High-precision storage backpressure hydraulic oil circuit

Abstract

The utility model discloses a high-precision material storage backpressure hydraulic oil circuit, which relates to the technical field of material storage backpressure, and comprises an oil tank, a material storage box, a material conveying pipe, an oil pump and a hydraulic oil cylinder, and further comprises a controller, and a backpressure valve is fixedly connected on a hydraulic circuit of a discharge port of the material storage box. Pressure fluctuation caused by factors such as load change and oil temperature change can be coped with in real time, the back pressure is kept to fluctuate within a small range near a set value, stable flowing of materials in the material storage device is guaranteed, the problems of material blockage and non-uniform flowing-out are effectively avoided, and the service life of the material storage device is prolonged. Through the cooperation of the material characteristic detection device and the controller, the oil way system can automatically adapt to changes of material characteristics of different viscosities, granularities and the like, in a material storage system for processing various materials, the production efficiency and the material processing quality are improved, and the phenomena of material particle crushing and layering caused by improper back pressure are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material storage back pressure, in particular to a high-precision material storage back pressure hydraulic oil circuit. Background Art

[0002] The material storage action is an indispensable step in the working process of the injection molding machine. The effect of the material storage process will determine the final quality of the product. With the emergence of new injection molding materials and production processes, some products require the injection molding machine's back pressure to be very small when storing materials. Due to the structural characteristics of commonly used injection molding machines, there is a certain back pressure acting on the screw when storing materials, which makes the machine unable to adapt to new requirements.

[0003] For example, Chinese patent CN217434958U discloses a novel storage back pressure control oil circuit, comprising: a feeding cylinder, a two-way cartridge valve, a pressure control valve group, and an oil tank, wherein the pressure control valve group comprises a two-way pressure valve and a proportional valve.

[0004] In existing hydraulic equipment related to material storage, the hydraulic oil circuit system has certain limitations in controlling the storage and transportation of materials. During the unloading or material transportation process of some storage silos, the unstable pressure of the hydraulic system often leads to uneven material flow, affecting production efficiency and product quality. At the same time, traditional hydraulic oil circuits lack effective response mechanisms when facing changes in the different physical properties of materials (such as viscosity, particle size, etc.), and cannot adapt well to the diverse needs of storage operations. To address the above problems, a high-precision storage backpressure hydraulic oil circuit is proposed. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a high-precision material storage back-pressure hydraulic oil circuit.

[0006] In order to achieve the above-mentioned objectives, the utility model adopts the following technical solutions: a high-precision material storage back-pressure hydraulic oil circuit, including an oil tank, a material storage box, a material delivery pipe, an oil pump and a hydraulic cylinder, and also including a controller, a back-pressure valve is fixedly connected to the hydraulic circuit of the material storage box outlet, the inner wall of the material storage box is fixedly connected to a pressure sensor, the pressure sensor and the back-pressure valve are both electrically connected to the controller, a throttle valve is provided on the branch circuit of the hydraulic cylinder, an overflow valve is provided on the hydraulic oil circuit of the oil pump, one end of the material delivery pipe is fixedly connected to one end of the material storage box, and the other end of the material delivery pipe is fixedly connected to a material property detection device, the material property detection device includes a shell, a communication component, an online rheometer, an ultrasonic transmitter, a receiver, branch pipe one and branch pipe two.

[0007] Preferably, the outer side of the material delivery pipe is fixedly mounted on both ends of the shell, and the outer side of the material delivery pipe is symmetrically fixedly connected with two assembly pipes.

[0008] Preferably, both ends of the branch pipe 1 are threadedly connected with fixing bolts, and the two ends of the branch pipe 1 are fixedly connected to one end of the assembly pipe 1 through the fixing bolts.

[0009] Preferably, a sealing gasket is provided at the connection between the branch pipe 1 and the assembly pipe 1, and one end of the branch pipe 1 is fixedly connected to both ends of the online rheometer.

[0010] Preferably, two assembly pipes 2 are symmetrically and fixedly connected to the outside of the feed pipe, and both ends of the branch pipe 2 are fixedly connected to one end of the assembly pipe 2.

[0011] Preferably, one side of the second branch pipe is fixedly connected to one end of the ultrasonic transmitter, and the other side of the second branch pipe is fixedly connected to one end of the receiver.

[0012] Preferably, a sealing cover is fixedly mounted on the top of the housing, and the inner wall of the housing is fixedly connected to both ends of the communication component.

[0013] Preferably, the online rheometer, ultrasonic transmitter and receiver are all connected to the controller signal via a communication component.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. In the utility model, the material storage back pressure hydraulic oil circuit includes main components such as oil tank, material storage box, material property detection device, oil pump, overflow valve, throttle valve, back pressure valve, pressure sensor, controller and hydraulic cylinder. After starting the oil pump, the hydraulic oil begins to circulate in the oil circuit. When the material enters the material storage box, the pressure sensor monitors the material pressure in real time and feeds back the signal to the controller. The controller dynamically adjusts the back pressure valve according to the pressure signal and the preset algorithm to keep the back pressure stable. Through the coordinated work of the pressure sensor, controller and back pressure valve, it can respond to pressure fluctuations caused by factors such as load changes and oil temperature changes in real time, and keep the back pressure fluctuating within a small range near the set value, thereby ensuring the stable flow of material in the storage device and effectively avoiding problems such as material blockage and uneven outflow.

[0016] 2. In the present invention, by providing a material property detection device, the cooperation between the material property detection device and the controller enables the oil circuit system to automatically adapt to changes in material properties such as different viscosities and particle sizes. In a storage system that processes a variety of materials, there is no need to frequently manually adjust the back pressure parameters, thereby improving production efficiency and material processing quality, and reducing material particle breakage and stratification caused by improper back pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model proposes a structural diagram of a high-precision material storage back pressure hydraulic oil circuit;

[0018] Figure 2 This is a schematic diagram of the structure of the material property detection device for the high-precision material storage back pressure hydraulic oil circuit proposed in the utility model;

[0019] Figure 3 This is a top sectional view of a material property detection device for a high-precision material storage back pressure hydraulic oil circuit proposed in the utility model;

[0020] Figure 4 This utility model proposes a high-precision storage back pressure hydraulic oil circuit Figure 3 A magnified detail of point A in the middle.

[0021] Legend: 1. Oil tank; 2. Material storage box; 3. Material delivery pipe; 4. Material property detection device; 5. Oil pump; 6. Overflow valve; 7. Throttle valve; 8. Hydraulic cylinder; 9. Pressure sensor; 10. Controller; 11. Back pressure valve; 12. Assembly pipe 1; 13. Assembly pipe 2; 41. Housing; 42. Sealing cover; 44. Communication component; 45. Online rheometer; 46. Ultrasonic transmitter; 47. Receiver; 48. Branch pipe 1; 49. Branch pipe 2; 410. Fixing bolt; 411. Sealing gasket. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: Figure 1 and Figure 3 As shown, the utility model provides a high-precision material storage back-pressure hydraulic oil circuit, including an oil tank 1, a material storage box 2, a material delivery pipe 3, an oil pump 5 and a hydraulic cylinder 8, and also includes a controller 10. A back-pressure valve 11 is fixedly connected to the hydraulic circuit of the material storage box 2 outlet, and a pressure sensor 9 is fixedly connected to the inner wall of the material storage box 2. The pressure sensor 9 and the back-pressure valve 11 are both electrically connected to the controller 10. A throttle valve 7 is provided on the branch line of the hydraulic cylinder 8, and an overflow valve 6 is provided on the hydraulic oil circuit of the oil pump 5. One end of the material delivery pipe 3 is fixedly connected to one end of the material storage box 2, and the other end of the material delivery pipe 3 is fixedly connected to a material property detection device 4.

[0025] The following is a detailed description of the specific settings and functions of this embodiment: through the coordinated work of the pressure sensor 9, the controller 10 and the back pressure valve 11, it is possible to respond in real time to pressure fluctuations caused by factors such as load changes and oil temperature changes, and keep the back pressure fluctuating within a small range near the set value, thereby ensuring the stable flow of materials in the storage device and effectively avoiding problems such as material blockage and uneven outflow.

[0026] Example 2: Figure 1 - Figure 4 As shown, the material property detection device 4 includes a housing 41, a communication component 44, an online rheometer 45, an ultrasonic transmitter 46, a receiver 47, a branch pipe 1 48 and a branch pipe 2 49. The online rheometer 45, the ultrasonic transmitter 46 and the receiver 47 are all connected to the controller 10 by signal through the communication component 44. The outer side of the material delivery pipe 3 is fixedly installed at both ends of the housing 41. The outer side of the material delivery pipe 3 is symmetrically fixedly connected to two assembly pipes 12. Both ends of the branch pipe 1 48 are threadedly connected with fixing bolts 410, and the two ends of the branch pipe 1 48 are connected to the assembly pipe 12 by fixing bolts 410. One end of the branch pipe 48 is fixedly connected, a sealing gasket 411 is provided at the connection between the branch pipe 48 and the assembly pipe 12, one end of the branch pipe 48 is fixedly connected to both ends of the online rheometer 45, and the outside of the feeding pipe 3 is symmetrically fixedly connected with two assembly pipes 2 13, both ends of the branch pipe 2 49 are fixedly connected to one end of the assembly pipe 2 13, one side of the branch pipe 2 49 is fixedly connected to one end of the ultrasonic transmitter 46, and the other side of the branch pipe 2 49 is fixedly connected to one end of the receiver 47, a sealing cover 42 is fixedly installed on the top of the shell 41, and the inner wall of the shell 41 is fixedly connected to both ends of the communication component 44.

[0027] The effect achieved by the entire embodiment is that, by setting the material property detection device 4, the material in the feed pipe 3 will pass through the branch pipe 1 48 and the branch pipe 2 49, and the online rheometer 45 generates a small shear field in the branch pipe 1 48 to measure the stress response of the material in this shear field, thereby obtaining the viscosity of the material in real time and transmitting the data to the control system of the controller 10 in real time. The ultrasonic transmitter 46 emits an ultrasonic wave of a certain frequency, and the receiver 47 receives the ultrasonic wave signal after the material is attenuated. The attenuation degree of the signal is analyzed by the signal processing unit, and the average particle size or particle size distribution of the particles is calculated in combination with the pre-calibrated curve or model, and the data is transmitted to the control system of the controller 10 in real time; the controller 10 stores Back pressure control strategies corresponding to different material properties. When the material properties change, the controller 10 adjusts the initial setting value and adjustment sensitivity of the back pressure valve 11 according to the new material properties (for materials with higher viscosity, the controller 10 increases the initial setting back pressure of the back pressure valve 11, and appropriately increases the adjustment amplitude of the back pressure valve 11 when the pressure changes, to ensure the stability of the material during storage and transportation); through the cooperation of the material property detection device 4 and the controller 10, the oil circuit system can automatically adapt to changes in material properties such as different viscosities and particle sizes. In storage systems that process multiple materials, there is no need to frequently adjust the back pressure parameters manually, which improves production efficiency and material processing quality, and reduces the material particle breakage and stratification caused by improper back pressure.

[0028] The usage and working principle of this device: The storage back pressure hydraulic oil circuit includes main components such as oil tank 1, storage box 2, material property detection device 4, oil pump 5, overflow valve 6, throttle valve 7, back pressure valve 11, pressure sensor 9, controller 10 and hydraulic cylinder 8. The oil pump 5 draws oil from the oil tank 1 to provide a power source for the entire oil circuit. The overflow valve 6 is used to limit the maximum pressure of the oil circuit to protect the system from damage due to excessive pressure. The throttle valve 7 is arranged on the branch of the hydraulic cylinder 8 to adjust the flow. The back pressure valve 11 has an adjustable back pressure setting function. In the oil circuit, the back pressure valve 11 is located on the hydraulic circuit near the discharge port of the storage box 2. The pressure sensor 9 is installed on the warehouse wall of the storage box 2 to monitor the pressure generated by the material on the system in real time. The controller 10 is electrically connected to the pressure sensor 9 and the back pressure valve 11 ; After the oil pump 5 is started, the hydraulic oil begins to circulate in the oil circuit. When the material enters the storage box 2, the pressure sensor 9 monitors the material pressure in real time and feeds back the signal to the controller 10. The controller 10 dynamically adjusts the back-pressure valve 11 according to the pressure signal and the preset algorithm to keep the back pressure stable. (When the material pressure increases, the controller 10 controls the back-pressure valve 11 to increase the opening appropriately to maintain a stable back pressure; conversely, when the material pressure decreases, the opening of the back-pressure valve 11 is reduced). Through the coordinated work of the pressure sensor 9, the controller 10 and the back-pressure valve 11, it is possible to respond to pressure fluctuations caused by factors such as load changes and oil temperature changes in real time, and keep the back pressure fluctuating within a small range near the set value, thereby ensuring the stable flow of material in the storage device and effectively avoiding problems such as material blockage and uneven outflow.

[0029] At the same time, through the cooperation of the material property detection device 4 and the controller 10, the oil circuit system can automatically adapt to changes in material properties such as different viscosities and particle sizes. In a storage system that processes a variety of materials, there is no need to frequently manually adjust the back pressure parameters, thereby improving production efficiency and material processing quality, and reducing material particle breakage and stratification caused by improper back pressure.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-precision material storage back-pressure hydraulic oil circuit, comprising an oil tank (1), a material storage box (2), a material delivery pipe (3), an oil pump (5) and a hydraulic cylinder (8), characterized in that: The invention also includes a controller (10), a back pressure valve (11) is fixedly connected to the hydraulic circuit of the material storage box (2) outlet, a pressure sensor (9) is fixedly connected to the inner wall of the material storage box (2), and the pressure sensor (9) and the back pressure valve (11) are both electrically connected to the controller (10), a throttle valve (7) is provided on the branch of the hydraulic oil cylinder (8), and an overflow valve (6) is provided on the hydraulic oil circuit of the oil pump (5), one end of the material delivery pipe (3) is fixedly connected to one end of the material storage box (2), and the other end of the material delivery pipe (3) is fixedly connected to a material property detection device (4), and the material property detection device (4) includes a shell (41), a communication component (44), an online rheometer (45), an ultrasonic transmitter (46), a receiver (47), a branch pipe 1 (48) and a branch pipe 2 (49).

2. The high-precision material storage back pressure hydraulic oil circuit according to claim 1 is characterized in that: The outer side of the material delivery pipe (3) is fixedly mounted on both ends of the outer shell (41), and the outer side of the material delivery pipe (3) is symmetrically fixedly connected to two assembly pipes (12).

3. The high-precision material storage back pressure hydraulic oil circuit according to claim 2 is characterized in that: Both ends of the branch pipe (48) are threadedly connected with fixing bolts (410), and the two ends of the branch pipe (48) are fixedly connected to one end of the assembly pipe (12) through the fixing bolts (410).

4. The high-precision material storage back pressure hydraulic oil circuit according to claim 3 is characterized in that: A sealing gasket (411) is provided at the connection between the branch pipe 1 (48) and the assembly pipe 1 (12), and one end of the branch pipe 1 (48) is fixedly connected to both ends of the online rheometer (45).

5. The high-precision material storage back pressure hydraulic oil circuit according to claim 1 is characterized in that: The outer side of the material delivery pipe (3) is symmetrically and fixedly connected to two second assembly pipes (13), and both ends of the second branch pipe (49) are fixedly connected to one end of the second assembly pipe (13).

6. The high-precision material storage back-pressure hydraulic oil circuit according to claim 5, characterized in that: One side of the second branch pipe (49) is fixedly connected to one end of the ultrasonic transmitter (46), and the other side of the second branch pipe (49) is fixedly connected to one end of the receiver (47).

7. The high-precision material storage back-pressure hydraulic oil circuit according to claim 1 is characterized in that: A sealing cover (42) is fixedly mounted on the top of the housing (41), and the inner wall of the housing (41) is fixedly connected to both ends of the communication component (44).

8. The high-precision material storage back-pressure hydraulic oil circuit according to claim 1 is characterized in that: The online rheometer (45), ultrasonic transmitter (46), and receiver (47) are all connected to the controller (10) via a communication component (44).

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