Coulter type mixing machine

Abstract

The utility model provides a coulter type mixing machine, and relates to the technical field of material mixing. The coulter mixer comprises: a mixing cylinder; the main shaft penetrates through the two ends of the mixing barrel, and main shaft sealing structures are arranged at the two ends of the main shaft and provided with main shaft air inlets; the fly cutter is mounted on the mixing barrel and provided with a fly cutter sealing structure, and the fly cutter sealing structure is provided with a fly cutter air inlet; the gas conveying mechanism comprises a first gas inlet pipe, a second gas inlet pipe, a main shaft pipeline and a fly-cutter pipeline, the first gas inlet pipe and the second gas inlet pipe are both communicated with the gas source, the first gas inlet pipe and the second gas inlet pipe are both communicated with the main shaft pipeline and the fly-cutter pipeline, the main shaft pipeline is communicated with the main shaft gas inlet, and the fly-cutter pipeline is communicated with the fly-cutter gas inlet. According to the coulter type mixing machine disclosed by the utility model, the service life of the coulter type mixing machine is prolonged while fine metering is not influenced through a sealing mode that two paths of air sources with different pressures are reversely blown from the same air inlet.

Description

Technical Field

[0001] This application relates to material mixing technology, and particularly to a ploughshare mixer. Background Art

[0002] During the production process of ternary products, a ploughshare mixer is mainly used to stir and mix materials. The ploughshare mixer is an efficient mixing device, which can be divided into a horizontal ploughshare mixer and a multi-functional ploughshare mixer according to the structural type.

[0003] Taking the horizontal ploughshare mixer as an example, when it works, the main shaft drives the ploughshare to rotate, so that the materials achieve high-speed diffusion and convective movement in the mixing barrel, and the materials are broken by the high-speed rotating flying knives, so as to achieve the purpose of uniform mixing of the materials. At present, the used ploughshare mixers are all equipped with a back-blowing structure with a fixed air pressure, which can form a large air flow at the main shaft air inlet and the flying knife air inlet to ensure that the materials will not enter the sealing structures of the main shaft and the flying knives during the feeding and mixing processes. Among them, during the batching process, the back-blowing structure needs to be closed to ensure the accurate metering of the materials.

[0004] However, closing the back-blowing structure during feeding will cause the materials to enter the sealing structures of the main shaft and the flying knives, wear the two sealing structures, reduce the service life of the sealing structures, and increase the use cost of the mixer. Summary of the Utility Model

[0005] In view of the above problems, the embodiments of this application provide a ploughshare mixer, which designs a sealing method of back-blowing from the same air inlet through two air sources with different pressures, which can solve the problem of shortening the service life of the sealing structure caused by closing the sealing back-blowing to ensure the metering accuracy, reduce the spare part cost, and improve the production efficiency.

[0006] The embodiments of this application provide a ploughshare mixer, including: a mixing barrel; a main shaft, passing through the axial two ends of the mixing barrel, and the two ends of the main shaft are provided with main shaft sealing structures, and the main shaft sealing structures have main shaft air inlets; at least one flying knife, the flying knife is installed in the mixing barrel, and the flying knife is provided with a flying knife sealing structure, and the flying knife sealing structure has a flying knife air inlet; a gas conveying mechanism, including a first air inlet pipe, a second air inlet pipe, a main shaft pipeline and a flying knife pipeline, the air inlet ends of the first air inlet pipe and the second air inlet pipe are both communicated with a gas source, the air outlet ends of the first air inlet pipe and the second air inlet pipe are both communicated with the air inlet end of the main shaft pipeline and the air inlet end of the flying knife pipeline, the air outlet end of the main shaft pipeline is communicated with the main shaft air inlet, and the air outlet end of the flying knife pipeline is communicated with the flying knife air inlet.

[0007] In a possible implementation, the main shaft pipeline includes a first access pipe, a second access pipe, and a main shaft delivery pipe. The air inlet end of the first access pipe is connected to the first air inlet pipe, and the air inlet end of the second access pipe is connected to the second air inlet pipe. The air outlet ends of the first access pipe and the second access pipe are both connected to the air inlet end of the main shaft delivery pipe, and the air outlet end of the main shaft delivery pipe is connected to the main shaft air inlet. The flying knife pipeline includes a first inlet pipe, a second inlet pipe, and a flying knife delivery pipe. The air inlet end of the first inlet pipe is connected to the first air inlet pipe, and the air inlet end of the second inlet pipe is connected to the second air inlet pipe. The air outlet ends of the first inlet pipe and the second inlet pipe are both connected to the air inlet end of the flying knife delivery pipe, and the air outlet end of the flying knife delivery pipe is connected to the flying knife air inlet.

[0008] In a possible implementation, a first main shaft pressure reducing valve is provided on the first access pipe, and a second main shaft pressure reducing valve is provided on the second access pipe; a first flying knife pressure reducing valve is provided on the first inlet pipe, and a second flying knife pressure reducing valve is provided on the second inlet pipe.

[0009] In a possible implementation, a first control valve is provided on the first air inlet pipe, and a second control valve is provided on the second air inlet pipe.

[0010] In a possible implementation, the inlet air pressure of the first air inlet pipe is 0.2 Mpa - 0.3 Mpa, and the inlet air pressure of the second air inlet pipe is 0.01 Mpa - 0.08 Mpa.

[0011] In a possible implementation, the plow knife mixer further includes: a dust collection pipeline, which is connected to the mixing barrel.

[0012] In a possible implementation, a regulating valve is provided on the dust collection pipeline, and a pressure transmitter is installed on the mixing barrel. The pressure transmitter is electrically connected to the regulating valve.

[0013] In a possible implementation, a standby valve is further provided on the dust collection pipeline, and the standby valve is connected in parallel with the regulating valve.

[0014] In a possible implementation, switch valves are installed on both sides of the regulating valve.

[0015] In a possible implementation, a switch valve is connected between the pressure transmitter and the mixing barrel.

[0016] In a possible implementation, the main shaft delivery pipe includes a main shaft main pipe and two main shaft branch pipes; the air inlet end of the main shaft main pipe is respectively connected to the first access pipe and the second access pipe, the air inlet ends of the two main shaft branch pipes are both connected to the air outlet end of the main shaft main pipe, and the air outlet ends of the two main shaft branch pipes are respectively connected to the main shaft air inlets at both ends of the main shaft.

[0017] In a possible implementation, the number of flying knives is multiple, and the flying knife conveying pipe includes a main flying knife pipe and multiple flying knife branch pipes; the air inlet end of the main flying knife pipe is respectively communicated with the first inlet pipe and the second inlet pipe, the air inlet end of each flying knife branch pipe is communicated with the air outlet end of the main flying knife pipe, and each flying knife branch pipe is provided with a flying knife air inlet.

[0018] The plow knife type mixer provided by the present application includes a mixing cylinder, a main shaft, flying knives and a gas conveying mechanism. Sealing structures of the main shaft are arranged at both ends of the main shaft, and a main shaft air inlet is arranged on the sealing structures of the main shaft. The flying knives are provided with flying knife sealing structures, and flying knife air inlets are arranged on the flying knife sealing structures. The gas conveying mechanism includes a first inlet pipe, a second inlet pipe, a main shaft pipeline and a flying knife pipeline. The air outlet ends of the first inlet pipe and the second inlet pipe are both communicated with the air inlet ends of the main shaft pipeline and the flying knife pipeline. The air outlet end of the main shaft pipeline is communicated with the main shaft air inlet, and the air outlet end of the flying knife pipeline is communicated with the flying knife air inlet. During the material feeding process, in the initial metering stage, the first inlet pipe is opened and the second inlet pipe is closed, and gas flows in from the first inlet pipe and respectively flows into the main shaft air inlet and the flying knife air inlet through the main shaft pipeline and the flying knife pipeline. At this time, due to the relatively large air pressure, a relatively large air flow can be formed at the sealing structures of the main shaft and the flying knives, so that the material is far away from the sealing structures of the main shaft and the flying knives. In the fine metering stage, the second inlet pipe is opened and the first inlet pipe is closed, and gas flows in from the second inlet pipe and flows into the main shaft air inlet and the flying knife air inlet along the main shaft pipeline and the flying knife pipeline. At this time, the pressure of the gas entering is very small, and only a micro air flow can be formed at the sealing structures of the main shaft and the flying knives. It can ensure that the material will not approach the sealing structures of the main shaft and the flying knives without affecting the fine metering. Therefore, the plow knife type mixer of the present application can extend the service life of the plow knife type mixer, save the maintenance cost of the equipment and improve the production efficiency by setting a sealing method of back blowing from the same air inlet through two different pressure gas sources. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the gas path structure of the existing plow knife type mixer;

[0021] Figure 2 It is a schematic diagram of the gas path structure of the plow knife type mixer provided by the embodiment of the present application;

[0022] Figure 3Schematic diagram of the local gas path structure in two states provided in the embodiments of the present application.

[0023] Description of reference numerals:

[0024] 10- Ploughshare mixer;

[0025] 100-mixing barrel; 200-spindle; 300-flying knife; 400-gas conveying mechanism; 500-dust collection pipeline;

[0026] 110-pressure transmitter; 120-switching valve; 210-spindle sealing structure; 220-spindle motor; 310-flying knife sealing structure; 410-first air inlet pipe; 420-second air inlet pipe; 430-spindle pipeline; 440-flying knife pipeline; 510-regulating valve; 520-spare valve; 530-switching valve;

[0027] 211-spindle air inlet; 221-spindle motor base; 311-flying knife air inlet; 411-first control valve; 421-second control valve; 431-first access pipe; 432-second access pipe; 433-spindle delivery pipe; 441-first inlet pipe; 442-second inlet pipe; 443-flying knife delivery pipe;

[0028] 4311- first spindle pressure reducing valve; 4321- second spindle pressure reducing valve; 4331- spindle main pipe; 4332- first spindle delivery branch pipe; 4333- second spindle delivery branch pipe; 4411- first flying knife pressure reducing valve; 4421- second flying knife pressure reducing valve; 4431- flying knife main pipe. DETAILED DESCRIPTION

[0029] As described in the background technology, horizontal plowshare mixers are currently used in the mixing process of ternary products. Figure 1 As shown, the existing horizontal plowshare mixer 1 is mainly composed of a plowshare housing 10, a main shaft pipeline 20, a flying knife pipeline 30, an air intake pipeline 40 and other components. The main shaft pipeline 20 and the flying knife pipeline 30 are both provided with a sealing device and a sealing backflush structure, which are respectively connected to an air intake pipeline 40. The sealing backflush structure can prevent the material from entering the sealing device during the mixing process and causing wear to the sealing device. However, in actual application, in the batching process, in order to ensure accurate metering, the sealing backflush structure needs to be closed, which causes the material to enter the sealing device due to the closure of the sealing backflush during the unloading process, which reduces its service life and increases the use cost of the mixer.

[0030] In view of this, the plow knife type mixer provided by the present application includes a mixing cylinder, a main shaft, flying knives and a gas conveying mechanism. Sealing structures of the main shaft are arranged at both ends of the main shaft, and a main shaft air inlet is arranged on the sealing structure of the main shaft. The flying knives are provided with flying knife sealing structures, and flying knife air inlets are arranged on the flying knife sealing structures. The gas conveying mechanism includes a first air inlet pipe, a second air inlet pipe, a main shaft pipeline and a flying knife pipeline. The main shaft pipeline includes a first access pipe, a second access pipe and a main shaft conveying pipe. The flying knife pipeline includes a first inlet pipe, a second inlet pipe and a flying knife conveying pipe. The first air inlet pipe is communicated with the air inlet ends of the first access pipe and the first inlet pipe, and the second air inlet pipe is communicated with the air inlet ends of the second access pipe and the second inlet pipe. The air outlet end of the first access pipe and the air outlet end of the second access pipe are communicated with the main shaft air inlet, and the air outlet end of the first inlet pipe and the air outlet end of the second inlet pipe are communicated with the flying knife air inlet. During the material feeding process, in the initial metering stage, the first air inlet pipe is opened and the second air inlet pipe is closed. Gas flows in from the first air inlet pipe and respectively flows into the main shaft air inlet and the flying knife air inlet through the first access pipe and the first inlet pipe. At this time, due to the relatively high air pressure, a relatively large air flow can be formed at the main shaft sealing structure and the flying knife sealing structure, so that the material is far away from the main shaft sealing structure and the flying knife sealing structure. In the fine metering stage, the second air inlet pipe is opened and the first air inlet pipe is closed. Gas flows in from the second air inlet pipe and respectively flows into the main shaft air inlet and the flying knife air inlet through the second access pipe and the second inlet pipe. At this time, the pressure of the incoming gas is very small, and only a micro air flow will be formed at the main shaft sealing structure and the flying knife sealing structure. It can ensure that the material will not approach the main shaft sealing structure and the flying knife sealing structure without affecting the fine metering. Therefore, the plow knife type mixer of the present application can extend the service life of the mixer, save the maintenance cost of the equipment and improve the production efficiency by setting a sealing method of back blowing from the same air inlet through two different pressure gas sources.

[0031] In order to make the above objects, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0032] Figure 2 It is a schematic structural diagram of the plow knife type mixer provided by the embodiment of the present application. Refer to Figure 2 As shown, the embodiment of the present application provides a plow knife type mixer 10. The plow knife type mixer 10 can be applied to industries such as chemical industry, food, medicine, and metallurgy. The plow knife type mixer 10 is used for material mixing.

[0033] The plow knife mixer 10 includes a mixing cylinder 100, which is the material carrier of the plow knife mixer 10, and the material is contained in the mixing cylinder 100. Taking the horizontal plow knife mixer as an example, the axis of the mixing cylinder 100 can be parallel to the support surface (such as the ground), and the mixing cylinder 100 is supported on the support surface in a horizontal posture.

[0034] The plow knife mixer 10 further includes a main shaft 200, and the main shaft 200 penetrates through the two axial ends of the mixing cylinder 100. Installation holes (not shown in the figure) can be provided on the end covers at the two axial ends of the mixing cylinder 100, and the two ends of the main shaft 200 pass through the installation holes on the end covers at both ends and extend out on both sides of the mixing cylinder 100.

[0035] On one side in the axial direction of the mixing cylinder 100, there is a main shaft motor 220, which is connected to the main shaft 200, and the main shaft motor 220 can drive the main shaft 200 to rotate. Exemplarily, the main shaft motor 220 can be arranged on the main shaft motor base 221, and the motor base 221 plays a role in fixedly supporting the main shaft motor 220.

[0036] Among them, the main shaft 200 is connected to a plow knife that extends spirally (not shown in the figure), and the plow knife rotates with the rotation of the main shaft 200. Under the rotation of the plow knife, the material in the mixing cylinder 100 makes a radial circular turbulence along the cylinder wall, stirring and dispersing the material to make the material fully mixed. Exemplarily, one plow knife can be connected to the main shaft 200, and this plow knife extends towards both ends of the main shaft and spirally extends along the outer surface of the main shaft 200. Or, multiple plow knives can be connected to the main shaft 200, and these multiple plow knives can be evenly spaced along the axial direction of the main shaft 200, and each plow knife spirally extends along the outer surface of the main shaft.

[0037] The plow knife mixer 10 further includes at least one flying knife 300, and the flying knife 300 is installed on the cylinder wall of the mixing cylinder 100. The flying knife 300 is connected to a flying knife motor, and the flying knife motor is fixed on the outside of the mixing cylinder 100 (not shown in the figure). The flying knife 300 is driven by the flying knife motor. Each flying knife can use a single motor, or all the flying knives can share one motor.

[0038] When the mixer 10 is started, the main shaft motor 220 drives the main shaft 200 to operate, and the main shaft 200 drives the plow knife to make a circular motion together, making the material make a radial circular turbulence along the mixing cylinder wall, and at the same time throwing the material out along both sides of the plow knife. When the material flows through the flying knife, it is scattered and cut by the high-speed rotating flying knife. Under the combined action of the plow knife and the flying knife, the material can be quickly and evenly mixed.

[0039] During the mixing process, the main shaft 200 rotates relative to the mixing cylinder 100, and the main shaft 200 is rotatably mounted on the mixing cylinder 100. Therefore, a main shaft sealing structure 210 is usually provided between the end covers at both ends of the mixing cylinder 100 and the main shaft 200. For example, the main shaft sealing structure 210 is provided between the outer wall of the main shaft 200 and the hole wall of the mounting hole on the end cover. The main shaft sealing structure 210 is used to seal the gap between the main shaft 200 and the mixing cylinder 100 to prevent the material in the mixing cylinder 100 from escaping from this gap to the outside of the mixing cylinder 100, so as not to affect the accuracy of material metering and avoid affecting the surrounding environment and operators.

[0040] The main shaft sealing structure 210 is also provided with a main shaft air inlet 211, and the gas entering from the main shaft air inlet 221 can be blown into the mixing cylinder to prevent the material from entering the main shaft sealing structure 210 and causing wear to it.

[0041] In addition, the fly cutter 300 is also provided with a fly cutter sealing structure 310 to prevent the material in the mixing cylinder 100 from leaking. The fly cutter sealing structure 310 can be arranged outside the side wall of the mixing cylinder 100. The fly cutter sealing structure 310 has a fly cutter air inlet 311, and the gas entering from the fly cutter air inlet 311 can enter the mixing cylinder 100 to form an air flow at the fly cutter air inlet 311 to prevent the material from entering the fly cutter sealing structure 310 and causing bearing damage.

[0042] The gas delivery mechanism 400 includes a first inlet pipe 410, a second inlet pipe 420, a main shaft pipeline 430 and a fly cutter pipeline 440.

[0043] The main shaft pipeline 430 includes a first access pipe 431, a second access pipe 432 and a main shaft delivery pipe 433.

[0044] The main shaft delivery pipe 433 includes a main shaft main pipe 4331, a first main shaft delivery branch pipe 4332 and a second main shaft delivery branch pipe 4333.

[0045] The fly cutter pipeline 440 includes a first access pipe 441, a second access pipe 442 and a fly cutter delivery pipe 443.

[0046] The fly cutter delivery pipe 443 includes a fly cutter main pipe 4431 and multiple fly cutter branch pipes.

[0047] In addition, a first control valve 411 is provided on the first inlet pipe 410, and a second control valve 421 is provided on the second inlet pipe 420. The control valve is used to control the on-off of the inlet pipeline.

[0048] A first main shaft pressure reducing valve 4311 is provided on the first access pipe, and a second main shaft pressure reducing valve 4321 is provided on the second access pipe. The first access pipe 431 and the second access pipe 432 are connected in parallel.

[0049] A first fly cutter pressure reducing valve 4411 is provided on the first inlet pipe 441, and a second fly cutter pressure reducing valve 4421 is provided on the second inlet pipe 442. The first inlet pipe 441 and the second inlet pipe 4442 are connected in parallel.

[0050] The intake ends of the first intake pipe 410 and the second intake pipe 420 are both connected to the gas source. The outlet end of the first intake pipe 410 is communicated with the intake end of the first access pipe 431 and the intake end of the first inlet pipe 441. The outlet end of the second intake pipe 420 is communicated with the intake end of the second access pipe 432 and the intake end of the second inlet pipe 442.

[0051] The outlet ends of the first access pipe 431 and the second access pipe 432 are both communicated with the intake end of the main shaft conveying pipe 433. The outlet end of the main shaft conveying pipe 433 is connected to the main shaft intake port 211.

[0052] The outlet end of the first inlet pipe 441 and the outlet end of the second inlet pipe 442 are both connected to the fly cutter conveying pipe 443. The outlet end of the fly cutter conveying pipe 443 is communicated with the fly cutter intake port 311.

[0053] In this embodiment, the intake pressure of the first intake pipe 410 is 0.2 Mpa - 0.3 Mpa, and the intake pressure of the second intake pipe 420 is 0.01 Mpa - 0.08 Mpa. The intake pressures of the two intake pipes are different, which can realize the change from the original single fixed air pressure purge to the reverse purge of two different pressure gas sources from the same intake port. The pressure can be adjusted according to the needs of the mixer, which can prevent materials from entering the main shaft seal structure 210 and the fly cutter seal structure 310 while ensuring accurate measurement. The specific working process is as shown in Figure 3 shown.

[0054] During the initial metering, the requirement for weighing and metering of materials is not so precise. At this time, the first control valve 411, the first main shaft pressure reducing valve 4311, and the first fly cutter pressure reducing valve 4411 are opened, and the second control valve 421, the second main shaft pressure reducing valve 4321, and the second fly cutter pressure reducing valve 4421 are closed. Refer to Figure 3 the solid line part shown in the left figure.

[0055] At this time, the gas flows in from the first intake pipe 410. A part of the gas flows through the first main shaft pressure reducing valve 4311 and into the first access pipe 431, and then flows through the main shaft main pipe 4331 into the first main shaft conveying branch pipe 4332 and the second main shaft conveying branch pipe 4333 respectively, and then reaches the main shaft intake ports 211 at both ends of the main shaft.

[0056] Since the pressure of the gas entering from the first intake pipe 410 is 0.2 - 0.3 MPa, which has a relatively large pressure, a relatively large air flow can be formed at the main shaft intake port 211, so that the powder can be kept away from the main shaft seal structure 210.

[0057] Similarly, another part of the gas flows into the first inlet pipe 441 through the first flying knife pressure reducing valve 4411, and then flows into each flying knife branch pipe through the flying knife conveying pipe 443, forming an air flow at each flying knife air inlet such as 311, so that the material is away from the flying knife sealing structure 310.

[0058] The gas entering through the first inlet pipe 410 has a relatively large pressure, which can form a large air flow at the main shaft sealing structure 210 and the flying knife sealing structure 310, so that the material is away from the sealing device. However, the large air flow will cause inaccurate weighing of the material.

[0059] Therefore, in the final stage of feeding, that is, the fine metering stage, it is necessary to directly switch the route to Route 2, that is Figure 3 the solid line part in the right figure.

[0060] At this time, close the first control valve 411, the first main shaft pressure reducing valve 4311 and the first flying knife pressure reducing valve 4411, and open the second control valve 421, the second main shaft pressure reducing valve 4321 and the second flying knife pressure reducing valve 4421.

[0061] The gas flows in from the second inlet pipe 420, and reaches the main shaft sealing structure 210 on both sides of the main shaft 200 and the flying knife sealing structure 310 on the flying knife 300 respectively through the main shaft pipeline 430 and the flying knife pipeline 440.

[0062] The pressure of the gas entering from the second inlet pipe is very small, only 0.01 - 0.08 MPa. At this time, a micro air flow can be formed at the main shaft air inlet 211 and the flying knife air inlet 311, which can not only ensure that the powder does not approach the sealing device, but also will not affect the fine metering because the air flow is very small.

[0063] This new sealing and back blowing structure changes the original one-way fixed air pressure purge to two-way different pressure gas sources back blowing from the same air inlet. Due to the different pressures of the two gas sources, different pressure gas sources are switched at different stages. While not affecting the fine metering, it can extend the service life of the ploughshare mixer, save the maintenance cost of the equipment, and improve the production efficiency.

[0064] In addition, during the feeding or mixing process, dust-like raw materials floating in the air will be generated in the mixing cylinder 100. To avoid the influence of these raw materials on the sealing device, the ploughshare mixer 10 is also equipped with a dust collection pipeline 500 and a pressure transmitter 110.

[0065] One end of the dust collection pipeline 500 is connected to the mixing cylinder 100, and the other end is provided with a fan, which can extract air outward to create a slightly negative pressure state in the pipeline to extract the dust and fog in the mixing cylinder.

[0066] A regulating valve 510 is provided on the dust collection pipeline. A pressure transmitter 110 is installed on the mixing cylinder 100, and the regulating valve 510 is electrically connected to the pressure transmitter 110. Exemplarily, the connection manner between the regulating valve 510 and the pressure transmitter 110 can be wired connection or wireless connection, and the embodiments of the present application do not make specific limitations on this.

[0067] The pressure transmitter 110 can monitor the pressure inside the mixing cylinder in real time. The regulating valve 510 can adjust the opening degree according to the pressure data detected by the pressure transmitter 110, so as to maintain a slightly negative pressure environment inside the mixing cylinder 100, so that the dust-like raw materials floating above in the mixing cylinder can be sucked away through the dust collection pipeline 500, but it will not affect other materials.

[0068] In addition, a standby valve 520 is also installed on the dust collection pipeline 500. The standby valve 520 is connected in parallel with the regulating valve 510, and switch valves 530 are installed on both sides of the regulating valve 510.

[0069] When working normally, the switch valves 530 on both sides of the regulating valve 510 are both opened. When the regulating valve 510 is damaged or shows an error and cannot work normally, at this time, the switch valves 530 on both sides of the regulating valve 510 can be closed, so as to facilitate the maintenance or replacement of the regulating valve 510, and at the same time switch to the standby valve 520 for operation. The design of the switch valve 530 can make the maintenance process simple and easy to operate. The design of the standby valve 520 can ensure that the machine can still operate normally when the regulating valve 510 fails, improve the production efficiency, and save the production cost.

[0070] A switch valve 120 is connected between the pressure transmitter 110 and the mixing cylinder 100. The switch valve 120 can be a ball valve or other types of valves, and the embodiments of the present application do not make specific limitations on this.

[0071] When working normally, the switch valve 120 is opened, and the air flow inside the mixing cylinder 100 can pass through the pressure transmitter 110 to utilize the pressure transmitter 110 to detect the pressure inside the mixing cylinder 100. When the pressure transmitter 110 needs to be repaired or replaced, the switch valve 120 is closed to isolate the pressure transmitter 110 from the mixing cylinder 100 for convenient maintenance.

[0072] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0073] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although the technical solutions of this application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A plowshare mixer, characterized in that: include: Mixing barrel; A main shaft passes through both axial ends of the mixing barrel, and both ends of the main shaft are provided with a main shaft sealing structure, and the main shaft sealing structure has a main shaft air inlet; At least one flying knife, the flying knife is installed on the mixing barrel, and the flying knife is provided with a flying knife sealing structure, and the flying knife sealing structure has a flying knife air inlet; The gas delivery mechanism includes a first air inlet pipe, a second air inlet pipe, a spindle pipeline and a flying knife pipeline. The air inlet end of the first air inlet pipe and the air inlet end of the second air inlet pipe are both connected to the gas source, the air outlet end of the first air inlet pipe and the air outlet end of the second air inlet pipe are both connected to the air inlet end of the spindle pipeline and the air inlet end of the flying knife pipeline, the air outlet end of the spindle pipeline is connected to the spindle air inlet, and the air outlet end of the flying knife pipeline is connected to the flying knife air inlet.

2. The plowshare mixer according to claim 1, characterized in that The spindle pipeline includes a first access pipe, a second access pipe and a spindle delivery pipe, the air inlet end of the first access pipe is connected to the first air inlet pipe, the air inlet end of the second access pipe is connected to the second air inlet pipe, the air outlet end of the first access pipe and the air outlet end of the second access pipe are both connected to the air inlet end of the spindle delivery pipe, and the air outlet end of the spindle delivery pipe is connected to the spindle air inlet; The flying knife pipeline includes a first inlet pipe, a second inlet pipe and a flying knife delivery pipe. The air inlet end of the first inlet pipe is connected to the first inlet pipe, the air inlet end of the second inlet pipe is connected to the second inlet pipe, the air outlet end of the first inlet pipe and the air outlet end of the second inlet pipe are both connected to the air inlet end of the flying knife delivery pipe, and the air outlet end of the flying knife delivery pipe is connected to the flying knife air inlet.

3. The plowshare mixer according to claim 2, characterized in that The first access pipe is provided with a first main shaft pressure reducing valve, and the second access pipe is provided with a second main shaft pressure reducing valve; The first inlet pipe is provided with a first flying knife pressure reducing valve, and the second inlet pipe is provided with a second flying knife pressure reducing valve.

4. The ploughshare mixer according to any one of claims 1 to 3, characterized in that: The first air intake pipe is provided with a first control valve, and the second air intake pipe is provided with a second control valve.

5. The ploughshare mixer according to any one of claims 1 to 3, characterized in that: The intake pressure of the first intake pipe is 0.2Mpa-0.3Mpa, and the intake pressure of the second intake pipe is 0.01Mpa-0.08Mpa.

6. The ploughshare mixer according to any one of claims 1 to 3, characterized in that: Also includes: The dust collecting pipeline is communicated with the mixing barrel.

7. The plowshare mixer according to claim 6, characterized in that The dust collecting pipeline is provided with a regulating valve, the mixing cylinder is installed with a pressure transmitter, and the pressure transmitter is electrically connected to the regulating valve.

8. The plowshare mixer according to claim 7, characterized in that The dust collecting pipeline is also provided with a spare valve, and the spare valve is connected in parallel with the regulating valve.

9. The plowshare mixer according to claim 7, characterized in that Switch valves are installed on both sides of the regulating valve.

10. The plowshare mixer according to claim 7, characterized in that A switch valve is connected between the pressure transmitter and the mixing cylinder.

11. The plowshare mixer according to claim 2 or 3, characterized in that: The spindle conveying pipe includes a spindle main pipe and two spindle branch pipes; The air inlet end of the main spindle pipe is connected to the first access pipe and the second access pipe respectively, the air inlet ends of the two main spindle branch pipes are connected to the air outlet end of the main spindle pipe, and the air outlet ends of the two main spindle branch pipes are connected to the main spindle air inlets at both ends of the main spindle respectively.

12. The plowshare mixer according to claim 2 or 3, characterized in that The number of the flying cutters is multiple, and the flying cutter delivery pipe includes a flying cutter main pipe and multiple flying cutter branch pipes; The air inlet end of the flying knife main pipe is connected with the first inlet pipe and the second inlet pipe respectively, the air inlet end of each flying knife branch pipe is connected with the air outlet end of the flying knife main pipe, and each flying knife branch pipe is provided with the flying knife air inlet.

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