A material feeding mechanism

Abstract

The present disclosure relates to the technical field of anti-explosion furnace feed switch control mechanism, and an embodiment of the present disclosure provides a material feeding mechanism, which comprises a feed pipeline and a plurality of outer frames, the outer frames are fixed outside the feed pipeline, through cavities are arranged in the outer frames and the feed pipeline, a cooling assembly is arranged in the feed pipeline, a sealing assembly comprises a pair of inner ring grooves, the inner ring grooves are arranged on opposite surfaces in the through cavities, sealing gaskets are arranged in the inner ring grooves, one end of the outer frame is provided with a hydraulic cylinder, a gate is arranged at the output end of the hydraulic cylinder, and the gate is slidably attached in the through cavity. Through the above technical scheme, the technical problem that the existing anti-explosion furnace feed switch generally adopts a single-layer sealing structure, has the significant disadvantages of insufficient sealing strength and decreased sealing performance after multiple opening and closing, and is difficult to meet the high safety requirements of propellant production is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of explosion-proof furnace feed switch control mechanisms, specifically, to a material feeding mechanism. Background Technology

[0002] In the field of material handling for propellant explosion-proof furnaces, the sealing performance and structural reliability of the feed switch are directly related to production safety and material conveying efficiency. However, existing explosion-proof furnace feed switches generally adopt a single-layer closed structure, which has significant drawbacks such as insufficient sealing strength and decreased sealing performance after multiple switching, making it difficult to meet the high safety requirements of propellant production.

[0003] The structural defects of traditional feed switches are as follows: First, the single-layer sealing structure is rudimentary, often using a single metal or rubber plate as the sealing element, and achieving a seal solely through bolt tightening. This cannot withstand the high-pressure environment inside the explosion-proof furnace. When the propellant material undergoes a high-temperature reaction inside the furnace, pressure fluctuations will continuously impact the single-layer sealing structure, causing deformation of the sealing surface and seriously threatening production safety. Second, the switching mechanism lacks wear-resistant and impact-resistant design. During a single switching process, the sealing element experiences hard friction with the feed inlet edge. After repeated use, scratches or wear grooves will appear on the sealing surface. This is especially problematic when conveying propellants containing solid particles, as particle jamming exacerbates damage to the sealing surface. Traditional structures lack a wear compensation mechanism; when the sealing surface wears beyond a certain level, the entire sealing assembly must be replaced, resulting in excessive costs. Third, the single-layer structure exhibits significant heat conduction. The high temperature inside the explosion-proof furnace is rapidly transferred to the external operating mechanism through the single-layer sealing structure, causing the switch handle to overheat and deform. This prevents operators from properly opening and closing the switch, and the high-temperature conduction may cause malfunctions in external electrical components, increasing safety hazards.

[0004] As propellant production evolves towards higher safety and longer continuous operation, the demand for "high-strength sealing, wear resistance, and heat conduction resistance" in feed switches is becoming increasingly urgent. Traditional single-layer enclosed structures, due to defects such as "outdated sealing design, insufficient wear resistance, and lack of thermal protection," can no longer meet the safe operation requirements of explosion-proof furnaces. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a material feeding mechanism, which solves the technical problem that the existing explosion-proof furnace feeding switches generally adopt a single-layer closed structure, which has the significant drawbacks of insufficient sealing strength and decreased sealing performance after multiple switching, making it difficult to meet the high safety requirements of propellant production.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a material feeding mechanism, comprising:

[0007] The feed pipe and several external frames are fixed to the outside of the feed pipe;

[0008] Several through-cavities and a sealing assembly, wherein the through-cavities are all opened within the outer frame and the feed pipe;

[0009] A cooling component is disposed in the feed pipe;

[0010] The sealing assembly includes a pair of inner annular grooves, which are formed on opposite surfaces within the cavity. A sealing gasket is provided within the inner annular groove. A hydraulic cylinder is installed at one end of the outer frame, and a gate is provided at the output end of the hydraulic cylinder. The gate slides and fits within the cavity.

[0011] As a further technical solution, an air cavity is provided inside the gate, and annular grooves are provided on both surfaces of the gate. Several through holes are provided in the annular grooves, and an airbag is installed in the annular grooves. The airbag is filled and fitted into the inner annular groove.

[0012] As a further technical solution, the surface of the airbag cushion is provided with a number of plugs, the plugs are inserted into the through holes, and the gate is equipped with a connecting nozzle, which is connected to the air cavity.

[0013] As a further technical solution, the cooling component includes several protrusions, all of which are disposed on the inner wall of the feed pipe. A circulation cavity is formed between the protrusions and the feed pipe. Both ends of the outer wall of the feed pipe are connected to flow pipes, and the flow pipes are connected to the inside of the circulation cavity.

[0014] As a further technical solution, the air chamber is distributed in a ring around the inside of the feed pipe.

[0015] As a further technical solution, the surface of the convex layer is a sloping structural surface with an arc transition around its perimeter.

[0016] As a further technical solution, the inner wall of the passage cavity is a concave structure surface all around, and the gate is embedded in the concave part of the passage cavity.

[0017] As a further technical solution, the outer frame surface is provided with notches, and the connecting nozzle is embedded in the notches.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] 1. In this disclosure, the sealing component drives the gate to slide through a hydraulic cylinder, and the concave structure inside the cavity enhances the connection strength. The annular distribution of the air chambers allows the airbag to expand and seal in the entire circumference. The sealing gasket provides auxiliary protection, solving the problem of poor sealing in traditional single-layer structures. The flexible contact between the airbag and the inner ring groove reduces switch wear. The inflation and expansion adapt to pipeline deformation, forming a composite seal, improving sealing reliability and component life, and avoiding safety hazards caused by seal failure.

[0020] 2. In this disclosure, the cooling component utilizes the raised layer and the feeding pipe to form a circulation chamber, and the flow pipe connects to the circulation chamber to form a water circulation system. The arc-shaped inclined surface of the raised layer does not obstruct the material, increases the heat exchange area, and the low-temperature water flow absorbs the heat of the pipe, maintains the low temperature of the pipe, solves the heat conduction problem of traditional structures, prevents high temperature from affecting the material and external components, ensures the safe operation of the feeding mechanism, and improves the applicability of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0023] Figure 2 This is an isometric drawing of the present disclosure;

[0024] Figure 3 This is an isometric sectional view of the present disclosure;

[0025] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0026] In the diagram: 1. Feed pipe; 2. Outer frame; 3. Through cavity; 4. Sealing assembly; 4-1. Inner annular groove; 4-2. Sealing gasket; 4-3. Hydraulic cylinder; 4-4. Gate; 4-5. Air cavity; 4-6. Annular groove; 4-7. Through hole; 4-8. Airbag cushion; 4-9. Nozzle; 4-10. Connecting nozzle; 5. Cooling assembly; 5-1. Raised layer; 5-2. Circulation cavity; 5-3. Flow pipe; 6. Notch. Detailed Implementation

[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1-4 As shown, a material feeding mechanism according to an embodiment of the present disclosure is included:

[0034] The feed pipe 1 and several external frames 2 are all fixed to the outside of the feed pipe 1;

[0035] Several through cavities 3 and a sealing assembly 4, wherein the through cavities 3 are all opened in the outer frame 2 and the feed pipe 1;

[0036] Cooling component 5, wherein the cooling component 5 is disposed in the feed pipe 1;

[0037] The sealing component 4 includes a pair of inner annular grooves 4-1, which are formed on opposite surfaces within the cavity 3. A sealing gasket 4-2 is provided within the inner annular groove 4-1. A hydraulic cylinder 4-3 is installed at one end of the outer frame 2. A gate 4-4 is provided at the output end of the hydraulic cylinder 4-3. The gate 4-4 slides and fits into the cavity 3. An air chamber 4-5 is provided within the gate 4-4. Annular grooves 4-6 are formed on both surfaces of the gate 4-4. Several through holes 4-7 are formed within the annular grooves 4-6. An airbag 4-8 is installed within the annular grooves 4-6 and fills and fits into the inner annular grooves 4-1. Several insertion nozzles 4-9 are provided on the surface of the airbag 4-8. The insertion nozzles 4-9 are inserted into the through holes 4-7. A connecting nozzle 4-10 is installed on the gate 4-4 and communicates with the air chamber 4-5.

[0038] In some examples, a sealing component 4 is designed to achieve efficient sealing and avoid wear on the switch. This component is based on an inner annular groove 4-1 formed on two opposing surfaces within the cavity 3. A sealing gasket 4-2 within the inner annular groove 4-1 provides initial sealing protection. A hydraulic cylinder 4-3 at one end of the outer frame 2 serves as the power source, and its output gate 4-4 can slide within the cavity 3 to open and close the channel. The air chamber 4-5 inside the gate 4-4 is the core sealing structure. When the gate 4-4 is closed, gas is injected into the air chamber 4-5 through the connecting nozzle 4-10. The gas enters the airbag 4-8 within the annular groove 4-6 through the through-hole 4-7, causing it to expand and tightly fill the inner annular groove 4-1, forming a flexible sealing layer. This airbag filling sealing method, compared to traditional rigid sealing structures, can adapt to the slight unevenness of the inner wall of the cavity 3, ensuring a good sealing effect. Meanwhile, the flexible contact between the airbag 4-8 and the inner ring groove 4-1 allows the airbag 4-8 to elastically deform as the gate 4-4 slides during opening and closing, preventing wear caused by friction and extending the service life of the sealing components. Through the inflation and expansion sealing of the air chamber 4-5 and the airbag 4-8, the auxiliary protection of the sealing gasket 4-2, and the flexible opening and closing of the gate 4-4 driven by the hydraulic cylinder 4-3, the sealing assembly 4 achieves reliable sealing and low-wear operation.

[0039] like Figures 1-4 As shown in the figure, the cooling component 5 in this embodiment includes several protrusions 5-1. The protrusions 5-1 are all disposed on the inner wall of the feed pipe 1. A circulation cavity 5-2 is opened between the protrusions 5-1 and the feed pipe 1. Both ends of the outer wall of the feed pipe 1 are connected to flow pipes 5-3. The flow pipes 5-3 are connected to the inside of the circulation cavity 5-2.

[0040] In some examples, a cooling component 5 is designed to achieve a continuous cooling effect. This component relies on a protrusion 5-1 on the inner wall of the feed pipe 1, and the circulation chamber 5-2 formed between the protrusion 5-1 and the feed pipe 1 serves as a low-temperature water flow channel. Flow pipes 5-3 connected to both ends of the outer wall of the feed pipe 1 can be connected to external circulating water pumps and refrigeration equipment, forming a complete water circulation cooling system. When low-temperature water is injected into the circulation chamber 5-2 through one end of the flow pipe 5-3, it circulates within the chamber, absorbing the heat generated by the material transfer within the feed pipe 1. It then flows out through the other end of the flow pipe 5-3, re-enters the refrigeration equipment for cooling, and circulates again. The protrusion 5-1 increases the contact area between the circulation chamber 5-2 and the feed pipe 1, improving heat exchange efficiency and allowing the low-temperature water to more effectively remove heat from the pipe. Through the water circulation channel formed by the circulation chamber 5-2 and the flow pipe 5-3, and the continuous cooling circulation of the external equipment, the cooling component 5 can keep the feed pipe 1 in a stable low temperature state, effectively avoiding the impact of high temperature on material properties or the occurrence of safety hazards caused by the material transportation process.

[0041] For example, such as Figure 3 As shown, the air chambers 4-5 are arranged in a ring around the inside of the feed pipe 1.

[0042] In some examples, the air chamber 4-5 is distributed around the perimeter to completely cover the feed pipe 1, forming a tight seal with the gate 4-4. This annular distribution design ensures uniform sealing pressure throughout the entire circumference of the gate 4-4. Even if the pipe undergoes minor deformation due to high temperature, the elastic compensation of the air chamber 4-5 maintains the sealing effect. Furthermore, the air chamber 4-5 is filled with high-temperature resistant silicone rubber, which can withstand the high-temperature environment inside the explosion-proof furnace, preventing a decline in sealing performance due to material aging. Combined with the metal sealing ring at the edge of the gate 4-4, this forms a composite sealing structure of elastic buffering and hard sealing, significantly improving the sealing reliability of the feed switch.

[0043] For example, such as Figure 3 As shown, the surface of the protrusion 5-1 has an inclined structural surface with an arc transition around its perimeter.

[0044] In some examples, the inclined transition surfaces allow materials to slide smoothly into the explosion-proof furnace without obstruction.

[0045] For example, such as Figure 1 As shown, the inner wall of the cavity 3 is a concave structure surface all around, and the gate 4-4 is embedded in the concave part of the cavity 3.

[0046] In some examples, the concave structural surface can increase the connection strength between the gate 4-4 and the outer frame 2, providing impact resistance and preventing detachment, thus effectively improving the sealing condition. The concave structure of the inner wall of the cavity 3 forms an embedded fit with the shape of the gate 4-4. When the gate 4-4 is impacted by the gas pressure inside the furnace, the edge of the concave structure can prevent the gate 4-4 from shifting.

[0047] For example, such as Figure 4 As shown, the outer frame 2 has notches 6 on its surface, and the connecting nozzles 4-10 are embedded in the notches 6.

[0048] In some examples, by providing a notch 6 to avoid the position of the connecting nozzle 4-10 and covering the outside of the connecting nozzle 4-10, the sealing components are prevented from being damaged by external impact, further enhancing the impact resistance and ensuring a stable connection between the gate 4-4 and the passage cavity 3 under high pressure.

[0049] In actual use: the outer frame 2 is fixed to the outside of the feed pipe 1. The through cavity 3 is opened inside the outer frame 2 and the feed pipe 1. The inner annular groove 4-1 of the sealing component 4 is opened on the two opposite surfaces of the through cavity 3. The sealing gasket 4-2 is installed in the inner annular groove 4-1. The hydraulic cylinder 4-3 is installed at one end of the outer frame 2. The gate 4-4 is connected to the output end of the hydraulic cylinder 4-3 and slides against the through cavity 3. An air chamber 4-5 is opened inside the gate 4-4. An annular groove 4-6 is opened on both surfaces of the gate 4-4. A through hole 4-7 is opened in the annular groove 4-6. An airbag 4-8 is installed in the annular groove 4-6. The plug 4-9 is inserted into the through hole 4-7. The connecting nozzle 4-10 is installed... The gate 4-4 is connected to the air chamber 4-5. The protrusion 5-1 of the cooling component 5 is set on the inner wall of the feed pipe 1. The circulation chamber 5-2 is opened between the protrusion 5-1 and the feed pipe 1. The flow pipe 5-3 is connected to both ends of the outer wall of the feed pipe 1 and is connected to the circulation chamber 5-2. When in use, the hydraulic cylinder 4-3 drives the gate 4-4 to slide open the passage chamber 3. The material is conveyed through the feed pipe 1. When closed, the gate 4-4 is embedded in the concave structure of the passage chamber 3, and the air chamber 4-5 is inflated to make the airbag 4-8 expand and fill the inner ring groove 4-1. At the same time, the cooling component 5 injects low temperature water into the circulation chamber 5-2 through the flow pipe 5-3, absorbs the heat of the feed pipe 1 and flows out for circulation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A material feeding mechanism, characterized in that, include: The feed pipe (1) and several outer frames (2) are fixed outside the feed pipe (1); Several through cavities (3) and a sealing assembly (4), wherein the through cavities (3) are all opened in the outer frame (2) and the feed pipe (1); Cooling component (5), wherein the cooling component (5) is disposed in the feed pipe (1); The enclosed assembly (4) includes a pair of inner annular grooves (4-1), which are formed on opposite surfaces within the cavity (3). A sealing gasket (4-2) is provided within the inner annular groove (4-1). A hydraulic cylinder (4-3) is installed at one end of the outer frame (2). A gate (4-4) is provided at the output end of the hydraulic cylinder (4-3), and the gate (4-4) slides and fits within the cavity (3).

2. The material feeding mechanism according to claim 1, characterized in that, An air chamber (4-5) is provided inside the gate (4-4). Annular grooves (4-6) are provided on both surfaces of the gate (4-4). Several through holes (4-7) are provided inside the annular grooves (4-6). An airbag cushion (4-8) is installed inside the annular grooves (4-6), and the airbag cushion (4-8) is filled and fitted into the inner annular groove (4-1).

3. The material feeding mechanism according to claim 2, characterized in that, The surface of the airbag cushion (4-8) is provided with a plurality of plugs (4-9), the plugs (4-9) are inserted into the through hole (4-7), and the gate (4-4) is provided with a connecting nozzle (4-10), the connecting nozzle (4-10) is connected to the air chamber (4-5).

4. The material feeding mechanism according to claim 1, characterized in that, The cooling component (5) includes several protrusions (5-1), each of which is disposed on the inner wall of the feed pipe (1). A circulation chamber (5-2) is provided between the protrusions (5-1) and the feed pipe (1). Both ends of the outer wall of the feed pipe (1) are connected to flow pipes (5-3), and the flow pipes (5-3) are connected to the inside of the circulation chamber (5-2).

5. A material feeding mechanism according to claim 2, characterized in that, The air chambers (4-5) are arranged in a ring around the inside of the feed pipe (1).

6. A material feeding mechanism according to claim 4, characterized in that, The surface of the protrusion (5-1) is an inclined structural surface with an arc transition around its perimeter.

7. A material feeding mechanism according to claim 1, characterized in that, The inner wall of the cavity (3) is concave all around, and the gate (4-4) is embedded in the concave part of the cavity (3).

8. A material feeding mechanism according to claim 3, characterized in that, The outer frame (2) has notches (6) on its surface, and the connecting nozzles (4-10) are fitted into the notches (6).

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