Arch-breaking valve, rotary scraper arch-breaking device and its usage method

Abstract

This invention belongs to the field of valve technology, and particularly relates to an arch-breaking valve, a rotary scraper arch-breaking device, and its usage method. The arch-breaking valve includes: a scraper mechanism disposed on the inner wall of a rotating sleeve and extending upwards from the top surface of the rotating sleeve; a vertical section fixedly disposed on the inner wall of the rotating sleeve; an inclined section connected to the top of the vertical section, the inclined section being further away from the axis of the rotating sleeve as it approaches its top; a blowing assembly having several air outlets on the forward-facing side of the rotating sleeve; and when the inclined section breaks the arch, if the pressure on the blowing assembly does not exceed a preset value, the blowing assembly and the inclined section maintain relative to each other. When the air outlet is tilted downwards, the air is discharged. If the pressure on the blowing component exceeds the preset value, the blowing component deflects to make the air discharge direction of the tilted air outlet approximately horizontal. When the blowing component is not compressed, it is parallel to the tilted section, and the air discharge direction of the air outlet is tilted downwards. When the blowing component is compressed, it rotates, and the air discharge direction of the air outlet becomes horizontal. This allows the powder to press against the blowing component when there is too much powder in the powder hopper, making the air discharge direction of the air outlet horizontal and blowing the powder off the inner wall of the powder hopper. This prevents the tilted section from pressing the powder onto the inner wall of the powder hopper during rotation.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, and particularly relates to an arch-breaking valve, a rotary scraper arch-breaking device, and a method of using it. Background Technology

[0002] In existing rotary scraper arch-breaking devices, powder adheres to the inner wall of the powder silo during the discharge process, preventing free discharge. Furthermore, because the scraper is a straight plate and the lower half of the powder silo is conical, there is a gap between the scraper and the inner wall of the silo. Therefore, when powder with a certain moisture content and poor flowability is discharged, the rotating scraper exerts a force on the powder between the scraper and the inner wall of the silo, causing the powder to be compacted against the inner wall and unable to be discharged freely.

[0003] Therefore, due to the technical problem that the rotating scraper will compact the powder between the scraper and the inner wall of the powder silo, it is necessary to design an arch-breaking valve, a rotary scraper arch-breaking device, and a method of use.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0005] This disclosure provides at least one arch-breaking valve, a rotary scraper arch-breaking device, and a method of using it.

[0006] In a first aspect, embodiments of this disclosure provide an arch-breaking valve, comprising:

[0007] Rotary sleeve; and

[0008] A scraper mechanism is disposed on the inner wall of the rotating sleeve and extends upward from the top surface of the rotating sleeve;

[0009] The scraper mechanism includes: a vertical section and an inclined section;

[0010] The vertical section is fixedly installed on the inner wall of the rotating sleeve;

[0011] The inclined section is connected to the top of the vertical section and is inclined to the outside of the rotating sleeve;

[0012] A blowing assembly is rotatably provided on the outer side of the inclined section, and the blowing assembly has several inclined air outlet holes on the front side of the rotating sleeve in the direction of rotation.

[0013] When the inclined section breaks the arch, if the pressure on the blowing component does not exceed the preset value, the blowing component and the inclined section remain aligned, and the inclined air outlet will release air downwards.

[0014] If the blowing assembly is subjected to pressure greater than a preset value, the blowing assembly deflects to make the air outlet direction approximately horizontal. The rotating sleeve, and

[0015] A scraper mechanism is disposed on the inner wall of the rotating sleeve and extends upward from the top surface of the rotating sleeve;

[0016] The scraper mechanism includes: a vertical section and an inclined section;

[0017] The vertical section is fixedly installed on the inner wall of the rotating sleeve;

[0018] The inclined section is connected to the top of the vertical section, and the closer the inclined section is to its top, the further away it is from the axis of the rotating sleeve.

[0019] A blowing assembly is rotatably provided on the side of the inclined section away from the axis of the rotating sleeve, and the blowing assembly has several air outlets on the side of the rotating sleeve facing forward in the direction of rotation.

[0020] When the blowing assembly is not compressed, the blowing assembly is parallel to the inclined section, and the air outlet is inclined downward.

[0021] When the blowing assembly is compressed, it rotates, and the air outlet is in a horizontal direction.

[0022] In one alternative embodiment, the blowing assembly includes: a rotating rod;

[0023] The inclined section is hollow inside;

[0024] The rotating rod is hollow inside, and a plurality of air outlets are provided on the side of the rotating rod facing forward in the direction of rotation of the rotating sleeve. The air outlets are obliquely arranged.

[0025] The rotating rod is provided with a rotating shaft, which is hollow inside and open at both ends and extends into the inclined section.

[0026] The rotating shaft is rotatably connected to the inclined section;

[0027] The rotating shaft is connected to the interior of the rotating rod, and the rotating rod is connected to the interior of the inclined section, so that the gas inside the inclined section enters the rotating rod after passing through the rotating shaft and is ejected from the gas outlet.

[0028] In one alternative embodiment, the top surface of the inclined section is open, and a lifting sleeve is slidably disposed on the top, the lifting sleeve covering the open top surface of the inclined section.

[0029] A crossbar is provided near the top of the inclined section;

[0030] A limit cylinder is vertically provided on the top surface of the crossbar;

[0031] A sliding rod is vertically arranged on the top surface of the lifting sleeve. The sliding rod extends into the limiting cylinder and is slidably connected to the limiting cylinder.

[0032] The limiting cylinder and the sliding rod are fitted with a return spring. One end of the return spring is connected to the crossbar, and the other end is connected to the inner top surface of the lifting sleeve.

[0033] A straight rod is vertically arranged on the inner top surface of the lifting sleeve, and a rack is provided on the straight rod;

[0034] A gear is provided on the rotating shaft, and the gear meshes with the rack.

[0035] In one optional embodiment, when the lifting sleeve is subjected to powder pressure exceeding a preset value, it descends, the reset spring is compressed, and the rack drives the gear to rotate, so that the rotating shaft drives the rotating rod to rotate, making the air outlet direction horizontal.

[0036] When the pressure from the powder material on the lifting sleeve does not exceed the preset value, the return spring resets, causing the lifting sleeve to rise. The rotating rod rotates to align with the inclined section, and the air outlet direction is tilted downwards. When the lifting sleeve is pressed down, the return spring is compressed, and the rack drives the gear to rotate, causing the rotating shaft to drive the rotating rod to rotate, making the air outlet direction horizontal.

[0037] When the lifting sleeve is not compressed, the return spring resets, causing the lifting sleeve to rise, the rotating rod to rotate to be parallel to the inclined section, and the air outlet to tilt downwards.

[0038] In one alternative embodiment, a toothed ring is provided around the outer wall of the rotating sleeve;

[0039] A chain is engaged on the toothed ring;

[0040] The chain is connected to the drive motor via a transmission assembly;

[0041] The drive motor drives the rotating sleeve to rotate via a chain.

[0042] In one optional embodiment, the rotating sleeve is fitted with a positioning sleeve, and the top surface of the positioning sleeve is provided with a cover plate;

[0043] The bottom surface of the cover plate is provided with a groove, which is adapted to the top surface of the rotating sleeve. The top surface of the rotating sleeve extends into the groove, and there are gaps between the top surface of the rotating sleeve and each inner wall of the groove.

[0044] The top surface of the positioning sleeve is provided with a receiving groove, which is open on the side near the rotating sleeve and is covered by a cover plate.

[0045] A sealing ring is provided in the receiving groove. The sealing ring contacts the side wall of the rotating sleeve, and its top surface is lower than the bottom surface of the cover plate.

[0046] The positioning sleeve has a flow channel connected to an air source. The gas blown out by the air source enters the space between the sealing ring and the cover plate through the flow channel, flows into the gap between the rotating sleeve and the groove, and flows out from the gap, blowing towards the area surrounded by the rotating sleeve.

[0047] In one optional embodiment, an air passage is provided inside the rotating sleeve, and the air inlet of the air passage is connected to the space between the cover plate and the sealing ring.

[0048] The air outlet of the air passage is located on the inner wall of the rotating sleeve;

[0049] The vertical section is hollow and is connected to the inclined section;

[0050] The vertical section has a through hole on the side facing the rotating sleeve that communicates with the interior. The through hole is aligned with the air outlet of the air passage. The gas between the cover plate and the sealing ring enters the air passage through the air inlet, then enters the vertical section through the air outlet and the through hole, and is then ejected from the air outlet.

[0051] In one optional embodiment, an annular groove is formed on the inner wall of the positioning sleeve;

[0052] A plurality of rollers are provided in the annular groove, the rollers are located above the chain, and the rollers are in contact with the outer wall of the rotating sleeve;

[0053] A plurality of limiting wheels are provided in the annular groove, the limiting wheels are located below the chain, and the limiting wheels have limiting annular grooves formed on their outer walls;

[0054] A limiting ring is provided on the outer wall of the rotating sleeve, and the limiting ring extends into the limiting ring groove.

[0055] Secondly, this disclosure also provides a rotary scraper arch-breaking device, comprising:

[0056] The powder silo is equipped with the aforementioned anti-bridging valve at its bottom outlet, and the inclined section inside the anti-bridging valve extends into the powder silo.

[0057] The degree of inclination of the inclined section corresponds to the degree of inclination of the inner wall of the powder silo.

[0058] Thirdly, this disclosure also provides a method of using the above-mentioned arch-breaking valve, including:

[0059] When the inclined section breaks the arch, if the pressure on the blowing component does not exceed the preset value, the blowing component and the inclined section remain aligned, and the inclined air outlet will release air downwards.

[0060] If the blowing assembly is subjected to pressure greater than a preset value, the blowing assembly deflects to make the air outlet direction approximately horizontal. When the blowing assembly is not compressed, the blowing assembly is parallel to the inclined section, and the air outlet direction is tilted downwards.

[0061] When the blowing assembly is compressed, it rotates, and the air outlet is in a horizontal direction.

[0062] The beneficial effects of this invention are as follows: This arch-breaking valve includes: a rotating sleeve; and a scraper mechanism, wherein the scraper mechanism is disposed on the inner wall of the rotating sleeve and extends upward from the top surface of the rotating sleeve; the scraper mechanism includes: a vertical section and an inclined section; the vertical section is fixedly disposed on the inner wall of the rotating sleeve; the inclined section is connected to the top of the vertical section and is inclined outward from the rotating sleeve; a blowing assembly is rotatably disposed on the outer side of the inclined section, and the blowing assembly is provided with a plurality of inclined air outlets on the front side of the rotating sleeve in the direction of rotation; when the inclined section breaks the arch, if the pressure on the blowing assembly does not exceed a preset value, the blowing assembly remains aligned with the inclined section, and air is discharged downward from the inclined air outlets; if the pressure on the blowing assembly exceeds the preset value, the blowing assembly deflects so that the air discharge direction of the inclined air outlets is approximately horizontal. The scraper mechanism includes a vertical section and an inclined section. The vertical section is fixedly installed on the inner wall of the rotating sleeve. The inclined section is connected to the top of the vertical section and is inclined. The inclined section is further away from the axis of the rotating sleeve as it approaches its top. A blowing component is rotatably installed on the side of the inclined section away from the axis of the rotating sleeve. The blowing component has several air outlets on the side of the rotating sleeve facing forward. When the blowing component is not compressed, it is parallel to the inclined section, and the air outlets are inclined downward. When the blowing component is compressed, it rotates, and the air outlets are horizontal. This allows the powder to press against the blowing component when there is too much powder in the powder hopper, making the air outlets horizontal and blowing the powder off the inner wall of the powder hopper. This prevents the inclined section from pressing the powder onto the inner wall of the powder hopper during rotation.

[0063] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0064] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0065] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0066] Figure 1 This is a schematic diagram of the structure of an arch-breaking valve provided in an embodiment of the present disclosure;

[0067] Figure 2 This is a schematic diagram of the internal structure of an arch-breaking valve provided in an embodiment of the present disclosure;

[0068] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0069] Figure 4 This is a schematic diagram of the structure of a blowing assembly provided in an embodiment of the present disclosure;

[0070] Figure 5 A cross-sectional view of a blowing assembly provided in an embodiment of this disclosure;

[0071] Figure 6 This is a schematic diagram of a downward-sloping air outlet direction provided in an embodiment of the present disclosure;

[0072] Figure 7 This is a schematic diagram of a horizontal air outlet direction provided in an embodiment of the present disclosure.

[0073] In the picture:

[0074] 1. Rotary sleeve; 11. Toothed ring; 12. Limiting ring;

[0075] 2. Scraper mechanism, 21. Vertical section, 22. Inclined section, 23. Horizontal bar, 24. Limiting cylinder, 25. Through hole;

[0076] 3. Blowing assembly, 31. Air outlet, 32. Rotating rod, 33. Rotating shaft, 34. Lifting sleeve, 35. Sliding rod, 36. Return spring, 37. Straight rod, 38. Rack, 39. Gear;

[0077] 4 chains, 41 transmission components, 42 drive motors;

[0078] 5. Positioning sleeve, 51. Cover plate, 52. Groove, 53. Receiving groove, 54. Sealing ring, 55. Flow channel, 56. Air passage, 57. Annular groove, 58. Roller, 59. Limiting wheel, 591. Limiting ring groove. Detailed Implementation

[0079] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0080] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0081] When existing rotary scraper arch-breaking devices break up powder during the discharge process of powder silos, powder adheres to the inner wall of the silo and cannot be discharged freely. Because the scraper is a straight plate and the lower half of the powder silo is conical, there is a gap between the scraper and the inner wall of the powder silo. Therefore, during the discharge of powder with poor flowability, the rotating scraper will exert a force on the powder between the scraper and the inner wall of the powder silo, causing the powder to be compacted on the inner wall of the powder silo and unable to be discharged freely.

[0082] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0083] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0084] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0085] like Figure 1As shown, at least one disclosed embodiment provides an arch-breaking valve, including: a rotating sleeve 1; and a scraper mechanism 2, the scraper mechanism 2 being disposed on the inner wall of the rotating sleeve 1 and extending upward from the top surface of the rotating sleeve 1; the scraper mechanism 2 including: a vertical section 21 and an inclined section 22; the vertical section 21 being fixedly disposed on the inner wall of the rotating sleeve 1; the inclined section 22 being connected to the top of the vertical section 21 and inclined outward from the rotating sleeve 1; the outer surface of the inclined section 22 being rotatably provided with... The blowing assembly 3 has several inclined air outlets 31 on its front side in the rotation direction of the rotating sleeve 1. When the inclined section 22 breaks the arch, if the pressure on the blowing assembly 3 does not exceed a preset value, the blowing assembly 3 remains aligned with the inclined section 22, and air is discharged downward through the inclined air outlets 31. If the pressure on the blowing assembly 3 exceeds the preset value, the blowing assembly 3 deflects, so that the air discharge direction of the inclined air outlets 31 is approximately horizontal. The rotating sleeve 1 and the scraper mechanism 2 are also included. The scraper mechanism 2 extends upward from the top surface of the rotating sleeve 1 on the inner wall; the scraper mechanism 2 includes a vertical section 21 and an inclined section 22; the vertical section 21 is fixedly disposed on the inner wall of the rotating sleeve 1; the inclined section 22 is connected to the top of the vertical section 21, and the inclined section 22 is inclined, with the position of the inclined section 22 closer to its top being further away from the axis of the rotating sleeve 1; a blowing assembly 3 is rotatably disposed on the side of the inclined section 22 away from the axis of the rotating sleeve 1, and the blowing assembly 3 rotates as the rotating sleeve 1 rotates. Several air outlets 31 are provided on the forward-facing side; when the blowing component 3 is not compressed, the blowing component 3 is parallel to the inclined section 22, and the air outlet 31 is inclined downward; when the blowing component 3 is compressed, it rotates, and the air outlet 31 is horizontal, thus realizing that when there is too much powder in the powder hopper, the powder presses the blowing component 3, making the air outlet 31 horizontal, blowing the powder on the inner wall of the powder hopper off, and preventing the inclined section 22 from pressing the powder on the inner wall of the powder hopper during rotation.

[0086] The length of the inclined section 22 is consistent with the length of the cone-shaped powder hopper in the direction of the cone. In the initial state, the powder hopper is full of powder. All the powder above the upper end face of the lifting sleeve 34 exerts a force on the lifting sleeve 34, causing it to slide down on the inclined section 22, which drives the blowing component 3 to deflect. As the powder is discharged, the force on the upper end of the lifting sleeve 34 decreases and gradually rises, driving the rotating rod 32 to rotate. The rotation condition of the rotating rod 32 is that the resistance exerted by the powder flowing in the powder hopper on the rotating rod 32 is less than the rotational force of the rotating rod 32, and will not hinder the rotation of the rotating rod 32.

[0087] In this embodiment, the preset value can be the minimum force that the return spring 36 experiences when it begins to be compressed.

[0088] In this embodiment, the rotating sleeve 1 drives the scraper mechanism 2 to rotate, preventing powder from accumulating on the inner wall of the powder hopper. When the scraper mechanism 2 rotates, the blowing component 3 blows gas in front of the direction of rotation of the scraper mechanism 2, preventing the scraper mechanism 2 from pressing the powder onto the inner wall of the powder hopper. The inclined section 22 and the rotating rod 32 can scrape off the powder from the inner wall of the powder hopper.

[0089] In this embodiment, when there is a large amount of powder in the powder hopper, the powder will compress the blowing assembly 3, causing the blowing assembly 3 to become non-parallel to the inclined section 22. At this time, the direction of the gas blown out of the air outlet 31 is horizontal, such as... Figure 7 As shown in Figure f, the gas will blow the powder off the inner wall of the powder hopper before the inclined section 22 and the rotating rod 32, thus preventing the inclined section 22 and the rotating rod 32 from pressing the powder onto the inner wall of the powder hopper. At this time, the inclined section 22 and the rotating rod 32 are not parallel, which reduces the resistance encountered by the inclined section 22 and the rotating rod 32 during the rotational arch breaking process.

[0090] In this embodiment, when the powder in the powder hopper is low, the powder cannot compress the blowing assembly 3 to cause it to rotate. At this time, the rotating rod 32 is parallel to the inclined section 22, and the direction of the gas blown out of the air outlet 31 is inclined downwards. Figure 6 As shown in Figure F, the gas will blow the powder off the inner wall of the powder hopper before the inclined section 22 and the rotating rod 32. At the same time, the airflow direction assists in conveying the powder in the powder hopper downward, so as to avoid the powder from being suspended inside the powder hopper and affecting the discharge.

[0091] like Figure 4 As shown, in one optional embodiment, the blowing assembly 3 includes: a rotating rod 32; the inclined section 22 is hollow inside; the rotating rod 32 is hollow inside, and a plurality of air outlet holes 31 are equally spaced from top to bottom on the side of the rotating sleeve 1 facing forward, the air outlet holes 31 being obliquely arranged; a rotating shaft 33 is provided on the rotating rod 32, the rotating shaft 33 is hollow inside and open at both ends and extends into the inclined section 22; the rotating shaft 33 is rotatably connected to the inclined section 22; the rotating shaft 33 communicates with the interior of the rotating rod 32, and the rotating rod 32 communicates with the interior of the inclined section 22, so that the gas inside the inclined section 22 enters the rotating rod 32 after passing through the rotating shaft 33 and is ejected from the air outlet holes 31.

[0092] In this embodiment, high-pressure gas can be introduced into the hollow rotating rod 32, so that the gas can be blown out from the air outlet 31.

[0093] like Figure 5As shown, in one optional embodiment, the top surface of the inclined section 22 is open, and a lifting sleeve 34 is slidably disposed on the top, covering the open top surface of the inclined section 22; a crossbar 23 is disposed inside the inclined section 22 near its top position; a limiting cylinder 24 is vertically disposed on the top surface of the crossbar 23; a sliding rod 35 is vertically disposed on the top surface inside the lifting sleeve 34, the sliding rod 35 extends into the limiting cylinder 24 and is slidably connected to the limiting cylinder 24; a return spring 36 is disposed outside the limiting cylinder 24 and the sliding rod 35, one end of the return spring 36 is connected to the crossbar 23, and the other end is connected to the top surface inside the lifting sleeve 34; a straight rod 37 is vertically disposed on the top surface inside the lifting sleeve 34, and a rack 38 is disposed on the straight rod 37; a gear 39 is disposed on the rotating shaft 33, and the gear 39 meshes with the rack 38.

[0094] In this embodiment, when there is little powder in the powder hopper, the lifting sleeve 34 is not squeezed or the squeezing force is less than the elastic force of the return spring 36. At this time, the rotating rod 32 and the inclined section 22 are in a parallel state, and the air outlet 31 is inclined downward. The gas will blow the powder on the inner wall of the powder hopper down before the inclined section 22 and the rotating rod 32. At the same time, the airflow direction assists the powder in the powder hopper to be transported downward, so as to avoid the powder from being suspended inside the powder hopper and affecting the discharge.

[0095] In this embodiment, when there is a large amount of powder in the powder hopper, the squeezing force of the powder on the lifting sleeve 34 is greater than the elastic force of the return spring 36. The powder squeezes the lifting sleeve 34 downward, the return spring 36 is compressed, the straight rod 37 drives the rack 38 to move downward, and drives the gear 39 to rotate. This causes the rotating shaft 33 to rotate, which in turn drives the rotating rod 32 to rotate, so that the rotating rod 32 is not parallel to the inclined section 22, until the air outlet 31 is horizontal. At this time, the direction of the gas blown out of the air outlet 31 is horizontal. The gas will blow the powder off the inner wall of the powder hopper before the inclined section 22 and the rotating rod 32, avoiding the inclined section 22 and the rotating rod 32 pressing the powder firmly on the inner wall of the powder hopper. At this time, the inclined section 22 and the rotating rod 32 are not parallel, which reduces the resistance encountered by the inclined section 22 and the rotating rod 32 during the rotation and arch breaking process.

[0096] In this embodiment, when the return spring 36 is in the maximum compressed state, the tilt of the rotating rod 32 makes the vent 31 horizontal.

[0097] In this embodiment, the cooperation between the sliding rod 35 and the limiting cylinder 24 can limit the vertical movement of the lifting sleeve 34.

[0098] In one optional embodiment, when the lifting sleeve 34 is subjected to powder pressure exceeding a preset value, it descends, the reset spring 36 is compressed, the rack 38 drives the gear 39 to rotate, so that the rotating shaft 33 drives the rotating rod 32 to rotate, so that the air outlet 31 is horizontal.

[0099] When the pressure of the powder on the lifting sleeve 34 does not exceed the preset value, the reset spring 36 resets, causing the lifting sleeve 34 to rise. The rotating rod 32 rotates to align with the inclined section 22, and the air outlet 31 tilts downwards. When the lifting sleeve 34 is pressed down, the reset spring 36 is compressed, and the rack 38 drives the gear 39 to rotate, causing the rotating shaft 33 to drive the rotating rod 32 to rotate, making the air outlet 31 horizontal. When the lifting sleeve 34 is not compressed, the reset spring 36 resets, causing the lifting sleeve 34 to rise. The rotating rod 32 rotates to be parallel to the inclined section 22, and the air outlet 31 tilts downwards.

[0100] like Figure 2 As shown, in one optional embodiment, a toothed ring 11 is arranged around the outer wall of the rotating sleeve 1; a chain 4 is engaged on the toothed ring 11; the chain 4 is connected to the drive motor 42 through a transmission assembly 41; the drive motor 42 drives the rotating sleeve 1 to rotate through the chain 4.

[0101] In this embodiment, the drive motor 42 can drive the chain 4 to move through the transmission assembly 41, so that the rotating sleeve 1 can be rotated through the chain 4.

[0102] like Figure 3 As shown, in one optional embodiment, a positioning sleeve 5 is fitted over the rotating sleeve 1, and a cover plate 51 is provided on the top surface of the positioning sleeve 5; a groove 52 is formed on the bottom surface of the cover plate 51, the groove 52 is adapted to the top surface of the rotating sleeve 1, the top surface of the rotating sleeve 1 extends into the groove 52, and there are gaps between the top surface of the rotating sleeve 1 and each inner wall of the groove 52 to facilitate the flow of gas; a receiving groove 53 is formed on the top surface of the positioning sleeve 5, and the side of the receiving groove 53 close to the rotating sleeve 1 is provided with the receiving groove 53. The receiving groove 53 is open and covered by a cover plate 51. A sealing ring 54 is provided in the receiving groove 53. The sealing ring 54 contacts the side wall of the rotating sleeve 1 and its top surface is lower than the bottom surface of the cover plate 51. A flow channel 55 is provided in the positioning sleeve 5. The flow channel 55 is connected to an air source. The gas blown out by the air source enters the space between the sealing ring 54 and the cover plate 51 through the flow channel 55 and flows into the gap between the rotating sleeve 1 and the groove 52. It then flows out from the gap and blows into the area surrounded by the rotating sleeve 1.

[0103] In this embodiment, the powder in the powder hopper can fall through the area enclosed by the lifting sleeve 34, and the sealing ring 54 can prevent the powder from entering between the rotating sleeve 1 and the positioning sleeve 5.

[0104] In this embodiment, the groove 52 can limit the rotation of the rotating sleeve 1.

[0105] In this embodiment, the top surface of the rotating sleeve 1 extends into the groove 52, so that the bottom surface of the cover plate 51 is lower than the top surface of the rotating sleeve 1. When the airflow blows out from the gap between the groove 52 and the inner wall of the rotating sleeve 1, the airflow direction is downward, so as to avoid the airflow from obstructing the powder in the area surrounded by the rotating sleeve 1 from falling downward.

[0106] In this embodiment, the high-pressure gas blown out by the air source is blown out from the gap between the groove 52 and the inner wall of the rotating sleeve 1, which can prevent powder from entering the space between the positioning sleeve 5 and the rotating sleeve 1 through the gap between the rotating sleeve 1 and the groove 52.

[0107] In this embodiment, the interiors of the vertical section 21, the inclined section 22, the rotating shaft 33, and the rotating rod 32 are all connected.

[0108] In one optional embodiment, the rotating sleeve 1 has an air passage 56, the air inlet of which communicates with the space between the cover plate 51 and the sealing ring 54; the air outlet of the air passage 56 is located on the inner wall of the rotating sleeve 1; the vertical section 21 is hollow and communicates with the inclined section 22; the side of the vertical section 21 facing the rotating sleeve 1 has a through hole 25 communicating with the interior, the through hole 25 is aligned with the air outlet of the air passage 56, the gas between the cover plate 51 and the sealing ring 54 enters the air passage 56 through the air inlet, then enters the vertical section 21 through the air outlet and the through hole 25, and is then ejected from the air outlet 31.

[0109] In this embodiment, the flow channel 55 can be connected to a high-pressure gas delivery device. After the high-pressure gas enters the flow channel 55, it is blown out from the gap between the groove 52 and the inner wall of the rotating sleeve 1. At the same time, the gas enters the air passage 56, flows into the scraper mechanism 2, and is blown out from the air outlet 31.

[0110] In one optional embodiment, an annular groove 57 is formed on the inner wall of the positioning sleeve 5; a plurality of rollers 58 are arranged in the annular groove 57, the rollers 58 are located above the chain 4, and the rollers 58 are in contact with the outer wall of the rotating sleeve 1; a plurality of limiting wheels 59 are arranged in the annular groove 57, the limiting wheels 59 are located below the chain 4, and a limiting ring groove 591 is formed on the outer wall of the limiting wheels 59; a limiting ring 12 is provided on the outer wall of the rotating sleeve 1, and the limiting ring 12 extends into the limiting ring groove 591.

[0111] In this embodiment, the roller 58 can assist in the rotation of the rotating sleeve 1.

[0112] In this embodiment, part of the chain 4 is located in the annular groove 57, and the chain 4 passes through the annular groove 57 and connects to the transmission assembly 41.

[0113] In this embodiment, the engagement between the limiting ring 12 and the limiting ring groove 591 can limit the rotation of the rotating sleeve 1.

[0114] At least one other disclosed embodiment also provides a rotary scraper arch-breaking device, comprising: a powder silo, wherein the aforementioned arch-breaking valve is provided at the bottom outlet, and an inclined section 22 inside the arch-breaking valve extends into the powder silo; the inclination degree of the inclined section 22 corresponds to the inclination degree of the inner wall of the powder silo.

[0115] At least one other disclosed embodiment also provides a method of using the above-described arch-breaking valve, comprising: when the inclined section 22 is breaking the arch, if the pressure on the blowing assembly 3 does not exceed a preset value, the blowing assembly 3 remains aligned with the inclined section 22, and the inclined air outlet 31 discharges air downwards; if the pressure on the blowing assembly 3 exceeds the preset value, the blowing assembly 3 deflects so that the air outlet direction of the inclined air outlet 31 is approximately horizontal. When the blowing assembly 3 is not compressed, the blowing assembly 3 is parallel to the inclined section 22, and the air outlet direction of the air outlet 31 is inclined downwards; when the blowing assembly 3 is compressed, it rotates, and the air outlet direction of the air outlet 31 is horizontal.

[0116] In summary, this arch-breaking valve includes: a rotating sleeve 1; and a scraper mechanism 2. The scraper mechanism 2 is disposed on the inner wall of the rotating sleeve 1 and extends upward from the top surface of the rotating sleeve 1. The scraper mechanism 2 includes: a vertical section 21 and an inclined section 22. The vertical section 21 is fixedly disposed on the inner wall of the rotating sleeve 1. The inclined section 22 is connected to the top of the vertical section 21 and is inclined outward from the rotating sleeve 1. A blowing assembly 3 is rotatably disposed on the outer side of the inclined section 22. The blowing assembly 3 has several inclined air outlets 31 on the front side of the rotating sleeve 1 in the direction of rotation. When the inclined section 22 breaks the arch, if the pressure on the blowing assembly 3 does not exceed a preset value, the blowing assembly 3 remains aligned with the inclined section 22, and air is discharged downward through the inclined air outlets 31. If the pressure on the blowing assembly 3 exceeds the preset value, the blowing assembly 3 deflects, so that the air discharge direction of the inclined air outlets 31 is approximately horizontal. The rotating sleeve 1 and the scraper mechanism 2 are also present. The scraper mechanism 2 is disposed on the inner wall of the rotating sleeve 1. And it extends upward from the top surface of the rotating sleeve 1; the scraper mechanism 2 includes: a vertical section 21 and an inclined section 22; the vertical section 21 is fixedly disposed on the inner wall of the rotating sleeve 1; the inclined section 22 is connected to the top of the vertical section 21, the inclined section 22 is inclined, and the closer the inclined section 22 is to its top, the further away from the axis of the rotating sleeve 1; a blowing component 3 is rotatably disposed on the side of the inclined section 22 away from the axis of the rotating sleeve 1, the blowing component 3 is oriented towards the rotating sleeve 1 in the rotation direction. Several air vents 31 are provided on the front side; when the blowing component 3 is not squeezed, the blowing component 3 is parallel to the inclined section 22, and the air outlet 31 is inclined downward; when the blowing component 3 is squeezed, it rotates, and the air outlet 31 is horizontal, thus realizing that when there is too much powder in the powder hopper, the powder presses the blowing component 3, making the air outlet 31 horizontal, blowing the powder on the inner wall of the powder hopper off, and preventing the inclined section 22 from pressing the powder on the inner wall of the powder hopper during rotation.

[0117] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0118] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0119] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0120] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0121] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An arch-breaking valve, characterized in that, include: Rotary sleeve (1); and Scraper mechanism (2), the scraper mechanism (2) is disposed on the inner wall of the rotating sleeve (1) and extends upward from the top surface of the rotating sleeve (1); The scraper mechanism (2) includes: a vertical section (21) and an inclined section (22); The vertical section (21) is fixedly installed on the inner wall of the rotating sleeve (1); The inclined section (22) is connected to the top of the vertical section (21) and is inclined to the outside of the rotating sleeve (1); The outer side of the inclined section (22) is rotatably provided with a blowing component (3), and the blowing component (3) is provided with a plurality of inclined air outlet holes (31) on the front side of the rotating sleeve (1) in the direction of rotation. When the inclined section (22) breaks the arch, if the pressure on the blowing component (3) does not exceed the preset value, the blowing component (3) and the inclined section (22) remain aligned, and the inclined air outlet (31) discharges air downwards. If the blowing component (3) is subjected to pressure greater than the preset value, the blowing component (3) will deflect so that the air outlet direction of the inclined air outlet (31) is approximately horizontal. The blowing assembly (3) includes: a rotating rod (32); The inclined section (22) is hollow inside; The rotating rod (32) is hollow inside. The rotating rod (32) has several air outlets (31) on the side of the rotating sleeve (1) facing forward. The air outlets (31) are obliquely arranged. The rotating rod (32) is provided with a rotating shaft (33), which is hollow inside and open at both ends and extends into the inclined section (22); The rotating shaft (33) is rotatably connected to the inclined section (22); The rotating shaft (33) is internally connected to the rotating rod (32), and the rotating rod (32) is internally connected to the inclined section (22), so that the gas inside the inclined section (22) enters the rotating rod (32) after passing through the rotating shaft (33) and is ejected from the air outlet (31); The top surface of the inclined section (22) is open, and a lifting sleeve (34) is slidably provided on the top, which covers the top surface of the inclined section (22). A crossbar (23) is provided near the top of the inclined section (22); A limit tube (24) is vertically provided on the top surface of the crossbar (23); A sliding rod (35) is vertically arranged on the top surface of the lifting sleeve (34). The sliding rod (35) extends into the limiting cylinder (24) and is slidably connected to the limiting cylinder (24). The limiting cylinder (24) and the sliding rod (35) are fitted with a return spring (36). One end of the return spring (36) is connected to the crossbar (23), and the other end is connected to the inner top surface of the lifting sleeve (34). A straight rod (37) is vertically arranged on the inner top surface of the lifting sleeve (34), and a rack (38) is arranged on the straight rod (37). A gear (39) is provided on the rotating shaft (33), and the gear (39) meshes with the rack (38).

2. The arch-breaking valve as described in claim 1, characterized in that: When the lifting sleeve (34) is subjected to powder pressure exceeding the preset value, it descends, the reset spring (36) is compressed, the rack (38) drives the gear (39) to rotate, so that the rotating shaft (33) drives the rotating rod (32) to rotate, so that the air outlet (31) is horizontal; When the pressure of the powder material on the lifting sleeve (34) does not exceed the preset value, the reset spring (36) resets, causing the lifting sleeve (34) to rise, and the rotating rod (32) rotates to align with the inclined section (22), and the air outlet (31) tilts downward.

3. The arch-breaking valve as described in claim 2, characterized in that: A toothed ring (11) is provided around the outer wall of the rotating sleeve (1); A chain (4) is engaged on the toothed ring (11); The chain (4) is connected to the drive motor (42) via a transmission assembly (41); The drive motor (42) drives the rotating sleeve (1) to rotate via the chain (4).

4. The arch-breaking valve as described in claim 3, characterized in that: The rotating sleeve (1) is fitted with a positioning sleeve (5), and the top surface of the positioning sleeve (5) is provided with a cover plate (51). The bottom surface of the cover plate (51) is provided with a groove (52), which is adapted to the top surface of the rotating sleeve (1). The top surface of the rotating sleeve (1) extends into the groove (52), and there are gaps between it and each inner wall of the groove (52). The top surface of the positioning sleeve (5) is provided with a receiving groove (53), which is open on the side near the rotating sleeve (1) and is covered by a cover plate (51). A sealing ring (54) is provided in the receiving groove (53). The sealing ring (54) contacts the side wall of the rotating sleeve (1), and its top surface is lower than the bottom surface of the cover plate (51). The positioning sleeve (5) has a flow channel (55) inside. The flow channel (55) is connected to the air source. The gas blown out by the air source enters the space between the sealing ring (54) and the cover plate (51) through the flow channel (55) and flows into the gap between the rotating sleeve (1) and the groove (52). It then flows out from the gap and blows towards the area surrounded by the rotating sleeve (1).

5. The arch-breaking valve as described in claim 4, characterized in that: The rotating sleeve (1) has an air passage (56) inside, and the air inlet of the air passage (56) is connected to the space between the cover plate (51) and the sealing ring (54). The air outlet of the air passage (56) is located on the inner wall of the rotating sleeve (1); The vertical section (21) is hollow and is connected to the inclined section (22); The vertical section (21) has a through hole (25) communicating with the interior on the side facing the rotating sleeve (1). The through hole (25) is aligned with the air outlet of the air passage (56). The gas between the cover plate (51) and the sealing ring (54) enters the air passage (56) through the air inlet, then enters the vertical section (21) through the air outlet and the through hole (25), and then is ejected from the air outlet (31).

6. The arch-breaking valve as described in claim 5, characterized in that: The positioning sleeve (5) has an annular groove (57) on its inner wall; A plurality of rollers (58) are provided in the annular groove (57), the rollers (58) are located above the chain (4), and the rollers (58) are in contact with the outer wall of the rotating sleeve (1); A plurality of limiting wheels (59) are provided in the annular groove (57). The limiting wheels (59) are located below the chain (4), and a limiting annular groove (591) is provided on the outer wall of the limiting wheel (59). A limiting ring (12) is provided on the outer wall of the rotating sleeve (1), and the limiting ring (12) extends into the limiting ring groove (591).

7. A rotary scraper arch-breaking device, characterized in that, include: The powder silo is provided with an arch-breaking valve as described in any one of claims 1-6 at its bottom outlet, and the inclined section (22) inside the arch-breaking valve extends into the powder silo; The degree of inclination of the inclined section (22) corresponds to the degree of inclination of the inner wall of the powder silo.

8. A method of using the arch-breaking valve as described in claim 1, characterized in that, include: When the inclined section (22) breaks the arch, if the pressure on the blowing component (3) does not exceed the preset value, the blowing component (3) and the inclined section (22) remain aligned, and the inclined air outlet (31) discharges air downwards. If the blowing component (3) is subjected to pressure greater than the preset value, the blowing component (3) will deflect so that the air outlet (31) of the inclined air outlet (31) is approximately horizontal.

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