Large-particle material conveying device

Abstract

The invention discloses a large-particle material conveying device which can effectively control the feeding amount of materials and avoid material blockage caused by accumulation in the ascending stage. Materials are accumulated on the horizontal section of the conveying pipe in front of the pressure release valve under the action of gravity, and the blanking ports of the large and small bins are designed to be larger, so that bridging and material blocking are avoided; multi-stage pressure relief can be achieved through the double-layer stock bin, the pressure of materials at the bottom is reduced, and the materials are more easily pumped away by vacuum funnel equipment. The rubber sleeve is designed, so that the material quantity of the lower-layer bin is controllable, and the problems of overhigh material accumulation and insufficient vacuum suction are avoided; pressure relief and recovery of vacuum pressure are achieved by controlling opening and closing of an opening in the valve body, the risk that materials are possibly extruded by a traditional baffle is avoided, the feeding capacity of the vacuum funnel is matched with the material suction amount, and efficient automatic feeding low in cost and compact in structure is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of explosive conveying, in particular to a large-particle material conveying device. BACKGROUND

[0002] In the production of explosives and the assembly process of shells, the conveying of explosives is involved. The large-particle material conveying methods in the field of explosives mainly include elevator conveying and belt conveying. Such conveying methods have complex mechanisms, high costs, and low conveying efficiency. The use of a vacuum feeding machine can greatly improve the conveying efficiency and has a simple structure and low cost.

[0003] However, the existing vacuum conveying of large-particle materials is mainly manual suction of the material from above the material by a suction nozzle. The operator directly contacts the explosives, which endangers the health and safety of the operator. At the same time, due to the poor flowability, size, and large specific gravity of the large-particle explosives, when automatically sucking the material from above the material, the suction nozzle is pressed on the surface of the material, which easily causes bridging at the mouth of the suction nozzle and leads to blockage.

[0004] Another way is to extract and convey at the bottom of the storage tank, so that the material enters the suction nozzle under its own gravity. However, due to the size and large specific gravity of the material, the running speed of the material is reduced during the conveying and lifting stage, and the subsequent material continues to be sucked in, which causes accumulation at the pipe lifting position and eventually leads to blockage.

[0005] In addition, the amount of material entering the conveying pipe can be controlled by opening and closing the plate to avoid the blockage problem caused by continuous material entering during the lifting stage. However, the use of an opening and closing plate in the field of explosives can cause dangerous extrusion of the material. Therefore, the traditional vacuum feeding form cannot realize the automatic feeding of large-particle materials. SUMMARY

[0006] In view of the above problems, the present application provides a large-particle material conveying device for overcoming the above problems or at least partially solving the above problems. The problem of the need for manual participation in the vacuum conveying of large-particle materials and the direct contact of the operator with the explosives, which endangers the health and safety of the operator, is solved. At the same time, the problem of the existing technology having certain safety hazards for the conveying of large-particle materials and being prone to extrusion and blockage of the material, which cannot realize automation, is solved. In addition, the problem of the traditional single-stage funnel form causing the vacuum pipe to be unable to suck in air when the material is accumulated too high, resulting in a decrease in suction force and the stopping of material conveying is solved.

[0007] The present application provides the following solutions:

[0008] A large-particle material conveying device, comprising:

[0009] The feeding mechanism is connected with the vacuum funnel through the first conveying hose, the vacuum funnel is installed above the storage bin;

[0010] The feeding mechanism comprises a large bin, a rack, a cover plate, a small bin, a second conveying hose and a pressure relief valve, the large bin, the small bin and the pressure relief valve are all installed on the rack, the cover plate is installed at the inlet of the small bin, the outlet of the small bin is connected with the pressure relief valve through the second conveying hose, and the outlet of the pressure relief valve is connected with the vacuum funnel through the first conveying hose;

[0011] The cover plate is provided with a plurality of air holes, the diameter of the air holes is smaller than the diameter of the large granular material, and the plurality of air holes are used to form an air inlet channel when the vacuum pipe is used to draw material; the pressure relief valve comprises a cylinder, a valve and a valve body, the valve body is provided with an opening, the valve is in a free state and is sleeved outside the valve body, and the cylinder is used to drive the valve to move back and forth on the valve body so as to close or open the opening;

[0012] When the opening is in a closed state, the material in the small bin is sucked into the second conveying hose, the valve body and the first conveying hose under the action of the suction force of the vacuum funnel;

[0013] When the opening is in an open state, the suction force in the valve body and the second conveying hose disappears, so that only the material in the first conveying hose is sucked into the storage bin.

[0014] Preferably, the large bin comprises an upper straight cylinder section and a lower inclined funnel section.

[0015] Preferably, the top of the upper straight cylinder section is provided with a wide-mouth structure.

[0016] Preferably, the cylinder comprises two cylinders, the two cylinders are respectively located on the two sides of the valve body and are connected with the valve.

[0017] Preferably, the second conveying hose forms a horizontal section between the small bin and the pressure relief valve.

[0018] Preferably, the feeding mechanism further comprises a rubber sleeve, and the outlet of the lower end of the large bin is connected with the small bin through the rubber sleeve.

[0019] Preferably, the height of the rubber sleeve is adjustable, so as to control the stacking height of the material in the small bin by adjusting the height of the rubber sleeve.

[0020] According to the specific embodiments of the present application, the following technical effects are provided:

[0021] The granular material conveying device provided by the embodiment of the application can effectively control the feeding amount of the material, avoid material accumulation and blockage in the rising stage, and the discharge port of the large and small material bins is designed to be large to avoid bridging and blockage. The double-layer material bin can realize multi-stage pressure relief, reduce the pressure of the material at the bottom, and make the material more easily sucked away by the vacuum hopper device. The lower material bin has a controllable material amount due to the design of the rubber sleeve, which avoids the problem of insufficient vacuum suction caused by excessive material accumulation. The opening of the valve body is closed to realize pressure relief and recovery of the vacuum pressure, which avoids the extrusion risk of the material caused by the traditional baffle. The vacuum hopper feeding capacity and the suction amount are matched, and low-cost, compact and efficient automatic feeding is realized.

[0022] Of course, implementing any product of the application does not necessarily require all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a structural schematic diagram of a granular material conveying device provided by the embodiment of the application;

[0025] Figure 2 is a structural schematic diagram of a feeding mechanism provided by the embodiment of the application;

[0026] Figure 3 is a structural schematic diagram of a pressure relief valve provided by the embodiment of the application.

[0027] In the drawings: feeding mechanism 1, large material bin 11, rack 12, cover plate 13, small material bin 14, second conveying hose 15, pressure relief valve 16, air cylinder 161, valve 162, valve body 163, opening 164, rubber sleeve 17, vacuum hopper 2, first conveying hose 3, storage bin 4. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the application.

[0029] Referring to Figure 1 , Figure 2 ,Figure 3 A large-particle material conveying device is provided for an embodiment of the present application, as shown in Figure 1 、 Figure 2 、 Figure 3 The device can include:

[0030] The feeding mechanism 1, the vacuum funnel 2, the first conveying hose 3, and the storage bin 4; the feeding mechanism 1 is connected to the vacuum funnel 2 through the first conveying hose 3, and the vacuum funnel 2 is installed above the storage bin 4;

[0031] The feeding mechanism 1 includes a large bin 11, a rack 12, a cover plate 13, a small bin 14, a second conveying hose 15, and a pressure relief valve 16; the large bin 11, the small bin 14, and the pressure relief valve 16 are all installed on the rack 12, the cover plate 13 is installed at the inlet of the small bin 14, the outlet of the small bin 14 is connected to the pressure relief valve 16 through the second conveying hose 15, and the outlet of the pressure relief valve 16 is connected to the vacuum funnel through the first conveying hose 3;

[0032] The cover plate 13 is provided with a plurality of air holes, the diameter of the air holes is smaller than the diameter of the large-particle material, and the plurality of air holes are used to form an air inlet channel when the vacuum tube is pumping; the pressure relief valve 16 includes a cylinder 161, a valve 162, and a valve body 163, the valve body 163 is provided with an opening 164, the valve 162 is in a free state and is sleeved outside the valve body 163, and the cylinder 161 is used to drive the valve 162 to move back and forth on the valve body 163 to close or open the opening 164;

[0033] When the opening 164 is closed, the material in the small bin 14 is sucked into the second conveying hose 15, the valve body 163, and the first conveying hose 3 under the suction force of the vacuum funnel 2;

[0034] When the opening 164 is open, the suction force in the valve body 163 and the second conveying hose 15 disappears, so that only the material in the first conveying hose 3 is sucked into the storage bin 4.

[0035] In the field of explosive conveying, due to the characteristics of the material itself, it cannot be excessively squeezed, and in addition, the specific gravity of the large-particle material is large, the flowability is poor, and it is easy to "bridge", so it is difficult to realize automatic feeding. The existing vacuum feeding for large particles is mainly in the form of manual holding, and the operator directly contacts the medicine, which affects the health of the personnel and increases the safety risk.

[0036] The granular material conveying device provided by the embodiment of the application can effectively control the feeding amount of the material, avoid the material accumulation and blockage in the rising stage, and the feeding port of the large and small material bins 14 is designed to be large to avoid the bridging and blockage; the multi-stage pressure relief can be realized through the double-layer material bin, the pressure of the material at the bottom is reduced, and the material is more easily sucked away by the vacuum hopper device; the lower material bin material amount is controlled by the design of the rubber sleeve 17 to avoid the problem of material accumulation being too high and insufficient vacuum suction; the pressure relief and recovery of the vacuum pressure are realized by controlling the closure of the upper opening 164 of the valve body 163, the risk of material extrusion caused by the traditional baffle is avoided, the feeding capacity of the vacuum hopper 2 is matched with the material suction amount, and low-cost, compact and efficient automatic feeding is realized.

[0037] In order to further improve the pressure relief effect, the embodiment of the application can provide that the large material bin 11 comprises an upper straight cylinder section and a lower inclined funnel section.

[0038] In order to facilitate the addition of the material, the embodiment of the application can also provide that the top of the upper straight cylinder section is provided with a wide-mouth structure.

[0039] In order to ensure the stable operation of the valve 162 in the opening and closing process, the embodiment of the application can provide that the air cylinder 161 comprises two, and the two air cylinders 161 are located on the two sides of the valve body 163 and are connected with the valve 162.

[0040] In order to control the amount of material entering the small material bin 14, the embodiment of the application can also provide that the second conveying hose 15 forms a horizontal section between the small material bin 14 and the pressure relief valve 16.

[0041] In order to better connect the large material bin 11 and the small material bin 14, the embodiment of the application can also provide that the feeding mechanism 1 further comprises a rubber sleeve 17, and the lower end discharge port of the large material bin 11 is connected with the small material bin 14 through the rubber sleeve 17.

[0042] In order to realize the adjustment of the amount of material entering the small material bin 14, the embodiment of the application can also provide that the height of the rubber sleeve 17 is adjustable, so as to control the accumulation height of the material in the small material bin 14 by adjusting the height of the rubber sleeve 17.

[0043] The structure and use method of the granular material conveying device provided by the embodiment of the application will be described in detail below.

[0044] The granular material conveying device provided by the embodiment of the application controls the amount of material entering the conveying pipe by the pressure relief valve 16, avoids the blockage problem in the material lifting stage, and does not extrude the material during the material transfer process.

[0045] The granular material conveying device provided by the embodiment of the application mainly comprises a large-particle automatic feeding mechanism 1, a vacuum hopper 2, a first conveying hose 3, a storage bin 4 and the like. The large-particle automatic feeding mechanism 1 is connected with the vacuum hopper 2 through the first conveying hose 3, and the vacuum hopper 2 is installed above the storage bin 4.

[0046] The large-particle automatic feeding mechanism 1 comprises a large-material bin 11, a rack 12, a rubber sleeve 17, a cover plate 13, a small-material bin 14, a second conveying hose 15, a pressure relief valve 16 and the like. The large-material bin 11 and the small-material bin 14 are installed on the rack 12, the lower end of the large-material bin 11 is connected with the small-material bin 14 through the rubber sleeve 17, the cover plate 13 is installed at the material inlet of the small-material bin 14, and the material outlet of the small-material bin 14 is connected with the pressure relief valve 16 through the second conveying hose 15. The pressure relief valve 16 is installed on the rack 12, and the outlet is connected with the vacuum hopper through the first conveying hose 3.

[0047] The pressure relief valve 16 comprises a cylinder 161, a valve 162 and a valve body 163. The cylinder 161 is connected with the valve 162 and is installed on the rack 12, and the valve body 163 is provided with an opening 164, and the valve 162 is sleeved on the valve body 163. The valve 162 can slide on the valve body 163 under the action of the cylinder 161, so as to control the opening and closing of the opening 164 on the valve body 163.

[0048] Figure 1 The whole large-particle vacuum automatic conveying device is shown in the figure. The incoming material can be poured into the large-material bin 11 of the large-particle automatic feeding mechanism 1 from an iron box through a robot or a turnover trolley, the vacuum hopper works to generate negative pressure, cooperates with the action of the pressure relief valve 16, the material passes through the conveying hose to the vacuum hopper and then falls into the storage bin 4, and the feeding is completed.

[0049] Figure 2 The large-particle vacuum automatic feeding mechanism 1 is shown in the figure. The large-material bin 11 adopts an upper straight and lower inclined mode and has a certain pressure relief effect. The material falls into the small-material bin 14 after passing through the large-material bin 11 and is finally accumulated to stop at the horizontal part of the second conveying hose 15. The rubber sleeve 17 is connected with the lower end of the large-material bin 11, and the height of the rubber sleeve 17 can be adjusted to control the height of the material accumulated in the small-material bin 14, and the amount of material in the small-material bin 14 is controllable. The cover plate 13 is installed at the upper end of the small-material bin 14, the cover plate 13 is provided with air holes, the material cannot be spilled out, and enough air is provided when the vacuum pipe draws the material, so that the material can be normally conveyed, and the small-material bin 14 also has a certain pressure relief effect.

[0050] Figure 3 The structure of the pressure relief valve 16 is shown in the figure. The cylinder 161 can drive the valve 162 to control the opening and closing of the opening 164 on the valve body 163, so as to realize the pressure relief and recovery of the vacuum suction force in the second conveying hose 15.

[0051] The working principle of the pressure relief valve 16 is that the opening 164 of the valve body 163 is opened and closed by controlling the action of the cylinder 161. When the opening 164 is opened, the vacuum suction force is discharged from the opening 164. At this time, the material in the second conveying hose 15 cannot be sucked away due to insufficient suction force, and the material that has passed through the pressure relief valve 16 is still affected by the vacuum suction force and continues to move to the vacuum hopper 2. When the opening 164 of the valve body 163 is closed, the vacuum suction force at the hopper is restored, and the material in the small bin 14 continues to be discharged under the action of gravity. The use of the pressure relief valve 16 realizes controllable vacuum feeding, avoiding the problem of blockage during the material rising stage due to too much feeding at one time.

[0052] The overall principle and process are as follows:

[0053] The artificial operation turns the cart over to lift the material bucket and pour the material into the large bin 11. At the beginning, the opening 164 of the valve body 163 is in a closed state. The personnel click the start button and leave. When the material passing through the pressure relief valve 16 reaches a certain amount, the cylinder 161 acts, the opening 164 is opened, the vacuum suction force is discharged, the material that has passed through the pressure relief valve 16 continues to complete the feeding, and the material below the small bin 14 stops moving. Until the feeding of the material that has passed through is completed, the opening 164 is closed, and the vacuum suction force of the material below the hopper is restored, and the material is sucked away again. The opening 164 is opened for a certain period of time and then closed. The feeding capacity is consistent with the suction amount. The opening and closing action is repeated until the material in the hopper is completely sucked away.

[0054] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0055] Those skilled in the art can clearly understand the application by the description of the above embodiments. The technical solutions of the application can be implemented by means of software plus necessary universal hardware platforms. Based on such an understanding, the technical solutions of the application can be embodied in the form of a software product. The computer software product can be stored in a storage medium, such as a ROM / RAM, a magnetic disk, or an optical disk, and includes a plurality of instructions to cause a computer device (such as a personal computer, a server, or a network device) to execute the methods described in various embodiments or some parts of the embodiments.

[0056] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment mainly describes the difference from other embodiments. In particular, the system or system embodiments are described more simply because they are basically similar to the method embodiments. The relevant parts can be referred to the part of the method embodiments. The above-described system and system embodiments are merely illustrative, and the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, that is, they can be located in one place or distributed on multiple network units. According to actual needs, some or all of the modules can be selected to achieve the purpose of the embodiment. Those skilled in the art can understand and implement without creative labor.

[0057] The above only describes the preferred embodiments of the application and is not used to limit the protection scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application is included in the protection scope of the application.

Claims

1. A large particle material conveying device, characterized in that: It includes a feeding mechanism, a vacuum funnel, a first conveying hose and a storage bin; the feeding mechanism is connected to the vacuum funnel through the first conveying hose, and the vacuum funnel is installed above the storage bin; The feeding mechanism includes a large silo, a frame, a cover plate, a small silo, a second conveying hose, and a pressure relief valve; the large silo, the small silo, and the pressure relief valve are all mounted on the frame, the cover plate is mounted at the inlet of the small silo, the outlet of the small silo is connected to the pressure relief valve via the second conveying hose, and the outlet of the pressure relief valve is connected to the vacuum funnel via the first conveying hose; The cover plate is provided with a plurality of air holes, the aperture of which is smaller than the diameter of the large particle material, and the plurality of air holes are used to form an air inlet channel when the vacuum tube is pumping the material; the pressure relief valve comprises a cylinder, a valve and a valve body, the valve body is provided with an opening, the valve is freely mounted on the outside of the valve body, and the cylinder is used to drive the valve to move back and forth on the valve body to close or open the opening; When the opening is closed, the material in the small silo is sucked into the second conveying hose, the valve body and the first conveying hose under the suction of the vacuum funnel; When the opening is in the open state, the suction force in the valve body and the second conveying hose disappears, so that only the material in the first conveying hose is sucked into the storage bin.

2. The large particle material conveying device according to claim 1, characterized in that: The large silo includes an upper straight cylinder section and a lower inclined funnel section.

3. The large particle material conveying device according to claim 2, characterized in that: The top of the upper straight tube section is provided with a wide-mouth structure.

4. The large particle material conveying device according to claim 1, characterized in that: The two cylinders are respectively located on both sides of the valve body and are connected to the valve.

5. The large particle material conveying device according to claim 1, characterized in that: The second conveying hose is located between the small silo and the pressure relief valve to form a horizontal section.

6. The large particle material conveying device according to claim 1, characterized in that: The feeding mechanism further comprises a rubber sleeve, and the lower end discharge port of the large silo is connected to the small silo through the rubber sleeve.

7. The large particle material conveying device according to claim 6, characterized in that: The height of the rubber sleeve is adjustable, so that the stacking height of the material in the small silo can be controlled by adjusting the height of the rubber sleeve.

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