Feeding device

Abstract

The present application relates to a feeding device, which includes a silo, a connecting pipe and a buffer mechanism, wherein the silo has a feed port and a discharge port located at the bottom of the silo; one end of the connecting pipe is connected to the discharge port, and the other end of the connecting pipe is suitable for being connected to an external reactor; the buffer mechanism is arranged in the connecting pipe, and the buffer mechanism has a buffer cavity, and a first control valve is arranged on the connecting pipe to enable the buffer cavity to selectively connect with the reactor. Thus, the buffer mechanism can buffer powder, and the buffered powder can selectively enter the reactor, so that the powder can enter the reactor in small quantities and multiple times, which can facilitate the discharge of the gas generated by the reaction in the reactor, prevent gas backflow, and prevent the gas from exerting pressure on the connecting pipe, thereby preventing the silo from being lifted. At the same time, the feeding device thus arranged has a simple structure, low cost, and is easy to process and maintain.

Description

Technical Field

[0001] The present application relates to the field of material processing equipment, and in particular to a feeding device. Background Art

[0002] In the prior art, some chemical reactors operate under positive pressure and toxic conditions. The operating pressure is relatively high, reaching more than 50KPa. In addition, during the powder feeding process, the reaction in the reactor is ongoing, and the pressure in the reactor cannot be reduced to normal pressure before feeding. When feeding the reactor through the feeding device, a large amount of toxic gas is generated in the reactor and cannot be discharged in time, which will cause backflow. The gas backflow process will greatly slow down the feeding speed and affect the feeding efficiency. Utility Model Content

[0003] The present application provides a feeding device to solve the problem that gas backflow affects feeding efficiency.

[0004] An embodiment of the present application proposes a feeding device, including a silo, a connecting pipe and a cache mechanism, wherein the silo has a feed port and a discharge port located at the bottom of the silo; one end of the connecting pipe is connected to the discharge port, and the other end of the connecting pipe is suitable for being connected to an external reactor; the cache mechanism is arranged in the connecting pipe, the cache mechanism has a cache cavity, and a first control valve is provided on the connecting pipe to enable the cache cavity to selectively connect with the reactor.

[0005] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0006] The feeding device provided in the embodiment of the present application is provided with a cache mechanism, which can cache powder. The cached powder can selectively enter the reactor, so that the powder can enter the reactor in small quantities and multiple times, so as to reduce the powder that enters the reactor at a single time. When feeding from the silo to the cache chamber, the cache chamber can be disconnected from the reactor, and the cache chamber can be connected to the reactor after the powder in the cache silo reaches the preset position. In this way, a small amount of powder can be concentrated into the reactor, which can facilitate the discharge of the gas generated by the reaction in the reactor, prevent gas backflow, and reduce the pressure generated by the gas, so as to prevent the feeding device from being lifted. At the same time, the feeding device provided in this way has a simple structure, low cost, and is easy to process and maintain, which can reduce the cost of training personnel and improve feeding efficiency.

[0007] In some embodiments, it also includes: an air intake pipe, which is connected to the connecting pipe and is located upstream of the cache mechanism; and a second control valve, which is arranged in the air intake pipe to control the opening and closing of the air intake pipe.

[0008] In some embodiments, a metering module is provided on the silo.

[0009] In some embodiments, the connecting pipe has a hose segment, which is located upstream of the cache mechanism. The feeding device also includes a third control valve, which is arranged in the connecting pipe and located between the hose segment and the cache mechanism to enable the hose segment to selectively connect with the cache cavity.

[0010] In some embodiments, a fourth control valve is further included, and the fourth control valve is arranged upstream of the hose section so that the discharge port is selectively connected to the hose section.

[0011] In some embodiments, it also includes: a spiral feeding mechanism, which is arranged in the connecting pipe and adjacent to the discharge port.

[0012] In some embodiments, it also includes: a feed and exhaust pipe, one end of which is connected to the connecting pipe and is located upstream of the cache mechanism, and the other end of which is connected to the silo; a fifth control valve, which is arranged in the feed and exhaust pipe to control the on and off of the feed and exhaust pipe.

[0013] In some embodiments, it also includes: a dust removal mechanism, which is arranged adjacent to the feed port.

[0014] In some embodiments, the method further includes: at least one tail gas exhaust pipe, wherein the tail gas exhaust pipe is connected to the reactor, and a sixth control valve is provided on the tail gas exhaust pipe to control the on-off of the tail gas exhaust pipe.

[0015] In some embodiments, a material level switch is provided on the cache mechanism, and the material level switch is used to detect the position of the material in the cache cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 A schematic structural diagram of a feeding device and a reactor provided in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 1. Feeding device; 2. Reactor;

[0022] 10. Silo; 11. Feed inlet; 12. Discharge outlet;

[0023] 20. connecting pipe; 21. hose section; 30. buffer mechanism;

[0024] 40. first control valve; 50. air intake pipe; 60. second control valve; 70. metering module;

[0025] 80. third control valve; 90. fourth control valve; 100. screw feeding mechanism;

[0026] 110. Feed and exhaust pipe; 120. Fifth control valve;

[0027] 130. dust removal mechanism; 140. tail gas exhaust pipe; 150. sixth control valve; 160. material level switch. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0030] For ease of description, spatial relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figure, such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside". Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a change in posture or a change in motion state, then these directional indications will also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both the above and below orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0031] In the description of the present application, “plurality” means two or more.

[0032] In order to solve the technical problem in the prior art that the backflow of high-pressure gas generated after the reaction in the reactor affects the feeding efficiency, the present application provides a feeding device 1, which can prevent the backflow of gas and improve the feeding efficiency.

[0033] like Figure 1 As shown, the feeding device 1 of the embodiment of the present application includes a silo 10, a connecting pipe 20, and a buffer mechanism 30. The feeding device 1 can be a positive pressure feeding device, wherein the material used for feeding can be a powder.

[0034] Specifically, if Figure 1 As shown, the silo 10 has a feed port 11 and a discharge port 12 located at the bottom of the silo 10, the reactor 2 is arranged below the silo 10, one end of the connecting pipe 20 is connected to the discharge port 12, and the other end of the connecting pipe 20 is suitable for connecting to the external reactor 2, and the reactor 2 can be arranged below the silo 10. The buffer mechanism 30 is arranged on the connecting pipe 20, and the buffer mechanism 30 has a buffer cavity. The connecting pipe 20 is provided with a first control valve 40 to selectively connect the buffer cavity with the reactor 2.

[0035] For example, the buffer mechanism 30 may be a hopper, and the feed port 11 may be located on the side wall of the silo 10. The powder may enter the silo 10 through the feed port 11, and enter the connecting pipe 20 through the discharge port 12 and then enter the buffer mechanism 30. The buffer cavity of the buffer mechanism 30 may be used to buffer the powder. When the first control valve 40 is opened, the buffer cavity is connected to the reactor 2, so that the powder buffered in the buffer cavity can enter the reactor 2. When the first control valve 40 is closed, the buffer cavity is disconnected from the reactor 2, and the powder buffered in the buffer cavity cannot enter the reactor 2.

[0036] Thus, by setting up the buffer mechanism 30, the buffer mechanism 30 can buffer the powder, and the buffered powder can selectively enter the reactor 2, so that the powder can enter the reactor 2 in small quantities and multiple times, so as to reduce the powder entering the reactor 2 at a single time. When feeding from the silo 10 to the buffer chamber, the buffer chamber can be disconnected from the reactor 2, and the buffer chamber can be connected to the reactor 2 after the powder in the buffer bin reaches the preset position. In this way, a small amount of powder can be concentrated into the reactor 2, which can facilitate the discharge of the gas generated by the reaction in the reactor 2, prevent gas backflow, and prevent the gas from generating pressure on the connecting pipe 20, so as to prevent the situation of lifting the silo 10. At the same time, the feeding device 1 set in this way has a simple structure, low cost, easy processing and maintenance, can reduce the cost of training personnel and improve feeding efficiency.

[0037] In some embodiments, Figure 1 As shown, the feeding device 1 further includes an air intake pipe 50 and a second control valve 60, wherein the air intake pipe 50 is connected to the connecting pipe 20 and is located upstream of the buffer mechanism 30; the second control valve 60 is provided in the air intake pipe 50 to control the on-off of the air intake pipe 50. The air intake pipe 50 can introduce gas into the buffer chamber, for example, the gas can be nitrogen.

[0038] After feeding into the buffer chamber, the pressure in the buffer chamber is low and the pressure in the reactor 2 is high. By setting the air inlet pipe 50 and the second control valve 60, gas can be introduced into the buffer chamber to increase the pressure in the buffer chamber, thereby improving the feeding efficiency.

[0039] In addition, after feeding into the reactor 2 through the buffer chamber and completing the reaction in the reactor 2, the air inlet pipe 50 can also be opened to allow gas to enter the reactor 2 through the air inlet pipe 50 and the buffer chamber, which is convenient for gas replacement, conducive to the discharge of toxic gases, and improves feeding efficiency.

[0040] In some embodiments, a metering module 70 is provided on the silo 10. That is, the silo 10 can be a metering silo. By providing the metering module 70, the metering module 70 can have a preset feeding amount, and feed the preset feeding amount to the buffer chamber for caching in multiple times and then enter the reactor 2 until the sum of multiple feedings reaches the feeding amount, and the feeding is completed. At the same time, by providing a buffer device, it is possible to prevent gas backflow and generate pressure on the flexible connection of the connecting pipe 20, thereby preventing the situation of lifting the metering silo, thereby ensuring the metering accuracy of the metering module 70 and improving the feeding effect.

[0041] In some embodiments, Figure 1 As shown, the connecting pipe 20 has a hose section 21, which is located upstream of the cache mechanism 30. The feeding device 1 also includes a third control valve 80, which is arranged in the connecting pipe 20 and located between the hose section 21 and the cache mechanism 30 to enable the hose section 21 to selectively connect with the cache chamber.

[0042] The powder is generally measured by a metering module 70 such as a weighing module installed on the silo 10 for accurate measurement, so a flexible connection is required to improve the measurement accuracy without affecting the measurement accuracy due to the change in weight of the silo 10. Therefore, the measurement accuracy can be improved by providing a hose section 21. For example, the hose section 21 can be a rubber piece.

[0043] The backflow of high-pressure gas will generate pressure on the hose section 21, causing the silo 10 to be lifted, affecting the metering accuracy. If the pressure of the reactor is higher than the damage pressure of the soft connection, it will bring safety risks. By setting up a buffer mechanism 30, the buffer mechanism 30 can prevent the gas from flowing back to prevent the gas from generating pressure on the hose section 21. On the one hand, it can prevent the gas from lifting the silo 10 to ensure the metering accuracy; on the other hand, it can prevent the hose section 21 from being damaged, thereby improving the safety performance of the feeding device 1. By setting up a third control valve 80, the reacted gas can be further prevented from flowing back to the hose section 21, so as to protect the hose section 21 and increase the service life of the feeding device 1. It can also further prevent the gas from flowing back to the silo 10, thereby improving the feeding efficiency.

[0044] In some embodiments, Figure 1 As shown, the feeding device 1 may further include a fourth control valve 90, which is disposed upstream of the hose section 21 to selectively connect the discharge port 12 to the hose section 21. By providing the fourth control valve 90, the powder can be prevented from moving downward to ensure the accuracy of the metering module 70 during metering.

[0045] In some embodiments, Figure 1As shown, the feeding device 1 also includes: a spiral feeding mechanism 100, which is arranged in the connecting pipe 20 and adjacent to the discharge port 12, so that the powder can be evenly distributed through the spiral feeding mechanism 100 before entering the buffer chamber to ensure the feeding speed.

[0046] In some embodiments, Figure 1 As shown, the feeding device 1 may also include a feed exhaust pipe 110 and a fifth control valve 120, one end of the feed exhaust pipe 110 is connected to the connecting pipe 20 and is located upstream of the buffer mechanism 30, and the other end of the feed exhaust pipe 110 is connected to the silo 10; the feeding device 1 also includes: a fifth control valve 120 is arranged on the feed exhaust pipe 110 to control the on and off of the feed exhaust pipe 110.

[0047] When feeding from the silo 10 to the buffer chamber, the fifth control valve 120 can be opened. As a result, the air pressure between the feed exhaust pipe 110, the silo 10, the buffer chamber and the connecting pipe 20 is balanced, and the pressure of the buffer chamber is discharged from the feed exhaust pipe 110 to facilitate feeding. At the same time, it can also prevent the high-pressure gas from flowing back to the hose section 21, improve the safety performance, and improve the metering accuracy of the metering module 70.

[0048] In some embodiments, Figure 1 As shown, the feeding device 1 further includes: a dust removal mechanism 130, which is arranged adjacent to the feed port 11. For example, there may be multiple dust removal mechanisms 130, and the dust removal mechanism 130 may be connected to the feed exhaust pipe 110 to remove dust from the gas entering the silo 10 from the feed exhaust pipe 110. The dust removal mechanism 130 may also be arranged at the feed port 11 to remove dust from the powder before the powder enters the silo 10 to prevent contamination.

[0049] In some embodiments, Figure 1 As shown, the feeding device 1 also includes: at least one tail gas exhaust pipe 140, the tail gas exhaust pipe 140 is connected to the reactor 2, and a sixth control valve 150 is provided on the tail gas exhaust pipe 140 to control the on and off of the tail gas exhaust pipe 140. For example, there can be multiple tail gas exhaust pipes 140 to improve the efficiency of exhaust gas discharge. By setting the tail gas exhaust pipe 140, the gas generated after the reaction of the reactor 2 can be uniformly discharged through the tail gas exhaust pipe 140. In this way, on the one hand, it is convenient to prevent the toxic gas generated by the reactor 2 from flowing to other locations to cause harm; on the other hand, it can prevent the gas from flowing back to the silo 10, so as to increase the feeding speed, improve the metering accuracy, prevent the damage of the hose section 21, and prevent the occurrence of safety accidents.

[0050] In some embodiments, Figure 1As shown, a material level switch 160 is provided on the buffer mechanism 30, and the material level switch 160 is used to detect the position of the material in the buffer cavity. By setting the material level switch 160, the amount of material in the buffer cavity can be monitored to control the amount of material entering the reactor 2 to participate in the reaction, prevent excessive gas from being generated in a single reaction, resulting in backflow or lifting, and ensure feeding efficiency and effect.

[0051] Combine the following Figure 1 Describe the feeding process of the feeding device 1 of the embodiment of the present application:

[0052] like Figure 1 As shown, the feeding device 1 starts feeding, first sets the feeding amount of the metering module 70, then opens the fourth control valve 90, the third control valve 80, and the fifth control valve 120, and then runs the screw feeding mechanism 100 to feed into the buffer chamber. When the material level switch 160 shows a high material level, the fourth control valve 90, the screw feeding mechanism 100, the third control valve 80, and the fifth control valve 120 are closed in sequence, and then the second control valve 60 is opened to pressurize for 1 second and then closed, and then the first control valve 40 is opened to feed the reactor 2. After the feeding is completed, the sixth control valve 150 and the second control valve 60 are opened in sequence to discharge the toxic gas in the buffer chamber and replace it with the external tail gas absorption system connected to the tail gas exhaust pipe 140, and then the sixth control valve 150 and the second control valve 60 are closed in sequence, that is, a working cycle is completed. Then the above steps can be repeated until the feeding amount preset by the metering module 70 is reached, the feeding is completed, and the feeding device 1 stops running.

[0053] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0055] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0056] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A feeding device, characterized in that: include: A silo (10), the silo (10) having a feed inlet (11) and a discharge outlet (12) located at the bottom of the silo (10); A connecting pipe (20), one end of which is connected to the discharge port (12), and the other end of which is suitable for connecting to an external reaction kettle (2); A cache mechanism (30), the cache mechanism (30) being arranged on the connecting pipe (20), the cache mechanism (30) having a cache cavity, and the connecting pipe (20) being provided with a first control valve (40) to enable the cache cavity to selectively communicate with the reactor (2).

2. The feeding device according to claim 1, characterized in that: Also includes: An air intake pipe (50), the air intake pipe (50) being connected to the communication pipe (20) and being located upstream of the buffer mechanism (30); A second control valve (60), wherein the second control valve (60) is arranged in the air intake pipeline (50) to control the opening and closing of the air intake pipeline (50).

3. The feeding device according to claim 1, characterized in that: The silo (10) is provided with a metering module (70).

4. The feeding device according to claim 1, characterized in that: The communication pipe (20) has a hose section (21), and the hose section (21) is located upstream of the buffer mechanism (30); The feeding device further comprises a third control valve (80), which is arranged in the communication pipe (20) and located between the hose section (21) and the buffer mechanism (30) so as to enable the hose section (21) to selectively communicate with the buffer chamber.

5. The feeding device according to claim 4, characterized in that: It also comprises a fourth control valve (90), which is arranged upstream of the hose section (21) so as to enable the discharge port (12) to selectively communicate with the hose section (21).

6. The feeding device according to claim 1, characterized in that: Also includes: A screw feeding mechanism (100), wherein the screw feeding mechanism (100) is arranged in the connecting pipe (20) and is disposed adjacent to the discharge port (12).

7. The feeding device according to claim 1, characterized in that: Also includes: a feed and exhaust pipe (110), one end of the feed and exhaust pipe (110) being connected to the communication pipe (20) and being located upstream of the buffer mechanism (30), and the other end of the feed and exhaust pipe (110) being connected to the silo (10); A fifth control valve (120), wherein the fifth control valve (120) is arranged in the feed and exhaust pipeline (110) to control the on-off of the feed and exhaust pipeline (110).

8. The feeding device according to claim 1, characterized in that: Also includes: A dust removal mechanism (130), wherein the dust removal mechanism (130) is arranged adjacent to the feed port (11).

9. The feeding device according to claim 1, characterized in that: Also includes: At least one tail gas exhaust pipeline (140), the tail gas exhaust pipeline (140) being connected to the reactor (2), and the tail gas exhaust pipeline (140) being provided with a sixth control valve (150) for controlling the on-off of the tail gas exhaust pipeline (140).

10. The feeding device according to any one of claims 1 to 9, characterized in that: The cache mechanism (30) is provided with a material level switch (160), and the material level switch (160) is used to detect the position of the material in the cache cavity.

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