Floating type curved surface sealing structure and unloader

Abstract

The utility model belongs to the technical field of unloaders. The floating type curved surface sealing structure comprises a cylinder body and a rotor assembly arranged in the cylinder body, the cylinder body and the rotor assembly are coaxially arranged, the rotor assembly comprises blades which are uniformly distributed in the circumferential direction, and the floating type curved surface sealing structure is characterized in that the floating type sealing structure is arranged between the cylinder body and the blades and comprises scraping plates which are detachably and radially arranged at the tail ends of the blades; the pre-tightening elastic piece is arranged between the scraping plate and the blade and is radially arranged along the direction of the blade; and the scraping plate is close to or far away from the inner wall of the barrel body by utilizing the stretching and retracting of the pre-tightening elastic piece, so that the floating sealing between the scraping plate and the curved surface of the barrel body is realized. The utility model is used for solving the technical problem of sealing failure caused by long-term abrasion of a sealing element between the cylinder body and the rotor assembly of the conventional unloader.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder and granular material unloading sealing, and in particular relates to a floating curved surface sealing structure and a unloading device comprising the floating curved surface sealing structure. Background Art

[0002] Dischargers, also known as air locks, are widely used in the grain, food, feed and packaging industries. They are especially important for powder and granular production conditions that require heat preservation and pressure maintenance during processing or packaging processes. For example, the structural configuration and sealing performance of the discharge device for sinking granular feed and micro-granular feed in the production of puffed aquatic feed often determine the production performance of the equipment and the quality of the finished product.

[0003] The traditional discharger has limited application conditions and fields because its two ends and blades have no sealing performance or poor sealing. In recent years, papers and patents on the end face and blade density of the discharger have been published, such as the CN112617254B patent specification, which provides a highly wear-resistant ceramic composite material as a scraper to achieve the sealing of the blade and the cylinder. First, the sealing of the scraper structure puts higher requirements on the processing and installation accuracy of the entire blade rotor and cylinder; secondly, the material of the metal cylinder in the application often needs to be higher than that of the ceramic composite material, otherwise the cylinder is prone to wear, resulting in poor sealing, which poses a challenge to the selection of materials and processing technology. The above two factors make the manufacturing and installation costs of the rigid scraper blade shell sealing structure high and the interchangeability of parts poor.

[0004] The CN218024027U patent specification published by Yanggong Machinery in 2022 also provides a similar blade sealing structure, which also has the above-mentioned problems. The blade rotor and cylinder have high processing and installation precision and high preparation cost; the blade scraper and the cylinder wear, resulting in seal failure and loss of pressure and heat preservation function; the interchangeability of wear parts is poor. Utility Model Content

[0005] The first purpose of the utility model is to provide a floating curved surface sealing structure, which solves the technical problem that the sealing part between the cylinder body and the rotor assembly of the existing discharger is worn for a long time and thus causes the sealing failure.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solution: a floating curved surface sealing structure, comprising a cylinder and a rotor assembly arranged in the cylinder, wherein the cylinder and the rotor assembly are coaxially arranged, and the rotor assembly comprises blades uniformly distributed in the circumferential direction, wherein a floating sealing structure is arranged between the cylinder and the blades, comprising:

[0007] a scraper, which is detachable and radially arranged at the end of the blade;

[0008] The preloaded elastic member is arranged between the scraper and the blade and radially along the blade direction; the scraper is moved closer to or away from the inner wall of the cylinder by utilizing the expansion and contraction of the preloaded elastic member, thereby realizing a floating seal between the scraper and the curved surface of the cylinder.

[0009] The utility model mainly realizes the sealing of the blade and the cylinder curved surface through the floating mechanism of the pre-tightening elastic member and the scraper. The floating rotor assembly has the ability of follow-up compensation, and the structure is simple and easy to replace, which can effectively realize the effective sealing of the curved surface and extend the service life of the parts. The scraper is pressed and fitted with the fixed seat under the action of external force. At this time, the diameter of the circular section where the arc line at the top of the scraper is smaller than the diameter of the circular section of the cylinder. The rotor assembly can be smoothly assembled and disassembled, and the maintenance is efficient and convenient; when the rotor assembly is installed in place, the quick-change scraper is always sealed with the cylindrical surface of the cylinder under the action of the pre-tightening elastic member, and continues to compensate with the wear of the end until it reaches the set limit clearance of the mechanism and is replaced. This structure effectively extends the scraper to reduce the wear of parts and extend its service life.

[0010] In order to solve the technical problem that the scraper is directly arranged on the blade so as to achieve high processing accuracy of the blade and the scraper, the utility model adopts the following technical solution: a fixing seat is radially arranged at the end of the blade, and the scraper is detachably mounted on the fixing seat;

[0011] The preload elastic member is arranged between the scraper and the fixing seat and is radially arranged along the blade direction.

[0012] The scraper of the utility model is installed at the end of the blade via a fixing seat, which reduces the processing accuracy of the blade and the scraper. The fixing seat, the scraper and the pre-tightening elastic member are an assembly structure, which is convenient for replacement of parts after wear.

[0013] In order to solve the technical problem of how to install the elastic member, the utility model adopts the following technical solution: the fixing seat and the scraper are provided with matching elastic member installation grooves for placing the preloaded elastic member. The utility model designs the elastic member installation grooves in half on the fixing seat and the scraper, which is convenient for the processing of the grooves and the application of preloaded force by the preloaded elastic member.

[0014] In order to solve the technical problem that the fixing seat cannot be replaced when damaged, the utility model adopts the following technical solution: the fixing seat is detachably arranged at the end of the blade. The fixing seat and the blade of the utility model are designed as a detachable structure, which is convenient for timely replacement of the fixing seat after wear, avoiding replacement of the entire blade.

[0015] In order to solve the technical problem of how to achieve the sleeve connection between the fixed seat and the scraper, the utility model adopts the following technical solution: the fixed seat and the scraper are connected by a card slot structure, and the scraper can move relative to the fixed seat along the blade radial direction. The utility model uses the card slot structure to embed the outer end of the fixed seat into the scraper, making the structure of the entire sealing structure compact.

[0016] In order to solve the technical problem of how to realize the card table and card slot structure, the utility model adopts the following technical solution, the fixed seat includes a seat body, and card tables arranged on both sides of the seat body;

[0017] The outer end of the seat body is provided with an elastic member mounting half groove, and the inner end of the seat body is provided with a blade mounting groove;

[0018] A cross-shaped slot is arranged at the mounting end of the scraper, and the cross-shaped slot cooperates with the fixing seat; the clamping platform can move radially in the cross-shaped slot; a second elastic member mounting half-slot is arranged in the floating end of the scraper, and the second elastic member mounting half-slot and the first elastic member mounting half-slot form the elastic member mounting slot.

[0019] The utility model designs the fixed seat as a seat body and a clamping table structure. The outer end of the seat body, that is, the end of the seat body close to the cylinder, is radially processed with a second half groove for installing the elastic member; the inner end of the seat body, that is, the end of the seat body close to the cylinder, is radially processed with a blade installation groove, and the first half groove for installing the elastic member and the blade installation groove are both radially arranged. The seat body of the fixed seat of the utility model is installed on the vertical part of the cross groove of the scraper, and the clamping table of the fixed seat is installed on the horizontal part of the cross groove of the scraper, and the height of the horizontal part is greater than the height of the clamping table, so as to provide space for the clamping table to move radially.

[0020] In order to solve the technical problem of how to realize the seat body of the scraper and the fixed seat, the utility model adopts the following technical solution: the scraper is a structure of small outside and large inside, the longitudinal section of the floating end of the scraper is an isosceles trapezoidal structure; the longitudinal section of the mounting end is a square structure;

[0021] The seat body of the fixing seat is an H-shaped structure.

[0022] The utility model designs the seat body as an H-shaped structure, forms a pre-tightening compression member installation groove at the outer end of the H-shaped structure, and forms a blade installation groove at the inner end of the H-shaped structure, which is convenient for processing.

[0023] In order to solve the technical problem that the scraper is easy to fall off from the fixed seat, the utility model adopts the following technical solution: a claw structure is provided at the installation end of the scraper, and the claw structure is pressed against the side wall corresponding to the seat body of the fixed seat on the inner side of the clamping table;

[0024] Chamfers are arranged on both sides of the claw structure.

[0025] The utility model utilizes the claw structure to fit and press the fixed seat body tightly, so that the outer end of the fixed seat body is firmly sleeved in the clamping groove of the scraper, and the scraper is effectively prevented from falling off.

[0026] In order to solve the technical problem that the fixing seat protrudes from the blade and causes large resistance, the utility model adopts the following technical solution: a step portion is provided at the end of the blade, and the step portion cooperates with the seat body of the fixing seat and is connected through a connecting piece.

[0027] The utility model utilizes the step portion at the end of the blade to fit with a side edge of the inner end of the H-shaped seat body, so that the seat body is flush with the surface of the blade, the flatness of the blade end is increased, and the running resistance of the rotor assembly is reduced.

[0028] In order to solve the technical problem of serious wear between the scraper and the cylinder, the utility model adopts the following technical solution: the scraper is made of non-metallic wear-resistant material. The scraper of the utility model is made of non-metallic wear-resistant material with moderate hardness, such as wear-resistant polytetrafluoroethylene, modified plastic or nylon, which greatly reduces the wear between the scraper and the cylinder and increases the service life of the scraper.

[0029] In order to solve the technical problem of avoiding hard friction between the rotor assembly and the cylinder to increase wear and reduce service life, the utility model adopts the following technical solution: the rotor assembly and the cylinder are matched with a small tolerance clearance, or a clearance of ≤5mm is set between the rotor assembly and the cylinder.

[0030] The rotor assembly and the cylinder can be matched with a small tolerance clearance, or a clearance of ≤5mm can be left to prevent the rotor assembly and the cylinder from increasing wear due to hard friction and reducing service life. At the same time, appropriate clearance can achieve rapid assembly and disassembly of the rotor assembly and improve efficiency.

[0031] The second object of the utility model is to provide a discharger, comprising the floating curved surface sealing structure described in any one of the above items.

[0032] In order to solve the above technical problems, the utility model adopts the following technical solution: the rotor assembly also includes side plates, which are arranged on the rotating shaft of the rotor assembly and located on both sides of the cylinder, and a rotary end face sealing structure is arranged between the side plates and the corresponding cylinder. The utility model unloader can realize curved surface compartment and end face sealing under high temperature and high pressure environment.

[0033] In order to solve the technical problem of how to realize the rotary end face sealing structure, the utility model adopts the following technical solution, and the rotary end face sealing structure includes:

[0034] A sealing member, mounted on the side plate;

[0035] A pressure plate is arranged on the side plate, and is used to axially compress and position the seal. The compression end of the seal is pressed against the step surface of the cylinder. When the discharger is working, the seal rotates with the rotor assembly to realize a rotary seal between the end face of the cylinder and the side plate.

[0036] During operation, the seal rotates with the rotor assembly, and the compression end is always in contact with the cylinder, realizing the rotary sealing function between the rotor and the stator. The utility model unloader adopts a floating curved surface sealing structure, combined with a simple end face seal, which can not only avoid blade scraper wear and increase the service life of parts, but also achieve heat preservation and pressure maintenance, providing an effective unloading method and equipment for materials.

[0037] In order to solve the technical problem that the rotor assembly needs to be disassembled when replacing the floating curved surface seal structure, the utility model adopts the following technical solution: a discharge port is provided on the discharger, and the length of the discharge port is greater than the axial length of the blade. The scraper adopts a pressure plug-in structure, so that the scraper can be replaced through the discharge port without disassembling the rotor assembly.

[0038] In order to solve the technical problem of preventing materials from entering a narrow space and being unable to be discharged, the utility model adopts the following technical solution: a partition is set between adjacent blades to prevent materials from entering the narrow space inside the partition and to strengthen the rigidity of the blades. The partition is connected between two adjacent blades, which effectively blocks the materials and strengthens the rigidity of the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a position relationship diagram of the floating curved surface sealing structure and the cylinder in the working state of the utility model;

[0040] Figure 2 It is a structural schematic diagram of the floating curved surface sealing structure and the rotor assembly of the utility model;

[0041] Figure 3a This is a schematic diagram of the assembly state of the floating curved surface sealing structure and the cylinder of the utility model;

[0042] Figure 3b This is a schematic diagram of the working state of the floating curved surface sealing structure and the cylinder of the utility model;

[0043] Figure 4 This is a schematic diagram of the rotary end face seal structure of the unloader of the utility model;

[0044] In the figure: 10 unloader;

[0045] 100 cylinder body; 101 discharge port;

[0046] 200 rotor assembly; 201 blades; 202 shaft; 203 partition plate; 204 side plate;

[0047] 300 floating curved surface sealing structure; 310 scraper; 311 cross-shaped card slot; 312 elastic member installation slot 2; 313 claw structure; 320 preloaded elastic member; 330 fixed seat; 331 seat body; 3311 elastic member installation half slot 1; 3312 blade installation slot; 332 card table;

[0048] 400: rotary end face sealing structure; 401: pressure plate; 402: sealing ring. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the accompanying drawings.

[0050] like Figure 4 As shown, the discharger 10 includes a barrel 100 and a rotor assembly 200 .

[0051] like Figure 1 , 2 As shown, the rotor assembly 200 is welded by blades 201 and a shaft 202, and the blades 201 are evenly distributed in the circumferential direction of the shaft 202. The number of blades 201 is preferably 10.

[0052] In one embodiment, in order to prevent the material from entering a narrow space and being unable to be discharged, a partition 203 is used between two blades to block the material and strengthen the rigidity of the blades.

[0053] In one embodiment, Figure 1 , 2 As shown, a floating curved surface sealing structure 300 is installed between the cylinder 100 and the rotor assembly 200. Figure 3a As shown, the floating curved surface sealing structure 300 includes a scraper 310 and a pre-tightening elastic member 320 .

[0054] The scraper 310 is detachable and radially disposed at the end of the blade 201. In one embodiment, the scraper 310 is made of a non-metallic wear-resistant material with moderate hardness, such as wear-resistant polytetrafluoroethylene, modified plastic or nylon.

[0055] The preload elastic member 320 is installed between the scraper 310 and the blade 201 and is radially arranged along the blade direction. The scraper is moved closer to or away from the inner wall of the cylinder by the expansion and contraction of the preload elastic member, so as to realize floating sealing between the scraper and the curved surface of the cylinder.

[0056] In one embodiment, a fixing seat 330 is radially arranged at the end of the blade 201, and a scraper 310 is detachably mounted on the fixing seat 330. The preload elastic member 320 is arranged between the scraper 310 and the fixing seat 330, and is radially arranged along the direction of the blade.

[0057] In one embodiment, the fixing seat 330 and the scraper 310 are provided with corresponding elastic member mounting grooves for accommodating the pre-tightening elastic member 320 .

[0058] In one embodiment, the fixing seat 330 is detachably disposed at the end of the blade 201. Specifically, the fixing seat 330 is connected to the scraper 310 via a card slot structure, and the scraper 310 can move relative to the fixing seat 330 along the blade radial direction.

[0059] In one embodiment, the fixed seat 330 includes a seat body 331 and a clamping table 332. An elastic member installation half groove 3311 is provided at the outer end of the seat body 331, and a blade installation groove 3312 is provided at the inner end of the seat body 331. Specifically, the seat body 331 is H-shaped, and an elastic member installation half groove 1 is formed at the outer end of the H-shaped seat body 331, and a blade installation groove is formed at the inner end of the H-shaped seat body 331.

[0060] The clamping platforms 332 are symmetrically arranged on both sides of the base body 331 , and the clamping platforms 332 and the base body 331 are vertically arranged.

[0061] The installation end of the scraper 310 is provided with a cross-shaped card slot 311, and the cross-shaped card slot 311 cooperates with the fixed seat 330; the card table 332 can move radially in the cross-shaped card slot 311. The floating end of the scraper is provided with an elastic member installation half groove 2 312, and the elastic member installation half groove 2 312 and the elastic member installation half groove 1 form an elastic member installation groove. The floating end of the quick-change scraper 310 is provided with a pre-tightening elastic member installation slot hole, and the pre-tightening elastic member 320 is installed in the slot holes of the quick-change scraper 310 and the fixed seat 330 at the same time. The slot holes are evenly distributed along the length direction of the discharger rotor to provide sufficient clamping force to keep the quick-change scraper always in close contact with the inner curved surface of the cylinder. Generally, the interval is set to 80-100mm.

[0062] In one embodiment, the scraper 310 is a structure that is small on the outside and large on the inside. The longitudinal section of the floating end of the scraper 310 is an isosceles trapezoidal structure; the longitudinal section of the mounting end is a square structure.

[0063] In one embodiment, a claw structure 313 is provided at the installation end of the scraper 310, and the claw structure 313 is pressed against the side wall corresponding to the seat body of the fixed seat inside the clamping table. A cross-shaped clamping groove with sufficient clearance is provided between the two claws, and is matched with the fixed seat clamping table. Preferably, chamfers are provided on both sides of the claw structure to facilitate the installation and removal of the quick-change scraper 310.

[0064] In one embodiment, a step portion is provided at the end of the blade 201, and the step portion matches with the seat body of the fixing seat and is connected through a connecting piece. The fixing seat 330 is set to an "H" shape in cross section, and is fitted on the step at the end of the blade during installation and fixed by bolts.

[0065] The floating curved surface sealing structure has the ability of follow-up compensation, and the structure is simple and easy to replace. It can effectively achieve effective sealing of the curved surface and extend the service life of components.

[0066] In one embodiment, the rotor assembly 200 further includes a side plate 204 , which is disposed on the rotating shaft 202 of the rotor assembly 200 and located on both sides of the cylinder 100 , and a rotary end face sealing structure 400 is disposed between the side plate 204 and the corresponding cylinder.

[0067] In one embodiment, the rotary end face sealing structure 400 includes a sealing member 402 and a pressure plate 401. The sealing member 402 is sleeved on the side plate 204. The pressure plate 401 is arranged on the side plate 204, and is used to axially press and position the sealing member. The compression end of the sealing member is pressed against the step surface of the cylinder. When the discharger is working, the sealing member rotates with the rotor assembly to realize the rotary sealing between the end face of the cylinder and the side plate. Specifically, as Figure 4 As shown, the rotor assembly 200 and the two ends of the cylinder 100 respectively adopt a rotary end face sealing structure 400. The seal 402 is set and fastened with the side plate 204, and the seal 402 is axially pressed and positioned by the pressing plate 401, and the compression end of the seal 402 is pressed against the step surface of the cylinder 100.

[0068] The structural feature of the end face seal is that the rotor assembly 200 and the cylinder 100 can be matched with a small tolerance clearance, or a clearance of ≤5mm can be left, so that the rotor assembly 200 and the cylinder 100 can avoid hard friction to increase wear and reduce service life. At the same time, appropriate clearance can realize rapid assembly and disassembly of the rotor assembly 200 and improve efficiency.

[0069] During operation, the seal 402 rotates with the rotor assembly 200, and the compression end of the seal 402 is always in contact with the cylinder 100, thereby realizing the rotary sealing function between the rotor and the stator. In one embodiment, the rotor assembly 200 and the cylinder 100 can also be sealed in the form of a Gly ring or the like.

[0070] In one embodiment, a discharge port 101 is provided on the discharger 100, and the length of the discharge port 101 is greater than the axial length of the blade. The quick-change scraper adopts a pressure plug-in structure, and the scraper can be replaced through the discharge port without disassembling the rotor assembly.

[0071] Specifically, Figure 1The figure shows the positional relationship between the floating curved surface sealing structure 300 and the cylinder 100 when the discharger is working. Except for the quick-change scraper 310 being disassembled and assembled under the action of external force, the floating curved surface sealing structure 300 is always pressed against the inner curved surface of the cylinder 100. In addition to being fixedly connected with the blade 201 by bolts, the fixing seat 330 adopts a double-sided clamping structure to ensure the stability of the floating curved surface sealing structure 300 in consideration of the forward and reverse working conditions of the discharger.

[0072] like Figure 3a As shown, in the assembled state, the quick-change scraper 310 is pressed tightly against the fixed seat 330 by external force. At this time, the gap D between the two is 0, and the diameter d2 of the cylindrical cross-section composed of the arc surfaces at the ends of the 10 quick-change scrapers 310 distributed in the circumferential direction is smaller than the diameter d1 of the cylindrical cross-section inside the barrel 100.

[0073] like Figure 3b As shown, in the working state, the quick-change scraper 310 is pressed and fitted with the cylinder 100 under the action of the preload elastic member 320, and at this time d1=d2. The two gaps between the quick-change scraper 310 and the fixed seat 330 are D1 and D2 respectively, and the gap relationship is D2>D1>0, so as to ensure that the floating curved surface sealing structure 300 maintains sufficient compensation gap. As the discharger is used for a longer time, the end of the quick-change scraper 310 is worn, and the floating structure can continuously compensate for the wear to prevent the internal curved surface seal of the cylinder 100 from failing.

[0074] Working principle: The quick-change scraper is pressed and fitted with the fixed seat under the action of external force. At this time, the diameter of the circular section where the arc line at the top of the quick-change scraper is located is smaller than the diameter of the circular section of the cylinder. The rotor assembly can be smoothly assembled and disassembled, and maintenance is efficient and convenient. When the rotor assembly is installed in place, the quick-change scraper is always sealed with the cylindrical surface of the cylinder under the action of the pre-tightening elastic member, and continues to compensate as the end wears until it reaches the set limit clearance of the mechanism and is replaced. This structure effectively extends the scraper to reduce the wear of parts and extend its service life. At the same time, the length L (diameter) of the discharge port 101 is greater than the length L0 of the quick-change scraper. The quick-change scraper adopts a pressure plug-in structure, which can realize the replacement of the scraper through the discharge port without disassembling the rotor assembly.

[0075] The utility model realizes the sealing of the blade and the cylinder curved surface through the floating curved surface sealing structure of the pre-tightening elastic member and the quick-change scraper, and realizes the sealing of both ends through the rotary end face sealing structure, thereby ensuring the pressure maintaining capacity of the discharger.

[0076] The above-mentioned implementation mode is only for illustrating the technical features and concepts of the utility model, and its purpose is to enable technicians familiar with this technology in the field to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit and implementation mode of the utility model should be included in the protection scope of the utility model.

Claims

1. A floating curved surface sealing structure, comprising a cylinder and a rotor assembly arranged in the cylinder, wherein the cylinder and the rotor assembly are arranged coaxially, and the rotor assembly comprises blades uniformly distributed in the circumferential direction, wherein: A floating sealing structure is provided between the cylinder and the blades, comprising: a scraper, which is detachable and radially arranged at the end of the blade; The preloaded elastic member is arranged between the scraper and the blade and radially along the blade direction; the scraper is moved closer to or away from the inner wall of the cylinder by utilizing the expansion and contraction of the preloaded elastic member, thereby realizing a floating seal between the scraper and the curved surface of the cylinder.

2. The floating curved surface sealing structure according to claim 1 is characterized in that: A fixing seat is radially arranged at the end of the blade, and the scraper is detachably mounted on the fixing seat; The preload elastic member is arranged between the scraper and the fixing seat and is radially arranged along the blade direction.

3. The floating curved surface sealing structure according to claim 2 is characterized in that: The fixing seat and the scraper are provided with matching elastic member installation grooves corresponding to each other, which are used to place the pre-tightening elastic member.

4. The floating curved surface sealing structure according to claim 3 is characterized in that: The fixing seat is detachably arranged at the end of the blade.

5. The floating curved surface sealing structure according to claim 4 is characterized in that: The fixing seat and the scraper are connected via a card slot structure, and the scraper can move relative to the fixing seat along the blade radial direction.

6. The floating curved surface sealing structure according to claim 5 is characterized in that: The fixing seat comprises a seat body and clamping tables arranged on both sides of the seat body; The outer end of the seat body is provided with an elastic member mounting half groove, and the inner end of the seat body is provided with a blade mounting groove; A cross-shaped slot is arranged at the mounting end of the scraper, and the cross-shaped slot cooperates with the fixing seat; the clamping platform can move radially in the cross-shaped slot; a second elastic member mounting half-slot is arranged in the floating end of the scraper, and the second elastic member mounting half-slot and the first elastic member mounting half-slot form the elastic member mounting slot.

7. The floating curved surface sealing structure according to claim 6 is characterized in that: The scraper is a structure that is small outside and large inside, and the longitudinal section of the floating end of the scraper is an isosceles trapezoidal structure; the longitudinal section of the mounting end is a square structure; The seat body of the fixing seat is an H-shaped structure.

8. The floating curved surface sealing structure according to claim 6 is characterized in that: A claw structure is provided at the installation end of the scraper, and the claw structure is pressed against the side wall corresponding to the seat body of the fixing seat inside the clamping table; Chamfers are arranged on both sides of the claw structure.

9. The floating curved surface sealing structure according to claim 4 is characterized in that: A step portion is provided at the end of the blade, and the step portion matches with the seat body of the fixing seat and is connected through a connecting piece.

10. The floating curved surface sealing structure according to claim 1, characterized in that: The scraper is made of non-metallic wear-resistant material.

11. The floating curved surface sealing structure according to claim 1, characterized in that: The rotor assembly and the cylinder are matched with a small tolerance clearance, or a clearance of ≤5 mm is set between the rotor assembly and the cylinder.

12. A discharger, characterized in that: It comprises the floating curved surface sealing structure as described in any one of claims 1-11.

13. The discharger according to claim 12, characterized in that: The rotor assembly further comprises a side plate, which is arranged on the rotating shaft of the rotor assembly and located on both sides of the cylinder, and a rotary end face sealing structure is arranged between the side plate and the corresponding cylinder.

14. The discharger according to claim 13, characterized in that: The rotary end face sealing structure comprises: A sealing member, mounted on the side plate; A pressure plate is arranged on the side plate, and is used to axially compress and position the seal. The compression end of the seal is pressed against the step surface of the cylinder. When the discharger is working, the seal rotates with the rotor assembly to realize a rotary seal between the end face of the cylinder and the side plate.

15. The discharger according to claim 12, characterized in that: The discharger is provided with a discharge port, and the length of the discharge port is greater than the axial length of the blade.

16. The discharger according to claim 12, characterized in that: A partition is arranged between adjacent blades to prevent materials from entering the narrow space inside the partition and to strengthen the rigidity of the blades.

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