish tank rack (3-9), the belly cutting groove is formed between the lower parts of the pair of lower partition plates (3-7), and the pair of lower partition plates (3-7) are hinged to two sides of the fish tank rack (3-9) respectively.

4. The salmon viscera cleaning device of claim 3, characterized in that: the fish tank is characterized in that sliding blocks (3-3) are correspondingly arranged on the upper partition plates (3-4) one by one, guide rails (3-2) for the sliding blocks (3-3) to slide are arranged on the fish tank rack (3-9), the sliding blocks can slide on the guide rails (3-2) in a reciprocating mode, and springs (3-1) are arranged between the outer side surfaces of the upper partition plates (3-4) and the fish tank rack (3-9).

5. The salmon viscera cleaning device of claim 4, which is characterized in that: the outer side surface of the lower partition plate (3-7) is provided with a magnetic block (3-8), an electromagnet matched with the magnetic block (3-8) is arranged, and the electromagnet is electrified to attract the magnetic block (3-8), so that the lower partition plate (3-7) is driven to move outwards.

6. The salmon viscera cleaning device of claim 5, which is characterized in that: the two ends of the fish tank frame (3-9) are respectively provided with an end plate, wherein the end plate at one end is provided with an opening for the bowel removing mechanism to extend into the fish mouth, and the opening is provided with a fish mouth fixing mechanism (3-5).

7. The salmon viscera cleaning device of claim 1, wherein: the blade is provided with a blade bulge (4-7-1), the front end part of the threaded rod (4-4) is provided with a plane thread groove (4-4-1), the blade bulge (4-7-1) is embedded into the plane thread groove (4-4-1), and the blade (4-7) is driven to stretch by the rotation of the threaded rod (4-4).

8. The salmon viscera cleaning device of claim 7, which is characterized in that: the front end of the outer tube (4-2) is connected with a tip (4-1), the tip (4-1) is in threaded fit with the outer tube (4-2), a water outlet hole is formed in the front end of the tip (4-1), the threaded rod (4-4) is hollow, the water outlet hole is communicated with a hollow inner cavity of the threaded rod (4-4), and water is injected into the threaded rod (4-4) and sprayed out of the water outlet hole.