Lifting type sealing valve for dust remover
The lifting-type sealing valve structure solves the problems of poor sealing performance and large space occupation of slide gate valves in industrial dust collectors, achieving better sealing performance and smaller valve size, ensuring smooth dust discharge and labor-saving operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-04-03
AI Technical Summary
The slide gate valves used in existing industrial dust collectors have problems such as poor sealing performance, high processing cost, easy wear, easy jamming, and large space occupation.
The valve adopts a lifting-type sealing valve structure, including an outer shell, valve body assembly, sealing assembly, control assembly, and limit assembly. The sealing is achieved through the lifting movement of the valve body, avoiding wear of the sealing ring, and dividing the large-size discharge port into multiple small-size discharge gaps.
It improves sealing performance, reduces processing costs and valve size, ensures smooth dust discharge and prevents dust accumulation, and makes operation easier and extends service life.
Smart Images
Figure CN121782368A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of industrial dust collectors, and particularly relates to a lifting type sealing valve for a dust collector. Background Art
[0002] At present, most of the valves installed below the ash hopper of industrial dust collectors on the market are gate valves, which achieve the opening and closing of the valve by moving the valve plate in the valve body. However, there are still some deficiencies in the current gate valves when applied in dust collectors. The gate valve includes a push-pull type gate valve and a roller type gate valve. Among them, the push-pull type gate valve opens and closes the seal by pushing and pulling the gate plate between the sealing gaskets. This method has a high processing technology and cost, and the sealing performance is not good. The seal between the gate plate and the gasket mostly adopts horizontal pressing. After long-term use, the sealing gasket will be worn, the gap will become larger, and the phenomena of ash leakage and air leakage will occur, and secondary pressure sealing cannot be carried out, affecting the dust removal effect and the working environment. For the roller type gate valve, the valve plate uses rollers to move in the track of the valve body to achieve opening and closing sealing. The processing technology is complex, the processing cost is high, and after long-term operation, the rollers are prone to rust and jamming due to ash accumulation, resulting in the valve plate being unable to be opened and closed normally. In addition, to promote the falling of dust through the valve body into the ash hopper, the valve body is usually set as a slope structure with a certain taper and a certain height. Therefore, the overall volume of the valve body is large, squeezing the installation space of the ash hopper. At the same time, the long slope of the valve body is also likely to cause a small amount of dust to accumulate in the valve body. Summary of the Invention
[0003] The present invention is proposed to solve the use defects of the plug valve used in the existing dust collector, and provides a lifting type sealing valve for a dust collector.
[0004] To achieve the above object, the present invention adopts the following technical solutions: A lifting type sealing valve for a dust collector, comprising An outer housing, which is a sealed box body in a "hui" character structure formed by connecting and surrounding the front box shell, the rear box shell, the left box shell and the right box shell. The front box shell and the rear box shell are arranged opposite to each other, and the left box shell and the right box shell are arranged opposite to each other. A valve body accommodating cavity that penetrates up and down is formed in the center of the outer housing; A valve body assembly, including N valve monomers fixed in the valve body accommodating cavity. The N valve monomers are arranged in a front-back overall arrangement and divide the valve body accommodating cavity into M material discharging gaps, where N≥1 and M≥1; the top of the valve monomer is in a herringbone double-slope diversion slope structure, so as to make the dust material falling on the valve monomer slide down along the two-side slope structures into the adjacent material discharging gaps; A sealing assembly, used to control the opening / closing of the feeding gap by its own movement, includes M sealing units disposed below the valve body assembly. The M sealing units are arranged front to back and correspond one-to-one with the M feeding gaps. Each sealing unit includes a sealing top plate and a mounting groove. The sealing top plate is used to block and seal the feeding gap, and the mounting groove is disposed at the bottom of the sealing top plate. A control assembly for controlling the movement of the sealing assembly includes a control rod, lifting cams, and a handle. The front end of the control rod is installed inside the front housing, and the rear end is located outside the rear housing and has the handle installed thereon. The control rod extends in the front-rear direction and has M lifting cams fixedly installed on its body. The M lifting cams are arranged one-to-one in the mounting slots of the M sealing units, and all the lifting cams have the same posture and direction. The control assembly controls the front-rear movement of the sealing assembly by translating the control rod back and forth, and controls the up-and-down lifting of the sealing assembly by rotating the control rod around its own axis to drive the lifting cams to rotate. A limiting assembly for limiting the forward and backward translation and circumferential rotation of the control lever includes a front limiter and a rear limiter. The front limiter is installed in the front housing and limits the front end of the control lever, and the rear limiter is installed in the rear housing and limits the rear end of the control lever.
[0005] Preferably, the front limiter is a limiting pin fixed in the front housing, and the front side of the control rod is provided with an L-shaped limiting groove. The limiting pin is fitted into the L-shaped limiting groove. One side of the L-shaped limiting groove is parallel to the rotation direction of the control rod and is used to limit the circumferential rotation angle of the control rod. The other side of the L-shaped limiting groove is parallel to the forward and backward movement direction of the control rod and is used to limit the forward and backward movement distance of the control rod.
[0006] Preferably, the rear limiter includes telescopic limit rods disposed on the left and right inner side walls of the rear housing. When the control component drives the sealing component to move backward until the sealing unit and its corresponding feeding gap are completely misaligned, the sealing valve is fully opened, and the last sealing unit moves between the telescopic limit rods on both sides. The telescopic limit rods extend and abut against both sides of the last sealing unit to limit the sealing component.
[0007] Preferably, a sensing element is provided on the sealing unit located at the rear end, and a proximity switch is provided inside the rear housing. The proximity switch is electrically connected to the controller of the dust collector. When the sealing valve is fully open, the proximity switch detects the sensing element and sends a signal to the controller to control the extension limit rod to extend and limit the sealing assembly.
[0008] Preferably, the front housing, the rear housing, and the sealing unit are all provided with limit holes, and the control rod is installed through the limit holes. The limit holes are used to limit the control rod so that the control rod can only move forward and backward or rotate around its own axis.
[0009] Preferably, the limiting holes on both the front and rear housings are equipped with skeleton oil seals.
[0010] Preferably, the sealing top plate is a flat rectangular plate, and the bottom edge of the valve unit is provided with a brush, which is used to remove dust from the sealing plate when the sealing plate moves back and forth.
[0011] Preferably, the valve unit is provided with sealing strips on both sides of its bottom. After the M sealing units of the sealing assembly correspond one-to-one with the M material discharge gaps and are lifted, the sealing top plate squeezes the sealing strips on both sides of the corresponding material discharge gap to achieve sealing.
[0012] Preferably, along the front-to-back direction, the width of the valve unit is greater than the width of the sealing plate, and the width of the sealing plate is greater than the width of the material discharge gap.
[0013] Preferably, the bottom of the outer shell is provided with a dust hopper connecting ring around the outer side of the valve body receiving cavity, and a dust hopper locking member is provided on the side of the dust hopper connecting ring. The dust hopper for receiving and collecting dust is detachably and sealed on the dust hopper connecting ring through the dust hopper locking member.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The lifting sealing valve of the present invention replaces the traditional push-pull sealing structure of the slide gate valve with a lifting sealing structure, which can effectively prevent the sealing ring from being worn during the push-pull process, thereby making the valve sealing performance better. The sealing valve of the present invention has less switching resistance, is easier to operate, and has a longer service life. 2. The lifting sealing valve of the present invention is provided with multiple valve units, which divide the original large-sized discharge port into multiple small-sized discharge gaps, and work together with the sealing assembly. The multiple sealing units seal the multiple discharge gaps. In order to ensure smooth discharge, the slope length to width ratio of each discharge gap needs to be guaranteed. Therefore, after the width of the discharge gap is reduced, the slope length requirement of the valve unit is also greatly reduced, thereby significantly reducing the size of the entire sealing valve and saving more installation space. At the same time, the multiple small discharge gaps make the dust discharge smoother and less prone to accumulation. 3. The lifting sealing valve of the present invention is provided with multiple valve units to divide the valve body cavity into multiple small feeding gaps. When the valve needs to be fully opened or closed, it is only necessary to pull and move it in the front and back direction for a distance equal to the width of the feeding gap. The pulling and moving distance is short, and the operation is simple and labor-saving. Attached Figure Description
[0015] 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.
[0016] Figure 1 A three-dimensional structural diagram of a lift-type sealing valve for a dust collector; Figure 2 Another three-dimensional structural diagram of a lift-type sealing valve for a dust collector; Figure 3 A top view of the internal structure of a lift-type sealing valve for a dust collector in the open state; Figure 4 A top view of the internal structure of a lift-type sealing valve for a dust collector in the open state; Figure 5 A bottom view of the internal structure of a lift-type sealing valve for a dust collector in the open state; Figure 6 A bottom view of the internal structure of a lift-type sealing valve for a dust collector in the open state; Figure 7 This is an internal structural diagram of a lift-type sealing valve for a dust collector in its closed state, viewed from above. Figure 8 A top view of the internal structure of a lift-type sealing valve for a dust collector in the closed state; Figure 9 This is a bottom view of the internal structure of a lift-type sealing valve for a dust collector in its closed state. Figure 10 This is a bottom view of the internal structure of a lift-type sealing valve for a dust collector in its closed state.
[0017] The components include: outer shell 1, front box shell 11, rear box shell 12, left box shell 13, right box shell 14, valve body receiving cavity 15; valve body assembly 2, valve unit 21, material discharge gap 22; sealing assembly 3, sealing unit 31, sealing top plate 311, mounting groove 312; control assembly 4, control rod 41, lifting cam 42, handle 43, L-shaped limit groove 411; limit assembly 5, front limiter 51, rear limiter 52; sensing plate 6, proximity switch 7, limit hole 8, skeleton oil seal 9; ash hopper connecting ring 101, ash hopper locking part 102. Detailed Implementation
[0018] To further understand the purpose, structure, features and functions of the present invention, specific embodiments of the present invention will be described in detail in this part.
[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "length", "width", "thickness", "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0020] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.
[0021] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.
[0022] Please refer to Figures 1-10 , a lifting type sealing valve for a dust collector, which includes an outer shell 1, a valve body assembly 2, a sealing assembly 3, a control assembly 4 and a limiting assembly 5.
[0023] The outer shell 1 is a sealed box body with a "hui" character structure formed by connecting and surrounding the front box shell 11, the rear box shell 12, the left box shell 13 and the right box shell 14. The front box shell 11 and the rear box shell 12 are arranged opposite to each other, and the left box shell 13 and the right box shell 14 are arranged opposite to each other. A valve body accommodating cavity 15 that penetrates up and down is formed in the center of the outer shell 1. The outer shell 1 is composed of four hollow box shells. The inside of the box shell is used to accommodate and install other components, and at the same time, it can completely seal and isolate the internal components from the valve body accommodating cavity 15, preventing dust from entering the inside of the box shell from the valve body accommodating cavity 15, ensuring that there is no dust blockage between the components, and ensuring the smooth use of the lifting type sealing valve. Connecting components are provided on the outer shell 1, so that the upper part of the outer shell 1 is hermetically connected to the outlet of the dust collector, and the lower part is connected to the inlet of the sealed ash hopper 200. The upper end of the valve body accommodating cavity 15 can communicate with the dust collector, and the lower end can communicate with the ash hopper 200, so that dust can enter the lower ash hopper 200 from the dust collector through the valve body accommodating cavity 15.
[0024] The valve body assembly 2 includes N valve units 21 fixed in the valve body receiving cavity 15. The N valve units 21 are arranged front to back and divide the valve body receiving cavity 15 into M discharge gaps 22, where N≥1 and M≥1. The top of the valve unit 21 has a herringbone double-sloped guide ramp structure, which allows the dust falling on the valve unit 21 to slide down the ramp structure on both sides into the discharge gaps 22 on the side. The valve units 21 are fixedly installed in the receiving cavity, which can be fixed by welding, screw riveting, or other fixed connection methods. The dust in the dust collector flows downward along the ramp structure of the valve unit 21. If the valve is open, the discharge gaps 22 are open, and the dust falls from the discharge gaps 22 into the ash hopper 200 below; if the valve is closed, the discharge gaps 22 are sealed, and the dust accumulates in the valve body receiving cavity 15 and cannot fall. For example, if the front end of the first valve unit 21 has a feeding gap 22 and the rear end of the last valve unit 21 has no feeding gap 22, then M=N; if the front end of the first valve unit 21 has no feeding gap 22 and the rear end of the last valve unit 21 has a feeding gap 22, then M=N; if neither the front end of the first valve unit 21 nor the rear end of the last valve unit 21 has a feeding gap 22, then M=N-1.
[0025] The sealing assembly 3, which controls the opening / closing of the material discharge gap 22 by its own movement, includes M sealing units 31 disposed below the valve body assembly 2. The M sealing units 31 are arranged front to back and correspond one-to-one with the M material discharge gaps 22. Each sealing unit 31 includes a sealing top plate 311 and a mounting groove 312. The sealing top plate 311 is used to block and seal the material discharge gap 22, and the mounting groove 312 is disposed at the bottom of the sealing top plate 311.
[0026] The control component 4, used to control the movement of the sealing component 3, includes a control rod 41, a lifting cam 42, and a handle 43. The front end of the control rod 41 is installed inside the front housing 11, and the rear end is located outside the rear housing 12 and has the handle 43 installed thereon. The control rod 41 extends in the front-back direction and has M lifting cams 42 fixedly installed on its body. The M lifting cams 42 are arranged one-to-one in the mounting slots 312 of the M sealing units 31. The posture and direction of all the lifting cams 42 are completely consistent. The control component 4 controls the front-back movement of the sealing component 3 by translating the control rod 41 back and forth. The control component 4 controls the up-and-down lifting of the sealing component 3 by rotating the control rod 41 around its own axis to drive the lifting cams 42 to rotate.
[0027] The limiting assembly 5 is used to limit the forward and backward translation and circumferential rotation of the control lever 41. It includes a front limiter 51 and a rear limiter 52. The front limiter 51 is installed in the front housing 11 and limits the front end of the control lever 41. The rear limiter 52 is installed in the rear housing 12 and limits the rear end of the control lever 41.
[0028] In some embodiments, the opening process of the lifting sealing valve of the present invention is as follows: Hold and rotate the handle 43, causing the control rod 41 and the lifting cam 42 fixedly mounted on it to rotate synchronously. The rotation of the lifting cam 42 causes the sealing components 3 above it to move down synchronously, so that each sealing unit 31 moves downward and is no longer in a sealed state with its corresponding feeding gap 22. At this time, the sealing unit 31 is still located directly below its corresponding feeding gap 22. At this time, the limiting component 5 no longer limits the forward and backward movement of the control rod 41. Then, hold the handle 43 and pull it backward, causing the control rod 41 to move backward. The lifting cam 42 fixed on the control rod 41 causes the sealing unit 31 above it to move backward synchronously until the sealing unit 31 moves completely below the valve unit 21 on its side, so that the feeding gap 22 is fully opened. At this time, the valve body is in a fully open state. The limiting component 5 is activated and limits the control rod 41 again to prevent it from swaying left and right or moving forward and backward, so that it always remains in an open state.
[0029] In some embodiments, the closing process of the lifting sealing valve of the present invention is as follows: the limiting component 5 is opened, so that the movement of the control rod 41 is no longer restricted; the handle 43 is held and the control rod 41 is pushed forward, so that the lifting cam 42 on the control rod 41 drives the sealing component 3 to move forward synchronously until each sealing unit 31 moves directly below its corresponding feeding gap 22; then the handle 43 is held and the control rod 41 is rotated, which drives the lifting cam 42 on the control rod 41 to rotate. During the rotation of the lifting cam 42, the sealing unit 31 above it is lifted upward until the sealing unit 31 completely seals and blocks its corresponding feeding gap 22. At this time, the valve body is in a completely closed state, the limiting component 5 is activated and the control rod 41 is limited again to prevent it from swaying left and right or moving back and forth, so that it always remains in a closed state.
[0030] Rotating the control lever 41 can drive the lifting cam 42 to rotate, thereby causing the sealing assembly 3 to move up and down. Moving the control lever 41 back and forth can drive the lifting cam 42 and the sealing assembly 3 on it to move back and forth. During the opening or closing process of the above-mentioned lifting sealing valve, the rotation direction and the back and forth movement direction are operated according to the actual situation. For example, in the above description of the opening / closing process of the lifting sealing valve, when the sealing assembly 3 is opened, it moves behind its corresponding feeding gap 22. Alternatively, it can be made to move in front of its corresponding feeding gap 22 when the sealing assembly 3 is opened, and the opposite operation is performed when it is closed.
[0031] The lifting sealing valve of the present invention achieves valve body sealing and closure by the sealing component 3 pressing and blocking the material discharge gap 22 through up-and-down lifting and pressing. Compared with the push-pull sealing gate valve in the prior art, this structure will not cause wear to the sealing structure, and can effectively ensure the sealing performance of the valve body even after long-term use. In addition, when the valve body is opened and closed, the control rod 41 is pulled out, and the sealing component 3 is always in a lowered state and does not contact the valve body component 2. Therefore, compared with the traditional gate valve which requires friction of the sealing ring for pulling, the sealing valve of the present invention has less opening and closing resistance and is easier to operate.
[0032] The lifting sealing valve of the present invention has a valve body assembly 2 with multiple valve units 21 forming multiple discharge gaps 22. To facilitate the downward flow of dust from the herringbone double-sloped guide ramps of the valve units 21 and prevent dust accumulation on the valve units 21, the slope angle of the ramps and the width-to-depth ratio of the discharge gaps 22 must meet a preset range. However, the present invention increases the number of valve units 21, dividing a single discharge port into multiple discharge gaps 22. The width of each discharge gap 22 is significantly reduced. Therefore, while maintaining the same downward slope angle, to achieve the preset width-to-depth ratio, the depth requirement of the discharge gaps 22 is also significantly reduced. This means the vertical slope length requirement of the valve units 21 is greatly reduced, resulting in a significant reduction in the overall valve body size. Furthermore, the structure of multiple valve units 21 forming multiple smaller discharge gaps 22 in the present invention, compared to the traditional large-size discharge port structure, makes the discharge smoother and less prone to accumulation.
[0033] The lifting sealing valve of the present invention is provided with multiple valve units 21 to divide the valve body receiving cavity 15 into multiple small feeding gaps 22. With this structure, when the valve needs to be fully opened or closed, it is only necessary to pull and move it in the front and back direction for a distance of the width of the feeding gap 22. The pulling and moving distance is short, and the operation is simple and labor-saving.
[0034] In some embodiments, the front limiter 51 is a limit pin fixed in the front housing 11. The front side of the control rod 41 is provided with an L-shaped limit groove 411. The limit pin is installed in the L-shaped limit groove 411. One side of the L-shaped limit groove 411 is parallel to the rotation direction of the control rod 41 and is used to limit the circumferential rotation angle of the control rod 41. The other side of the L-shaped limit groove 411 is parallel to the forward and backward movement direction of the control rod 41 and is used to limit the forward and backward movement distance of the control rod 41. When the control rod 41 is rotated by the handle 43, the horizontal short groove of the L-shaped limit groove 411 cooperates with the limit pin to limit the rotation angle of the control rod 41. When the control rod 41 is moved forward and backward by the handle 43, the vertical long groove of the L-shaped limit groove 411 cooperates with the limit pin to limit the forward and backward movement distance of the control rod 41. In particular, the backward movement length is limited to avoid excessive pulling distance, which would cause the sealing assembly 3 to move excessively and block the sealing gap. When the control lever 41 moves forward to the end and rotates to the end of the short groove of the L-shaped limiting groove 411, the valve can always be kept closed without external force rotation. This prevents the valve from vibrating under the influence of external dust removal equipment or other connected equipment during use, which could cause the control lever 41 to vibrate the sealing assembly 3, leading to displacement of the sealing assembly 3 and valve leakage.
[0035] In some embodiments, the rear limiter 52 includes telescopic limit rods disposed on the left and right inner side walls of the rear housing. When the control component 4 drives the sealing component 3 to move backward until the sealing unit 31 and its corresponding discharge gap 22 are completely misaligned, the sealing valve is fully opened. The last sealing unit 31 moves between the telescopic limit rods on both sides, and the telescopic limit rods extend and abut against both sides of the last sealing unit 31, limiting the sealing component 3. The rear limiter 52 is used to limit the control rod 41 after the sealing valve is opened, to prevent the valve from vibrating under the action of external dust collectors or other connected equipment, causing the control rod 41 to vibrate and the sealing component 3 to oscillate, thereby causing the sealing component 3 to shift and the valve to be in a half-open state, affecting the discharge volume of the valve.
[0036] In a further embodiment, a sensing element 6 is provided on the sealing unit 31 at the rear end, and a proximity switch 7 is provided inside the rear housing 12. The proximity switch 7 is electrically connected to the dust collector controller. When the sealing valve is fully open, the proximity switch 7 detects the sensing element 6 and sends a signal to the controller, controlling the extension limit rod to extend and limit the sealing assembly 3. The sensing element 6 can be a sheet structure made of ordinary material. Its main function is to move synchronously with the sealing unit 31 at the rear end. It works in conjunction with the proximity switch 7 so that the proximity switch 7 can detect whether the sealing assembly 3 has reached the designated position when the valve is fully open, thereby controlling the action of the rear limiter 52. This allows the rear limiter 52 to automatically and forcibly limit the control rod 41 when the valve is fully open, preventing the control rod 41 and the sealing assembly 3 on it from shaking and shifting during operation, which would cause the valve to change from a fully open state to a half-open state. This ensures that the valve is always fully open and maintains the best working efficiency.
[0037] In some embodiments, limit holes 8 are provided on the front housing 11, the rear housing 12, and the sealing unit 31. The control rod 41 is installed through the limit holes 8. The limit holes 8 are used to limit the control rod 41 so that the control rod 41 can only move back and forth or rotate around its own axis. The control rod 41 is effectively limited, and the sealing assembly 3 on it can also be well limited during movement to maintain its stability and prevent the sealing assembly 3 from tilting and ensuring a rigid seal.
[0038] In some embodiments, the limiting holes 8 on the front housing 11 and the rear housing 12 are provided with skeleton oil seals 9 to ensure that the sealing to the inside and outside can still be guaranteed after the limiting holes 8 are opened on the front housing 11 and the rear housing 12.
[0039] In some embodiments, the sealing top plate 311 is a flat rectangular plate, and the bottom edge of the valve unit 21 is provided with a brush. The brush is used to remove dust from the sealing plate when the sealing plate moves back and forth. The brush can be a common small soft brush used for cleaning dust, and can be installed in a detachable manner, such as a snap-fit connection. The brush can be removed for cleaning or replacement at regular intervals to ensure that the brush can clean the dust on the sealing assembly 3, so that the corresponding material discharge gap 22 can be completely sealed after the sealing area is lifted.
[0040] In some embodiments, sealing strips are provided on both sides of the bottom of the valve unit 21. After the M sealing units 31 of the sealing assembly 3 are aligned with the M discharge gaps 22 and lifted, the sealing top plate 311 presses the sealing strips on both sides of the corresponding discharge gap 22 to achieve a seal. The sealing strips can be made of silicone or rubber and are mainly sealed by the compression of the sealing units 31. They can be installed on the bottom of the valve unit 21 by means of bonding, riveting, snap-fitting, etc. In addition to providing sealing strips on both sides of the bottom of the valve unit 21, sealing strips can also be installed around the bottom of the valve unit 21 to achieve a more comprehensive seal.
[0041] In some embodiments, the width of the valve unit 21 is greater than the width of the sealing plate in the front-back direction, ensuring that the sealing unit 31 can be completely located below the valve unit 21 and completely covered after the control rod 41 moves backward, thus fully opening the material discharge gap 22; the width of the sealing plate is greater than the width of the material discharge gap 22, ensuring that the sealing plate on the sealing unit 31 can completely block the material discharge gap 22 and achieve a seal.
[0042] In some embodiments, a dust hopper connecting ring 101 is provided around the bottom of the outer casing 1 on the outer side of the valve body receiving cavity 15, and a dust hopper locking member 102 is provided on the side of the dust hopper connecting ring 101. The dust hopper 200 for receiving and collecting dust is detachably and sealed on the dust hopper connecting ring 101 by the dust hopper locking member 102.
[0043] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0044] The present invention has been described in the above-described embodiments. However, the above embodiments are merely examples for implementing the present invention and are used to help understand the technical solutions and core ideas of this application. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention; on the contrary, the technical solutions described in the foregoing embodiments can still be modified, or some of the technical features can be equivalently replaced; any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.
Claims
1. A lifting-type sealing valve for a dust collector, characterized in that, Comprising: An outer housing, which is a sealed box body in a "return" - shaped structure formed by connecting and surrounding a front box shell, a rear box shell, a left box shell, and a right box shell. The front box shell and the rear box shell are arranged opposite to each other, and the left box shell and the right box shell are arranged opposite to each other. A valve body accommodating cavity that penetrates up and down is formed in the center of the outer housing; A valve body assembly, including N valve monomers fixed in the valve body accommodating cavity. The N valve monomers are arranged in a front - to - back overall arrangement and divide the valve body accommodating cavity into M blanking gaps, where N≥1 and M≥1. The top of the valve monomer has a herringbone double - slope diversion ramp structure to make the dust material falling on the valve monomer slide down along the two - side slope structures into the adjacent blanking gaps; A sealing assembly, used to control the opening / closing of the blanking gap through its own movement, including M sealing monomers arranged in a front - to - back overall arrangement below the valve body assembly, and the M sealing monomers correspond to the M blanking gaps one by one. The sealing monomer includes a sealing top plate and an installation groove. The sealing top plate is used to block and seal the blanking gap, and the installation groove is arranged at the bottom of the sealing top plate; A control assembly, used to control the movement of the sealing assembly, including a control rod, a jacking cam, and a handle. The front end of the control rod is installed in the front box shell, the rear end is located outside the rear box shell and installs the handle. The control rod extends in the front - to - back direction, and M jacking cams are fixedly installed on the rod body. The M jacking cams are arranged in the installation grooves of the M sealing monomers one by one, and the postures and directions of all the jacking cams are exactly the same. The control assembly controls the front - to - back movement of the sealing assembly by moving the control rod back and forth, and controls the up - and - down jacking of the sealing assembly by rotating the control rod around its own axis to drive the jacking cam to rotate; A limiting assembly, used to limit the front - to - back translation and circumferential rotation of the control rod, including a front - end limiter and a rear - end limiter. The front - end limiter is installed in the front box shell and limits the front end of the control rod, and the rear - end limiter is installed in the rear box shell and limits the rear end of the control rod.
2. The lifting-type sealing valve for a dust collector as described in claim 1, characterized in that: The front - end limiter is a limit pin fixed in the front box shell. An L - shaped limit groove is provided on the side surface of the front end of the control rod. The limit pin is fitted and installed in the L - shaped limit groove. One side of the L - shaped limit groove is parallel to the rotation direction of the control rod and is used to limit the circumferential rotation angle of the control rod, and the other side of the L - shaped limit groove is parallel to the front - to - back movement direction of the control rod and is used to limit the front - to - back movement distance of the control rod.
3. The lifting-type sealing valve for a dust collector as described in claim 1, characterized in that: The rear - end limiter includes telescopic limit rods arranged on the left and right inner side walls of the rear box body. When the control assembly drives the sealing assembly to translate backward until the sealing monomer is completely错开 from its corresponding blanking gap, the sealing valve is completely opened. The last sealing monomer moves between the two telescopic limit rods on both sides, and the telescopic limit rods extend out and abut against both sides of the last sealing monomer to limit the sealing assembly.
4. The lifting-type sealing valve for a dust collector as described in claim 3, characterized in that: A sensing element is provided on the sealing unit located at the rear end, and a proximity switch is provided inside the rear housing. The proximity switch is electrically connected to the dust collector controller. When the sealing valve is fully open, the proximity switch detects the sensing element and sends a signal to the controller to control the extension limit rod to extend and limit the sealing assembly.
5. The lifting-type sealing valve for a dust collector as described in claim 1, characterized in that: Limiting holes are provided on the front housing, the rear housing, and the sealing unit. The control rod is installed through the limiting hole. The limiting hole is used to limit the control rod so that the control rod can only move forward and backward or rotate around its own axis.
6. The lift-type sealing valve for a dust collector as described in claim 5, characterized in that: Both the front and rear housings are equipped with skeleton oil seals in their limiting holes.
7. The lifting-type sealing valve for a dust collector as described in claim 1, characterized in that: The sealing top plate is a flat rectangular plate, and the bottom edge of the valve unit is provided with a brush, which is used to remove dust from the sealing plate when the sealing plate moves back and forth.
8. The lifting-type sealing valve for a dust collector as described in claim 1, characterized in that: The valve unit has sealing strips on both sides of its bottom. The M sealing units of the sealing assembly correspond one-to-one with the M material discharge gaps and are lifted up. The sealing top plate then presses the sealing strips on both sides of the corresponding material discharge gap to achieve a seal.
9. The lifting-type sealing valve for a dust collector as described in claim 1, characterized in that: Along the front-to-back direction, the width of the valve unit is greater than the width of the sealing plate, and the width of the sealing plate is greater than the width of the material discharge gap.
10. The lift-type sealing valve for a dust collector as described in claim 1, characterized in that: The bottom of the outer shell is provided with a dust hopper connecting ring around the outer side of the valve body receiving cavity. A dust hopper locking member is provided on the side of the dust hopper connecting ring. The dust hopper for receiving dust is detachably and sealed on the dust hopper connecting ring through the dust hopper locking member.