Unloader

Abstract

The invention discloses an unloader. The discharger comprises a shell, blades and an air injection device. A containing cavity is defined by the shell, a feeding port and a discharging port are formed in the shell, and the feeding port and the discharging port are located in the two sides of the containing cavity and communicate with the containing cavity. The blades are installed in the containing cavity, and the shell is further provided with an air blowing opening communicating with the containing cavity. The air spraying device communicates with the air blowing opening and is used for spraying air into the containing cavity through the air blowing opening. The air injection device can blow air to the blades, so that materials adhered to the blades can be blown by the air injected by the air injection device and are not adhered to the blades any more, and the blades are cleaned. Thus, it can be ensured that the materials adhering to the blades can be cleaned in time, the problem that the viscous materials continuously adhere to the unloader and block the unloader, and consequently equipment operation is not smooth or stopped is solved, and the operation stability of the unloader is improved.

Description

Technical Field

[0001] The present application relates to the technical field of dischargers, and more specifically, to a discharger. Background Art

[0002] Rotary unloaders are widely used in environmental protection, warehousing, transportation and other fields. However, in some applications with high moisture absorption and strong adhesion of powder materials, the powder materials are easy to stick to the blades of the rotary unloader, which makes it easy for the powder materials to block the unloader, thus causing the equipment to run poorly or terminate. Therefore, the effects of rotary unloaders in application scenarios with sticky powder materials vary, and the equipment operation stability is generally poor. Summary of the invention

[0003] An embodiment of the present application provides a discharger.

[0004] The discharger of the embodiment of the present application comprises a shell, a blade and an air jet device. The shell forms a receiving chamber, and the shell is provided with a feed inlet and a discharge outlet, and the feed inlet and the discharge outlet are located on both sides of the receiving chamber and are connected to the receiving chamber. The blade is installed in the receiving chamber, and the shell is also provided with an air blow outlet connected to the receiving chamber. The air jet device is connected to the air blow outlet, and the air jet device is used to spray air into the receiving chamber through the air blow outlet.

[0005] In some embodiments, the blowing port is located on at least one of an axial end surface or a rotation surface of the housing.

[0006] In some embodiments, the blowing port is communicated with the discharge port.

[0007] In some embodiments, the aperture of the air port is in the range of [6 mm, 10 mm].

[0008] In some embodiments, the jet device includes an jet pipe, a blowing air source, a pressure regulating valve and a solenoid valve, a jet pipe is provided with a blowing head at one end, the blowing head is installed at the blowing port, the other end of the jet pipe is connected to the blowing air source, the pressure regulating valve and the solenoid valve are installed on the jet pipe, the pressure regulating valve is used to adjust the blowing pressure of the jet pipe, and the solenoid valve is used to control the switch of the jet pipe.

[0009] In some embodiments, the blowing head is detachably mounted on the blowing port, and the blowing head adopts a standard module.

[0010] In certain embodiments, the gas stored in the blowing gas source is compressed air or compressed inert gas.

[0011] In certain embodiments, the start and stop of the jetting device is cyclically controlled according to a preset frequency, and the preset frequency is determined according to the characteristics of the material transported by the discharger.

[0012] In certain embodiments, the discharge port is connected to a feed pipe, the feed pipe is connected to downstream processing equipment, a pressure sensor is provided on the feed pipe, and the start and stop of the jet device is controlled according to the pressure of the feed pipe and a preset pressure threshold.

[0013] In some embodiments, the blowing pressure ranges from [0.3MPa, 0.8MPa].

[0014] In some embodiments, the blowing gas consumption of the blowing device ranges from [0.05m 3 / h, 0.1m 3 / h].

[0015] The discharger of the embodiment of the present application is provided with an air jet device, a shell and a blade, the blade is located in the accommodating chamber of the shell, and an air blowing port connecting the accommodating chamber and the air jet device is opened on the shell, so that the air jet device can blow air into the accommodating chamber through the air blowing port. The blade is located in the accommodating chamber, so the air jet device can blow air to the blade, so that the material adhering to the blade can be blown by the gas ejected by the air jet device and no longer adhere to the blade, thereby completing the cleaning of the blade. In this way, it can be ensured that the material adhering to the blade can be cleaned in time to prevent the sticky material from continuously adhering to the discharger and blocking the discharger, causing the equipment to operate poorly or terminate, thereby improving the operating stability of the discharger.

[0016] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of the structure of a discharger in some embodiments of the present application;

[0019] Figure 2 yes Figure 1 A schematic structural diagram of the discharger from another angle is shown.

[0020] Description of main component symbols:

[0021] 100. Discharger;

[0022] 10. Shell; 11. Accommodating chamber; 12. Feed inlet; 13. Discharge outlet; 14. Air blowing outlet; 15. Shaft end face; 16. Rotation surface;

[0023] 20. Blade, R1, rotation direction;

[0024] 30. jet device; 31. jet pipe; 32. jet air source; 33. pressure regulating valve; 34. solenoid valve; 35. jet port;

[0025] 40. Feeding pipe; 50. Pressure sensor. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0027] Rotary unloaders are widely used in the field of bulk material and powder flow control and transportation. They are important equipment for bulk material and powder flow control. Rotary unloaders generally play two main roles: one is to control the speed of the material flowing down by its own weight, which can play a role in flow control and even metering; the other is to lock the air and isolate the upper and lower spaces, so that the upper and lower parts are not connected in terms of pressure, gas, etc. Rotary unloaders are widely used in environmental protection, warehousing, transportation and other fields.

[0028] Granular materials are good application scenarios due to their own characteristics, such as high material fluidity and low adhesion. Under this condition, the rotary unloader is stable, reliable and mature in technology. However, in some application scenarios of powder materials with high moisture absorption and adhesion, the use of rotary unloaders exposes the shortcomings of the application. Powder materials are easy to adhere to the unloader, resulting in unstable volume of the rotary bin of the blades in the unloader, which can easily lead to blockage, abnormal noise, flow shrinkage, etc. in the operation of the device, and the equipment failure rate is extremely high. If the flow is small, the flow is erratic and cannot achieve accurate flow control. If the flow is large, the equipment is blocked, the material flow stops, or the equipment is overloaded and worn, and the motor is burned. Therefore, the effect of the rotary unloader in the application scenario with adhesive powder is uneven, and the equipment operation stability is generally poor. In most actual use scenarios, the unloader is blocked due to sticky powder, which requires manual on-site disassembly and cleaning. The working environment is harsh and the work intensity is high, so this type of use scenario is seriously criticized by operators and maintenance personnel.

[0029] To this end, people have also made many attempts to improve the anti-sticking of the star-shaped rotary bin of the rotary unloader, such as mechanical vibration, anti-sticking coating, temperature rise and moisture-proof, fluidized backflush, modified structure and other measures, which have played a partial improvement role, but at the same time, it also comes with various disadvantages such as high equipment cost, high operating costs, complex structure, high failure rate, and difficult repair and maintenance. It has not perfectly solved the core problem of sticky powder sticking to the rotary unloader and affecting the stable operation of the equipment. It is still necessary to continue to improve the operating reliability of the rotary unloader under sticky powder conditions.

[0030] In order to solve the above problems, the present application embodiment provides a discharger 100, and the discharger 100 of the present application will be described in detail below:

[0031] See also Figure 1 and Figure 2 The embodiment of the present application provides a discharger 100, which includes a shell 10, a blade 20 and an air jet device 30. The shell 10 encloses a receiving chamber 11, and the shell 10 is provided with a feed port 12 and a discharge port 13, and the feed port 12 and the discharge port 13 are located on both sides of the receiving chamber 11 and are connected to the receiving chamber 11. The blade 20 is installed in the receiving chamber 11, and the shell 10 is also provided with an air blow port 14 connected to the receiving chamber 11. The air jet device 30 is connected to the air blow port 14, and the air jet device 30 is used to spray air into the receiving chamber 11 through the air blow port 14.

[0032] Specifically, the discharger 100 is the main equipment for dust removal equipment to discharge dust, air supply and other equipment to feed materials, and is suitable for powdery materials and granular materials. It can quickly and accurately discharge materials from the container, greatly improving work efficiency. The discharger 100 includes a common discharger 100, a pressure-resistant discharger 100, a high-temperature-resistant discharger 100 and a star-shaped discharger 100.

[0033] The shell 10 is a structure having a cavity (i.e., a containing chamber 11) for accommodating other components. Other components of the discharger, such as the blades 20, can be installed in the shell 10. The shell 10 can be used to isolate the other components of the discharger from the outside world to prevent the other components from being easily damaged by external forces, and to prevent external impurities, such as dust, from entering the other components and affecting the normal operation of the other components. The shell 10 is provided with a feed port 12 and a discharge port 13. The feed port 12 is connected to the silo of the material, and the discharge port 13 is connected to the discharge pipe 40, and the discharge pipe 40 is connected to the downstream processing equipment. The material in the silo enters the containing chamber 11 from the feed port 12, then leaves the containing chamber 11 from the discharge port 13, and successively enters the discharge pipe 40 and the downstream processing equipment, thereby completing the transportation of the material.

[0034] The blade 20 is rotatably mounted on the housing 10 and is located in the accommodating chamber 11, wherein the rotation direction of the blade 20 is shown as R1. During the material transportation process, the blade 20 can rotate continuously, and a rotary bin can be formed between the two connected blades 20. After the material enters the accommodating chamber 11 from the feed port 12, it will enter the rotary bin. As the blade 20 rotates, the rotary bin will be connected to the discharge port 13, and the material in the rotary bin can be moved to the discharge port 13, thereby ensuring that the material can be smoothly discharged from the silo. The volume of the rotary bin is limited, so the amount of material transported by the rotary bin each time is also limited. In this way, the discharger 100 can achieve quantitative and continuous unloading, avoiding waste or shortage of materials during the unloading process. In addition, metering can be achieved by determining the number of rotations of the blade 20. At the same time, the material transportation speed can be controlled by controlling the rotation speed of the blade 20, thereby achieving a flow control effect. In the pneumatic conveying system, the blade 20 also plays a sealing role. It can effectively prevent air from being sucked in from the discharge port during the pneumatic conveying process, thereby ensuring the normal discharge of the discharger 100.

[0035] The shell 10 is also provided with a blowing port 14 connected to the jet device 30, and the blowing port 14 is connected to the accommodating chamber 11. The jet device 30 may include a jet gas source 32 and a jet pipe 31, and the two ends of the jet pipe 31 are respectively connected to the jet gas source 32 and the blowing port 14. The jet gas source 32 stores high-pressure gas, and the gas can flow along the jet pipe 31 and enter the accommodating chamber 11 through the jet port. After entering the accommodating chamber 11, the gas impacts the contacted material, driving the material on the blade 20 located in the accommodating chamber 11 to move. In this way, the jet device 30 can blow toward the blade 20 in the accommodating chamber 11, so that even if there is material adhering to the blade 20, the gas ejected by the jet device 30 can blow the material so that the material no longer adheres to the blade 20, thereby completing the blowing cleaning of the blade 20. Among them, the optimal position and angle of the air port 14 can be obtained in advance based on the specific structural test of the discharger 100 to ensure that the position and angle of the air port 14 are reasonably selected, so that the contact area between the gas ejected by the jet device 30 and the blade 20 is larger, and the force of the gas blowing the material is greater, thereby being able to effectively clean the blade 20.

[0036] At this time, the jet device 30 is located outside the shell 10, so that the setting of the jet device 30 does not affect the layout of various components inside the shell 10, so as to facilitate the installation of the jet device 30, and the jet device 30 can be replaced or maintained online under the condition that other components of the discharger 100 are in continuous operation. At the same time, the setting mode of the jet device 30 being located outside the shell 10 allows the present application to be directly applied to the existing old discharger 100 in operation. It only requires a simple modification and upgrade of the old discharger 100, an air blowing port 14 is opened on the shell 10, and the jet device 30 is installed outside the shell 10, so as to form the discharger 100 of the present application and realize the self-cleaning function without replacing the entire discharger 100. In this way, the application scope of the present application is wider and the threshold for use is lower.

[0037] In this way, the present application can utilize the jet device 30 to self-clean the blade 20, so that the material adhering to the blade 20 can be cleaned in time, so as to solve the problem of sticky powder continuously adhering to the rotary bin of the discharger 100 and blocking the discharger 100, causing the equipment to operate poorly or terminate.

[0038] At the same time, the materials adhered to the blades 20 can be cleaned, so that the cleaned rotary bin will not adhere to materials during this transportation process, and the rotary bin can feed materials with almost the same volume each time. For example, if the air outlet 14 is connected to the discharge port 13, the jet device 30 can jet clean the rotary bin when the rotary bin is connected to the discharge port 13. It can be understood that after the rotary bin completes a round of feeding, the jet device 30 will clean it so that no materials are adhered to the rotary bin. In this way, when the rotary bin carries out the next round of feeding and is connected to the feed port 12 again, the rotary bin can accommodate the materials input by the feed port 12 with 100% of the volume, that is, 100% dust is adhered. Therefore, the present application can also solve the problem of continuous stability of the volume of the rotary bin of the discharger 100, ensure the discharger 100's accurate control of flow and metering functions, and prevent the volume of the rotary bin from losing the flow control and metering functions of the material due to the erratic dust.

[0039] In addition, the present application improves the function of the original discharger 100 without increasing the structural complexity of the original discharger 100, and the daily maintenance is simple, and can be quickly repaired and maintained online without stopping the machine.

[0040] The discharger 100 of the embodiment of the present application is provided with an air jet device 30, a shell 10 and a blade 20. The blade 20 is located in the accommodating chamber 11 of the shell 10, and an air blowing port 14 is provided on the shell 10 to connect the accommodating chamber 11 and the air jet device 30, so that the air jet device 30 can blow air into the accommodating chamber 11 through the air blowing port 14. The blade 20 is located in the accommodating chamber 11, so the air jet device 30 can blow air to the blade 20, so that the material adhering to the blade 20 can be blown by the gas ejected by the air jet device 30 and no longer adhere to the blade 20, thereby completing the cleaning of the blade 20. In this way, it can be ensured that the material adhering to the blade 20 can be cleaned in time to prevent the sticky material from continuously adhering to the discharger 100 and blocking the discharger 100, thereby preventing the equipment from running smoothly or terminating, thereby improving the operation stability of the discharger 100.

[0041] See also Figure 1 and Figure 2 In some embodiments, the blowing port 14 is located on at least one of the axial end surface 15 or the rotating surface 16 of the shell 10 .

[0042] Specifically, the shaft end face 15 of the housing 10 generally refers to the planes connected to the shaft and located at both ends of the shaft in the housing 10. The shaft end face 15 is the contact surface between the housing 10 and the shaft, and plays a role in supporting and transmitting force. The revolving surface 16 of the housing 10 refers to the curved surface formed by the middle surface of the housing 10 being rotated around its revolving axis by a straight line or a plane curve.

[0043] The number of the air outlets 14 may be one or more, which is specifically determined according to the number of the air jet devices 30 . The number of the air jet devices 30 may also be one or more, which is specifically determined according to the cleaning requirements and the structure of the housing 10 .

[0044] The air blowing port 14 may be located at least one of the axial end face 15 or the rotating surface 16 of the shell 10, that is, the air blowing port 14 may be located only at the axial end face 15 of the shell 10, or the air blowing port 14 may be located only at the rotating surface 16 of the shell 10, or there may be multiple air blowing ports 14, some of which are located at the axial end face 15 of the shell 10, and some of which are located at the rotating surface 16 of the shell 10. At this time, it can be determined first according to the structure of the shell 10 whether the setting position of the jet device 30 is toward the axial end face 15 of the shell 10 or the rotating surface 16 of the shell 10, and then the position of the air blowing port 14 is determined based on the position of the jet device 30. Preferably, the air blowing port 14 is located at the axial end face 15 of the shell 10, so that the gas can be used to spray and clean the blades 20 and the rotating bin composed of the blades 20 passing through the air blowing port 14 in the rotating axial direction.

[0045] In this way, the air outlet 14 is arranged on the rotating surface 16 or the axial end surface 15 of the shell 10 to ensure that the gas ejected from the air outlet 14 can blow toward the blade 20, so as to blow the material adhered to the blade 20 so that the material no longer adheres to the blade 20, thereby achieving cleaning of the blade 20.

[0046] See also Figure 1 and Figure 2 In some embodiments, the air port 14 is connected to the discharge port 13, that is, the air port 14 is located in the area of ​​the housing 10 close to the discharge port 13, so that the gas blown in by the air port 14 can directly enter the discharge port 13 during the rotation of the blade 20. In this way, after the air port 14 blows the material adhering to the blade 20, the material can directly enter the discharge port 13 under the action of gravity or driven by the gas, and will not fall on the blade 20 again, so that the cleaning effect of the jet device 30 is more thorough.

[0047] Preferably, the blowing port 14 is located in the axial end face 15 of the shell 10, the blowing port 14 is connected to the discharge port 13, and the central axis of the blowing port 14 coincides with the central axis of the axial end face 15. The central axis of the axial end face 15 usually coincides with the central axis of the discharge port 13, so the central axis of the blowing port 14 also coincides with the central axis of the axial end face 15. The diameter of the discharge port 13 is usually larger than the distance between the tops of two adjacent blades 20, that is, the diameter of the discharge port 13 is usually larger than the size of the opening of the rotary bin. In this way, it can be ensured that the material blown by the gas in the rotary bin passing through the blowing port 14 can directly fall into the discharge port 13, and will not fall into other positions of the shell 10 or the blades 20, thereby ensuring that the cleaning effect of the jet device 30 is more thorough.

[0048] See also Figure 1 and Figure 2 In some embodiments, the aperture of the air port 14 has a value range of [6mm, 10mm], for example, 6mm, 7.1mm, 7.6mm, 8mm, 8.6mm, 9.7mm or 10mm. Preferably, the aperture of the air port 14 is 8mm. If the aperture of the air port 14 is too small, for example, 5mm, the volume of the gas entering the accommodating chamber 11 may be too small, making it difficult for the gas to achieve a more thorough cleaning of the blades 20. If the aperture of the air port 14 is too large, for example, 11mm, the flow rate of the gas in the accommodating chamber 11 may be reduced, because a larger hole allows more fluid to enter at the same time, making it difficult for the gas to blow materials with strong viscosity, thereby affecting the cleaning effect of the gas.

[0049] Therefore, the aperture of the air port 14 needs to be selected within [6mm, 10mm]. Within this range, the aperture of the air port 14 is determined according to the specific sizes of the shell 10 and the blade 20. For example, if the sizes of the shell 10 and the blade 20 are large, a larger blowing area is required to ensure that the entire blade 20 can be effectively cleaned. In this case, the aperture of the air port 14 can also be set larger to ensure that the volume of the gas blown into the air port 14 is sufficient, and the gas can quickly flow through the blade 20 near the air port 14 and blow all the materials on the entire blade 20, thereby ensuring that no material is adhered to the blade 20 through which the gas flows, thereby ensuring the cleaning effect of the jet device 30 on the blade 20.

[0050] Thus, the aperture of the air port 14 can be selected within the range of [6 mm, 10 mm] to ensure that the flow rate and volume of the gas in the accommodating chamber 11 are sufficient to comprehensively and effectively clean the blades 20, thereby ensuring the cleaning effect of the jet device 30.

[0051] See also Figure 1 and Figure 2 In some embodiments, the jet device 30 includes an jet pipe 31, a jet air source 32, a pressure regulating valve 33 and a solenoid valve 34. A jet head 35 is provided at one end of the jet pipe 31, and the jet head 35 is installed at the air port 14. The other end of the jet pipe 31 is connected to the jet air source 32. The pressure regulating valve 33 and the solenoid valve 34 are installed on the jet pipe 31. The pressure regulating valve 33 is used to adjust the jet pressure of the jet pipe 31, and the solenoid valve 34 is used to control the switch of the jet pipe 31.

[0052] Specifically, the gas, which may be compressed gas, is stored in the spray gas source 32 so that the gas can maintain high-speed flow after flowing into the accommodating chamber 11 to increase the cleaning force of the gas on the blades 20. A pressure regulating valve 33 and a solenoid valve 34 may also be installed on the jet pipe 31. The opening of the pressure regulating valve 33 may be controlled to change the resistance in the jet pipe 31, thereby controlling the spray pressure of the jet pipe 31. It can be understood that the greater the spray pressure, the greater the cleaning force of the gas on the blades 20. The switch of the jet pipe 31 may be controlled by controlling the opening of the solenoid valve 34 to achieve control of the jet. Among them, the spray time and the spray pressure may be flexibly adjusted according to the characteristics of the material. For example, the greater the viscosity of the material, the longer the spray time may be set, and the greater the spray pressure may be set.

[0053] A blowing head 35 is provided at one end of the air jet pipe 31 connected to the air port 14, and the gas from the air jet source 32 enters the accommodating chamber 11 through the blowing head 35 to clean the blades 20. The blowing angle of the blowing head 35 can be obtained according to the specific structural test of the discharger 100 to ensure that the blowing angle of the blowing head 35 is reasonably selected, so that the contact area between the gas sprayed from the blowing head 35 and the blades 20 is large, and the force of the gas when blowing the material is large, so that the blades 20 can be effectively cleaned.

[0054] In one embodiment, the blowing head 35 is detachably mounted on the air jet pipe 31, and the detachable mounting method includes threaded mounting, buckle mounting or latch mounting. The blowing head 35 can be designed as a standard module, so that different apertures and spray angles can be flexibly replaced in the interface hole of the same air jet pipe 31.

[0055] In addition, the jet device 30 is a separate device in the discharger 100, and the discharger 100 can independently control the start and stop of the jet device 30. At this time, the switch of the jet device 30 is interlocked with the main switch of the discharger 100, wherein the interlocking binding means that the switch state of the jet device 30 is associated with other components in the discharger 100, such as the switch state of the blade 20, through electrical connection or signal transmission, so that they can be synchronized or linked according to a certain logical sequence or condition. Control, so that the jet device 30 can be controlled by electrical automatic logic, so as to realize the automatic control operation of the jet device 30.

[0056] In this way, the jet device 30 can use the pressure regulating valve 33 and the solenoid valve 34 to control the blowing pressure and start and stop the blowing, so that the jet device 30 can be automatically controlled and operated without manual intervention in the start and stop of the jet device 30, thereby reducing labor costs.

[0057] See also Figure 1 and Figure 2 In some embodiments, the gas stored in the blowing gas source 32 is compressed air or compressed inert gas, such as compressed nitrogen or compressed helium. In this way, when the compressed gas is sprayed into the accommodating cavity 11, the compressed gas will not react with the material and will not affect the composition of the material during the cleaning of the blade 20, thereby facilitating the safe transportation of the material. Preferably, the gas stored in the blowing gas source 32 is compressed air, which has a wider source, so the use of compressed air is conducive to increasing the use scenarios of the present application.

[0058] See also Figure 1 and Figure 2In some embodiments, the start and stop of the jet device 30 is cyclically controlled according to a preset frequency, for example, the preset frequency may be once every ten seconds. The preset frequency may be determined according to the characteristics of the material, for example, the higher the viscosity of the material, the higher the preset frequency may be set. The discharger 100 also includes a controller, which may control the opening of the solenoid valve 34 according to the preset frequency, that is, determine the opening duration and closing duration of the solenoid valve 34 according to the preset frequency, and then cyclically control the switch of the solenoid valve 34 according to the opening duration and closing duration. In this way, on the one hand, the automatic control of the start and stop of the jet device 30 can be achieved, and on the other hand, it can ensure that the jet device 30 can clean the blades 20 in a timely manner to prevent excessive material from adhering to the blades 20.

[0059] See also Figure 1 and Figure 2 In some embodiments, the discharge port 13 is connected to a feed pipe 40, the feed pipe 40 is connected to a downstream processing device, a pressure sensor 50 is provided on the feed pipe 40, and the start and stop of the jet device 30 is controlled according to the pressure of the feed pipe 40 and a preset pressure threshold.

[0060] Specifically, gas also flows through the material discharge pipe 40, so as to use the gas to drive the material to move in the material discharge pipe 40. When there is material on the material discharge pipe 40, the pressure of the material discharge pipe 40 will increase. A pressure sensor 50 is provided on the material discharge pipe 40, and the pressure sensor 50 can be used to detect the pressure in the material discharge pipe 40.

[0061] Therefore, the transportation effect of the blade 20 can be judged by the pressure of the discharge pipe 40. When the pressure of the discharge pipe 40 is small, it can be considered that more materials adhere to the blade 20 and do not fall into the discharge pipe 40. During the transportation process, the start and stop of the jet device 30 can be controlled according to the transportation effect of the blade 20.

[0062] A preset pressure threshold may be preset, and the preset pressure threshold is the minimum pressure of the discharge pipe 40 when most of the material transported by the blade 20 falls into the discharge pipe 40, and even if there is material adhering to the blade 20, the material will not affect the operation of the discharger 100. When the pressure of the discharge pipe 40 is greater than the preset pressure threshold, it can be considered that most of the material transported by the blade 20 falls into the discharge pipe 40, and at this time, there may be no material adhering to the blade 20, or only a small amount of material adhering, but this part of the material adhering does not affect the operation of the discharger 100, and the jet device 30 can be controlled to stop operating. When the pressure of the discharge pipe 40 is less than the preset pressure threshold, it can be considered that there is a lot of material adhering to the blade 20, and the jet device 30 can be controlled to operate to clean the blade 20 as soon as possible, thereby ensuring that too much material does not adhere to the blade 20, thereby ensuring the operational stability of the blade 20.

[0063] During operation, the pressure on the feed pipe 40 may fluctuate. There may be a situation where there is not much material adhering to the blade 20, but the pressure of the feed pipe 40 is less than the preset pressure threshold. Therefore, a preset time length can also be set, and the preset time length is the maximum time length during which there is not much material adhering to the blade 20, but the pressure of the feed pipe 40 is less than the preset pressure threshold. When the time length during which the pressure of the feed pipe 40 is less than the preset pressure threshold exceeds the preset time length, it can be considered that there is indeed a lot of material adhering to the blade 20. At this time, the blade 20 needs to be cleaned, and then the jet device 30 is turned on. When the pressure of the feed pipe 40 is greater than the preset pressure threshold, the jet device 30 can be turned off.

[0064] In this way, it is possible to judge whether there is a lot of material adhering to the blade 20 based on the pressure of the discharge pipe 40, and when it is determined that there is a lot of material adhering to the blade 20, the jet device 30 can be started in time to ensure that the blade 20 can be cleaned in time to prevent the situation where a lot of material adheres to the blade 20 and the operation of the discharger 100 is affected, thereby improving the operating stability of the discharger 100.

[0065] See also Figure 1 and Figure 2 In some embodiments, the blowing pressure is in the range of [0.3MPa, 0.8MPa], for example, 0.3MPa, 0.42MPa, 0.57MPa, 0.63MPa, 0.77MPa or 0.8MPa. The blowing pressure of compressed air is usually below 0.8MPa, and if the blowing pressure is too low, it may affect the cleaning effect of the gas on the blade 20. Thus, selecting the blowing pressure in the range of [0.3MPa, 0.8MPa] can ensure a better cleaning effect of the gas on the blade 20.

[0066] See also Figure 1 and Figure 2 In some embodiments, the gas consumption of the blowing device ranges from [0.05m 3 / h, 0.1m 3 / h], for example, 0.05m 3 / h, 0.062m 3 / h, 0.075m 3 / h, 0.088m 3 / h, 0.093m 3 / h or 0.1m 3 / h. If the air consumption is too small, for example, 0.04m 3 / h, the cleaning power of the gas may be too weak. If the gas consumption is too large, for example, 0.13m 3 / h, it may result in excessive cost. Therefore, it can be 3 / h, 0.1m 3 / h] to achieve low gas consumption and reduce costs on the one hand, and to ensure sufficient cleaning power of the gas on the other hand.

[0067] In summary, sticky powders are mainly used for powdery materials that are easy to absorb moisture and stick together, including but not limited to lime, fly ash, baking soda, etc., which are widely used in environmental protection, chemical, energy, steel, power and other industries. The sticky powders in the unloader cause large flow control errors, flow interruptions, pipeline blockages and other problems, which not only make it difficult to ensure stable fine control, but also increase operating costs. At the same time, the direct and indirect losses caused by equipment failure maintenance or replacement are also quite significant.

[0068] The discharger 100 of the present application can clean the blades 20 in time, so that the discharger 100 can effectively avoid various problems caused by powder sticking to the discharger 100, thereby facilitating the improvement of the operation stability of the discharger 100 and reducing losses. In addition, the discharger 100 of the present application has a simple and compact structure, and the materials are common and widely available, and most of them are standard equipment with low cost. Compared with other forms of dischargers used in sticky powder scenes, the discharger 100 of the present application has a lower cost itself, and the cost is much lower than other forms of dischargers under the condition of stable and efficient operation.

[0069] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0070] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0071] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A discharger, characterized in that: include: A shell, the shell encloses a containing cavity, the shell is provided with a feed inlet and a discharge port, the feed inlet and the discharge port are located on both sides of the containing cavity and are communicated with the containing cavity; A blade, wherein the blade is installed in the accommodating cavity, and the shell is further provided with an air blowing port connected with the accommodating cavity; An air jet device is connected to the air outlet and is used to jet air into the accommodating cavity through the air outlet.

2. The discharger according to claim 1, characterized in that: The air blowing port is located at least one of the axial end surface or the rotation surface of the shell.

3. The discharger according to claim 1, characterized in that: The air blowing port is communicated with the material discharging port.

4. The discharger according to claim 1, characterized in that: The aperture of the air blowing port has a value range of [6mm, 10mm].

5. The discharger according to claim 1, characterized in that: The jet device includes an jet pipe, a blowing air source, a pressure regulating valve and a solenoid valve. A jet head is provided at one end of the jet pipe, and the blowing head is installed at the blowing port. The other end of the jet pipe is connected to the blowing air source. The pressure regulating valve and the solenoid valve are installed on the jet pipe. The pressure regulating valve is used to adjust the blowing pressure of the jet pipe, and the solenoid valve is used to control the switch of the jet pipe.

6. The discharger according to claim 5, characterized in that: The blowing head is detachably mounted on the blowing port, and the blowing head adopts a standard module.

7. The discharger according to claim 5, characterized in that: The gas stored in the blowing gas source is compressed air or compressed inert gas.

8. The discharger according to claim 1, characterized in that: The start and stop of the jetting device is cyclically controlled according to a preset frequency, and the preset frequency is determined according to the characteristics of the material transported by the discharger.

9. The discharger according to claim 1, characterized in that: The discharge port is connected to a feed pipe, the feed pipe is connected to downstream processing equipment, a pressure sensor is provided on the feed pipe, and the start and stop of the jet device is controlled according to the pressure of the feed pipe and a preset pressure threshold.

10. The discharger according to claim 5, characterized in that: The value range of the injection pressure is [0.3MPa, 0.8MPa].

11. The discharger according to claim 5, characterized in that: The value range of the blowing gas consumption of the blowing device is [0.05m 3 / h, 0.1m 3 / h].

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