High-sealing air seal machine

Abstract

The utility model relates to the technical field of air seal machines, in particular to a high-sealing-performance air seal machine, and aims to solve the problem that a traditional air seal machine is insufficient in sealing performance. The high-sealing-performance air seal machine comprises a main shell, a working cavity is formed in the main shell, a feeding port and a discharging port are formed in the main shell and both communicate with the interior of the working cavity, and the working cavity is internally provided with an air inlet and an air outlet; an impeller is rotationally arranged in the working cavity and comprises a wheel disc and a plurality of blades, the wheel disc is rotationally connected in the working cavity, the blades are sequentially arranged in the circumferential direction of the wheel disc, a sealing partition plate is arranged at the end of each blade, and a rubber lip is arranged at the end of each sealing partition plate; the rubber lip abuts against the interior of the working cavity, and a transmission mechanism used for driving the impeller to rotate is arranged outside the main shell. The high airtightness of the working cavity is ensured, the purity of material conveying and the stability of the system are guaranteed, and the phenomena of material accumulation and blockage are reduced.

Description

Technical Field

[0001] This application relates to the technical field of air shut-off devices, and in particular to a highly sealed air shut-off device. Background Art

[0002] In modern industrial production, as a key gas-solid separation and conveying device, the air shut-off device is widely used in the pneumatic conveying system of powdery and granular materials. Its main function is to effectively cut off the direct connection between the airflow and the material in the pneumatic conveying pipeline, ensuring that the material will neither leak due to excessive airflow nor block due to excessive resistance during the conveying process, thus guaranteeing the continuous and stable operation of the production line. With the continuous progress of industrial technology and the increasing requirements for material conveying, more stringent challenges are posed to the sealing performance of the air shut-off device and the smoothness of material conveying.

[0003] However, in practical applications, especially when conveying fine powders, sticky materials or materials with complex particle shapes, traditional air shut-off devices often face the problem of insufficient sealing. This sealing defect easily causes the material to accumulate and jam in the narrow gap between the impeller and the main housing during the rotation of the impeller, which not only increases the cleaning difficulty and maintenance cost, but also may cause material blockage during the conveying process, seriously affecting the normal conveying of the material and the overall operating efficiency of the system, so it needs to be improved. Utility Model Content

[0004] In order to solve the problem of insufficient sealing of traditional air shut-off devices, this application provides a highly sealed air shut-off device.

[0005] The highly sealed air shut-off device provided by this application adopts the following technical solutions:

[0006] A highly sealed air shut-off device includes a main housing, a working chamber is arranged inside the main housing, a feed inlet and a discharge outlet are respectively opened on the main housing, both the feed inlet and the discharge outlet are communicated with the working chamber, an impeller is rotatably arranged in the working chamber, the impeller includes a wheel disc and a plurality of blades, the wheel disc is rotatably connected in the working chamber, the plurality of blades are arranged in sequence along the circumferential direction of the wheel disc, a sealing partition is arranged at the end of each blade, a rubber lip is arranged at the end of the sealing partition, the rubber lip abuts against the inside of the working chamber, and a transmission mechanism for driving the impeller to rotate is arranged outside the main housing.

[0007] Due to the fact that traditional airslide valves often face the problem of insufficient sealing, this sealing defect easily leads to the accumulation and jamming of materials in the narrow gap between the impeller and the main housing during the rotation of the impeller. This not only exacerbates the cleaning difficulty and maintenance cost, but also may cause the phenomenon of material blockage during the conveying process, seriously affecting the normal conveying of materials and the overall operation efficiency of the system. By adopting the above technical solution, including a main housing, the impeller is rotatably installed in the working chamber of the main housing. The impeller is composed of a wheel disc and a number of blades. The sealing partition is installed on the blades, and at the same time, a rubber lip is arranged at the end of the sealing partition. When the airslide valve is working, when the material enters the working chamber from the feed port, due to the rotation of the impeller, the material is gradually guided into the space formed by the impeller. The design of the sealing partition and the rubber lip effectively prevents the leakage of materials in the working chamber, ensuring airtightness. With the continuous rotation of the impeller, the material is gradually conveyed from the feed port side to the discharge port side, and the material is smoothly discharged. Through the setting of the sealing partition and the rubber lip, the close cooperation between the sealing partition and the rubber lip effectively reduces the gap between the impeller and the main housing, greatly reducing the risk of material leakage, ensuring the high airtightness of the working chamber, guaranteeing the purity of material conveying and the stability of the system, reducing the phenomenon of material accumulation and jamming, reducing the cleaning difficulty and maintenance cost, and improving the overall operation efficiency of the system. At the same time, due to the reduction of the direct contact and friction between the material and the inner wall of the working chamber, the sealing partition and the rubber lip also play a role in protecting the equipment, helping to reduce the wear degree of the equipment and extend its service life.

[0008] Optionally, a sealing groove is formed on one side of the sealing partition, the rubber lip is embedded in the sealing groove, and a deformation cavity is formed inside the rubber lip.

[0009] By adopting the above technical solution, the sealing groove is formed on the sealing partition, the rubber lip is installed in the sealing groove, and at the same time, a deformation cavity is formed inside the rubber lip. Through the setting of the sealing groove and the deformation cavity, the sealing groove provides a stable installation foundation for the rubber lip, ensuring that the rubber lip can closely fit on the inner wall of the working chamber, not only reducing the possibility of material leakage, but also improving the airtightness of the entire system. At the same time, the deformation cavity inside the rubber lip allows it to undergo a small deformation when subjected to pressure to better adapt to the shape and minor unevenness of the inner wall of the working chamber, thereby further enhancing the sealing effect.

[0010] Optionally, a positioning prevention block is formed on the side of the sealing partition close to the blade, a positioning prevention groove is formed on the surface of the blade, and the positioning prevention block is inserted into the positioning prevention groove and is adapted to the inner wall of the positioning prevention groove.

[0011] By adopting the above technical solution, the anti-positioning block is welded and fixed on the sealing partition board, and the anti-positioning groove is opened on the blade; through the arrangement of the anti-positioning block and the anti-positioning groove, and the close fit between the anti-positioning block and the anti-positioning groove, the relative position between the sealing partition board and the blade is effectively fixed, and the deviation or looseness of the sealing partition board during the rotation of the impeller is effectively reduced, enhancing the stability of the entire impeller structure, and contributing to maintaining the long-term sealing effect and operation smoothness.

[0012] Optionally, the anti-positioning block is conical, the large end face of the anti-positioning block is arranged towards the sealing partition board, and the small end face of the anti-positioning block is arranged towards the blade.

[0013] By adopting the above technical solution, the anti-positioning block is conical; through the setting of the shape of the anti-positioning block, the conical design enables the anti-positioning block to automatically center when inserted into the anti-positioning groove, ensuring the precise positioning between the sealing partition board and the blade, and enhancing the firmness of the connection.

[0014] Optionally, a connection assembly is arranged on the sealing partition board, the connection assembly includes a connection backing plate and a plurality of connection bolts, the connection backing plate is arranged at one end of the sealing partition board away from the blade, and a plurality of the connection bolts are all connected to the connection backing plate, and any one of the connection bolts sequentially penetrates through the sealing partition board and the blade.

[0015] By adopting the above technical solution, the connection assembly is installed on the sealing partition board, and the connection assembly includes a connection backing plate and a plurality of connection bolts; through the setting of the connection backing plate and a plurality of connection bolts, the connection backing plate serves as a connection interface, making the connection more uniform and stable. At the same time, the connection bolts penetrate through the sealing partition board and are in close fit with the connection backing plate, forming a firm mechanical connection, effectively reducing the relative movement or looseness between the blade and the sealing partition board during the rotation of the impeller, thereby ensuring the firmness and reliability of the connection.

[0016] Optionally, the transmission mechanism includes a transmission shaft, a driving motor, a first belt mechanism and a second belt mechanism. The transmission shaft is rotatably arranged in the working chamber of the main housing, the output end of the driving motor is connected to the transmission shaft, the wheel disc is sleeved and fixed on the transmission shaft, the first belt mechanism is arranged on one side of the wheel disc, and the first belt mechanism is in contact with the rubber lip of the corresponding blade, and the second belt mechanism is arranged on the other side of the wheel disc, and the second belt mechanism is in contact with the rubber lip of the corresponding blade.

[0017] By adopting the above technical solution, the transmission mechanism includes a transmission shaft, a driving motor, a first belt mechanism and a second belt mechanism; when the driving motor is started, with the start of the driving motor, the transmission shaft begins to rotate in the working chamber of the main housing, driving the disk sleeved and fixed thereon to rotate synchronously, and its rotation will drive the subsequent blade row to move. When the disk rotates, the first belt mechanism and the second belt mechanism respectively contact the rubber lips on the blades on both sides of it. Due to the friction of the belt and the rotating force of the disk, the rubber lips thereon are in close contact with the adjacent belt mechanism, forming an effective seal; through the setting of the transmission mechanism, the belt mechanism is in close contact with the rubber lips on the blades, realizing a more effective and lasting seal, avoiding the possible gap problem of the traditional steel housing, significantly reducing the risk of material leakage, and at the same time, compared with the steel housing or other hard contact surfaces, the flexible contact greatly reduces the friction and wear.

[0018] Optionally, both the first belt mechanism and the second belt mechanism include a first roller, a second roller, a tensioning roller and a belt. The first roller is rotatably arranged on the upper side in the working chamber, the second roller is rotatably arranged on the lower side in the working chamber, the tensioning roller is rotatably arranged between the first roller and the second roller, and the belt is arranged on the first roller, the second roller and the tensioning roller, and one side surface of the belt is tensioned and attached to the corresponding blade rubber lip.

[0019] By adopting the above technical solution, through the setting of the first roller, the second roller, the tensioning roller and the belt, the synergistic effect of the first roller, the second roller and the tensioning roller makes the belt keep stable during operation, reducing the jitter and deviation of the belt during transmission, thus ensuring the stability and reliability of the transmission.

[0020] Optionally, a maintenance opening for cleaning the blades is provided on the main housing, and a maintenance cover is arranged on the side wall of the main housing, and the maintenance cover covers the maintenance opening of the main housing.

[0021] By adopting the above technical solution, the maintenance opening is provided on the main housing, and the maintenance cover is installed at the maintenance opening; through the setting of the maintenance opening and the maintenance cover, the maintenance opening makes the maintenance and repair of the internal components of the main housing convenient, without disassembling the whole equipment, saving time and labor costs, and at the same time, the sealing performance of the maintenance cover helps to prevent external impurities from entering the equipment interior and keep the interior of the equipment clean and hygienic.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] Through the settings of the sealing partition and the rubber lip, and their tight fit, the gap between the impeller and the main housing is effectively reduced, greatly reducing the risk of material leakage, ensuring high airtightness of the working chamber, guaranteeing the purity of material transportation and the stability of the system, reducing the phenomena of material accumulation and jamming, lowering the cleaning difficulty and maintenance cost, improving the overall operating efficiency of the system. At the same time, since the direct contact and friction between the material and the inner wall of the working chamber are reduced, the sealing partition and the rubber lip also play a role in protecting the equipment, helping to reduce the wear degree of the equipment and extend its service life;

[0024] Through the settings of the anti-positioning block and the anti-positioning groove, and their tight fit, the relative position between the sealing partition and the blade is effectively fixed, effectively reducing the offset or loosening of the sealing partition during the rotation of the impeller, enhancing the stability of the entire impeller structure, and helping to maintain long-term sealing effect and operating smoothness;

[0025] Through the settings of the maintenance port and the maintenance cover, the maintenance port makes it convenient to maintain and repair the internal components of the main housing without disassembling the entire equipment, saving time and labor costs. At the same time, the sealing performance of the maintenance cover helps to prevent external impurities from entering the equipment interior and keep the interior of the equipment clean and hygienic. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a high-sealing air lock in an embodiment of the present application.

[0027] Figure 2 is a cross-sectional view of a high-sealing air lock in an embodiment of the present application.

[0028] Figure 3 is Figure 2 an enlarged view of part A of

[0029] Figure 4 is a partial schematic diagram for showing the maintenance port and the maintenance cover in an embodiment of the present application.

[0030] Description of the Reference Numerals: 1, main housing; 2, working chamber; 3, feed inlet; 4, discharge outlet; 5, impeller; 51, wheel disc; 52, blade; 6, sealing partition; 61, sealing groove; 7, rubber lip; 71, deformation cavity; 8, transmission mechanism; 81, transmission shaft; 82, drive motor; 83, first belt mechanism; 831, first roller; 832, second roller; 833, tensioning roller; 834, belt; 84, second belt mechanism; 9, anti-positioning block; 10, anti-positioning groove; 11, connection component; 111, connection backing plate; 112, connection bolt; 12, transmission protection box; 13, maintenance port; 14, maintenance cover. Detailed Embodiments

[0031] The following further elaborates on this application in conjunction with the attached drawings. Figures 1-4 A further detailed description of this application will be given below.

[0032] An embodiment of this application discloses a highly sealed air lock. Referring to Figure 1 and Figure 2 , the highly sealed air lock includes a main housing 1. The interior of the main housing 1 is a hollow structure, and a working chamber 2 is formed inside the main housing 1. A feed port 3 and a discharge port 4 are respectively provided on the main housing 1. The feed port 3 and the discharge port 4 are respectively located at the top and bottom of the main housing 1, and both the feed port 3 and the discharge port 4 communicate with the working chamber 2 of the main housing 1.

[0033] Referring to Figure 1 and Figure 2 , an impeller 5 is further installed in the working chamber 2 of the main housing 1. The impeller 5 includes a disk 51 and a plurality of blades 52. The disk 51 is rotatably installed in the working chamber 2, and the plurality of blades 52 are sequentially installed along the circumferential direction of the disk 51. The blades 52 are fixed to the surface of the disk 51 by welding.

[0034] Referring to Figure 1 and Figure 3 , a sealing partition 6 is installed at one end of each blade 52 away from the disk 51. An anti-displacement block 9 is welded and fixed on the sealing partition 6. An anti-displacement groove 10 is formed on the surface of the blade 52. The anti-displacement block 9 is inserted into the anti-displacement groove 10 and is adapted to the inner wall of the anti-displacement groove 10. The tight fit between the anti-displacement block 9 and the anti-displacement groove 10 effectively fixes the relative position between the sealing partition 6 and the blade 52, effectively reduces the offset or loosening of the sealing partition 6 during the rotation of the impeller 5, enhances the stability of the entire impeller 5 structure, and helps to maintain long-term sealing performance and operation smoothness.

[0035] Referring to Figure 1 and Figure 3 , in this embodiment, the anti-displacement block 9 is conical. The large end face of the anti-displacement block 9 is arranged towards the sealing partition 6, and the small end face of the anti-displacement block 9 is arranged towards the blade 52. The conical design enables the anti-displacement block 9 to automatically align when inserted into the anti-displacement groove 10, ensuring the precise positioning between the sealing partition 6 and the blade 52 and enhancing the stability of the connection.

[0036] Referring to Figure 1 and Figure 3, a connection assembly 11 is installed on the sealing partition plate 6. The connection assembly 11 includes a connection backing plate 111 and a number of connection bolts 112. The connection backing plate 111 is installed at one end of the sealing partition plate 6 away from the blade 52. A number of connection bolts 112 are all installed on the connection backing plate 111. Any one of the connection bolts 112 sequentially penetrates through the sealing partition plate 6 and the corresponding blade 52; the connection backing plate 111 serves as a connection interface, making the connection more uniform and stable. At the same time, the connection bolts 112 form a firm mechanical connection by penetrating through the sealing partition plate 6 and tightly cooperating with the connection backing plate 111, effectively reducing the relative movement or loosening between the blade 52 and the sealing partition plate 6 during the rotation of the impeller 5, thus ensuring the stability and reliability of the connection.

[0037] Refer to Figure 1 and Figure 3 , a sealing groove 61 is formed on one side of the sealing partition plate 6, and a rubber lip 7 is installed on the sealing partition plate 6. The rubber lip 7 is embedded in the sealing groove 61; the sealing groove 61 provides a stable installation foundation for the rubber lip 7, ensuring that the rubber lip 7 can closely fit on the inner wall of the working chamber 2, not only reducing the possibility of material leakage, but also improving the airtightness of the entire system.

[0038] Refer to Figure 1 and Figure 3 , in this embodiment, a deformation cavity 71 is formed inside the rubber lip 7; the deformation cavity 71 inside the rubber lip 7 allows it to undergo slight deformation when under pressure to better adapt to the shape and minor unevenness of the inner wall of the working chamber 2, thereby further enhancing the sealing effect.

[0039] Refer to Figure 1 and Figure 2 , a transmission mechanism 8 is installed outside the main housing 1. The transmission mechanism 8 includes a transmission shaft 81, a driving motor 82, a first belt mechanism 83, and a second belt mechanism 84. The transmission shaft 81 is rotatably installed in the main housing 1 through bearings. The wheel disc 51 is sleeved and fixed on the transmission shaft 81. The transmission shaft 81 is located at the center of the wheel disc 51. The driving motor 82 is installed outside the main housing 1. The driving motor 82 can achieve forward and reverse rotation, and the output end of the driving motor 82 is connected to the transmission shaft 81.

[0040] Refer to Figure 2, both the first belt mechanism 83 and the second belt mechanism 84 are installed in the working chamber 2 of the main housing 1. In this embodiment, the first belt mechanism 83 and the second belt mechanism 84 are respectively installed on both sides of the disk 51. Both the first belt mechanism 83 and the second belt mechanism 84 include a first roller 831, a second roller 832, a tensioning roller 833 and a belt 834. The first roller 831, the second roller 832 and the tensioning roller 833 are all rotatably installed in the working chamber 2. The first roller 831 is arranged on the upper side inside the working chamber 2, the second roller 832 is arranged on the lower side inside the working chamber 2, and at the same time, the tensioning roller 833 is arranged between the first roller 831 and the second roller 832. The belt 834 is installed on the first roller 831, the second roller 832 and the tensioning roller 833. At the same time, one side surface of the belt 834 is tightly attached to the rubber lip 7 of the corresponding blade 52. In this embodiment, the belt 834 moves as the blade 52 rotates; using the belt 834 mechanism to be in close contact with the rubber lip 7 on the blade 52 realizes more effective and durable sealing, avoids the possible gap problems of traditional steel housings, significantly reduces the risk of material leakage, and at the same time, compared with steel housings or other hard contact surfaces, the flexible contact greatly reduces friction and wear.

[0041] Refer to Figure 4 , an inspection opening 13 is provided on the main housing 1. The inspection opening 13 is communicated with the working chamber 2 of the main housing 1. The inspection opening 13 is provided on the side of the main housing 1 away from the transmission protection box 12. At the same time, an inspection cover 14 is installed on the main housing 1, and the inspection cover 14 covers the inspection opening 13 of the main housing 1; the inspection opening 13 facilitates the maintenance and inspection of the internal components of the main housing 1 without disassembling the entire device, saving time and labor costs. At the same time, the sealing performance of the inspection cover 14 helps prevent external impurities from entering the device and keeps the inside of the device clean and hygienic.

[0042] The implementation principle of a high-sealing air lock in an embodiment of this application is as follows: When the air lock works, when materials enter the working chamber 2 from the feed port 3, the drive motor 82 is started. With the start of the drive motor 82, the drive shaft 81 begins to rotate in the working chamber 2 of the main housing 1, driving the disk 51 sleeved and fixed thereon to rotate synchronously. Its rotation will drive the subsequent blades 52 to move. When the disk 51 rotates, the first belt mechanism 83 and the second belt mechanism 84 are respectively in contact with the rubber lips 7 on the blades 52 on both sides. Due to the frictional force of the belt 834 and the rotational force of the disk 51, the rubber lips 7 thereon are in close contact with the adjacent belt 834 mechanism, forming an effective seal. The materials are gradually guided into the space formed between the impeller 5 and the belt 834. The design of the sealing partition 6 and the rubber lip 7 effectively prevents the leakage of materials in the working chamber 2, ensuring airtightness. As the impeller 5 continues to rotate, the materials are gradually transported from the side of the feed port 3 to the side of the discharge port 4, and the materials are smoothly discharged;

[0043] Through the setting of the sealing partition plate 6 and the rubber lip 7, and the tight fit between the sealing partition plate 6 and the rubber lip 7, the gap between the impeller 5 and the main housing 1 is effectively reduced, greatly reducing the risk of material leakage, ensuring high airtightness of the working chamber 2, guaranteeing the purity of material transportation and the stability of the system, reducing the phenomena of material accumulation and jamming, lowering the cleaning difficulty and maintenance cost, improving the overall operation efficiency of the system. At the same time, since the direct contact and friction between the material and the inner wall of the working chamber 2 are reduced, the sealing partition plate 6 and the rubber lip 7 also play a role in protecting the equipment, helping to reduce the wear degree of the equipment and extend its service life.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-sealing air-lock valve, comprising a main housing (1), characterized in that: A working chamber (2) is provided inside the main housing (1). An inlet (3) and an outlet (4) are respectively formed on the main housing (1). Both the inlet (3) and the outlet (4) communicate with the working chamber (2). An impeller (5) is rotatably arranged in the working chamber (2). The impeller (5) includes a disk (51) and a plurality of blades (52). The disk (51) is rotatably connected inside the working chamber (2). The plurality of blades (52) are arranged in sequence along the circumferential direction of the disk (51). A sealing partition (6) is provided at the end of each blade (52). A rubber lip (7) is provided at the end of the sealing partition (6). The rubber lip (7) abuts against the inside of the working chamber (2). A transmission mechanism (8) for driving the impeller (5) to rotate is provided outside the main housing (1).

2. The high-sealing air lock according to claim 1, characterized in that: A sealing groove (61) is formed on one side of the sealing partition (6). The rubber lip (7) is embedded in the sealing groove (61). A deformation cavity (71) is formed inside the rubber lip (7).

3. The high-sealing air-lock valve according to claim 1, characterized in that: An anti-displacement block (9) is formed on the side of the sealing partition (6) close to the blade (52). An anti-displacement groove (10) is formed on the surface of the blade (52). The anti-displacement block (9) is inserted into the anti-displacement groove (10) and is adapted to the inner wall of the anti-displacement groove (10).

4. The high-sealing air lock according to claim 3, characterized in that: The anti-displacement block (9) is conical. The large end face of the anti-displacement block (9) faces the direction of the sealing partition (6), and the small end face of the anti-displacement block (9) faces the direction of the blade (52).

5. The high-sealing air-lock valve according to claim 1, wherein: A connection assembly (11) is provided on the sealing partition (6). The connection assembly (11) includes a connection backing plate (111) and a plurality of connection bolts (112). The connection backing plate (111) is arranged at one end of the sealing partition (6) away from the blade (52). The plurality of connection bolts (112) are all connected to the connection backing plate (111). Any one of the connection bolts (112) sequentially penetrates through the sealing partition (6) and the blade (52).

6. A highly sealed air lock according to claim 1, characterized in that: The transmission mechanism (8) includes a transmission shaft (81), a driving motor (82), a first belt mechanism (83) and a second belt mechanism (84). The transmission shaft (81) is rotatably arranged in the working chamber (2) of the main housing (1). The output end of the driving motor (82) is connected to the transmission shaft (81). The disk (51) is sleeved and fixed on the transmission shaft (81). The first belt mechanism (83) is arranged on one side of the disk (51), and the first belt mechanism (83) contacts the rubber lip (7) of the corresponding blade (52). The second belt mechanism (84) is arranged on the other side of the disk (51), and the second belt mechanism (84) contacts the rubber lip (7) of the corresponding blade (52).

7. The high-sealing air-lock valve according to claim 6, wherein: The first belt mechanism (83) and the second belt mechanism (84) both include a first roller (831), a second roller (832), a tensioning roller (833) and a belt (834). The first roller (831) is rotatably arranged on the upper side inside the working chamber (2), the second roller (832) is rotatably arranged on the lower side inside the working chamber (2), the tensioning roller (833) is rotatably arranged between the first roller (831) and the second roller (832), and the belt (834) is arranged on the first roller (831), the second roller (832) and the tensioning roller (833), and one side surface of the belt (834) is tightly attached to the rubber lip (7) of the corresponding blade (52).

8. The gastight air lock according to claim 1, characterized in that: An inspection opening (13) for cleaning the blade (52) is formed on the main housing (1), and an inspection cover (14) is arranged on the side wall of the main housing (1), and the inspection cover (14) covers the inspection opening (13) of the main housing (1).

Images