A feed industrial production feed raw material lifting and conveying device and a use method thereof

Abstract

The application relates to the technical field of feed industrial production equipment, and discloses a feed raw material lifting and conveying device for feed industrial production and a use method, which comprises a rack, a frame slide, a sliding frame, a chain wheel assembly, an endless chain, a bearing platform, a hydraulic driving system, a material leakage recovery system and a falling protection system. The material leakage recovery system is composed of a material receiving disc, a material collecting groove, a pressure detection assembly and a material return conveying mechanism. When the accumulated material leakage reaches a set amount, the material is automatically returned to the feeding end, recycling is realized, the falling protection system adopts a cooperation structure of a ratchet bar and an electromagnetic control pawl, the sliding frame is automatically locked when the hydraulic system loses pressure, the hydraulic driving system is provided with a synchronization valve, oil supply balance of the double hydraulic cylinders is ensured, the application can automatically recover the leaked material, reduce the labor intensity, and instantaneously lock and prevent falling when the hydraulic pressure is lost, while ensuring stable lifting, and the safety and automation level of vertical conveying of the feed raw material are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of feed industry production equipment technology, specifically to a feed raw material lifting and conveying device and its usage method for industrial feed production. Background Technology

[0002] In industrial feed production, the lifting and conveying of feed ingredients is a crucial step. Vertical lifting devices, employing hydraulic cylinders to drive carriages and chains to move the load-bearing platform, are widely used in conveying bagged and bulk-packaged raw materials due to their high load-bearing capacity and stable operation. However, existing devices still have the following technical shortcomings:

[0003] Firstly, material leakage is severe and lacks automatic recovery methods. Bulk granular raw materials easily leak and fall from the edge of the support platform, accumulating at the bottom of the frame. Existing technologies such as CN204549343U use a receiving box to collect leaked material, but this requires regular manual cleaning and cannot achieve automatic recycling. Untimely cleaning can also affect equipment operation. The blower purging solution is only suitable for specific conveyor belt structures and is difficult to adapt to vertical lifting devices.

[0004] Secondly, there is a risk of fall when the hydraulic system loses pressure. In the event of a hydraulic pipeline rupture or a pump station failure, the supporting platform and materials may fall uncontrollably under gravity, causing equipment damage and personal injury. Existing mechanical locking mechanisms are mostly manually operated, with slow response times, and cannot automatically trigger locking upon pressure loss, resulting in insufficient reliability.

[0005] Third, the asynchronous operation of the two hydraulic cylinders causes the platform to tilt. When the oil supply to the left and right hydraulic cylinders is uneven, the lifting speed of the carriage and the four corners of the supporting platform is inconsistent, resulting in tilting. This not only affects the stability of the conveying process and exacerbates material leakage, but may also cause the equipment to jam or be damaged.

[0006] Therefore, there is an urgent need to develop a vertical lifting and conveying device that combines automatic material recovery for leaks and automatic anti-fall protection against pressure loss, in order to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a feed raw material lifting and conveying device and its usage method for industrial feed production.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A feed raw material vertical lifting and conveying device with leakage recovery and anti-fall protection functions includes a frame (1), a side rail (2) fixedly installed on the frame (1), a slide (3) slidably installed on the side rail (2), a sprocket assembly (4) installed on the slide (3), an annular chain (5) passing around the sprocket assembly (4), a bearing platform (6) fixedly connected to one end of the annular chain (5), and a hydraulic drive system (7) for driving the slide (3) to rise and fall along the side rail (2).

[0010] The device also includes a leakage recovery system (8) and a fall protection system (9). The leakage recovery system (8) is located below the support platform (6) and at the bottom of the frame (1) to collect the feed material that leaks during the conveying process and automatically return it to the feed end; the fall protection system (9) is located between the slide (3) and the frame (1) to automatically lock the slide (3) from falling when the hydraulic drive system (7) loses pressure.

[0011] As a preferred embodiment, the leakage recovery system (8) includes: a receiving tray (81), a collection trough (82), a pressure detection component (83), and a return conveying mechanism (84). The receiving tray (81) is fixedly installed at the bottom of the supporting platform (6) to receive leaked feed materials on the supporting platform (6); the collection trough (82) is located at the bottom of the frame (1), below the supporting platform (6) and the receiving tray (81), to collect leaked and fallen feed materials at each level; the pressure detection component (83) is installed at the bottom of the collection trough (82) to detect the accumulated weight or pressure of the feed materials in the collection trough (82); the input end of the return conveying mechanism (84) is connected to the outlet of the collection trough (82), and its output end extends to the feed inlet, to automatically convey the collected feed materials back to the feed inlet.

[0012] As a preferred embodiment, the return material conveying mechanism (84) is a screw conveyor (841). The screw conveyor (841) is arranged at an upward inclination. Its lower inlet is sealed to the outlet of the collection trough (82), and its upper outlet is located above the inlet. An electrically controlled valve (85) is provided at the outlet of the collection trough (82). The electrically controlled valve (85) is connected to the pressure detection component (83). When the pressure value detected by the pressure detection component (83) reaches a preset threshold, the electrically controlled valve (85) automatically opens, and the screw conveyor (841) starts running synchronously.

[0013] As an alternative preferred solution, the return material conveying mechanism (84) can also be a pneumatic conveying pipe (842). One end of the pneumatic conveying pipe (842) is connected to the outlet of the collection trough (82), and the other end extends to the feed end. A Roots blower (843) is provided on the pneumatic conveying pipe (842) to provide negative pressure suction to draw the feed raw materials in the collection trough (82) along the pneumatic conveying pipe (842) to the feed end. A rotary feed valve (844) is provided at the feed end of the pneumatic conveying pipe (842) to control the feed amount and maintain the airtightness of the pneumatic conveying.

[0014] As a preferred embodiment, the fall protection system (9) includes: a ratchet rack (91), a pawl seat (92), a pawl (93), and an elastic retainer (95). The ratchet rack (91) is fixedly mounted on the frame (1) and arranged along the length of the side slide (2). One-way ratchet teeth (911) are continuously arranged on the ratchet rack (91). The pawl seat (92) is fixedly mounted on the slide (3). The pawl (93) is rotatably mounted on the pawl seat (92) via a pin (94). The pawl (93) has a pawl head (931) that meshes with the one-way ratchet teeth (911) and a tail end (932) that is away from the ratchet rack (91). The elastic retainer (95) is disposed between the pawl seat (92) and the pawl (93) and is used to apply an elastic force to the pawl (93) to make the pawl head (931) tend to rotate toward the ratchet rack (91).

[0015] As a further preferred embodiment, the fall protection system (9) further includes an unlocking mechanism (96), which includes an electromagnet (961) and a controller (964). The electromagnet (961) is fixedly mounted on the slide (3), and the armature (962) of the electromagnet (961) is connected to the tail end (932) of the pawl (93) via a connecting rod (963). The controller (964) is signal-connected to the pressure sensor (71) of the hydraulic drive system (7) and the electromagnet (961). When the hydraulic drive system (7) is working normally, the controller (964) controls the electromagnet (961) to be energized, and the armature (962) pulls the tail end (932) of the pawl (93), so that the pawl head (931) disengages from the one-way ratchet (911), and the carriage (3) rises and falls freely; when the hydraulic drive system (7) loses pressure, the controller (964) controls the electromagnet (961) to be de-energized, and the pawl (93) is reset under the action of the elastic retainer (95), and the pawl head (931) is engaged in the one-way ratchet (911), preventing the carriage (3) from falling downward.

[0016] As a preferred embodiment, the hydraulic drive system (7) includes a left hydraulic cylinder (72), a right hydraulic cylinder (73), a hydraulic pump station (74), and a synchronization valve (76). The left hydraulic cylinder (72) and the right hydraulic cylinder (73) are symmetrically arranged on the left and right sides of the frame (1), and their piston rods are fixedly connected to the left and right sides of the slide (3), respectively. The hydraulic pump station (74) supplies oil to the left hydraulic cylinder (72) and the right hydraulic cylinder (73) through the oil supply line (75). The synchronization valve (76) is arranged in the oil supply line (75) and is located between the hydraulic pump station (74) and the left hydraulic cylinder (72) and the right hydraulic cylinder (73). It is used to distribute hydraulic oil equally to the left hydraulic cylinder (72) and the right hydraulic cylinder (73) so that the lifting speed of the left and right sides of the slide (3) is consistent.

[0017] As a further preferred embodiment, the synchronization valve (76) is a flow divider and combiner valve, which includes a valve body (761), a flow divider valve core (762) disposed in the valve body (761), and two throttle ports (763) disposed at both ends of the flow divider valve core (762). The flow divider valve core (762) automatically adjusts the opening of the two throttle ports (763) according to the load pressure on both sides, so as to achieve equal oil supply to the left hydraulic cylinder (72) and the right hydraulic cylinder (73).

[0018] The present invention also provides a method for vertically lifting and conveying feed ingredients using the above-mentioned device, comprising the following steps:

[0019] S1. Place bagged or bulk feed raw materials on the carrying platform (6), and drive the slide (3) to rise vertically along the side slide (2) through the hydraulic drive system (7). The sprocket assembly (4) rises synchronously with the slide (3), driving the ring chain (5) that passes around the sprocket assembly (4) to lift the carrying platform (6) upward.

[0020] S2. During the lifting process, the feed raw materials leaked on the bearing platform (6) fall into the receiving tray (81) at the bottom of the bearing platform (6) and are guided into the collection trough (82) at the bottom of the frame (1) through the receiving tray (81).

[0021] S3. The pressure detection component (83) at the bottom of the collection trough (82) detects the accumulation pressure of feed raw materials in the collection trough (82) in real time. When the detected pressure reaches the preset threshold, the electric control valve (85) at the outlet of the collection trough (82) opens automatically, and the return conveying mechanism (84) starts to transport the feed raw materials in the collection trough (82) back to the feed inlet, realizing the automatic recycling of leaked materials.

[0022] S4. During the lifting process, the controller (964) of the fall protection system (9) monitors the working pressure of the hydraulic drive system (7) in real time. When the hydraulic drive system (7) is working normally, the controller (964) controls the electromagnet (961) to be energized, so that the pawl head (931) of the pawl (93) disengages from the one-way ratchet (911) on the ratchet rack (91), and the carriage (3) rises and falls normally.

[0023] S5. When the controller (964) detects that the hydraulic drive system (7) is depressurized, the controller (964) controls the electromagnet (961) to de-energize. The pawl (93) rotates around the pin (94) to reset under the action of the elastic retainer (95). The pawl head (931) is engaged in the corresponding one-way ratchet (911), instantly locking the anti-slip frame (3) to prevent the bearing platform (6) and feed raw materials from falling.

[0024] S6. After lifting to the target height, remove the feed ingredients to complete the vertical lifting and conveying operation.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The system enables automatic recycling of leaked feed, reducing manual labor intensity. By incorporating a receiving tray, collection trough, pressure detection components, and a return conveyor mechanism, it can collect leaked feed materials in real time during the lifting and conveying process. When the material accumulation in the collection trough reaches a preset amount, the return conveyor automatically initiates, returning the leaked material to the feeding end for recycling. The entire process requires no manual intervention, avoiding material waste and reducing labor costs associated with manual cleaning.

[0027] 2. Automatic anti-fall mechanism in case of hydraulic pressure loss significantly improves safety. Through the cooperation of a ratchet rack and pawl, and an electromagnet-controlled unlocking mechanism, the pawl automatically disengages without affecting lifting during normal hydraulic system operation, and automatically engages the ratchet rack to lock in the event of pressure loss, thus preventing a fall. Compared to existing locking mechanisms that require manual operation or have a delayed response, this invention offers faster response and higher reliability.

[0028] 3. Synchronous control of dual hydraulic cylinders ensures smooth lifting. By setting up a flow divider and combiner valve, the hydraulic cylinders on both sides receive equal oil supply, ensuring that the lifting speed of the carriage and the four corners of the carrying platform is consistent. This effectively prevents the platform from tilting, which not only improves the stability of the conveying process but also reduces material leakage caused by tilting.

[0029] 4. The overall structure is highly integrated and adaptable. The leakage recovery system and the anti-fall protection system are both integrated into the original vertical lifting and conveying device without changing the main layout of the equipment. It is suitable for vertical conveying scenarios of bagged and bulk feed raw materials and has good prospects for promotion and application. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 A schematic diagram of the overall structure of the feed raw material vertical lifting and conveying device provided by the present invention;

[0032] Figure 2 This is a partial structural diagram of the leakage recovery system in this invention;

[0033] Figure 3 This is a schematic diagram of the structure of the return material conveying mechanism (screw conveyor scheme) in this invention;

[0034] Figure 4 This is a schematic diagram of the structure of the return material conveying mechanism (pneumatic conveying pipe scheme) in this invention;

[0035] Figure 5 This is a schematic diagram of the fall protection system in this invention;

[0036] Figure 6 This is a schematic diagram of a partial connection structure of the fall protection system in this invention;

[0037] Figure 7 This is a hydraulic schematic diagram of the hydraulic drive system in this invention;

[0038] Figure 8 This is a cross-sectional view of the flow divider / combiner valve in this invention.

[0039] In the diagram: 1—Frame; 2—Side rail; 3—Slide carriage; 4—Sprocket assembly; 5—Ring chain; 6—Bearing platform; 7—Hydraulic drive system; 71—Pressure sensor; 72—Left hydraulic cylinder; 73—Right hydraulic cylinder; 74—Hydraulic pump station; 75—Oil supply line; 76—Synchronization valve; 761—Valve body; 762—Flow divider valve core; 763—Throttle port; 8—Leakage recovery system; 81—Receiving tray; 82—Collection trough; 83—Pressure detection component; 84—Return Material conveying mechanism; 841—Screw conveyor; 842—Pneumatic conveying pipe; 843—Roots blower; 844—Rotary feeder valve; 85—Electrically controlled valve; 9—Fall protection system; 91—Ratchet; 911—One-way ratchet; 92—Pawl seat; 93—Pawl; 931—Pawl head; 932—Tail end; 94—Pin; 95—Elastic retainer; 96—Unlocking mechanism; 961—Electromagnet; 962—Armature; 963—Connecting rod; 964—Controller. Detailed Implementation

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0041] Example 1

[0042] like Figure 1 As shown, this embodiment provides a vertical lifting and conveying device for feed raw materials with leakage recovery and anti-fall protection functions, including a frame (1). The frame (1) is a frame-type steel structure, and side rails (2) extending vertically are fixedly installed on its left and right sides respectively. The slide (3) is a rectangular frame structure, and its left and right sides are slidably installed on the side rails (2) respectively, and can slide up and down along the side rails (2).

[0043] A sprocket assembly (4) is mounted on the carriage (3). The sprocket assembly (4) includes a sprocket shaft rotatably mounted on the carriage (3) and a sprocket fixedly mounted on the sprocket shaft. A ring chain (5) passes around the sprocket of the sprocket assembly (4), and one end extends downward and is fixedly connected to the support platform (6). The support platform (6) is a flat structure used to support bagged or bulk feed ingredients.

[0044] The hydraulic drive system (7) is used to drive the carriage (3) to rise and fall along the side rail (2). Figure 7 As shown, the hydraulic drive system (7) includes a left hydraulic cylinder (72) and a right hydraulic cylinder (73), which are symmetrically arranged on the left and right sides of the frame (1). The cylinder bodies of the left hydraulic cylinder (72) and the right hydraulic cylinder (73) are fixed to the bottom or top of the frame (1), and their piston rods are fixedly connected to the left and right sides of the slide (3). The hydraulic pump station (74) supplies oil to the left hydraulic cylinder (72) and the right hydraulic cylinder (73) through the oil supply line (75). A synchronization valve (76) is provided in the oil supply line (75), and the synchronization valve (76) is located between the hydraulic pump station (74) and the left hydraulic cylinder (72) and the right hydraulic cylinder (73).

[0045] like Figure 8 As shown, in this embodiment, the synchronization valve (76) is a flow divider and combiner valve, including a valve body (761), a flow divider valve core (762) disposed in the valve body (761), and two throttle ports (763) disposed at both ends of the flow divider valve core (762). The flow divider valve core (762) can automatically adjust the opening of the two throttle ports (763) according to the load pressure on both sides, so as to realize that the oil supply of the left hydraulic cylinder (72) and the right hydraulic cylinder (73) is equal, thereby ensuring that the lifting speed of the left and right sides of the slide (3) is consistent and preventing the bearing platform (6) from tilting.

[0046] Its working principle is as follows: the hydraulic oil output by the hydraulic pump station (74) is distributed equally by the synchronization valve (76) and enters the left hydraulic cylinder (72) and the right hydraulic cylinder (73) respectively, pushing the two piston rods to extend or retract synchronously, thereby driving the slide (3) to rise and fall smoothly along the side slide rail (2). When the slide (3) rises, the sprocket assembly (4) rises synchronously with the slide (3), driving the ring chain (5) that passes around the sprocket to move, thereby lifting the bearing platform (6) upward.

[0047] like Figure 2 As shown, the leakage recovery system (8) includes a receiving tray (81), a collection trough (82), a pressure detection component (83), and a return material conveying mechanism (84).

[0048] The receiving tray (81) is fixedly installed at the bottom of the supporting platform (6), and has a trough or cone-shaped structure. Its area is not less than the bottom area of ​​the supporting platform (6), and it is used to receive feed raw materials that leak or fall on the supporting platform (6). The bottom or side wall of the receiving tray (81) is provided with a guide port so that the collected leaked material can be guided downward along the guide port.

[0049] The collection trough (82) is located at the bottom of the frame (1), below the support platform (6) and the receiving tray (81). Its top is open to receive the spilled material from the receiving tray (81) and the feed raw materials that fall directly from the edge of the support platform (6). The bottom of the collection trough (82) is funnel-shaped to facilitate the collection of spilled material to the discharge port.

[0050] The pressure detection component (83) is installed at the bottom of the collection trough (82), specifically between the bottom wall of the collection trough (82) and the frame (1). It includes a pressure sensor or a weight sensor to detect the accumulated weight or pressure of the feed raw materials in the collection trough (82). The pressure detection component (83) is electrically connected to the controller (964).

[0051] The input end of the return material conveying mechanism (84) is connected to the outlet of the collection trough (82), and the output end extends to the inlet end (i.e., above the loading station of the bearing platform (6)). For example... Figure 3 As shown, in this embodiment, the return material conveying mechanism (84) adopts a screw conveyor (841). The screw conveyor (841) is arranged at an upward inclination. Its lower end inlet is sealed to the outlet of the collection trough (82), and its upper end outlet is located above the inlet. An electrically controlled valve (85) is provided at the outlet of the collection trough (82). The electrically controlled valve (85) is connected to the pressure detection component (83) (signal transmission and control can be achieved through the controller (964)).

[0052] When the pressure value detected by the pressure detection component (83) reaches the preset threshold (for example, when the leaked material in the collection trough accumulates to a certain weight), the electrically controlled valve (85) automatically opens, and the screw conveyor (841) starts running synchronously, conveying the leaked material in the collection trough (82) along the screw conveyor (841) to the top of the feed end. The leaked material falls onto the bearing platform (6) at the feed end under the action of gravity, realizing automatic recycling. When the pressure value drops below the preset threshold, the electrically controlled valve (85) closes, and the screw conveyor (841) stops running.

[0053] As an alternative, such as Figure 4 As shown, the return conveying mechanism (84) can also be a pneumatic conveying pipe (842). One end of the pneumatic conveying pipe (842) is connected to the outlet of the collection trough (82), and the other end extends to the inlet end. A Roots blower (843) is installed on the pneumatic conveying pipe (842) to provide negative pressure suction, which draws the feed raw materials in the collection trough (82) along the pneumatic conveying pipe (842) to the inlet end. A rotary feed valve (844) is installed at the inlet end of the pneumatic conveying pipe (842) to control the feed amount and maintain the airtightness of the pneumatic conveying, preventing air leakage from affecting the conveying effect. The pneumatic conveying method is particularly suitable for the recovery of leaked powdery feed raw materials with fine particles and good flowability.

[0054] like Figure 5 and Figure 6 As shown, the fall protection system (9) includes a ratchet rack (91), a pawl seat (92), a pawl (93), a pin (94), a flexible retainer (95), and an unlocking mechanism (96).

[0055] The ratchet rack (91) is fixedly installed on the frame (1) and arranged along the length direction (i.e., the vertical direction) of the side slide (2). The ratchet rack (91) has unidirectional ratchet teeth (911) arranged continuously, and the tooth shape of each unidirectional ratchet tooth (911) is set to allow the slide (3) to slide freely upward and prevent the slide (3) from falling downward.

[0056] The pawl seat (92) is fixedly mounted on the slide (3) and moves up and down synchronously with the slide (3). The pawl (93) is rotatably mounted on the pawl seat (92) via a pin (94). The pawl (93) has a pawl head (931) at the front end and a tail end (932) at the rear end. The tooth shape of the pawl head (931) is adapted to the one-way ratchet (911) and can be engaged in the one-way ratchet (911) to achieve locking.

[0057] An elastic retainer (95) is disposed between the pawl seat (92) and the pawl (93). In this embodiment, the elastic retainer (95) is a compression spring or a torsion spring. The elastic retainer (95) applies an elastic force to the pawl (93), causing the pawl head (931) to tend to rotate toward the ratchet rack (91) (i.e., to tend to engage with the one-way ratchet (911)).

[0058] The unlocking mechanism (96) includes an electromagnet (961) and a controller (964). The electromagnet (961) is fixedly mounted on the slide (3), and the armature (962) of the electromagnet (961) is connected to the tail end (932) of the pawl (93) via a connecting rod (963). The controller (964) is connected to the pressure sensor (71) of the hydraulic drive system (7) and the electromagnet (961). The pressure sensor (71) is located in the oil supply line (75) and is used to monitor the working pressure of the hydraulic system in real time.

[0059] Its working principle is:

[0060] When the hydraulic drive system (7) is working normally, the oil supply line (75) maintains normal pressure. The pressure sensor (71) transmits the normal pressure signal to the controller (964). The controller (964) controls the electromagnet (961) to be energized. The armature (962) of the electromagnet (961) overcomes the elastic force of the elastic retainer (95) and pulls the tail end (932) of the pawl (93) through the connecting rod (963), so that the pawl (93) rotates around the pin (94). The pawl head (931) disengages from the one-way ratchet (911), and the carriage (3) can be raised and lowered freely without interference from the ratchet rack (91).

[0061] When the hydraulic drive system (7) loses pressure (such as due to hydraulic pipeline rupture, hydraulic pump station failure, or hydraulic oil leakage), the pressure in the oil supply line (75) drops sharply. The pressure sensor (71) transmits the pressure loss signal to the controller (964), and the controller (964) immediately controls the electromagnet (961) to de-energize. After the electromagnet (961) loses its magnetic force, the pawl (93) rotates around the pin (94) and resets under the elastic force of the elastic retainer (95). The pawl head (931) instantly engages in the corresponding one-way ratchet (911), preventing the carriage (3) from moving downwards, thereby preventing the load-bearing platform (6) and the loaded feed materials from falling. The response time from the occurrence of pressure loss to the locking of the pawl is only the time for the electromagnet to de-energize and the elastic retainer to act. The response speed is extremely fast, which can effectively ensure safety.

[0062] Example 2

[0063] This embodiment provides a method for vertically lifting and conveying feed raw materials using the device described in Embodiment 1, including the following steps:

[0064] S1. Place bagged or bulk feed raw materials on the support platform (6), start the hydraulic drive system (7), and the hydraulic pump station (74) supplies oil to the left hydraulic cylinder (72) and the right hydraulic cylinder (73) in equal amounts through the oil supply line (75) and the synchronization valve (76), driving the slide (3) to rise vertically along the side slide (2). The sprocket assembly (4) rises synchronously with the slide (3), driving the ring chain (5) that passes around the sprocket assembly (4) to lift the support platform (6) upward.

[0065] During this process, the flow divider valve core (762) in the synchronization valve (76) automatically adjusts the opening of the two throttle ports (763) according to the load pressure on both sides, ensuring that the oil supply of the left hydraulic cylinder (72) and the right hydraulic cylinder (73) is equal, so that the lifting speed of the left and right sides of the slide (3) is consistent, and the bearing platform (6) remains horizontal and does not tilt.

[0066] S2. During the lifting process, if there is any leakage of feed material on the support platform (6), the leaked feed material will fall into the receiving tray (81) at the bottom of the support platform (6), and the receiving tray (81) will guide the collected leakage material into the collection trough (82) at the bottom of the frame (1). Feed material that falls directly from the edge of the support platform (6) can also fall directly into the collection trough (82).

[0067] S3. The pressure detection component (83) at the bottom of the collection trough (82) detects the accumulation pressure of the feed raw materials in the collection trough (82) in real time and transmits the pressure signal to the controller (964). The controller (964) compares the detected pressure with a preset threshold. When the detected pressure reaches the preset threshold, the controller (964) controls the electrically controlled valve (85) at the discharge port of the collection trough (82) to open automatically, and at the same time controls the return material conveying mechanism (84) to start operation.

[0068] If the return material conveying mechanism (84) is a screw conveyor (841), the screw conveyor (841) will transport the feed raw materials in the collection trough (82) along the inclined upward screw blades to the top of the feed end, and the leaked material will fall onto the bearing platform (6) of the feed end under the action of gravity. If the return material conveying mechanism (84) is a pneumatic conveying pipe (842), the Roots blower (843) will start to provide negative pressure suction, and the feed raw materials in the collection trough (82) will be pumped to the feed end along the pneumatic conveying pipe (842). The rotating feed valve (844) will control the feed amount and maintain the seal.

[0069] When the pressure value drops below the preset threshold, the controller (964) controls the electric valve (85) to close, and the return material conveying mechanism (84) stops running, completing one automatic recycling cycle of leaked material.

[0070] S4. During the lifting process, the controller (964) of the fall protection system (9) monitors the working pressure of the hydraulic drive system (7) in real time through the pressure sensor (71). When the hydraulic drive system (7) is working normally, the oil supply line (75) maintains normal pressure. The controller (964) controls the electromagnet (961) to be energized, and the armature (962) pulls the tail end (932) of the pawl (93), so that the pawl head (931) disengages from the one-way ratchet (911) on the ratchet rack (91), and the carriage (3) rises and falls normally without interference.

[0071] S5. When the controller (964) detects that the hydraulic drive system (7) has lost pressure (the pressure in the oil supply line drops sharply below the set value), the controller (964) immediately controls the electromagnet (961) to be de-energized. The electromagnet (961) loses its magnetic force, and the pawl (93) rotates around the pin (94) and resets under the elastic force of the elastic retainer (95). The pawl head (931) instantly engages with the one-way ratchet (911) in the corresponding position, locking the slide (3) and preventing the bearing platform (6) and the loaded feed raw materials from falling downwards, thus ensuring the safety of the equipment and personnel.

[0072] S6. After lifting to the target height, stop the hydraulic drive system (7), take out the feed raw materials, and complete the vertical lifting and conveying operation.

[0073] Example 3

[0074] The difference between this embodiment and Embodiment 1 lies in the specific selection of the return material conveying mechanism (84). When the feed raw material is powdery or fine granular material (such as soybean meal powder, fish meal, etc.), it is preferable to use a pneumatic conveying pipe (842) as the return material conveying mechanism, and to set up a cyclone separator or bag filter to separate the feed raw material from the conveying airflow when it is conveyed to the feed end, so as to avoid dust flying.

[0075] When the feed ingredients are materials with large particles or high moisture content (such as crushed corn, soybean meal, etc.), it is preferable to use a screw conveyor (841) as the return material conveying mechanism to ensure the reliability and sealing of the conveying.

[0076] Example 4

[0077] The difference between this embodiment and Embodiment 1 is that the fall protection system (9) has two ratchet racks (91), which are respectively set next to the side rails (2) on both sides of the frame (1). The sides of the carriage (3) are respectively set with pawl seats (92) and pawls (93). The pawls (93) on both sides are synchronously controlled by the same unlocking mechanism (96). By locking on both sides, the reliability and force balance of the fall protection can be further improved.

[0078] In addition, the elastic retainer (95) can also be a leaf spring or a coil spring. The installation method is as follows: one end of the elastic retainer (95) abuts against the pawl seat (92), and the other end abuts against the tail end (932) or middle of the pawl (93), and continuously applies a spring force to the pawl (93) to make the pawl head (931) rotate toward the ratchet rack (91).

[0079] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0080] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A feed raw material lifting and conveying device and its method of use for industrial feed production, comprising a frame (1), a side rail (2) fixedly installed on the frame (1), a slide (3) slidably installed on the side rail (2), a sprocket assembly (4) installed on the slide (3), an annular chain (5) passing around the sprocket assembly (4), a bearing platform (6) fixedly connected to one end of the annular chain (5), and a hydraulic drive system (7) for driving the slide (3) to rise and fall along the side rail (2), characterized in that, Also includes: The leakage recovery system (8) is located below the bearing platform (6) and at the bottom of the frame (1) to collect the feed raw materials that leak during the conveying process and automatically return them to the feeding end; And a fall protection system (9) is provided between the carriage (3) and the frame (1) for automatically locking the carriage (3) from falling when the hydraulic drive system (7) loses pressure.

2. The feed raw material lifting and conveying device and its usage method for industrial feed production as described in claim 1, characterized in that: The leakage recovery system (8) includes: The receiving tray (81) is fixedly installed at the bottom of the bearing platform (6) and is used to receive feed raw materials that leak from the bearing platform (6); The collection trough (82) is located at the bottom of the frame (1), below the bearing platform (6) and the receiving tray (81), and is used to collect feed materials that leak or fall from each level. A pressure detection component (83) is installed at the bottom of the collection trough (82) to detect the weight or pressure of the feed raw materials in the collection trough (82); And a return material conveying mechanism (84), whose input end is connected to the discharge port of the collection trough (82) and whose output end extends to the feed end, for automatically conveying the collected feed raw materials back to the feed end.

3. The feed raw material lifting and conveying device and its usage method for industrial feed production as described in claim 2, characterized in that: The return material conveying mechanism (84) is a screw conveyor (841). The screw conveyor (841) is arranged at an upward inclination. Its lower end inlet is sealed to the outlet of the collection trough (82), and its upper end outlet is located above the inlet. An electrically controlled valve (85) is provided at the outlet of the collection trough (82). The electrically controlled valve (85) is connected to the pressure detection component (83). When the pressure value detected by the pressure detection component (83) reaches the preset threshold, the electrically controlled valve (85) automatically opens, and the screw conveyor (841) starts running synchronously.

4. The feed raw material lifting and conveying device and its usage method for industrial feed production as described in claim 3, characterized in that: The return material conveying mechanism (84) is a pneumatic conveying pipe (842). One end of the pneumatic conveying pipe (842) is connected to the outlet of the collection trough (82), and the other end extends to the feed end. A Roots blower (843) is provided on the pneumatic conveying pipe (842) to provide negative pressure suction to draw the feed raw materials in the collection trough (82) along the pneumatic conveying pipe (842) to the feed end. A rotary feed valve (844) is provided at the feed end of the pneumatic conveying pipe (842) to control the feed amount and maintain the airtightness of the pneumatic conveying.

5. The feed raw material lifting and conveying device and its usage method for industrial feed production as described in claim 1, characterized in that: The fall protection system (9) includes: A ratchet rack (91) is fixedly installed on the frame (1) and arranged along the length direction of the side slide (2). One-way ratchet teeth (911) are continuously arranged on the ratchet rack (91). A ratchet seat (92) is fixedly installed on the slide (3); The pawl (93) is rotatably mounted on the pawl seat (92) via a pin (94). The pawl (93) has a pawl head (931) that meshes with the one-way ratchet (911) and a tail end (932) that is away from the ratchet rack (91). And an elastic retainer (95) is disposed between the pawl seat (92) and the pawl (93) for applying an elastic force to the pawl (93) to cause the pawl head (931) to rotate toward the ratchet rack (91).

6. The feed raw material lifting and conveying device and its usage method for industrial feed production as described in claim 1, characterized in that: The fall protection system (9) further includes an unlocking mechanism (96), which includes: An electromagnet (961) is fixedly installed on the slide (3), and the armature (962) of the electromagnet (961) is connected to the tail end (932) of the pawl (93) through a connecting rod (963); And the controller (964), which is connected to the pressure sensor (71) and the electromagnet (961) of the hydraulic drive system (7); When the hydraulic drive system (7) is working normally, the controller (964) controls the electromagnet (961) to be energized, and the armature (962) pulls the tail end (932) of the pawl (93), so that the pawl head (931) disengages from the one-way ratchet (911), and the carriage (3) rises and falls freely; when the hydraulic drive system (7) loses pressure, the controller (964) controls the electromagnet (961) to be de-energized, and the pawl (93) is reset under the action of the elastic retainer (95), and the pawl head (931) is engaged in the one-way ratchet (911), preventing the carriage (3) from falling downward.

7. The feed raw material lifting and conveying device and its method of use in industrial feed production as described in claim 6, characterized in that: The hydraulic drive system (7) includes: The left hydraulic cylinder (72) and the right hydraulic cylinder (73) are symmetrically arranged on the left and right sides of the frame (1), respectively. The piston rods of the left hydraulic cylinder (72) and the right hydraulic cylinder (73) are fixedly connected to the left and right sides of the slide (3), respectively. The hydraulic pump station (74) supplies oil to the left hydraulic cylinder (72) and the right hydraulic cylinder (73) through the oil supply line (75); And a synchronization valve (76) is provided in the oil supply line (75), located between the hydraulic pump station (74) and the left hydraulic cylinder (72) and the right hydraulic cylinder (73), for distributing hydraulic oil equally to the left hydraulic cylinder (72) and the right hydraulic cylinder (73) so that the lifting speed of the left and right sides of the slide (3) is consistent.

8. The feed raw material lifting and conveying device and its method of use for industrial feed production as described in claim 7, characterized in that: The synchronization valve (76) is a flow divider and combiner valve. The flow divider and combiner valve includes a valve body (761), a flow divider valve core (762) disposed in the valve body (761), and two throttle ports (763) disposed at both ends of the flow divider valve core (762). The flow divider valve core (762) automatically adjusts the opening of the two throttle ports (763) according to the load pressure on both sides, so as to realize that the oil supply of the left hydraulic cylinder (72) and the right hydraulic cylinder (73) is equal.

9. A feed raw material lifting and conveying device and its method of use for industrial feed production according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Place bagged or bulk feed raw materials on the carrying platform (6), and drive the slide (3) to rise vertically along the side slide (2) through the hydraulic drive system (7). The sprocket assembly (4) rises synchronously with the slide (3), driving the ring chain (5) that passes around the sprocket assembly (4) to lift the carrying platform (6) upward. S2. During the lifting process, the feed raw materials leaked on the bearing platform (6) fall into the receiving tray (81) at the bottom of the bearing platform (6) and are guided into the collection trough (82) at the bottom of the frame (1) through the receiving tray (81). S3. The pressure detection component (83) at the bottom of the collection trough (82) detects the accumulation pressure of feed raw materials in the collection trough (82) in real time. When the detected pressure reaches the preset threshold, the electric control valve (85) at the outlet of the collection trough (82) opens automatically, and the return conveying mechanism (84) starts to transport the feed raw materials in the collection trough (82) back to the feed inlet, realizing the automatic recycling of leaked materials. S4. During the lifting process, the controller (964) of the fall protection system (9) monitors the working pressure of the hydraulic drive system (7) in real time. When the hydraulic drive system (7) is working normally, the controller (964) controls the electromagnet (961) to be energized, so that the pawl head (931) of the pawl (93) disengages from the one-way ratchet (911) on the ratchet rack (91), and the carriage (3) rises and falls normally. S5. When the controller (964) detects that the hydraulic drive system (7) is depressurized, the controller (964) controls the electromagnet (961) to de-energize. The pawl (93) rotates around the pin (94) to reset under the action of the elastic retainer (95). The pawl head (931) is engaged in the corresponding one-way ratchet (911), instantly locking the anti-slip frame (3) to prevent the bearing platform (6) and feed raw materials from falling. S6. After lifting to the target height, remove the feed ingredients to complete the vertical lifting and conveying operation.

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