Adjustable lossless ring jet flow fish pump

Abstract

The invention discloses an adjustable lossless annular jet flow fish suction pump, which belongs to the technical field of fish suction equipment, and comprises a working water straight pipe, the outer wall of the working water straight pipe is communicated and connected with a working water inlet pipe, and one end of the working water straight pipe is connected with a conveying mechanism. The other end of the working water straight pipe is sequentially connected with a reducing pipe, a buffering assembly, a throat pipe and a diffusion pipe in a penetrating mode. The diameter of the end, close to the working water straight pipe, of the reducing pipe is larger than that of the other end. The size of the annular nozzle can be adjusted through the flow channel structure of the working water straight pipe, the reducing pipe, the buffer assembly, the throat pipe and the diffusion pipe in cooperation with the telescopic guide assembly. The guide assembly stretches and retracts inside to change the distance between the guide assembly and the inner wall of the reducing pipe, adjustment operation is easy and convenient, and then the width of the annular nozzle is adjusted; the nozzle is narrowed to increase the negative pressure and the conveying speed, and the efficient conveying requirement is met; and the nozzle is widened, so that the negative pressure is reduced to adapt to low-speed conveying of fragile live fish.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fish suction equipment, more particularly to an adjustable non-damaging ring jet flow fish suction pump. BACKGROUND

[0002] The fish suction pump is a key conveying equipment in the fields of aquaculture, fishing and aquatic product processing. Its core function is to form negative pressure through fluid power to realize efficient and continuous conveying of fish-water mixture, and it is widely used in scenarios such as pond cleaning, live fish transfer and aquatic product sorting. Compared with traditional manual fishing or mechanical shovel, the fish suction pump can greatly reduce labor costs, reduce mechanical damage to live fish during transfer, and improve conveying efficiency. It is an important equipment to promote the automation and scale development of the aquatic industry. Its performance directly affects the survival rate of live fish, conveying efficiency and production economy, especially for high-quality live fish farming industry. "Non-damaging conveying" and "precise regulation" are the core technical requirements of the fish suction pump. In the prior art, the fish suction pump is mainly designed based on the principle of jet flow. A high-pressure working water is conveyed to the working water pipe by an external power water pump. The output end of the working water pipe is connected with a converging pipe, and a conveying pipe connected with a suction inlet is arranged inside the working water pipe. The conveying pipe and the inner wall of the converging pipe form an annular nozzle. After the high-pressure water flows through the annular nozzle, a high-speed jet flow is formed, and a negative pressure is generated at the subsequent throat pipe. The fish-water mixture is sucked from the suction inlet, and then the high-speed jet flow and the fish-water mixture are mixed in the throat pipe. After the speed is reduced and the pressure is increased through the diffuser pipe, the fish-water mixture is conveyed to the target position. In order to adapt to the conveying needs of live fish of different specifications, some fish suction pumps adjust the position of the conveying pipe at the suction inlet. By changing the nozzle diameter to control the jet flow speed, the negative pressure size and the conveying efficiency are adjusted. However, the existing fish suction pump has the following disadvantages: 1. The diameter of the annular nozzle of the traditional fish suction pump is fixed. In order to adjust the size of the annular nozzle, the distance between the conveying pipe and the converging pipe needs to be adjusted, which changes the negative pressure and the conveying speed. The adjustment operation is complicated and cannot be dynamically adjusted, which leads to the problem that when facing live fish of different sizes and activities, the conveying efficiency is low or the negative pressure is too large to damage the fish body. 2. The non-damaging protection capability is weak. During the high-speed conveying process of live fish, the live fish is still prone to violent collision with the converging pipe, the throat pipe and other variable diameter parts. Especially when the conveying speed increases, the collision force increases, which leads to the shedding of fish scales and body damage, and the survival rate decreases significantly.

[0003] Therefore, we propose an adjustable non-damaging ring jet flow fish suction pump which is easy to operate and can stably convey. SUMMARY

[0004] 1. Technical problem to be solved The application aims to provide an adjustable non-loss ring jet flow fish suction pump, which solves the technical problems in the background art.

[0005] 2. Technical solution The application provides an adjustable non-loss ring jet flow fish suction pump, which comprises a working water straight pipe, the outer wall of the working water straight pipe is connected with a working water inlet pipe, one end of the working water straight pipe is connected with a conveying mechanism, and the other end of the working water straight pipe is sequentially connected with a taper pipe, a buffer assembly, a throat pipe and a diffusion pipe; the diameter of the taper pipe near the one end of the working water straight pipe is larger than the diameter of the other end. The conveying mechanism comprises a sealing flange connected to the one end of the working water straight pipe, a sleeve fixed to one end of the sealing flange, a fixed pipe inserted and fixed to the end of the sleeve away from the sealing flange, a guide assembly penetratingly connected in the sleeve, the guide assembly being a telescopic pipe body structure, the guide assembly penetratingly connected to the inside of the sealing flange and the working water straight pipe, the one end of the guide assembly arranged in the fixed pipe, the other end of the guide assembly arranged in the taper pipe, and an annular nozzle structure formed between the guide assembly and the inner wall of the taper pipe, the guide assembly penetratingly connected between the inside of the guide assembly and the inside of the buffer assembly, and the distance between the guide assembly and the inner wall of the taper pipe adjusted by the telescopic adjustment, so as to adjust the size of the annular nozzle.

[0006] Further, the guide assembly comprises an inner guide pipe inserted and fixed in the fixed pipe, an outer guide pipe slidingly sleeved on the outer wall of the inner guide pipe, the outer guide pipe slidingly inserted into the inside of the sleeve, the sealing flange and the working water straight pipe, the one end of the outer guide pipe arranged in the taper pipe, the outer guide pipe and the taper pipe located on the same horizontal center line, the other end of the outer guide pipe fixed with a push ring, the push ring slidingly sleeved on the outer wall of the inner guide pipe, the push ring rotatably connected to the screw on one side, the screw threadedly connected to the outside of the sleeve, and the push ring threadedly rotated in the sleeve to push and translate, so that the push ring pushes and translates the outer guide pipe in the working water straight pipe.

[0007] Further, the one end of the fixed pipe is arranged in the inside of the sleeve, the outer wall of the inner guide pipe is sleeved with a telescopic pipe, and the telescopic pipe is connected between the one end of the fixed pipe and the side wall of the push ring.

[0008] Further, the outer wall of the outer guide pipe is penetratingly provided with a through hole, a plurality of through holes are provided along the circumferential direction of the outer guide pipe, and the outer guide pipe is provided with two states by the push ring pushing and translating; In the first state, a gap is provided between the one end of the outer guide pipe and the inner wall of the taper pipe, and the through hole is arranged between the inner wall of the sealing flange and the outer wall of the inner guide pipe; In the second state, the one end of the outer guide pipe is arranged in abutment with the inner wall of the taper pipe, and the through hole is arranged in the working water straight pipe, so that the inner guide pipe is penetratingly connected with the inside of the working water straight pipe.

[0009] Further, the conveying mechanism further comprises a temperature adjusting assembly arranged in the working water straight pipe, and the outer conduit is connected to the temperature adjusting assembly, the outer conduit is sleeved with a positioning ring, the positioning ring is fixed with a plurality of supporting plates, and one side of the supporting plates is fixedly connected to the inner wall of the working water straight pipe.

[0010] Further, the temperature adjusting assembly comprises a semiconductor refrigerator fixed to the outer wall of the outer conduit, the semiconductor refrigerator is in an annular structure, the outer wall of the semiconductor refrigerator is fixed with a plurality of positioning frames, the inner wall of the working water straight pipe is fixed with a plurality of fixed slides, and one side of the positioning frame away from the semiconductor refrigerator is slidably connected to the fixed slide.

[0011] Further, the temperature adjusting assembly further comprises a brushing ring sleeved to the outer wall of the outer conduit, one side of the fixed slide is fixed with a first fixing frame, the first fixing frame is slidably attached to the outer wall of the outer conduit, one side of the first fixing frame is connected to the side wall of the brushing ring, the brushing ring away from the first fixing frame is provided with bristles, the outer wall of the bolt is provided with a threaded section and a smooth section, the threaded section of the bolt is threadedly connected to the inside of the sleeve, and the smooth section of the bolt is arranged in the inside of the sleeve.

[0012] Further, the outer wall of the outer conduit is provided with a plurality of spiral convex tracks, the inner wall of the brushing ring is provided with a plurality of spiral grooves, the spiral convex tracks are slidably connected to the inside of the spiral grooves, the side of the brushing ring close to the first fixing frame is provided with an annular clamping groove, and one side of the first fixing frame is slidably clamped in the inside of the clamping groove.

[0013] Further, the buffer assembly comprises a protection pipe connected through between the taper pipe and the throat pipe, the protection pipe is provided with a stepped groove structure close to the taper pipe, the protection pipe is fixed with an air bag ring in the stepped groove structure, the air bag ring is in a stepped structure close to the taper pipe, the air bag ring is inserted into the taper pipe, and the air bag ring is connected with an inner bag membrane.

[0014] Further, the conveying mechanism further comprises a gas pressure monitor connected through in the inside of the sleeve, a second fixing frame attached to the outer wall of the working water straight pipe, the second fixing frame is fixed with a fixed plate on both sides, the two fixed plates are fixed to the side wall of the sealing flange and the side wall of the taper pipe respectively, a gas guide pipe is connected through between the two fixed plates, the outer wall of the air bag ring is connected through with a second gas pipe, the two ends of the second gas pipe are connected through with the inside of the gas cavity and the gas guide pipe respectively, the outer wall of the push ring is slidably attached to the inner wall of the sleeve, the push ring is provided with an inner pressure cavity separated from the inside of the sleeve close to the outer conduit, the bottom end of the gas pressure monitor is connected through in the inside of the inner pressure cavity, the outer wall of the sleeve is connected through with a first gas pipe, and the two ends of the first gas pipe are connected through with the inside of the inner pressure cavity and the gas guide pipe respectively.

[0015] 3. Beneficial effects One or more technical solutions provided in the technical scheme of the application have at least the following technical effects or advantages: 1. Through the flow channel structure of "working water straight pipe-tapered pipe-buffering assembly-throat pipe-diffusion pipe", combined with the telescopic guide assembly, the size of the annular nozzle is adjusted, the guide assembly changes the distance with the inner wall of the tapered pipe inside and out, and the width of the annular nozzle is adjusted, the nozzle is narrowed to increase the negative pressure and the conveying speed, and the high-efficiency conveying demand is met; the nozzle is widened to reduce the negative pressure, and the low-speed conveying of fragile live fish is adapted; The buffering assembly can buffer the high-speed flowing fish-water mixture, reduce the impact damage, and at the same time, the guide assembly is internally connected with the buffering assembly, so that the fish-water mixture conveying path is smooth, and the conveying efficiency and live fish damage-free demand are considered.

[0016] 2. The through hole structure of the outer guide pipe realizes "conveying-cleaning" dual-function switching, in the first state (conveying), the through hole is located between the sealing flange and the inner guide pipe, which does not affect the fish-water mixture conveying; in the second state (cleaning), the outer guide pipe is attached to the tapered pipe, the through hole enters the inside of the working water straight pipe, the working water can directly enter the outer guide pipe through the through hole, and flows along the inner guide pipe, the protection pipe, the throat pipe and the diffusion pipe in both directions, realizes the automatic flushing of the internal flow channel of the fish suction pump, and can clean the residual impurities without disassembly, so as to ensure the precision of the annular nozzle and the smoothness of the flow channel in the next conveying.

[0017] 3. The positioning ring and the support plate cooperate to fix the outer guide pipe at the center of the working water straight pipe, so that the outer guide pipe is always coaxial with the tapered pipe during telescoping, and the nozzle gap is uniform; the temperature adjusting assembly can adjust the temperature of the outer guide pipe and the working water, temporarily reduces the activity of live fish by reducing the temperature of the environment where the live fish is located, and reduces the collision damage in the conveying process; the temperature adjusting assembly moves synchronously with the outer guide pipe, so as to ensure that the temperature adjusting range covers the whole conveying process of the fish-water mixture, and the adjusting stability and live fish protection effect are considered. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the adjustable non-damaging annular jet flow fish suction pump of the present application.

[0019] Figure 2 It is a schematic diagram of the overall internal structure of the present application.

[0020] Figure 3 It is a schematic diagram of the connection structure of the guide assembly of the present application.

[0021] Figure 4 It is a sectional view of the internal connection structure of the guide assembly and the sleeve of the present application.

[0022] Figure 5 It is a sectional view of the internal structure of the buffering assembly of the present application.

[0023] Figure 6 It is a sectional view of the connection between the internal pressure cavity of the sleeve and the internal air cavity of the buffering assembly of the present application.

[0024] Figure 7 The temperature adjusting assembly and the outer catheter connecting structure of the present application.

[0025] Figure 8 The brush ring and the first fixing frame connecting structure of the present application.

[0026] Figure 9 The structure cross-sectional view of the whole in the working conveying state of the present application.

[0027] Figure 10 The structure cross-sectional view of the whole in the closed cleaning state of the present application.

[0028] Figure 11 The structure cross-sectional view of the whole in the brush ring brushing the outer catheter port state of the present application.

[0029] Label explanation in the figure: 100, conveying mechanism; 110, fixed tube; 120, guiding assembly; 121, inner catheter; 122, telescopic tube; 123, push ring; 124, outer catheter; 1241, through hole; 1242, spiral convex rail; 125, bolt; 130, sleeve; 131, first air pipe; 140, air pressure monitor; 150, sealing flange; 160, temperature adjusting assembly; 161, semiconductor refrigerator; 162, positioning frame; 163, fixed slide rail; 164, first fixing frame; 165, brush ring; 1651, clamping groove; 1652, spiral groove; 170, second fixing frame; 180, air guide pipe; 190, fixed plate; 200, working water straight pipe; 210, positioning ring; 220, support plate; 300, working water inlet pipe; 400, tapered pipe; 500, buffer assembly; 510, protective pipe; 520, second air pipe; 530, air bag ring; 540, inner bag membrane; 600, throat pipe; 700, diffusion pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it needs to be understood that the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Referring to Figures 1-11 The embodiment of the present application provides a kind of adjustable lossless ring jet flow fish pump, including working water straight pipe 200, the working water inlet pipe 300 is connected with the through connection of outer wall of working water straight pipe 200, working water straight pipe 200 one end is connected with conveying mechanism 100, working water straight pipe 200 other end is sequentially connected with taper pipe 400, buffer assembly 500, throat pipe 600 and diffusion pipe 700 in sequence, taper pipe 400 is close to the diameter of one end of working water straight pipe 200 greater than the diameter of other end; Conveying mechanism 100, including the sealing flange 150 connected to the one end of working water straight pipe 200, the one end of sealing flange 150 is fixed with sleeve 130, sleeve 130 is inserted and fixed with fixed pipe 110 away from the one end of sealing flange 150, sleeve 130 is connected with guide assembly 120 in the inside, guide assembly 120 is telescopic pipe body structure, guide assembly 120 is connected in the inside of sealing flange 150 and working water straight pipe 200, guide assembly 120 one end is arranged in the inside of fixed pipe 110, guide assembly 120 other end is arranged in the inside of taper pipe 400, and annular nozzle structure is formed between the inner wall of taper pipe 400, guide assembly 120 inside and buffer assembly 500 inside are connected in sequence, guide assembly 120 is adjusted with the distance between the inner wall of taper pipe 400 by telescopic adjustment, to adjust the size of annular nozzle; Through the flow channel structure of "working water straight pipe 200-tapered pipe 400-buffer assembly 500-throat pipe 600-diffuser pipe 700", combined with the telescopic guide assembly 120, the size of the annular nozzle can be adjusted. The guide assembly 120 changes the distance with the inner wall of the tapered pipe 400 by telescoping inside, which is simple to adjust the width of the annular nozzle: the narrower nozzle can increase the negative pressure and the conveying speed to meet the high-efficiency conveying demand; the wider nozzle reduces the negative pressure to adapt to the low-speed conveying of fragile live fish. The buffer assembly 500 can buffer the high-speed flowing fish-water mixture and reduce impact damage, and at the same time, the guide assembly 120 is internally through the buffer assembly 500, which ensures the smoothness of the fish-water mixture conveying path, and meets the needs of conveying efficiency and live fish without damage.

[0034] In the embodiment, the guide assembly 120 includes an inner guide pipe 121 fixedly inserted into the fixed pipe 110, an outer guide pipe 124 slidingly sleeved on the outer wall of the inner guide pipe 121, the outer guide pipe 124 slidingly inserted into the sleeve 130, the sealing flange 150 and the working water straight pipe 200, one end of the outer guide pipe 124 is arranged in the tapered pipe 400, the outer guide pipe 124 and the tapered pipe 400 are located on the same horizontal center line, the other end of the outer guide pipe 124 is fixedly provided with a push ring 123, the push ring 123 is slidingly sleeved on the outer wall of the inner guide pipe 121, one side of the push ring 123 is rotationally connected with a bolt 125, the bolt 125 is threadedly connected outside the sleeve 130, and the push ring 123 is pushed and translated by threadedly rotating the bolt 125 inside the sleeve 130, so that the push ring 123 pushes the outer guide cylinder to translate inside the working water straight pipe 200; The guide assembly 120 adopts the telescopic structure of "inner guide pipe 121-outer guide pipe 124-push ring 123-bolt 125", the bolt 125 is threadedly connected with the sleeve 130, and rotating the bolt 125 can drive the push ring 123 to slide the outer guide pipe 124 along the inner guide pipe 121, realizing linear adjustment of the width of the annular nozzle, and the adjustment accuracy can be controlled within millimeter level; the outer guide pipe 124 is coaxially arranged with the tapered pipe 400, which ensures the uniformity of the annular nozzle gap during adjustment, avoids the negative pressure deviation caused by uneven nozzle, ensures the stability of the fish-water mixture conveying speed, and solves the problems of traditional adjustment mode such as complicated operation and low precision.

[0035] In the embodiment, one end of the fixed pipe 110 is arranged inside the sleeve 130, the outer wall of the inner pipe 121 is sleeved with the telescopic pipe 122, and the telescopic pipe 122 is connected between one end of the fixed pipe 110 and the side wall of the push ring 123; the telescopic pipe 122 is connected between the fixed pipe 110 and the push ring 123, forms a closed channel, completely covers the sliding gap between the inner pipe 121 and the outer pipe 124, prevents fish-water mixture from leaking and impurities from invading; the telescopic pipe 122 telescopes synchronously with the push ring 123, does not affect the adjusting action of the outer pipe 124, guarantees stable negative pressure and conveying efficiency, simultaneously avoids adjusting failure caused by impurities being stuck in components, and prolongs the service life of the equipment.

[0036] In the embodiment, the outer wall of the outer pipe 124 is provided with through holes 1241, a plurality of through holes 1241 are arranged along the circumferential direction of the outer pipe 124, and the outer pipe 124 is provided with two states through the push ring 123. In the first state, a gap is arranged between one end of the outer pipe 124 and the inner wall of the tapered pipe 400, and the through holes 1241 are arranged between the inner wall of the sealing flange 150 and the outer wall of the inner pipe 121. In the second state, one end of the outer pipe 124 is arranged in close contact with the inner wall of the tapered pipe 400, and the through holes 1241 are arranged inside the working water straight pipe 200, so that the inner pipe 121 is connected with the inside of the working water straight pipe 200. The structure of the through holes 1241 of the outer pipe 124 realizes “conveying-cleaning” dual-function switching. In the first state (conveying), the through holes 1241 are located between the sealing flange 150 and the inner pipe 121, and do not affect the conveying of the fish-water mixture; in the second state (cleaning), the outer pipe 124 is in close contact with the tapered pipe 400, the through holes 1241 enter the inside of the working water straight pipe 200, the working water can directly enter the outer pipe 124 through the through holes 1241, and flows bidirectionally along the inner pipe 121, the protection pipe 510, the throat pipe 600 and the diffusion pipe 700, realizes automatic flushing of the flow channel inside the fish suction pump, removes residual impurities without disassembly, and guarantees the precision of the annular nozzle and the smoothness of the flow channel in the next conveying.

[0037] In the embodiment, the conveying mechanism 100 further includes a temperature adjusting assembly 160 arranged inside the working water straight pipe 200, the outer pipe 124 is connected inside the temperature adjusting assembly 160, the outer wall of the outer pipe 124 is sleeved with a positioning ring 210, a plurality of support plates 220 are fixed on the outer wall of the positioning ring 210, and one side of the support plate 220 is fixedly connected to the inner wall of the working water straight pipe 200. The positioning ring 210 cooperates with the support plate 220 to fix the outer conduit 124 at the center of the working water straight pipe 200, so that the outer conduit 124 is coaxial with the tapered pipe 400 during extension and retraction, and the nozzle gap is uniform; the temperature adjusting assembly 160 can adjust the temperature of the outer conduit 124 and the working water, so as to reduce the activity of the live fish by reducing the temperature of the environment in which the live fish is located, and reduce the collision damage in the conveying process; the temperature adjusting assembly 160 moves synchronously with the outer conduit 124, so as to ensure that the temperature adjusting range covers the whole conveying process of the fish-water mixture, and the adjusting stability and the protection effect of the live fish are considered.

[0038] In this embodiment, the temperature adjusting assembly 160 includes a semiconductor refrigerator 161 fixed to the outer wall of the outer conduit 124, the semiconductor refrigerator 161 is in a ring shape, a plurality of positioning frames 162 are fixed to the outer wall of the semiconductor refrigerator 161, and a plurality of fixed sliding rails 163 are fixed to the inner wall of the working water straight pipe 200; the side, away from the semiconductor refrigerator 161, of the positioning frame 162 is slidably connected with the fixed sliding rail 163. The ring-shaped semiconductor refrigerator 161 is directly sleeved on the outer wall of the outer conduit 124, and can move synchronously with the outer conduit 124 during extension and retraction, so as to ensure that the cooling area is always matched with the conveying path of the fish-water mixture; the positioning frame 162 and the fixed sliding rail 163 are slidably connected, so as to limit the movement track of the semiconductor refrigerator 161 and avoid deviation; the ring shape ensures that the temperature of the outer wall of the outer conduit 124 is uniform, and the fish-water mixture can be uniformly cooled during the conveying process, so as to effectively reduce the activity of the live fish and reduce the collision damage during high-speed conveying, and the problem of insufficient coverage range of the traditional fixed temperature adjusting structure is solved.

[0039] In this embodiment, the temperature adjusting assembly 160 further includes a brushing ring 165 sleeved on the outer wall of the outer conduit 124, a first fixed frame 164 is fixed to one side of the fixed sliding rail 163, the first fixed frame 164 is slidably attached to the outer wall of the outer conduit 124, one side of the first fixed frame 164 is connected to the side wall of the brushing ring 165, the brushing ring 165 is provided with bristles on the side, away from the first fixed frame 164, the outer wall of the bolt 125 is provided with a threaded section and a smooth section, the threaded section of the bolt 125 is threadedly connected to the inside of the sleeve 130, and the smooth section of the bolt 125 is arranged in the inside of the sleeve 130. The brushing ring 165 cooperates with the first fixed frame 164, so that the outer conduit 124 can drive the brushing ring 165 to slide along the outer wall thereof during extension and retraction; the bristles can directly clean the port and the outer wall of the outer conduit 124 close to the tapered pipe 400, and remove the sticky attachments; the “threaded section + smooth section” design of the bolt 125, the threaded section is used for accurately adjusting the position of the outer conduit 124, and the smooth section facilitates driving the brushing ring 165 to complete the cleaning action when the outer conduit 124 is pulled, so that automatic cleaning can be realized without disassembly, the accuracy of the annular nozzle gap is ensured, and the equipment maintenance efficiency is improved.

[0040] In the embodiment, the outer wall of the outer conduit 124 is provided with a plurality of spiral convex tracks 1242, the inner wall of the brushing ring 165 is provided with a plurality of spiral grooves 1652, the spiral convex track 1242 is slidingly connected inside the spiral groove 1652, the brushing ring 165 is provided with an annular clamping groove 1651 on the side close to the first fixing frame 164, and the side of the first fixing frame 164 is slidingly clamped in the clamping groove 1651. The spiral convex track 1242 cooperates with the spiral groove 1652, the outer conduit 124 is telescoped to drive the brushing ring 165 to slide along the axial direction while rotating in the circumferential direction, the bristles can rotate 360° to clean the nozzle port and the outer wall, cover the circumferential gap and the dead angle of the port, and improve the cleaning thoroughness by more than 60%; the annular clamping groove 1651 cooperates with the first fixing frame 164 to limit the rotation track of the brushing ring 165, avoid deviation, ensure that the bristles always adhere to the surface of the outer conduit 124 during the cleaning process, ensure the cleaning accuracy, and further maintain the gap stability of the annular nozzle.

[0041] In the embodiment, the buffer assembly 500 includes a protective pipe 510 connected through the tapered pipe 400 and the throat pipe 600, the protective pipe 510 is provided with a stepped groove structure on the side close to the tapered pipe 400, the stepped groove structure of the protective pipe 510 is fixed with an air bag ring 530, the side of the air bag ring 530 close to the tapered pipe 400 is a stepped structure, the stepped structure of the air bag ring 530 is inserted into the tapered pipe 400, and the air bag ring 530 is connected with an inner bag film 540, and the air cavity is closed between the inner wall of the inner bag film 540 and the inner wall of the air bag ring 530. The protective pipe 510 of the buffer assembly 500 cooperates with the air bag ring 530, the stepped structure of the air bag ring 530 is accurately connected with the tapered pipe 400 to form a transition flow channel; the air pressure in the air cavity can be adjusted, the inner bag film 540 is inflated when the air pressure increases to form a flexible buffer layer, which can absorb the impact energy (the impact force is reduced by 50%) when the fish and water mixture flows at a high speed; the stepped groove structure ensures that the air bag ring 530 is stably installed and avoids deviation, meets the buffering requirements under different conveying speeds, effectively reduces the collision damage between the live fish and the pipe wall, and improves the nondestructive conveying effect.

[0042] In this embodiment, the conveying mechanism 100 further includes a pressure monitoring instrument 140 that penetrates and connects inside the sleeve 130, a second fixing frame 170 that is fitted to the outer wall of the working water straight pipe 200, fixing plates 190 that are fixed on both sides of the second fixing frame 170, the two fixing plates 190 that are fixed to the side wall of the sealing flange 150 and the side wall of the tapered pipe 400 respectively, an air guide pipe 180 that penetrates between the two fixing plates 190, and an air duct 180 that penetrates the outer wall of the airbag ring 530. The second trachea 520 has its two ends connected to the air chamber and the air guide tube 180 respectively. The outer wall of the push ring 123 slides against the inner wall of the sleeve 130. The side of the push ring 123 near the outer guide tube 124 is separated from the inside of the sleeve 130 and has an internal pressure chamber. The bottom end of the air pressure monitor 140 is inserted into the internal pressure chamber. The outer wall of the sleeve 130 is connected to the first trachea 131. The two ends of the first trachea 131 are connected to the internal pressure chamber and the air guide tube 180 respectively. Through the air pressure transmission path of "inner pressure chamber - first air pipe 131 - air guide pipe 180 - second air pipe 520 - air chamber", when the outer guide pipe 124 is adjusted, the push ring 123 compresses the inner pressure chamber, and the air pressure can be synchronously transmitted to the air chamber of the air bag ring 530, realizing the linkage of "nozzle narrowing (high-speed delivery) - inner bladder membrane 540 bulging (enhanced buffering)" without the need for additional power control; the air pressure monitor 140 monitors the air pressure of the inner pressure chamber in real time, and can judge the number of live fish collisions by the frequency and amplitude of air pressure changes (the frequency of air pressure fluctuation is positively correlated with the number of collisions), which facilitates timely adjustment of the delivery speed; the second fixing frame 170 and the fixing plate 190 reinforce the connection of the working water straight pipe 200, the sealing flange 150 and the tapered pipe 400, ensuring the stability of the air pressure transmission path, avoiding leakage, and taking into account both buffer linkage and collision monitoring functions.

[0043] Specifically, according to Figures 1-11 As shown, the fixed pipe 110 is connected to the external pipeline structure and the overall position of the fish suction pump is fixed to ensure the stability of the structure. The working water is provided by the external power water pump. The working water enters the working water straight pipe 200 through the working water inlet pipe 300, and then is ejected from the annular nozzle formed between the outer guide pipe 124 and the tapered pipe 400. A high-speed jet is formed inside the tapered pipe 400, which in turn forms a negative pressure zone. The suction fluid (fish water mixture) is first drawn into the inner guide pipe 121, and then passes through the outer guide pipe 124, tapered pipe 400, protective pipe 510, and throat pipe 600 in sequence, and finally discharged through the diffuser chamber. After the device is connected to the pipeline, the width of the annular nozzle is determined by the gap between the outer conduit 124 and the tapered tube 400, and the width of the annular nozzle determines the magnitude of the negative pressure, which directly affects the conveying speed of the fluid (fish-water mixture) being drawn in. Therefore, the gap between the outer conduit 124 and the tapered tube 400 is adjusted according to the conveying requirements. In the process of adjusting to improve the conveying efficiency, only need to rotate the bolt 125, the bolt 125 is screwed into the sleeve 130 inside, the bolt 125 pushes the push ring 123 to translate inside the sleeve 130, the push ring 123 pushes the outer guide tube 124 to translate on the outer wall of the inner guide tube 121, the outer guide tube 124 translates inside the positioning ring 210, the outer guide tube 124 drives the semiconductor refrigerator 161 to translate, so that the positioning frame 162 slides on the fixed slide rail 163, the outer guide tube 124 end extends close to the inner wall of the tapered tube 400, thereby reducing the width of the annular nozzle, accelerating the conveying speed of the sucked fluid (fish-water mixture) to meet the conveying demand, and the connection position of the fixed tube 110 and the external pipeline does not need to be changed during the adjustment process, thereby ensuring the stability of the connection of the fish suction pump and the external pipeline structure; At the same time, the push ring 123 compresses the inner pressure cavity between the sleeve 130, the air inside the inner pressure cavity is extruded, and in turn passes through the first air pipe 131, the air guide pipe 180 and the second air pipe 520, and is introduced into the air cavity formed between the air bag ring 530 and the inner capsule membrane 540, the air pressure in the air cavity is increased, so that the inner capsule membrane 540 is inflated, thereby realizing the anti-collision protection of the sucked fluid (fish-water mixture) near the outlet end of the tapered tube 400 while improving the conveying speed of the sucked fluid (fish-water mixture), improving the stability and safety of the conveying of the sucked fluid (fish-water mixture), and monitoring the air pressure in the inner pressure cavity after adjustment by using the air pressure monitor 140, monitoring the air pressure change value and change frequency, because the live fish is easily stimulated when the conveying speed of the sucked fluid (fish-water mixture) is improved, the collision frequency between the live fish and the inner capsule membrane 540 will increase, and the air pressure in the air cavity formed between the air bag ring 530 and the inner capsule membrane 540 changes during the collision process, and is fed back to the inner pressure cavity through the first air pipe 131, the air guide pipe 180 and the second air pipe 520, which is monitored by the air pressure monitor 140; In order to further protect the non-destructive conveying of the sucked fluid (fish-water mixture), the semiconductor refrigerator 161 is started to cool the working water in the working water straight pipe 200, and the outer wall of the outer guide tube 124 is cooled, because the cooling effect decreases with the conduction distance, the live fish moving in the outer guide tube 124 is gradually cooled, the activity of the live fish is temporarily reduced, thereby reducing the collision and damage to the live fish during conveying, and when the outer guide tube 124 moves to the tapered tube 400 to increase the conveying speed of the sucked fluid (fish-water mixture), although the conveying speed is accelerated, the semiconductor refrigerator 161 also moves with the outer guide tube 124 to the tapered tube 400, thereby increasing the refrigeration distance of the semiconductor refrigerator 161 to the sucked fluid (fish-water mixture) entering the inside of the outer guide tube 124, and ensuring the cooling and protection effect of the live fish; Further, the width of the annular nozzle can be readjusted by directly rotating the adjusting screw 125, so that the conveying speed can be maximized, and the stability and safety of the conveying of the sucked fluid (fish-water mixture) can be ensured; After the conveying of the sucked fluid (fish-water mixture) is completed, the threaded section of the screw 125 is screwed out of the sleeve 130, and then the screw 125 is pulled to push the ring 123 to move the outer conduit 124 towards the inner conduit 121. When the outer conduit 124 moves, the helical convex rail 1242 slides in the helical groove 1652, so that the brushing ring 165 slides along the outer wall of the outer conduit 124 and also rotates on the first fixed frame 164. Thus, the brushing ring 165 brushes the port of the outer conduit 124 close to the tapered pipe 400 and the outer wall of the port by the bristles, so that the sticky attachments in the sucked fluid (fish-water mixture) are prevented from adhering to the port of the outer conduit 124, thereby ensuring the precision of the width of the annular nozzle formed between the outer conduit 124 and the tapered pipe 400; Finally, the screw 125 is completely rotated into the sleeve 130, the screw 125 pushes the ring 123 to make the outer conduit 124 fit the inner wall of the tapered pipe 400, and at the same time, the inner capsule membrane 540 continues to bulge to close the fitting position of the outer conduit 124 and the tapered pipe 400. At this time, the outer conduit 124 moves, so that the through hole 1241 moves into the working water straight pipe 200. The outer conduit 124 is directly connected with the working water straight pipe 200 through the through hole 1241, and the working water straight pipe 200 is closed with the tapered pipe 400. Thus, the working water of the working water straight pipe 200 enters the outer conduit 124 through the through hole 1241, and the working water flows from the outer conduit 124 in the direction of the inner conduit 121, the protection pipe 510, the throat pipe 600 and the diffusion pipe 700, so that the working water flows bidirectionally to clean the inside of the fish suction pump, so as to facilitate the next conveying.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An adjustable non-damaging loop jet fish pump characterized by: The utility water straight pipe (200) is connected with the working water inlet pipe (300) through the outer wall, one end of the utility water straight pipe (200) is connected with the conveying mechanism (100), and the other end of the utility water straight pipe (200) is sequentially connected with the taper pipe (400), the buffer assembly (500), the throat pipe (600) and the diffusion pipe (700); the taper pipe (400) is closer to one end of the utility water straight pipe (200) and has a larger diameter than the other end; The conveying mechanism (100) comprises a sealing flange (150) connected to one end of the utility water straight pipe (200), a sleeve (130) fixed to one end of the sealing flange (150), a fixed pipe (110) inserted and fixed to one end of the sleeve (130) away from the sealing flange (150), a guide assembly (120) penetratingly connected in the sleeve (130), the guide assembly (120) being a telescopic pipe body structure, the guide assembly (120) penetratingly connected in the sealing flange (150) and the utility water straight pipe (200), one end of the guide assembly (120) arranged in the fixed pipe (110), the other end of the guide assembly (120) arranged in the taper pipe (400), and an annular nozzle structure formed between the guide assembly (120) and the inner wall of the taper pipe (400), the guide assembly (120) penetratingly connected between the inside of the guide assembly (120) and the inside of the buffer assembly (500), and the distance between the guide assembly (120) and the inner wall of the taper pipe (400) adjusted by telescopic adjustment, so as to adjust the size of the annular nozzle.

2. An adjustable lossless ring jet fish pump according to claim 1, characterized in that: The guide assembly (120) comprises an inner guide pipe (121) inserted and fixed in the fixed pipe (110), an outer guide pipe (124) slidingly sleeved on the outer wall of the inner guide pipe (121), the outer guide pipe (124) slidingly inserted in the sleeve (130), the sealing flange (150) and the utility water straight pipe (200), one end of the outer guide pipe (124) arranged in the taper pipe (400), the outer guide pipe (124) and the taper pipe (400) located on the same horizontal center line, the other end of the outer guide pipe (124) fixed with a push ring (123), the push ring (123) slidingly sleeved on the outer wall of the inner guide pipe (121), one side of the push ring (123) rotatably connected with a bolt (125), the bolt (125) threadedly connected to the outside of the sleeve (130), and the push ring (123) pushed to translate in the sleeve (130) by thread rotation of the bolt (125), so that the push ring (123) pushes the outer guide pipe to translate in the utility water straight pipe (200).

3. An adjustable loss-of-head ring jet fish pump according to claim 2, wherein: One end of the fixed pipe (110) is arranged in the sleeve (130), the outer wall of the inner guide pipe (121) is sleeved with a telescopic pipe (122), and the telescopic pipe (122) is connected between one end of the fixed pipe (110) and the side wall of the push ring (123).

4. An adjustable lossless ring jet fish pump as claimed in claim 2, wherein: The outer wall of the outer guide pipe (124) is penetratingly provided with a through hole (1241), a plurality of through holes (1241) are provided along the circumferential direction of the outer guide pipe (124), and the outer guide pipe (124) is provided with two states by being pushed to translate by the push ring (123); In the first state, the outer conduit (124) is arranged in a gap between one end and the inner wall of the tapered pipe (400), and the through hole (1241) is arranged between the inner wall of the sealing flange (150) and the outer wall of the inner conduit (121); In the second state, the outer conduit (124) is arranged in close contact with the inner wall of the tapered pipe (400), and the through hole (1241) is arranged inside the working water straight pipe (200), so that the inner conduit (121) is connected with the inside of the working water straight pipe (200).

5. An adjustable lossless ring jet fish pump as claimed in claim 2, wherein: The conveying mechanism (100) further comprises a temperature adjusting assembly (160) arranged inside the working water straight pipe (200), the outer conduit (124) is connected to the inside of the temperature adjusting assembly (160), the outer wall of the outer conduit (124) is sleeved with a positioning ring (210), the outer wall of the positioning ring (210) is fixed with a plurality of support plates (220), and one side of the support plate (220) is fixedly connected to the inner wall of the working water straight pipe (200).

6. An adjustable loss-of-head ring jet fish pump according to claim 5, wherein: The temperature adjusting assembly (160) comprises a semiconductor refrigerator (161) fixed to the outer wall of the outer conduit (124), the semiconductor refrigerator (161) is in an annular structure, a plurality of positioning frames (162) are fixed to the outer wall of the semiconductor refrigerator (161), a plurality of fixed slides (163) are fixed to the inner wall of the working water straight pipe (200), and one side of the positioning frame (162) away from the semiconductor refrigerator (161) is slidably connected with the fixed slide (163).

7. An adjustable loss-of-head ring jet fish pump according to claim 6, wherein: The temperature adjusting assembly (160) further comprises a brushing ring (165) sleeved on the outer wall of the outer conduit (124), a first fixing frame (164) is fixed to one side of the fixed slide (163), the first fixing frame (164) is slidably attached to the outer wall of the outer conduit (124), one side of the first fixing frame (164) is connected to the side wall of the brushing ring (165), the brushing ring (165) is provided with bristles on the side away from the first fixing frame (164), the outer wall of the bolt (125) is provided with a threaded section and a smooth section, the threaded section of the bolt (125) is threadedly connected to the inside of the sleeve (130), and the smooth section of the bolt (125) is arranged in the inside of the sleeve (130).

8. An adjustable loss-of-head ring jet fish pump according to claim 7, wherein: The outer wall of the outer conduit (124) is provided with a plurality of spiral convex rails (1242), the inner wall of the brushing ring (165) is provided with a plurality of spiral grooves (1652), the spiral convex rail (1242) is slidably connected in the spiral groove (1652), and the brushing ring (165) is provided with an annular clamping groove (1651) on the side close to the first fixing frame (164).

9. An adjustable lossless ring jet fish pump as claimed in claim 2, wherein: The buffer assembly (500) includes a protective tube (510) connected through between the tapered pipe (400) and the throat pipe (600), the protective tube (510) is provided with a stepped groove structure near the tapered pipe (400) side, the stepped groove structure of the protective tube (510) is fixed with an air bag ring (530), the air bag ring (530) is a stepped structure near the tapered pipe (400) side, the stepped structure of the air bag ring (530) is inserted into the tapered pipe (400), the air bag ring (530) is connected with an inner bag membrane (540), and the air cavity is closed between the inner wall of the inner bag membrane (540) and the inner wall of the air bag ring (530).

10. An adjustable loss-of-head ring jet fish pump according to claim 9, wherein: The conveying mechanism (100) further includes a gas pressure monitor (140) connected through in the sleeve (130), a second fixing frame (170) abuttingly arranged on the outer wall of the working water straight pipe (200), two fixing plates (190) fixed on the side wall of the sealing flange (150) and the side wall of the tapered pipe (400) respectively, a gas guide pipe (180) connected through between the two fixing plates (190), a second gas pipe (520) connected through on the outer wall of the air bag ring (530), the two ends of the second gas pipe (520) are connected through with the air cavity and the inner part of the gas guide pipe (180), the outer wall of the push ring (123) is slidingly abuttingly arranged on the inner wall of the sleeve (130), the inner pressure cavity is provided between the push ring (123) and the sleeve (130) near the outer catheter (124) side, the bottom end of the gas pressure monitor (140) is connected through in the inner pressure cavity, the outer wall of the sleeve (130) is connected through with a first gas pipe (131), and the two ends of the first gas pipe (131) are connected through with the inner pressure cavity and the inner part of the gas guide pipe (180).

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