阅读说明：本技术 一种带有浮物吸入装置的海产品加工设备 (Marine product processing equipment with floater suction device ) 是由 李文杰 李晓宁 于 2021-11-04 设计创作，主要内容包括：本发明属于海产品加工技术领域,具体涉及一种带有浮物吸入装置的海产品加工设备,包括架体、设置于所述架体上部的清洗传送装置以及对所述清洗传送装置上放置的海产品进行清洗的喷淋组件,所述架体的底部设置有带有腔体的收集箱,所述收集箱中设置有过滤板和位于所述过滤板一侧的吸入装置,所述吸入装置中开设有吸入口和排气口,所述吸入口朝向所述过滤板的上部,所述吸入装置中具有容置腔体,本发明解决了现有加工设备在对海产品清洗后所产生的悬浮泡沫得不到有效清洗,时间长了易生细菌,对食品安全产生严重危害,尤其是该泡沫与需要二次处理的收集物混合在一起后,增加后续处理工序,给加工生产带来不必要的麻烦的问题。(The invention belongs to the technical field of marine product processing, and particularly relates to marine product processing equipment with a floating object suction device, which comprises a frame body, a cleaning and conveying device arranged at the upper part of the frame body, and a spraying assembly for cleaning marine products placed on the cleaning and conveying device, wherein a collecting box with a cavity is arranged at the bottom of the frame body, a filter plate and a suction device positioned on one side of the filter plate are arranged in the collecting box, a suction inlet and an exhaust outlet are arranged in the suction device, the suction inlet faces the upper part of the filter plate, and the suction device is provided with an accommodating cavity body. The subsequent treatment procedures are added, and unnecessary troubles are brought to the processing production.)

1. A marine product processing equipment with floater suction device which characterized in that: comprises a frame body (1), a cleaning and conveying device (2) arranged at the upper part of the frame body (1) and a spraying assembly (3) for cleaning marine products placed at the upper end of the cleaning and conveying device (2), wherein a collecting box (4) with a cavity is arranged at the bottom of the frame body (1), a filter plate (41) and a suction device (5) positioned at the side part of the filter plate (41) are arranged in the collecting box (4), a suction inlet (51) and an exhaust outlet (52) are arranged in the suction device (5), the suction inlet (51) faces the upper part of the filter plate (41), an accommodating cavity (53) is arranged in the suction device (5), a rotating rod (54), blades (55) sleeved at the periphery of the rotating rod (54) and a power assembly for driving the rotating rod (54) to rotate are arranged in the accommodating cavity (53), the periphery of paddle (55) still is provided with isolation barrel (56).

2. A seafood processing apparatus with a float suction device according to claim 1, wherein: still be provided with in collecting box (4) and scrape subassembly (6), scrape subassembly (6) be provided with in the outside of suction device (5) and with support body (1) swing joint, scrape subassembly (6) including push-pull strip (61), connect in push-pull strip (61) head scrape from board (62), connect in link (63) and rocker mechanism (64) of push-pull strip (61) afterbody, be provided with arch (641) on rocker mechanism (64), seted up in link (63) be used for with arch (641) complex runway shape through-hole (631).

3. A seafood processing apparatus with a float suction device according to claim 2, wherein: the collecting box (4) is further provided with an intermittent shaking assembly (7), a toothed groove (611) is formed in the pushing and pulling strip (61), the intermittent shaking assembly (7) comprises a push-pull gear (71) meshed with the toothed groove (611) and an intermittent reciprocating mechanism (72) connected with the side face of the push-pull gear (71), a swinging transmission piece (8) is connected onto the intermittent reciprocating mechanism (72), a connecting shaft (411) is arranged in the filter plate (41), the filter plate (41) is movably connected with the frame body (1) through the connecting shaft (411), and one end of the connecting shaft (411) is connected with the swinging transmission piece (8).

4. A seafood processing apparatus with a float suction device according to claim 3, wherein: the swing transmission piece (8) comprises a driving gear (81) connected with the intermittent reciprocating mechanism (72), a driven gear (82) connected with a connecting shaft (411) arranged in the filter plate (41) and a connecting toothed belt (83), and the driving gear (81) and the driven gear (82) are connected through the connecting toothed belt (83).

5. A seafood processing apparatus with a float suction device according to claim 1, wherein: wash conveyer (2) and include a plurality of rolling roller (21), motor (22) and toothed belt (25), rolling roller (21) with support body (1) upper end is connected, motor (22) connect in the outside of support body (1), the head of motor (22) is connected with gearbox body (23), be connected with fluted disc (24) on gearbox body (23), every be close to in rolling roller (21) the one end of motor (22) is connected with gear (211), fluted disc (24), gear (211) all with toothed belt (25) swing joint.

6. A seafood processing apparatus with a float suction device according to claim 1, wherein: spray assembly (3) include rectangular connection frame (31), a plurality of spray header (32), rectangular connection frame (31) and a plurality of spray header (32) be equidistant connect in the lower part of rectangular connection frame (31), every still be provided with a plurality of shower heads (33) on spray header (32).

7. A seafood processing apparatus with a float suction device according to claim 6, wherein: the two sides of the frame body (1) are connected with spraying support rods (30), and the rectangular connecting frame (31) is connected with the frame body (1) through the spraying support rods (30).

8. A seafood processing apparatus with a float suction device according to claim 6, wherein: the spray header (32) is U type, the lower extreme of rectangle link span (31) is provided with a plurality of loop bars (34), the both ends of spray header (32) respectively with loop bar (34) sliding connection.

9. A seafood processing apparatus with a float suction device according to claim 2, wherein: the scraping assembly (6) is further provided with at least two limiting seats (65), and the limiting seats (65) are sleeved on the periphery of the push-pull strip (61) and connected with the frame body (1).

10. A seafood processing apparatus with a float suction device according to claim 2, wherein: the section of the scraping plate (62) is triangular, and a baffle plate (J) is further connected to the scraping plate (62).

Technical Field

The invention belongs to the technical field of marine product processing, and particularly relates to marine product processing equipment with a floater suction device.

Background

Seafood refers to a product available for eating or use in the ocean, and is very wide ranging, most of which refer to marine animals, marine plants, including marine algae: hair weeds, laver, kelp, shrimps: the lobster, young lobster, and sea food are popular with people due to their unique taste and high nutritive value, and are often seen on dining tables.

After the marine products are taken from the sea, the marine products need to be cleaned and processed to be eaten by people, and the cleaning is mainly used for removing silt on the marine products. When the density of shellfish and fish is high, the impurities of shells, fish scales and the like fall off too much, and in addition, the discharge is much, foam is easily generated, in addition, the situation that the shellfish dies is not lacked in the processing of marine products, even the shellfish becomes seriously rotten and smells, the rotten dead body taste exists in water, and the situation causes the increase of foam.

Chinese patent with application number CN202010634276.0 discloses a marine product processing and cleaning device, which comprises a supporting bottom plate and a cleaning main body, wherein the cleaning main body is connected with the supporting bottom plate through a plurality of connecting rods I, the lower end of the cleaning main body is connected with a water outlet pipe, the water outlet pipe is provided with a water outlet pump, the water outlet pipe is provided with a control valve I, a cleaning mechanism comprises a cleaning motor I, the cleaning motor I is fixedly connected with the cleaning main body, the rotating part of the cleaning motor I is connected with a cleaning rotary drum I, the interior of the cleaning rotary drum I is fixedly connected with a plurality of rows of cleaning parts, each cleaning part comprises a connecting rod II, the connecting rod II is fixedly connected with the cleaning rotary drum I, the other end of the connecting rod II is connected with a cleaning brush, silt filtering holes are uniformly distributed on the cleaning rotary drum I, the cleaning motor II is fixedly connected with the cleaning main body, and the rotating part of the cleaning motor II is connected with a cleaning rotating shaft, the cleaning rotating shaft is provided with a plurality of irregular cleaning plates and further comprises a cleaning rotating drum II, and a cleaning soft layer is arranged on the cleaning rotating drum.

However, the processing equipment in the prior art cannot effectively clean the suspended foam generated after the marine products are cleaned, the time is long, bacteria are easy to grow, serious harm is caused to food safety, and particularly after the foam is mixed with the collected materials which need secondary treatment, subsequent treatment procedures are added, and unnecessary troubles are brought to processing and production.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides marine product processing equipment with a floater suction device, which is used for solving the problems that suspended foam generated by the existing processing equipment after marine products are cleaned cannot be effectively cleaned, bacteria are easy to grow for a long time, serious harm is caused to food safety, and especially after the foam is mixed with collected objects needing secondary treatment, subsequent treatment procedures are added, and unnecessary troubles are caused to processing and production.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention relates to a marine product processing device with a floater suction device, which comprises a frame body, a cleaning and conveying device arranged at the upper part of the frame body and a spraying assembly for cleaning marine products placed on the cleaning and conveying device, wherein a collecting box with a cavity is arranged at the bottom of the frame body, a filter plate and a suction device positioned on one side of the filter plate are arranged in the collecting box, a suction inlet and an exhaust outlet are arranged in the suction device, the suction inlet faces the upper part of the filter plate, the suction device is internally provided with an accommodating cavity, a rotating rod, a paddle sleeved on the periphery of the rotating rod and a power assembly for driving the rotating rod to rotate are arranged in the accommodating cavity, and an isolating cylinder body is also arranged on the periphery of the paddle.

Further, still be provided with in the collection box and scrape the subassembly, scrape the subassembly be provided with in suction device's the outside and with support body swing joint, scrape the subassembly including push-pull strip, connect in the scrape from the board of push-pull strip head, connect in the link member and the rocker mechanism of push-pull strip afterbody, the last arch that is provided with of rocker mechanism, set up in the link member be used for with protruding complex runway shape through-hole.

Furthermore, an intermittent shaking assembly is further arranged in the collecting box, a toothed groove is formed in the push-pull strip, the intermittent shaking assembly comprises a push-pull gear meshed with the toothed groove and an intermittent reciprocating mechanism connected with the side face of the push-pull gear, a swinging transmission part is connected to the intermittent reciprocating mechanism, a connecting shaft is arranged in the filter plate, the filter plate is movably connected with the frame body through the connecting shaft, and one end of the connecting shaft is connected with the swinging transmission part.

Further, the swing transmission part comprises a driving gear connected with the intermittent reciprocating mechanism, a driven gear connected with a connecting shaft arranged in the filter plate and a connecting toothed belt, and the driving gear and the driven gear are connected through the connecting toothed belt.

Further, wash conveyer includes a plurality of rolls roller, motor and toothed belt, the roll roller with the support body upper end is connected, the motor connect in the outside of support body, the head of motor is connected with the gearbox body, be connected with the fluted disc on the gearbox body, every the roll roller is close to the one end of motor is connected with the gear, fluted disc, gear all with toothed belt swing joint.

Further, the spray assembly comprises a rectangular connecting frame and a plurality of spray pipes, the rectangular connecting frame is connected with the plurality of spray pipes at equal intervals, and each spray pipe is provided with a plurality of spray heads.

Further, both sides of the frame body are connected with spraying support rods, and the rectangular connecting frame is connected with the frame body through the spraying support rods.

Further, the spray header is the U type, the lower extreme of rectangle link is provided with a plurality of loop bars, the both ends of spray header respectively with loop bar sliding connection.

Furthermore, the scraping assembly is also provided with at least two limiting seats, and the limiting seats are sleeved on the periphery of the push-pull strip and connected with the frame body.

Furthermore, the section of the scraping plate is triangular, and a baffle plate is connected to the scraping plate.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can place the marine products in washing the conveying appliance to transport, the spray assembly washes the marine products, get rid of the foreign matter on the surface of marine products, wherein roll the roller and not merely play a transport role, and can turn over the marine products, expose the difficult part to wash in the marine products piled up in a large number, make washing more thorough, wherein, such as shellfish with body, fish products of numerous scales, shell, fish scale and marine product peculiar foam that the washing process drops to the filter plate of the bottom end through the interval of two adjacent roll rollers, the suction device can suck the foam accumulated on the filter plate away, prevent excessive foam from remaining in the collection, cause the food hygiene problem;

2. the scraping component can scrape a large amount of foam to one side of the suction device, so that the problem that the suction device can only suck the foam on one side of the filter plate is solved, the foam on the filter plate is removed more thoroughly, and the condition that no foam is sucked and no load is generated near the suction device is avoided;

3. the intermittent shaking assembly can swing the filter plate through the intermittent reciprocating mechanism in the moving process of the push-pull strip, so that moisture mixed with a large amount of collected materials accumulated on the filter plate can be removed, and the condition that the collected materials are too much in residual moisture and bacteria around equipment are bred due to dripping of water liquid in the process of manually transferring the collected materials to the external secondary treatment is avoided.

Drawings

FIG. 1 is a schematic partial perspective view of a marine product processing apparatus with a float suction device according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a marine product processing apparatus with a float suction device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a half-section of a suction device in an embodiment of the marine product processing apparatus of the present invention with a float suction device;

FIG. 4 is a perspective view of a scraping assembly and a filter plate of a marine product processing apparatus with a float suction device according to an embodiment of the present invention (state one);

FIG. 5 is a perspective view of a scraping assembly and a filter plate of a marine product processing apparatus with a float suction device according to an embodiment of the present invention (state two);

FIG. 6 is a schematic view of a part of the structure of an intermittent reciprocating mechanism and a push-pull bar in an embodiment of the marine product processing apparatus with a float suction device according to the present invention;

FIG. 7 is a schematic diagram of the explosion structure of the intermittent reciprocating mechanism, the oscillating driving member and the filtering plate in the embodiment of the marine product processing equipment with the floater suction device of the present invention;

FIG. 8 is a schematic left side view of a scraper and a baffle of an embodiment of the marine product processing apparatus with a float suction device according to the present invention;

FIG. 9 is a perspective view of a shower assembly in an embodiment of the seafood processing apparatus with a float suction device according to the present invention;

FIG. 10 is a schematic view of a portion of a cleaning conveyor of an embodiment of the seafood processing apparatus with a float suction device according to the invention;

FIG. 11 is a schematic view of a gear, a toothed disc, and a toothed belt of an embodiment of the marine product processing apparatus with a float suction device according to the present invention;

reference numerals in the drawings of the specification include:

the cleaning and conveying device comprises a frame body 1, a cleaning and conveying device 2, a rolling roller 21, a gear 211, a motor 22, a gearbox body 23, a fluted disc 24 and a toothed belt 25;

the spray assembly 3, the spray support rod 30, the rectangular connecting frame 31, the spray water pipe 32, the spray header 33 and the loop bar 34;

the collecting box 4, the filter plate 41 and the connecting shaft 411;

the suction device 5, a suction inlet 51, an exhaust outlet 52, an accommodating cavity 53, a rotating rod 54, a blade 55 and an isolation cylinder 56;

the scraping component 6, the push-pull strip 61, the tooth-shaped groove 611, the scraping plate 62, the linkage member 63, the runway-shaped through hole 631, the rocker arm mechanism 64, the protrusion 641 and the limiting seat 65;

the intermittent shaking assembly 7, the push-pull gear 71, the intermittent reciprocating mechanism 72, the semicircular stirring piece 721, the stirring raised head 722, a notch 723, a rotating block 724, a groove 725 and a main tooth connecting shaft 726;

a swing transmission member 8, a driving gear 81, a driven gear 82, and a connecting toothed belt 83;

a baffle plate J.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example (b):

as shown in fig. 1-11, the seafood processing equipment with a floater suction device according to the present invention comprises a frame body 1, a cleaning and conveying device 2 disposed at the upper portion of the frame body 1, and a spraying assembly 3 for cleaning the seafood placed on the cleaning and conveying device 2, the seafood is placed in the cleaning and conveying device 2 and conveyed, the spraying assembly 3 cleans the seafood to remove the foreign matters on the surface of the seafood, the cleaning and conveying device 2 comprises a plurality of rolling rollers 21, a motor 22 and a toothed belt 25, the rolling rollers 21 are connected with the upper end of the frame body 1, the motor 22 is connected with the outer side of the frame body 1, the head of the motor 22 is connected with a gearbox 23, the gearbox 23 is connected with a toothed disc 24, one end of each rolling roller 21 close to the motor 22 is connected with a gear 211, the toothed disc 24 and the gear 211 are both movably connected with the toothed belt 25, the rolling rollers 21 not only perform a conveying function, the marine products can be turned over, and parts which are not easy to clean in a large number of stacked marine products are exposed, so that the cleaning is more thorough, wherein, for example, shells with shells and fish marine products with scales, shells, scales and special foams of the marine products which are fallen off in the cleaning process fall on a filter plate 41 at the lower end through a gap between two adjacent rolling rollers 21, bristles can be arranged on the rolling rollers 21 and can be integrally or detachably connected to the periphery of the rolling rollers 21, when different marine products are processed, the marine products can be purposefully replaced, when the marine products are processed, the brushing part is set to be soft bristles, and the brushing part can also be set to be rigid bristles for the shellfish products, so that the purpose of turning over the marine products is achieved, and the effect of pre-brushing off special adhesive on the surfaces of the marine products is achieved;

the bottom of the frame body 1 is provided with a collecting box 4 with a cavity, the collecting box 4 is provided with a filter plate 41 and a suction device 5 positioned at one side of the filter plate 41, and the suction device 5 can be arranged in a plurality according to actual requirements, preferably at four edges of the filter plate 41.

The suction device 5 is provided with a suction port 51 and an exhaust port 52, the suction port 51 faces the upper part of the filter plate 41, the suction device 5 is provided with an accommodating cavity 53, the accommodating cavity 53 is provided with a rotating rod 54, a paddle 55 sleeved on the periphery of the rotating rod 54 and a power assembly (not shown in the figure) for driving the rotating rod 54 to rotate, and the periphery of the paddle 55 is further provided with a separation cylinder 56. The suction device 5 sucks the foam accumulated on the filter plate 41, and prevents excessive foam from remaining in the collected material, causing food sanitation problems. Specifically, the suction port 51 and the exhaust port 52 form an air duct, the exhaust port 52 can be disposed outside the frame 1 and can be sleeved with a pocket with a fine hole, the power assembly in the suction device 5 drives the rotating rod 54 to rotate, the blade 55 rotates to suck the air on one side of the filter plate 41 and the foam into the accommodating cavity 53, wherein a conical top (not shown in the figure) with a fine hole can be disposed at the top of the isolation cylinder 56, and the sucked foam is guided into a cavity between the isolation cylinder 56 and the accommodating cavity 53 through the conical top to be collected.

The collection box 4 is further provided with a scraping component 6, the scraping component 6 is arranged on the outer side of the suction device 5 and movably connected with the frame body 1, the scraping component 6 comprises a push-pull strip 61, a scraping plate 62 connected to the head of the push-pull strip 61, a linkage member 63 connected to the tail of the push-pull strip 61 and a rocker mechanism 64, the rocker mechanism 64 is provided with a protrusion 641, and the linkage member 63 is provided with a runway-shaped through hole 631 matched with the protrusion 641. The scraping component 6 can scrape a large amount of foam to one side of the suction device 5, specifically, a handle (not shown in the figure) can be connected to the rocker mechanism 64, the handle is manually rotated to rotate the rocker mechanism 64, the protrusion 641 is used for matching the linkage member 63, the push-pull strip 61 can move back and forth at the upper end of the filter plate 41, meanwhile, the scraping plate 62 connected with the head can scrape the foam to the edge of the filter plate 41 and is close to the suction device 5, the problem that the suction device 5 can only suck the foam on one side of the filter plate 41 is solved, so that the foam on the filter plate 41 can be removed more thoroughly, and the condition that no foam is sucked near the suction device 5 and the foam is unloaded is avoided. The section of the scraping plate 62 is triangular, and the scraping plate 62 is further connected with a baffle J, so that the scraping capability of the scraping plate 62 on foam is enhanced, and the foam is prevented from overflowing from the top of the scraping plate 62. In this case, it is preferable that the suction devices 5 are disposed on both sides of the filter plate 41 in the moving direction of the push-pull bar 61.

The collecting box 4 is also provided with an intermittent shaking assembly 7, the push pull strip 61 is provided with a toothed groove 611, the intermittent shaking assembly 7 comprises a push-pull gear 71 meshed with the toothed groove 611 and an intermittent reciprocating mechanism 72 connected with the side surface of the push-pull gear 71, the intermittent reciprocating mechanism 72 is connected with a swinging transmission piece 8, a connecting shaft 411 is arranged in the filter plate 41, the filter plate 41 is movably connected with the frame body 1 through the connecting shaft 411, and one end of the connecting shaft 411 is connected with the swinging transmission piece 8. Intermittent type shakes subassembly 7, can remove the in-process at push-and-pull strip 61, swings filter 41 through intermittent type reciprocating mechanism 72 for accumulational a large amount of collection object mix with moisture can be got rid of on filter 41, avoids the collection too much because of remaining moisture, transports to outside secondary treatment in-process in the manual work, and the drippage of water liquid arouses breeding of the bacterium around the equipment. Specifically, the intermittent reciprocating mechanism 72 includes a semi-circular shifting member 721, a shifting protrusion 722, and a rotating block 724 having a plurality of notches 723, wherein a groove 725 matching with the shifting protrusion 722 is disposed between adjacent notches 723, and the semi-circular shifting member 721 matches with the notches 723.

The oscillating actuator 8 includes a driving gear 81 connected to the intermittent reciprocating mechanism 72, a driven gear 82 connected to a connecting shaft 411 provided in the filter plate 41, and a connecting toothed belt 83, and the driving gear 81 and the driven gear 82 are connected by the connecting toothed belt 83. The tail of the filter plate 41 can be arc-shaped, the swing radian of the filter plate 41 is enhanced, and the rotating block 724 is provided with a main gear connecting shaft 726 which can be matched with the driving gear 81.

The spray assembly 3 comprises a rectangular connecting frame 31 and a plurality of spray water pipes 32, the rectangular connecting frame 31 and the plurality of spray water pipes 32 are connected to the lower part of the rectangular connecting frame 31 at equal intervals, and a plurality of spray heads 33 are further arranged on each spray water pipe 32. Both sides of the frame body 1 are connected with a spray support rod 30, and a rectangular connecting frame 31 is connected with the frame body 1 through the spray support rod 30. The spray header 32 is U-shaped, the lower end of the rectangular connecting frame 31 is provided with a plurality of loop bars 34, and both ends of the spray header 32 are slidably connected with the loop bars 34 respectively.

The scraping component 6 is further provided with at least two limiting seats 65, and the limiting seats 65 are sleeved on the periphery of the push-pull strip 61 and connected with the frame body 1. The limit seat 65 can ensure that the push-pull strip 61 does not deviate in the moving process, and the limit function is achieved.

The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.