Blanket type filtering device

Abstract

The invention discloses a blanket type filtering device, and relates to the field of automobile manufacturing, the blanket type filtering device comprises a fixing plate fixed in an air duct along the vertical direction, a pressing plate is arranged on the side surface of the fixing plate in parallel, the pressing plate is arranged on the air inlet side, and a limiting cavity for limiting the position of a filtering blanket is formed between the fixing plate and the pressing plate; pressing devices are uniformly arranged at the edge positions of the fixing plate and the pressing plate; a first reversing roller and a second guide roller are arranged in the unwinding mechanism and the winding mechanism, it is ensured that the filtering blanket is kept flat when passing through the blanket material guide-in hole and the blanket material penetrating-out hole, deviation or wrinkling or jamming is avoided, and therefore the installation precision, the filtering effect and the winding flatness of the filtering blanket are improved; through the design of the tension adjusting mechanism and the dynamic balance function of the tension roller and the tension spring, the tension of the filter blanket is adjusted in real time, the tension fluctuation is buffered, the filter blanket is prevented from being loosened or wrinkled, the uniformity and the filter effect of a filter medium are ensured, and meanwhile, the operation reliability and the maintenance efficiency of the system are improved.

Description

Technical Field

[0001] The invention relates to the field of automobile manufacturing, in particular to a blanket-type filtering device. Background Art

[0002] In recent years, my country's coating production line equipment technology and market have developed rapidly, the types of spraying equipment have increased rapidly, the appearance and process requirements of products have become more and more stringent, and the corresponding filtering equipment applications have become more and more modern. Since the filter felt can block the particles, dust and fine hair that pass through for a certain period of time, ensuring that clean air passes through the back end, and can achieve fast replacement of the filter felt cloth when it is unqualified, and it is easy to control, it is widely used in modern workpiece spraying production lines, and the demand is gradually increasing.

[0003] On the spraying production line, the workpiece is often required to be painted, leveled and dried inside the line. That is, the sprayed workpiece needs to be sprayed inside the line first, and then leveled for a period of time, and then enter the drying room to dry the paint. Spraying has very strict requirements on the environment, and the cleanliness, temperature and humidity of the entire spraying space need to be guaranteed. In order to achieve the cleanliness requirements of the entire operating space, the air quality is generally processed in the front stage, and the particles, dust and fine hair in the air need to be processed through a filter. The commonly used filters are bag filters, which are expensive and have high maintenance costs in the later stage. Summary of the invention

[0004] The purpose of the present invention is to provide a blanket-type filtering device for solving the problem that the commonly used filters in the prior art are bag filters, which have high costs and high subsequent maintenance costs.

[0005] The technical solution adopted by the present invention is as follows: a blanket-type filter device, comprising a fixing plate fixed in an air duct along a vertical direction, a pressure plate is arranged in parallel on the side of the fixing plate, the pressure plate is arranged on the air inlet side, a limiting cavity for limiting the position of the filter blanket is formed between the fixing plate and the pressure plate, and clamping devices are evenly arranged at the edge positions of the fixing plate and the pressure plate, a reeling mechanism for reeling in unused filter blankets is arranged above the air duct, and a reeling mechanism for storing used filter blankets is arranged below the air duct, and protective shells are arranged on the outer sides of the reeling mechanism and the reeling mechanism, and the air duct is provided with a blanket material introduction hole and a blanket material outlet hole for the filter blanket to pass through on the upper and lower sides of the filter cavity respectively;

[0006] A four-bar mechanism for pulling the pressing plate and the fixing plate apart is installed on one side of the pressing plate away from the fixing plate, and the four-bar mechanism is connected to the tensioning mechanism.

[0007] Furthermore, the winding mechanism includes a winding roller and the filter blanket in the limiting cavity passes through the blanket outlet hole, passes under the second guide roller and is wound on the winding roller, and the edge of the second guide roller is tangent to the edge of the blanket outlet hole close to the winding roller.

[0008] Furthermore, a tension adjustment mechanism is provided between the unwinding roller and the first reversing roller;

[0009] The tension adjustment mechanism includes an n-type frame, a guide rotating block, a tension roller and a tension spring. The n-type frames are arranged in parallel, the guide rotating blocks are slidably arranged between the wing plates of the n-type frames, the tension spring is arranged between the guide rotating block and the web of the n-type frame, the tension roller is arranged between the guide rotating blocks, and the filter blanket passes under the tension roller.

[0010] Furthermore, an observation window is installed on the outer wall of the protective shell, and an illumination lamp is arranged inside the protective shell.

[0011] Furthermore, the unwinding mechanism includes an unwinding roller and a first reversing roller. The filter blanket on the unwinding roller passes over the first reversing roller and enters the limiting cavity from the blanket material inlet hole. The edge of the first reversing roller is tangent to the edge of the blanket material inlet hole close to the unwinding roller.

[0012] Furthermore, the four-bar mechanism includes a tension spring, a rocker, a transition rod, a sliding rod, a sliding support seat and a connecting plate. The sliding support seat is symmetrically arranged on both sides of the air duct. A sliding rod is slidably arranged in the sliding support seat. One end of the sliding rod is connected to the pressure plate through a connecting plate. The air duct is provided with a movable hole for the connecting plate to pass through.

[0013] Furthermore, an outer protective shell is arranged outside the air duct and the protective shell, and the outer protective shell is also provided with the outer observation window at a corresponding position of the observation window.

[0014] Furthermore, the tensioning mechanism includes a tensioning rope winding roller, a tensioning roller shaft, a tensioning rope and a tensioning rope reversing roller. The tensioning roller shaft is installed between the inner walls of the protective shell, and the two ends of the tensioning roller shaft pass through the protective shell and then the tensioning rope winding roller is installed. One end of the tensioning roller shaft passes through the outer protective shell and then a ratchet is installed. A pawl engaged with the ratchet is installed on the outer wall of the outer protective shell. The tensioning rope is wound on the tensioning rope winding roller, and the tensioning rope reversing roller is installed on the swinging track of the lower end of the rocker. The end of the tensioning rope away from the tensioning rope winding roller passes over the tensioning rope reversing roller and is fixed to the rocker.

[0015] Furthermore, the clamping device includes a guide rod, a fixing cap and a clamping spring, one end of the guide rod is fixed to the fixing plate, and the other end passes through the pressing plate and is installed with the fixing cap, and a clamping spring is arranged between the fixing cap and the pressing plate.

[0016] Furthermore, a plurality of sealing sheets are arranged on one side of the movable hole close to the sliding support seat, one end of the sealing sheet is fixed at the opening of the movable hole, and a magnet is arranged on the other end of the sealing sheet.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The present invention ensures that the filter blanket remains flat when passing through the blanket material inlet hole and the blanket material outlet hole, avoids deviation, wrinkles or jamming, thereby improving the installation accuracy, filtering effect and winding flatness of the filter blanket; through the design of the tension adjustment mechanism, the dynamic balance function of the tension roller and the tension spring is utilized to adjust the tension of the filter blanket in real time, buffer the tension fluctuation, avoid the filter blanket from loosening or wrinkling, ensure the uniformity and filtering effect of the filter medium, and improve the reliability of system operation and maintenance efficiency;

[0019] 2. The present invention ensures that the filter blanket remains flat during the introduction and withdrawal process, avoids deviation, wrinkles or jamming, thereby improving the installation accuracy, filtering effect and winding flatness of the filter blanket; through the design of the tension adjustment mechanism, the dynamic balance function of the tension roller and the tension spring is utilized to adjust the tension of the filter blanket in real time, buffer the tension fluctuation, avoid relaxation or wrinkling, ensure the uniformity of the filter medium and the filtering effect, thereby improving the reliability of the system operation;

[0020] 3. The present invention adopts the design of a four-bar mechanism and utilizes the linkage structure of a tension spring, a rocker, a transition rod, a sliding rod and a sliding support seat. Under the drive of the tensioning mechanism, the pressure plate is moved toward the outer side of the air inlet side, thereby separating the fixed plate and the pressure plate, avoiding the filter blanket from being restricted by the fixed plate and the pressure plate during the winding process, and ensuring smooth replacement of the filter blanket; at the same time, the sealing sheet and the magnetic attraction design provided at the movable hole can avoid leakage of air in the air duct from the movable hole, and the movement of the connecting plate is not affected while ensuring the sealing, thereby further improving the reliability of the system operation and the filtering efficiency.

[0021] 4. The present invention realizes winding and tightening of the tension rope by designing the tension mechanism and utilizing the linkage structure of the tension rope winding roller, the tension roller shaft, the tension rope and the tension rope reversing roller, and drives the rocker to swing away from the air inlet side, thereby completing the linkage action with the four-bar mechanism; at the same time, through the cooperation of the ratchet and the pawl, the position of the rocker can be temporarily fixed after the filter blanket is replaced, ensuring the operational stability; when resetting is required, the pawl is controlled to separate from the ratchet, the tension rope winding roller is unwound, and the rocker is reset under the action of the tension spring, completing the resetting action of the four-bar mechanism, so that the fixed plate and the pressure plate re-fix the filter blanket, realizing the efficient replacement of the filter blanket and the safe and reliable operation of the system;

[0022] 5. The present invention adopts the design of the clamping device and utilizes the structure of the guide rod, the fixing cap and the clamping spring so that the clamping spring pushes the clamping plate in the direction of the fixing plate, ensuring that the clamping plate and the fixing plate can fit tightly together, thereby reliably fixing the filter blanket and avoiding air leakage from the edge, ensuring that all air is filtered through the filter blanket, and improving the filtration efficiency; at the same time, the elastic design of the clamping device can adapt to slight changes in the thickness of the filter blanket, ensuring the stability and sealing of the system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure after the four-bar mechanism in the present invention is in action;

[0025] Figure 3 It is a schematic diagram of the internal structure of the present invention from the right side;

[0026] Figure 4 It is a front view of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the four-bar mechanism in the present invention;

[0028] Figure 6 It is a structural schematic diagram of the tension adjustment mechanism in the present invention;

[0029] Figure 7 yes Figure 1 A partial enlarged view of point A in the middle;

[0030] Figure 8 yes Figure 3 A magnified partial view of point B in the middle.

[0031] Description of reference numerals:

[0032] 1. Air duct; 2. Protective shell; 3. Unwinding mechanism; 31. Unwinding roller; 33. First reversing roller; 4. Tension adjusting mechanism; 41. N-type frame; 42. Guide rotating block; 43. Tension roller; 44. Tension spring; 5. Fixed plate; 6. Rewinding mechanism; 61. Rewinding roller; 63. Second guide roller; 7. Tensioning mechanism; 71. Tension rope rewinding roller; 72. Tensioning roller shaft; 73. Tensioning rope; 74. Tension rope reversing roller; 8. Four-bar mechanism; 81. Tension spring; 82. Rocker; 83. Transition rod; 84. Sliding rod; 85. Sliding support seat; 86. Connecting plate; 9. Clamping device; 91. Guide rod; 92. Fixed cap; 93. Clamping spring; 10. Pressing plate; 101. Outer protective shell; 102. Observation window; 103. Filter blanket; 104. Outer observation window. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] Figure 1-Figure 8 As shown: a blanket type filtering device, including a fixing plate 5 fixed in the air duct 1 along the vertical direction, a pressing plate 10 is arranged parallel to the side of the fixing plate 5, and the pressing plate 10 is arranged on the air inlet side. A limiting cavity for limiting the position of the filter blanket 103 is formed between the fixing plate 5 and the pressing plate 10. The edges of the fixing plate 5 and the pressing plate 10 are evenly provided with clamping devices 9 for fixing the positions of the two. A reeling mechanism 3 for reeling in an unused filter blanket is arranged above the air duct 1, and a reeling mechanism 6 for storing a used filter blanket is arranged below the air duct 1. In order to prevent the unused filter blanket from being contaminated and the used filter blanket from contaminating the outside air, a protective shell 2 is arranged on the outside of the reeling mechanism 3 and the reeling mechanism 6. The air duct 1 is provided with a blanket material introduction hole and a blanket material outlet hole for the filter blanket 103 to pass through on the upper and lower sides of the filter cavity.

[0040] After the outside air enters the air duct 1, it enters from between the pressure plates 10 on the air inlet side, passes through the filter blanket 103, and then flows out from between the fixed plates 5 on the air outlet side. The clamping device 9 pulls the filter blanket 103 toward the filter blanket 103 so that the edges of the two fit tightly together to prevent air leakage from the edges and ensure that all air must pass through 130 for filtration.

[0041] As the filter blanket 103 is used, pollutants such as dust, particulate matter, and oil mist in the air will gradually be intercepted by the filter blanket 103 and accumulated on its surface or inside. The accumulated pollutants will increase the airflow resistance of the filter blanket 103, making air circulation difficult. The fan needs more power to maintain normal air volume, thereby increasing energy consumption. When too much dust accumulates on the filter blanket 103, some pollutants may penetrate the filter blanket 103 and enter the downstream system, resulting in a decrease in filtration efficiency. Therefore, the filter blanket 103 needs to be replaced regularly.

[0042] When the filter blanket 103 is replaced, the winding mechanism 6 is driven to wind up the filter blanket 103. The filter blanket 103 wound on the unwinding mechanism 3 is passively released under the action of the winding mechanism 6, and enters between the fixed plate 5 and the pressing plate 10, replacing the filter blanket 103 that has been used between the fixed plate 5 and the pressing plate 10. The filter blanket 103 that has been used between the fixed plate 5 and the pressing plate 10 is wound onto the winding mechanism 6.

[0043] When the winding mechanism 6 is driven to wind up the filter blanket 103 , the clamping device 9 pulls the fixing plate 5 and the pressing plate 10 toward the filter blanket 103 . Therefore, when the filter blanket 103 is wound up, the fixing plate 5 and the pressing plate 10 also need to be separated.

[0044] Therefore, a four-bar mechanism 8 for pulling the pressing plate 10 and the fixing plate 5 apart is installed on the side of the pressing plate 10 away from the fixing plate 5. The four-bar mechanism 8 is connected to the tensioning mechanism 7. When the tensioning mechanism 7 is actuated, the four-bar mechanism 8 is driven to actuate, thereby realizing the linkage between the two.

[0045] By setting a sealing structure formed by the fixing plate 5, the clamping device 9 and the pressing plate 10, it is ensured that the air can only be filtered through the filter blanket 103, avoiding air leakage and improving the filtering efficiency; by the linkage design of the winding mechanism 6 and the unwinding mechanism 3, the automatic replacement of the filter blanket 103 is realized, reducing manual operation, and can efficiently complete the filtration and replacement of the filter blanket; by setting the protective shell 2, the unused filter blanket is prevented from being contaminated and the used filter blanket is prevented from polluting the outside air, ensuring the environmental protection of the system; at the same time, by the linkage design of the tensioning mechanism 7 and the four-bar mechanism 8, the replacement process of the filter blanket 103 is simplified, and by the sealing design, the automatic replacement mechanism, the pollution protection measures and the linkage separation, the filtering efficiency is significantly improved, the equipment life is extended, and the manual operation and maintenance costs are reduced.

[0046] In order to facilitate observation of the use of the filter blanket 103 and whether the used filter blanket 103 is wound in place, an observation window 102 is installed on the outer wall of the protective shell 2. The observation windows 102 are respectively arranged above the blanket material inlet hole and below the blanket material outlet hole. At the same time, for the convenience of observation, an illumination lamp is arranged in the protective shell 2.

[0047] Example 2

[0048] The difference between this embodiment and embodiment 1 is that the unwinding mechanism 3 includes an unwinding roller 31 and a first reversing roller 33. The filter blanket 103 on the unwinding roller 31 passes over the first reversing roller 33 and then enters the limiting cavity from the blanket material introduction hole. The edge of the first reversing roller 33 is tangent to the edge of the blanket material introduction hole on the side close to the unwinding roller 31, ensuring that the filter blanket 103 can enter the limiting cavity in the vertical direction, avoiding the filter blanket 103 from being offset or wrinkled during the introduction process, thereby ensuring the installation accuracy and filtering effect of the filter blanket 103.

[0049] The winding mechanism 6 includes winding rollers 61 and 66. The filter blanket 103 in the limiting cavity comes out of the blanket material outlet hole, passes under the second guide roller 63, and is wound on the winding roller 61. The edge of the second guide roller 63 is tangent to the edge of the blanket material outlet hole on the side close to the winding roller 61, which can effectively guide the filter blanket 103 to pass smoothly and avoid deviation, wrinkles or jamming during the passing and bypassing process, thereby ensuring the winding flatness of the filter blanket and the smooth replacement process, and improving the reliability of the system operation and maintenance efficiency. The input shaft of the winding roller 61 is driven by a motor.

[0050] During the operation of the unwinding mechanism 3 and the rewinding mechanism 6, if the tension is too small, the filter blanket 103 will become loose during the transmission process. As a flexible material, the filter blanket 103 cannot remain flat in a relaxed state and is prone to wrinkling. After wrinkling, the surface of the filter blanket 103 is uneven, and wrinkles may accumulate in some areas, affecting the uniformity of the filter medium and resulting in poor filtering effect. Therefore, a tension adjustment mechanism 4 is provided between the unwinding roller 31 and the first reversing roller 33 to control the tension of the filter blanket 103.

[0051] The tension adjustment mechanism 4 includes an n-type frame 41, a guide rotating block 42, a tension roller 43 and a tension spring 44. The n-type frame 41 is arranged in parallel, the guide rotating block 42 is slidably arranged between the wing plates of the n-type frame 41, the tension spring 44 is arranged between the guide rotating block 42 and the web of the n-type frame 41, the tension roller 43 is arranged between the guide rotating blocks 42, and the filter blanket 103 passes under the tension roller 43.

[0052] When the tension of the filter blanket 103 is stable, the tension roller 43 is in a balanced position, and the elastic force of the tension spring 44 is balanced with the tension of the filter blanket 103. At this time, the material passes smoothly on the surface of the floating roller, and the tension remains constant.

[0053] When the tension of the filter blanket 103 suddenly increases, the filter blanket 103 will exert a greater upward thrust on the tension roller 43. The tension roller 43 moves upward under the action of the tension of the filter blanket 103, compressing the tension spring 44. After being compressed, the tension spring 44 generates a greater reaction force, trying to push the tension roller 43 back to its original position, thereby buffering the increase in the tension of the filter blanket 103.

[0054] When the tension of the filter blanket 103 suddenly decreases, the pushing force of the filter blanket 103 on the tension roller 43 decreases, and the elastic force of the tension spring 44 pushes the tension roller 43 downward to tighten the filter blanket 103 and compensate for the lack of tension. The downward displacement of the tension roller 43 causes the filter blanket 103 to be tightened again to prevent the filter blanket 103 from loosening or wrinkling.

[0055] The tension spring 44 can quickly respond to changes in the tension of the filter blanket 103 , adjust the position of the tension roller 43 in real time, buffer tension fluctuations, and prevent the filter blanket 103 from loosening or wrinkling.

[0056] By arranging the first reversing roller 33 and the second guide roller 63 in the unwinding mechanism 3 and the rewinding mechanism 6, it is ensured that the filter blanket 103 remains flat when passing through the blanket material inlet hole and the blanket material outlet hole, avoiding deviation, wrinkles or jamming, thereby improving the installation accuracy, filtering effect and winding flatness of the filter blanket 103; through the design of the tension adjustment mechanism 4, the dynamic balancing function of the tension roller 43 and the tension spring 44 is utilized to adjust the tension of the filter blanket 103 in real time, buffer the tension fluctuation, avoid the filter blanket 103 from loosening or wrinkling, ensure the uniformity and filtering effect of the filter medium, and at the same time improve the reliability of the system operation and the maintenance efficiency.

[0057] Example 3

[0058] The difference between this embodiment and embodiment 1 is that the four-bar mechanism 8 includes a tension spring 81, a rocker 82, a transition rod 83, a slide bar 84, a sliding support seat 85 and a connecting plate 86. The sliding support seat 85 is symmetrically arranged on both sides of the air duct 1. The slide bar 84 is slidably arranged in the sliding support seat 85. One end of the slide bar 84 is connected to the pressure plate 10 through the connecting plate 86. A movable hole for the connecting plate 86 to pass through is opened on the air duct 1. A plurality of sealing sheets are arranged on the side of the movable hole close to the sliding support seat 85. One end of the sealing sheet is fixed at the orifice of the movable hole, and the other end is provided with a magnet, so that the other ends of the sealing sheets are attracted to each other under the action of magnetic force, thereby achieving a sealing effect to prevent the air in the air duct 1 from leaking from the movable hole. At the same time, when the sliding support seat 85 drives the pressure plate 10 to move through the connecting plate 86, the connecting plate 86 squeezes the sealing sheet open and does not affect the movement of the connecting plate 86.

[0059] One end of the sliding rod 84 away from the sliding support seat 85 is hinged to the transition rod 83, and the other end of the transition rod 83 away from the sliding rod 84 is hinged to the rocker 82. The rocker 82 is connected to the outer wall of the air duct 1 through a pin shaft. A tension spring 81 is set at the lower end of the rocker 82. The tension spring 81 is set on the side of the rocker 82 close to the air inlet side, and the lower end of the rocker 82 is connected to the tensioning mechanism 7 on the side away from the air inlet side.

[0060] The lower end of the rocker arm 82 is driven by the tensioning mechanism 7 to swing in a direction away from the air inlet side, while the upper end thereof is driven to swing in a direction close to the air inlet side. During the swinging process, the sliding rod 84 is pulled by the transition rod 83, so that the pressure plate 10 can be pulled to move outward close to the air inlet side through the connecting plate 86, and at the same time, the tension spring 81 is stretched, so that the fixing plate 5 and the pressure plate 10 are separated, so that when the filter blanket 103 is wound, the filter blanket 103 will not be restricted by the fixing plate 5 and the pressure plate 10.

[0061] Through the design of the four-bar mechanism 8, using the linkage structure of the tension spring 81, the rocker 82, the transition rod 83, the slide bar 84 and the sliding support seat 85, under the drive of the tensioning mechanism 7, the pressure plate 10 is moved toward the outer side of the air inlet side, so that the fixed plate 5 and the pressure plate 10 are separated, and the filter blanket 103 is prevented from being restricted by the fixed plate 5 and the pressure plate 10 during the winding process, ensuring smooth replacement of the filter blanket 103; at the same time, through the sealing sheet and the magnetic attraction design set at the movable hole, the air in the air duct 1 is prevented from leaking from the movable hole, and the movement of the connecting plate 86 is not affected while ensuring the sealing, thereby further improving the reliability of the system operation and the filtering efficiency.

[0062] Example 4

[0063] The difference between this embodiment and embodiment 1 is that:

[0064] In order to avoid danger to the operator when the tensioning mechanism 7 links the four-bar mechanism 8, an outer protective shell 101 is provided on the outside of the air duct 1 and the protective shell 2, and an outer observation window 104 is also provided at the corresponding position of the observation window 102 of the outer protective shell 101.

[0065] The tensioning mechanism 7 includes a tensioning rope winding roller 71, a tensioning roller shaft 72, a tensioning rope 73 and a tensioning rope reversing roller 74. The tensioning roller shaft 72 is installed behind the inner wall of the protective shell 2, and the two ends of the tensioning roller shaft 72 pass through the protective shell 2 and then the tensioning rope winding roller 71 is installed. One end of the tensioning roller shaft 72 passes through the outer protective shell 101 and then a ratchet is installed. A ratchet pawl engaged with the ratchet is installed on the outer wall of the outer protective shell 101. The tensioning rope 73 is wound on the tensioning rope winding roller 71, and the tensioning rope reversing roller 74 is installed on the swinging track of the lower end of the rocker 82. The end of the tensioning rope 73 away from the tensioning rope winding roller 71 passes over the tensioning rope reversing roller 74 and is fixed on the rocker 82.

[0066] When the four-bar mechanism 8 is linked to the tensioning mechanism 7, the tensioning roller 72 is driven to rotate, and the tensioning roller 72 drives the tensioning rope winding roller 71 to rotate to wind up the tensioning rope 73, thereby tightening the tensioning rope 73. While the tensioning rope 73 is tightened, the rocker 82 is pulled in the direction away from the air inlet side to complete the linkage with the four-bar mechanism 8, and in order to facilitate the swing of the rocker 82, a tensioning rope reversing roller 74 is installed on its swinging trajectory.

[0067] After completing the linkage with the four-bar mechanism 8, it is necessary to temporarily fix the position of the rocker 82. Therefore, one end of the tensioning roller 72 passes through the outer protective shell 101 and is installed with a ratchet. The ratchet can limit the circumferential rotation of the tensioning roller 72. When the replacement of the used filter blanket 103 is completed, the four-bar mechanism 8 needs to be reset so that the fixing plate 5 and the pressure plate 10 complete the fixation of the filter blanket 103. At this time, the tensioning rope 73 wound on the tensioning rope winding roller 71 needs to be unwound. By controlling the pawl and the ratchet to separate, the tensioning rope winding roller 71 can rotate freely, and the rocker 82 is reset under the action of the tension spring 81, and the unwinding of the tensioning rope 73 is completed at the same time.

[0068] Through the design of the tensioning mechanism 7, the linkage structure of the tensioning rope winding roller 71, the tensioning roller shaft 72, the tensioning rope 73 and the tensioning rope reversing roller 74 is utilized to realize the winding and tensioning of the tensioning rope 73, and drive the rocker 82 to swing away from the air inlet side, thereby completing the linkage action with the four-bar mechanism 8; at the same time, through the cooperation of the ratchet and the pawl, the position of the rocker 82 can be temporarily fixed after the replacement of the filter blanket 103 is completed, thereby ensuring the operational stability; when resetting is required, the pawl is controlled to separate from the ratchet, the tensioning rope winding roller 71 is unwound, and the rocker 82 is reset under the action of the tension spring 81, thereby completing the resetting action of the four-bar mechanism 8, so that the fixing plate 5 and the pressure plate 10 re-fix the filter blanket 103, thereby realizing the efficient replacement of the filter blanket and the safe and reliable operation of the system.

[0069] Example 5

[0070] The difference between this embodiment and embodiment 1 is that the clamping device 9 includes a guide rod 91, a fixing cap 92 and a clamping spring 93. One end of the guide rod 91 is fixed on the fixing plate 5, and the other end passes through the pressing plate 10 and is installed with the fixing cap 92. A clamping spring 93 is arranged between the fixing cap 92 and the pressing plate 10. The clamping spring 93 pushes the pressing plate 10 toward the fixing plate 5, so that the two can complete the fixation of the filter blanket 103.

[0071] Through the design of the clamping device 9, using the structure of the guide rod 91, the fixing cap 92 and the clamping spring 93, the clamping spring 93 pushes the pressing plate 10 in the direction of the fixing plate 5, ensuring that the pressing plate 10 and the fixing plate 5 can fit tightly, thereby reliably fixing the filter blanket 103, avoiding air leakage from the edge, ensuring that all air is filtered through the filter blanket 103, and improving the filtration efficiency; at the same time, the elastic design of the clamping device 9 can adapt to slight changes in the thickness of the filter blanket 103, ensuring the stability and sealing of the system operation.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A blanket-type filter device, comprising a fixing plate (5) fixed in an air duct (1) along a vertical direction, a pressure plate (10) is arranged parallel to the side of the fixing plate (5), the pressure plate (10) is arranged on the air inlet side, a limiting cavity for limiting the position of a filter blanket (103) is formed between the fixing plate (5) and the pressure plate (10), and clamping devices (9) are evenly arranged at the edge positions of the fixing plate (5) and the pressure plate (10), an unwinding mechanism (3) for unwinding an unused filter blanket is arranged above the air duct (1), and a rewinding mechanism (6) for storing a used filter blanket is arranged below the air duct (1), and protective shells (2) are arranged on the outer sides of the unwinding mechanism (3) and the rewinding mechanism (6), and the air duct (1) is respectively provided with a blanket material introduction hole and a blanket material outlet hole for the filter blanket (103) to pass through on the upper and lower sides of the filter cavity; A four-bar mechanism (8) for pulling the pressing plate (10) and the fixing plate (5) apart is installed on the side of the pressing plate (10) away from the fixing plate (5), and the four-bar mechanism (8) is connected to the tensioning mechanism (7).

2. A blanket filter device according to claim 1, characterized in that: An observation window (102) is installed on the outer wall of the protective shell (2), and an illumination lamp is arranged inside the protective shell (2).

3. A blanket filter device according to claim 2, characterized in that: The unwinding mechanism (3) comprises an unwinding roller (31) and a first reversing roller (33); the filter blanket (103) on the unwinding roller (31) passes over the first reversing roller (33) and enters the limiting cavity from the blanket material introduction hole; the edge of the first reversing roller (33) is tangent to the edge of the blanket material introduction hole on a side close to the unwinding roller (31).

4. A blanket filter device according to claim 3, characterized in that: The winding mechanism (6) comprises winding rollers (61) and (66); the filter blanket (103) in the limiting cavity passes through the blanket material outlet hole, passes under the second guide roller (63), and is then wound around the winding roller (61); an edge of the second guide roller (63) is tangent to an edge of the blanket material outlet hole on a side close to the winding roller (61).

5. A blanket filter device according to claim 4, characterized in that: A tension adjustment mechanism (4) is provided between the unwinding roller (31) and the first reversing roller (33); The tension adjustment mechanism (4) comprises an n-shaped frame (41), a guide rotating block (42), a tension roller (43) and a tension spring (44); the n-shaped frames (41) are arranged in parallel; the guide rotating block (42) is slidably arranged between the wing plates of the n-shaped frame (41); the tension spring (44) is arranged between the guide rotating block (42) and the web of the n-shaped frame (41); the tension roller (43) is arranged between the guide rotating blocks (42); and the filter blanket (103) passes under the tension roller (43).

6. A blanket filter device according to claim 5, characterized in that: The four-bar mechanism (8) comprises a tension spring (81), a rocker (82), a transition rod (83), a sliding rod (84), a sliding support seat (85) and a connecting plate (86); the sliding support seat (85) is symmetrically arranged on both sides of the air duct (1); a sliding rod (84) is slidably arranged in the sliding support seat (85); one end of the sliding rod (84) is connected to the pressure plate (10) through the connecting plate (86); and a movable hole for the connecting plate (86) to pass through is opened on the air duct (1).

7. A blanket filter device according to claim 6, characterized in that: A plurality of sealing sheets are arranged on one side of the movable hole close to the sliding support seat (85), one end of the sealing sheet is fixed at the opening of the movable hole, and the other end of the sealing sheet is arranged with a magnet.

8. A blanket filter device according to claim 7, characterized in that: An outer protective shell (101) is arranged outside the air duct (1) and the protective shell (2), and the outer protective shell (101) is also provided with the outer observation window (104) at a position corresponding to the observation window (102).

9. A blanket filter device according to claim 8, characterized in that: The tensioning mechanism (7) comprises a tensioning rope winding roller (71), a tensioning roller shaft (72), a tensioning rope (73) and a tensioning rope reversing roller (74); the tensioning roller shaft (72) is installed between the inner walls of the protective shell (2); the two ends of the tensioning roller shaft (72) pass through the protective shell (2) and then the tensioning rope winding roller (71) is installed; one end of the tensioning roller shaft (72) passes through the outer protective shell (101) and then a ratchet is installed; a ratchet pawl engaged with the ratchet is installed on the outer wall of the outer protective shell (101); the tensioning rope (73) is wound on the tensioning rope winding roller (71); the tensioning rope reversing roller (74) is installed on the swinging track of the lower end of the rocking arm (82); the end of the tensioning rope (73) away from the tensioning rope winding roller (71) passes over the tensioning rope reversing roller (74) and is fixed on the rocking arm (82).

10. A carpet-type filter device according to claim 9, characterized in that: The clamping device (9) comprises a guide rod (91), a fixing cap (92) and a clamping spring (93); one end of the guide rod (91) is fixed on the fixing plate (5); the other end passes through the pressing plate (10) and is then installed with the fixing cap (92); a clamping spring (93) is provided between the fixing cap (92) and the pressing plate (10).

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