Screw conveyor with flexible opening and closing cover plate and adjusting method

Abstract

The invention discloses a spiral conveyor with a flexible opening and closing cover plate and an adjusting method, and relates to the technical field of spiral conveyors. The spiral conveyor with the flexible opening and closing cover plate comprises a conveying module and an opening and closing module. The conveying module comprises a conveying assembly, and the conveying assembly comprises a conveying groove with a top opening; the opening and closing module comprises a cover plate assembly and an elastic connecting piece; the cover plate assembly is rotationally installed at the top opening position of the conveying groove. When materials are stacked in the conveying groove, the cover plate assembly can be pushed to be opened. The elastic connecting piece is connected with the cover plate assembly, and the elastic connecting piece can apply closing force to the cover plate assembly. When the material flow is too large, materials can push the cover plate assembly to be opened, and blocking is avoided. The elastic connecting piece can continuously apply a closing force, so that the cover plate assembly has a closing trend, and when the cover plate assembly is opened by a material, the cover plate can still be pressed on the surface of the material, so that the material is prevented from overflowing; and the elastic connecting piece can automatically apply closing force, so that the labor cost is relatively low.

Description

Technical Field

[0001] The invention relates to the technical field of screw conveyors, and in particular to a screw conveyor with a flexible opening and closing cover plate and an adjustment method. Background Art

[0002] In the sludge treatment system of the water plant, screw conveyors are usually used to transport materials (the materials include sludge and solid objects such as gravel and garbage mixed in the sludge), but the supply of materials is not stable, and the sludge conveying amount of the screw conveyor is also unstable.

[0003] If the screw conveyor is not equipped with a cover plate, the material with a sudden increase in flow will overflow from the top opening of the screw conveyor, causing loss; if a cover plate is installed, it is easy to cause material blockage or even jam the screw conveyor, and the user needs to remove the cover plate for maintenance later, which reduces work efficiency. In the prior art, there are screw conveyors with cover plates that can be quickly disassembled, but they require more manual participation and cannot avoid the problem of blockage from the root. Summary of the invention

[0004] In order to overcome the problem in the above background technology that "the screw conveyor cannot avoid material overflow and blockage while using less manpower", the present invention provides a screw conveyor with a flexible opening and closing cover and an adjustment method.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A screw conveyor with a flexible opening and closing cover plate comprises a conveying module and an opening and closing module; the conveying module comprises a conveying assembly, and the conveying assembly comprises a conveying trough with a top opening; the opening and closing module comprises a cover plate assembly and an elastic connecting piece; the cover plate assembly can be rotatably installed at the top opening position of the conveying trough; when materials accumulate in the conveying trough, they can push the cover plate assembly to open; the elastic connecting piece is connected to the cover plate assembly, and the elastic connecting piece can apply a closing force to the cover plate assembly.

[0007] As a further optimization scheme of the present invention, the conveying module also includes a feed screw, a drive motor and a support frame; the feed screw is rotatably arranged in the conveying trough, and the output shaft of the drive motor is connected to the feed screw; the support frame is installed at the bottom and / or the outer wall of the conveying component; the housing of the drive motor is connected to the conveying component and / or the support frame.

[0008] As a further optimization solution of the present invention, the conveying component is an arc plate structure with a U-shaped cross-section.

[0009] As a further optimization solution of the present invention, the conveying module is provided with a feed inlet and a discharge port, and the feed inlet and the discharge port are respectively connected to two ends of the conveying trough.

[0010] As a further optimization scheme of the present invention, the cover plate assembly includes a first plate body and a second plate body; the first plate body is arranged at the top opening position of the conveying trough, and the edge of the first plate body is hinged to the outer edge of the top surface of the conveying assembly or the outer edge of the top surface of the support frame; the second plate body is vertically fixedly installed at the outer edge position of the top surface of the first plate body; the elastic connecting member is hinged to the top end of the second plate body.

[0011] As a further optimization scheme of the present invention, the elastic connecting member includes a telescopic rod, a kit and a compression spring; the opening and closing module also includes an adjusting component; one end of the telescopic rod is hinged to the second plate body, and the other end is inserted and fixed in the kit; a retaining ring is fixedly installed on the outer surface of the end of the telescopic rod close to the second plate body, and the compression spring is sleeved on the outer periphery of the telescopic rod, and the two ends of the compression spring are respectively crimped with the retaining ring and the kit; the adjusting component is connected to the kit; the adjusting component is connected to the conveying component and / or the support frame.

[0012] As a further optimization scheme of the present invention, the adjustment component includes a third plate body and an adjustment rod; the third plate body is fixedly connected to the conveying component and / or the support frame; the top end of the adjustment rod is hinged to the kit, and the middle part of the adjustment rod is hinged to the third plate body; the adjustment rod is provided with a socket, and the third plate body is provided with a plurality of gear holes arranged in an arc shape; the gear hole is adapted to the socket; when the adjustment rod and the third plate body rotate relative to each other, the socket can be selectively aligned and locked with one of the plurality of gear holes.

[0013] As a further optimization scheme of the present invention, the opening and closing modules are arranged in pairs at the top opening position of the conveying trough; the two pairs of opening and closing modules are arranged in an axially symmetrical manner with the center line of the top opening of the conveying trough as the center; an accommodating gap is provided between the two pairs of opening and closing modules, and two elastic sealing strips that can overlap each other are provided in the accommodating gap, and the two elastic sealing strips are respectively connected to the first plate body on both sides.

[0014] As a further optimization scheme of the present invention, a vertical pulling column is provided at the outer edge position of the top end of the conveying component, and the edge of one end of the first plate body away from the pulling column is connected to the top end of the pulling column by a pull rope; a clearance groove is provided at the edge position of the first plate body, and the pulling column is inserted into the clearance groove, and a clearance gap is provided between the pulling column and the clearance groove, and the clearance gap is located on the inner side of the pulling column; a film is provided on the lower surface of the first plate body, and the film includes a transverse part and a vertical part which are connected to each other and can rotate relative to each other, the transverse part is arranged on the lower surface of the first plate body and blocks the bottom surface of the clearance gap, and the vertical part is arranged between the support frame and the conveying component, so as to realize the isolation of the clearance groove and the conveying groove.

[0015] A method for adjusting a screw conveyor with a flexible opening and closing cover: rotating the adjusting rod to selectively align and lock the insertion hole with one of the plurality of gear holes, thereby adjusting the closing force applied by the elastic connecting member to the cover assembly.

[0016] In summary, the present invention has at least one of the following benefits:

[0017] (1) The present invention has a simple structure and reliable functions. When the material flow is too large, the material can push the cover assembly to open, thereby avoiding blockage and ensuring the fluidity of the material. The elastic connector can continuously apply a closing force to the cover assembly, so that the cover assembly has a tendency to close. When the material pushes the cover assembly open, the cover can still be pressed against the surface of the material, thereby avoiding material overflow. The elastic connector can automatically apply a closing force to the cover assembly without the need for human intervention, thereby having a lower labor cost.

[0018] (2) During installation or maintenance, the user can adjust the thrust (closing force) applied by the elastic component to the cover assembly through the adjustment component to adapt to various working conditions. Under different working conditions, the material has different fluidity due to different viscosity, humidity, density, etc., so it is necessary to apply different thrusts to the cover assembly to achieve lateral blocking of the material; that is, it is necessary to avoid excessive thrust that causes the cover assembly to be overturned (further causing material overflow), and to avoid excessive thrust that causes the material to be unable to lift the cover assembly (further causing material blockage).

[0019] (3) The cover plate assembly can be opened to expose the conveying trough, thereby facilitating the user to disassemble and clean the present invention, thereby increasing the convenience of maintenance.

[0020] (4) When the cover plate assembly is opened, the two elastic sealing strips are pressed against each other, thereby sealing the gap between the two cover plate assemblies to prevent the material from overflowing through the gap.

[0021] (5) The pulling column applies an upward pulling force to the inner edge of the first plate body through the pull rope, thereby stably limiting the first plate body at the opening position of the top surface of the conveying trough, preventing the first plate body from falling into the conveying trough and causing the feeding screw to be stuck.

[0022] (6) The horizontal portion of the film is arranged on the lower surface of the first plate body, and the vertical portion is arranged between the support frame and the conveying assembly, so as to isolate the clearance groove from the conveying groove, prevent the material in the conveying groove from flowing into the conveying groove, and ensure the rotatability of the first plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application is further described below with reference to the accompanying drawings:

[0024] Figure 1 It is a front view schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the conveying module;

[0026] Figure 3 It is a schematic side elevation view of the overall structure of the present invention;

[0027] Figure 4 It is a front view structural diagram of the opening and closing module;

[0028] Figure 5 It is a front structural schematic diagram of the cover plate assembly and the adjustment assembly;

[0029] Figure 6 is a front structural schematic diagram of an elastic connector;

[0030] Figure 7 It is a schematic diagram of the position and structure of the third plate body and the gear hole;

[0031] Figure 8 It is a schematic diagram of the rotation state of the adjusting rod;

[0032] Fig. 9 Schematic diagram of the elastic sealing strips fitting each other (I);

[0033] Fig.10 Schematic diagram of the elastic sealing strips fitting each other (II);

[0034] Fig.11 It is a schematic side view of the vertical section structure of the first connector being plugged into the plug hole and the gear hole;

[0035] Fig.12 It is a schematic side view of the vertical section structure of the second connector being plugged into the plug hole and the gear hole;

[0036] Fig.13 It is a schematic diagram of the installation position and structural section of the rear panel;

[0037] Fig.14 It is a schematic diagram of the installation position and structure of the rear panel from the front;

[0038] Fig.15 It is a schematic diagram of the installation position and structure of the pull column and the pull rope;

[0039] Fig.16 It is a top view of the installation position and structure of the pull column and the pull rope;

[0040] Fig.17 A schematic diagram of the film setting position;

[0041] Fig.18 is a schematic diagram of the structure of the film;

[0042] Fig.19 This is a schematic diagram of the state where the connecting column abuts against the second plate body.

[0043] Description of reference numerals:

[0044] In the figure,

[0045] 1. Conveying module; 101. Feeding port; 102. Discharging port; 11. Conveying assembly; 110. Conveying trough; 1101. Top support rod; 111. Arc plate; 12. Conveying screw rod; 13. Driving motor; 14. Support frame; 141. Support leg; 142. Cross beam;

[0046] 2. Opening and closing module; 21. Cover assembly; 211. First plate; 21101. Make way groove; 21102. Make way gap; 21103. Film; 21103a. Horizontal part; 21103b. Vertical part; 212. Second plate; 213. Elastic sealing strip; 214. Pulling column; 215. Pull rope; 22. Elastic connector; 221. Telescopic rod; 2211. Stop ring; 222 , kit; 223, compression spring; 23, adjustment assembly; 231, third plate; 2311, gear hole; 232, adjustment rod; 2321, socket; 233, first connector; 2331, screw-on stud; 2332, screw-on fin; 234, back plate; 2341, oblique hole; 235, second connector; 2351, plug-in column; 23511, magnetic terminal; 2352, plug-in fin. DETAILED DESCRIPTION

[0047] Based on the above structural features of the present application, the implementation methods of the present application are further described:

[0048] Reference Figure 1-2This embodiment provides a screw conveyor with a flexible opening and closing cover, comprising a conveying module 1 and an opening and closing module 2. The conveying module 1 is used to contain and convey materials, and the opening and closing module 2 can block the top opening of the conveying module 1 to avoid the problem of material splashing; at the same time, the opening and closing module 2 can dredge excess materials in a slightly open form to avoid the problem of material jamming during the conveying process.

[0049] Reference Figure 1-2 The conveying module 1 includes a conveying assembly 11, and the conveying assembly 11 includes a conveying trough 110 with a top opening. The conveying trough 110 is a straight trough structure, so as to accommodate and guide the material.

[0050] Reference Figure 1-2 The conveying module 1 also includes a feed screw 12, a drive motor 13 and a support frame 14; the surface of the feed screw 12 is provided with fins arranged in a spiral shape, and the fins can be used to apply a driving force to the material when the feed screw 12 rotates. The feed screw 12 is rotatably arranged in the conveying trough 110, and the axial direction of the feed screw 12 is arranged along the length direction of the conveying trough 110, so that the feed screw 12 can push the material from one end of the conveying trough 110 to the other end. The output shaft of the drive motor 13 is directly connected or indirectly connected to the feed screw 12. The output shaft is directly plugged into the feed screw 12 and fastened by bolts to achieve direct connection; the output shaft is connected to the feed screw 12 through a spline or a transmission to achieve indirect connection. The support frame 14 is installed at the bottom and / or the outer wall of the conveying component 11, and the support frame 14 applies a supporting force to the conveying component 11; the housing of the driving motor 13 is fixedly connected to the conveying component 11 and / or the support frame 14 by bolts, and the conveying component 11 and / or the support frame 14 apply a supporting force to the driving motor 13.

[0051] Reference Figure 3 The conveying component 11 is an arc plate 111 structure with a U-shaped cross section, and the conveying trough 110 is arranged in the inner cavity of the arc plate 111.

[0052] Reference Figure 3The support frame 14 includes a plurality of legs 141 and a plurality of cross bracing beams 142. The upper portion of the legs 141 is fixedly connected to the outer side wall of the arc plate 111 (for example, fixedly connected by bolts or fixedly connected by welding). The legs 141 are arranged in two rows, and the two rows of legs 141 are respectively arranged at the positions of the two outer side walls of the arc plate 111. The adjacent legs 141 are reinforced and fixed by cross bracing beams 142. The two ends of the cross bracing beams 142 are respectively fixedly connected to the lower side walls of the adjacent legs 141 (for example, fixedly connected by bolts or fixedly connected by welding); the cross bracing beams 142 are arranged in a grid shape, thereby connecting the legs 141 together to improve the structural stability of the support frame 14. The bottom surface of the arc plate 111 is pressed against the upper surface of the cross bracing beams 142, thereby reducing the load on the upper portion of the legs 141 and improving the service life of the present invention.

[0053] Reference Figure 2 The conveying module 1 is provided with a feed port 101 and a discharge port 102, which are respectively connected to the two ends of the conveying trough 110. The driving motor 13 is arranged at the end of the conveying component 11; the feed port 101 is arranged at the end of the conveying component 11 close to the driving motor 13, and the discharge port 102 is arranged at the end of the conveying component 11 away from the driving motor 13. The feed port 101 is connected to the upper part of the starting end of the conveying trough 110, and the discharge port 102 is connected to the bottom surface of the end of the conveying trough 110, so as to realize the conveying of materials.

[0054] Reference Figure 2 and Figure 3 A funnel-shaped hopper is provided at the feed port 101 , and the hopper is fixedly connected to the top of the side wall of the arc plate 111 (for example, directly connected by welding or indirectly connected by a cross bar and bolts); the hopper is connected to the conveying trough 110 .

[0055] Reference Figure 3 and Figure 4 The opening and closing module 2 includes a cover assembly 21 and an elastic connector 22; the cover assembly 21 can be rotatably mounted at the top opening of the conveying trough 110. When materials are accumulated in the conveying trough 110, the cover assembly 21 can be pushed to rotate outward to open; after the cover assembly 21 is opened, a space for accommodating accumulated materials can be formed above the conveying trough 110 to increase the fluidity of the materials and avoid blockage.

[0056] Reference Figure 3 and Figure 4 , the elastic connector 22 is connected to the cover assembly 21, and the elastic connector 22 can apply a closing force to the cover assembly 21. Figure 4Taking the perspective shown as an example, the accumulated materials can push the cover assembly 21 to rotate counterclockwise, and the elastic connector 22 can push the cover assembly 21 to make the cover assembly 21 have a tendency to rotate clockwise, so that the cover assembly 21 is close to the accumulated materials instead of being bounced off, thereby preventing the accumulated logistics from overflowing. After the accumulated materials leave, the elastic connector 22 pushes the cover assembly 21 to press the cover assembly 21 again at the opening position of the top surface of the conveying trough 110.

[0057] Reference Figure 4 and Figure 5 The cover plate assembly 21 includes a first plate 211 and a second plate 212; the first plate 211 is horizontally arranged at the top opening of the conveying trough 110, and the edge of the first plate 211 is hinged to the outer edge of the top surface of the conveying assembly 11 or the outer edge of the top surface of the support frame 14; the second plate 212 is vertically fixedly installed at the outer edge of the top surface of the first plate 211. Figure 4 Since the hinge point is located at the outer edge of the top surface of the conveying component 11 or the outer edge of the top surface of the supporting frame 14, the inner edge of the top surface of the conveying component 11 or the inner edge of the top surface of the supporting frame 14 can support the lower bottom surface of the first plate body 211, thereby preventing the cover plate assembly 21 from falling into the conveying trough 110 and causing blockage and damage.

[0058] Reference Figure 4 A plurality of top support rods 1101 are provided along the width direction at the opening position of the top surface of the conveying trough 110. The plurality of top support rods 1101 are arranged parallel to each other. At least two top support rods 1101 are provided under the first plate body 211, so that the first plate body 211 can be stably pressed on the top support rods 1101 to prevent the cover plate assembly 21 from falling into the conveying trough 110 and causing blockage and damage.

[0059] Reference Figure 4 and Figure 5 , the elastic connecting member 22 is hinged to the top of the second plate body 212 ; when the cover assembly 21 rotates to different positions, the elastic connecting member 22 can be connected to the second plate body 212 and apply thrust to the cover assembly 21 .

[0060] Reference Figures 4 to 6The elastic connector 22 includes a telescopic rod 221, a sleeve 222 and a compression spring 223; the opening and closing module 2 also includes an adjustment assembly 23. The telescopic rod 221 is a multi-section sleeve in a sleeve shape, which is a conventional existing technology in the industry and will not be described in detail; the telescopic rod 221 is used to adapt to the variable spacing between the sleeve 222 and the top of the second plate body 212 when the cover assembly 21 rotates. One end of the telescopic rod 221 is hinged to the second plate body 212, and the other end is plugged and fixed in the sleeve 222 (for example, fixed by bolts or fixed by cold shrinkage). A retaining ring 2211 is fixedly installed on the outer surface of the end of the telescopic rod 221 close to the second plate body 212 (for example, fixed by bolts or fixed by cold shrinkage). The compression spring 223 is sleeved on the outer circumference of the telescopic rod 221, and the two ends of the compression spring 223 are respectively crimped with the retaining ring 2211 and the sleeve 222; the compression spring 223 has a tendency to stretch, thereby applying a thrust (i.e., a closing force) to the second plate body 212, so that the cover assembly 21 has a tendency to close.

[0061] The adjustment component 23 is connected to the kit 222. The adjustment component 23 adjusts the distance between the kit 222 and the retaining ring 2211 by changing the position of the kit 222, and further changes the compression amount of the compression spring 223, thereby adjusting the thrust applied by the compression spring 223 to the cover assembly 21.

[0062] Reference Figure 5 The adjusting assembly 23 is connected to the conveying assembly 11 and / or the supporting frame 14. The conveying assembly 11 and / or the supporting frame 14 exert a supporting force on the adjusting assembly 23.

[0063] Reference Figure 5 , Figure 7 and Figure 8 The adjustment assembly 23 includes a third plate 231 and an adjustment rod 232; the edge of the third plate 231 is fixedly connected to the conveying assembly 11 and / or the support frame 14 (for example, by bolts or welding). The top of the adjustment rod 232 is hinged to the sleeve 222, and the middle of the adjustment rod 232 is hinged to the third plate 231. When a user grabs the bottom of the adjustment rod 232, the adjustment rod 232 and the third plate 231 can rotate relative to each other, thereby rotating the sleeve 222, thereby changing the distance between the sleeve 222 and the retaining ring 2211. The adjusting rod 232 is provided with a socket 2321, and the third plate body 231 is provided with a plurality of gear holes 2311 arranged in an arc shape; the gear hole 2311 is adapted to the socket 2321; when the adjusting rod 232 and the third plate body 231 rotate relative to each other, the socket 2321 can be selectively aligned and connected with one of the plurality of gear holes 2311 and locked by using the first connector 233 or the second connector 235.

[0064] Reference Fig. 9 and Fig.10The opening and closing modules 2 are arranged in pairs at the top opening of the conveying trough 110; the two opening and closing modules 2 are arranged in an axisymmetric shape with the center line of the top opening of the conveying trough 110 as the center; there is a receiving gap between the two opening and closing modules 2, and two elastic sealing strips 213 that can overlap each other are arranged in the receiving gap, and the two elastic sealing strips 213 are respectively connected to the first plate 211 on both sides (for example, fixedly connected by bolts or fixedly connected by bonding). Figure 1 and Figure 2 A plurality of pairs of opening and closing modules 2 are provided, and the pairs of opening and closing modules 2 are arranged along the length direction of the conveying component 11 so as to cover the top surface opening of the conveying trough 110 as much as possible.

[0065] Reference Fig.11 The first connector 233 includes a screw-on stud 2331 and a screw-on fin 2332. The end of the screw-on stud 2331 is fixedly mounted in the middle of the screw-on fin 2332 and is arranged in a T-shape (for example, by an integrated fixed connection, a welding fixed connection, or a bolt fixed connection). The gear hole 2311 is provided with an internal thread adapted to the screw-on stud 2331. The screw-on stud 2331 penetrates the insertion hole 2321 and can be screwed into the gear hole 2311, thereby locking the insertion hole 2321 and the corresponding gear hole 2311, that is, locking the inclination angle of the adjustment rod 232, and avoiding the problem of the first connector 233 being disengaged due to the vibration of the equipment generated during production. The user can conveniently rotate the screw-on stud 2331 by grabbing the screw-on fin 2332, thereby screwing the screw-on stud 2331 in and out.

[0066] Reference Fig.12 The second plug-in component 235 includes a plug-in column 2351 and a plug-in fin 2352. The end of the plug-in column 2351 is fixedly installed in the middle of the plug-in fin 2352 and is arranged in a T shape (for example, by an integrated fixed connection, by a welding fixed connection, or by a bolt fixed connection). The plug-in column 2351 can be adapted to be inserted into the plug hole 2321 and the gear hole 2311; the end of the plug-in column 2351 away from the plug-in fin 2352 is fixedly installed with a magnetic suction terminal 23511 (for example, by a bolt fixed connection). The third plate body 2 A rear plate 234 is fixedly installed at the side wall position 31 away from the adjusting rod 232 (for example, fixedly connected by bolts), and the rear plate 234 can block the gear hole 2311. After the plug-in column 2351 is inserted into the plug-in hole 2321 and the gear hole 2311, the magnetic end 23511 can be mutually adsorbed with the rear plate 234, thereby realizing the locking of the plug-in hole 2321 and the corresponding gear hole 2311, that is, the locking of the tilt angle of the adjusting rod 232, and avoiding the problem of the first plug-in component 233 coming out due to the vibration of the equipment generated during production. Fig.13 and Fig.14, the plug hole 2321 and the shift hole 2311 are both tilted, the end of the plug hole 2321 close to the rear plate 234 is tilted downward, and the end of the shift hole 2311 close to the rear plate 234 is tilted downward, so that the second connector 235 can be plugged into the plug hole 2321 and the shift hole 2311 in an inclined state; therefore, when the equipment vibration generated during the production process is transmitted to the present invention, under the combined action of the second connector 235's own weight and magnetic attraction, the second connector 235 will not bounce out of the plug hole 2321 and the shift hole 2311, thereby ensuring the limiting stability of the adjustment rod 232. Fig.13 , the side wall of the rear plate 234 close to the third plate body 231 is provided with a plurality of inclined holes 2341, the inclined holes 2341 are blind holes, and the plurality of inclined holes 2341 correspond to, are adapted to and are connected with the plurality of gear holes 2311 one by one, so that the magnetic end 23511 of the second connector 235 can be inserted and adsorbed in the inclined hole 2341, the end face of the magnetic end 23511 and the bottom face of the inclined hole 2341 are mutually adsorbed, and the outer wall of the magnetic end 23511 and the inner wall of the inclined hole 2341 are mutually adsorbed, thereby increasing the adsorption area and adsorption force (the conventional technology usually adopts the form of mutual adsorption of two end faces), further reducing the risk of the second connector 235 coming out. Refer to Fig.13 , the user can grab the plug-in fin 2352 and easily insert the plug-in column 2351 and the magnetic end 23511 into the socket 2321 and the gear hole 2311, which increases the convenience of use; the plug-in fin 2352 adopts a hollow structure (such as a shell structure, an annular frame structure, etc.) and / or a lightweight material (such as plastic, aluminum alloy, etc.), so that it has as small a weight as possible, and the center of gravity of the second plug-in component 235 is located on the side of the plug-in column 2351 close to the magnetic end 23511; then after the second plug-in component 235 is plugged into the adjustment rod 232 and the third plate body 231, the center of gravity of the second plug-in component 235 is located in the inclined socket 2321 and the gear hole 2311, so that the second plug-in component 235 is difficult to come out when vibrating. The form of the magnetically limited second plug-in component 235 has excellent convenience, which can save time and effort during the installation and debugging or maintenance and debugging of the present invention.

[0067] The entire third plate 231 and the entire adjustment rod 232 are made of non-magnetic conductive materials (such as plastic, aluminum alloy, etc.) to avoid attraction to the magnetic end 23511.

[0068] Part of the third plate 231 (for example, the lower part of the third plate 231 ) and part of the adjustment rod 232 (for example, the lower part of the adjustment rod 232 ) are made of non-magnetic conductive materials (for example, plastic aluminum alloy, etc.) to avoid attraction to the magnetic end 23511 .

[0069] When the third plate 231 is made of magnetic conductive material (such as 45# steel), a first magnetic isolation sleeve (such as plastic material) is inserted and fixed in the gear hole 2311, and the magnetic end 23511 and the plug-in column 2351 can be inserted in the inner cavity of the first magnetic isolation sleeve, thereby increasing the distance between the magnetic end 23511 and the third plate 231 to reduce the magnetic attraction effect. The first magnetic isolation sleeve is fixed in the gear hole 2311 by bonding or clamping.

[0070] When the adjusting rod 232 is made of magnetic conductive material (such as No. 45 steel) as a whole, a second magnetic isolation sleeve (such as plastic material) is inserted and fixed in the socket 2321, and the magnetic end 23511 and the plug-in column 2351 can be inserted into the inner cavity of the second magnetic isolation sleeve, thereby increasing the distance between the magnetic end 23511 and the adjusting rod 232 to reduce the magnetic attraction effect.

[0071] The second magnetic isolation sleeve is fixed in the insertion hole 2321 by bonding or clamping.

[0072] The rear plate 234 is made of ferrous metal material (such as 45# steel), and the magnetic end 23511 is made of permanent magnetic material (such as Al-Ni-Co permanent magnetic alloy, Fe-Cr-Co permanent magnetic alloy, permanent magnetic ferrite, etc.).

[0073] Reference Fig.14 The rear plate 234 is in a U-shaped structure to adapt to the layout position of the gear hole 2311, so that the mass of the rear plate 234 can be reduced as much as possible, thereby reducing the cost of the present invention.

[0074] A single cover plate assembly 21 is connected to at least two elastic connectors 22 , and the two elastic connectors 22 are disposed at both ends of the cover plate assembly 21 , thereby ensuring that the cover plate assembly 21 is subjected to balanced force and avoiding the problem of jamming due to eccentric loading.

[0075] Reference Fig.15 and Fig.16 A vertical connecting column 214 is provided at the outer edge of the top of the conveying component 11. The connecting column 214 is fixedly connected to the support frame 14 or the conveying component (for example, fixedly connected by bolts or fixedly connected by welding). The top of the connecting column 214 is higher than the top of the second plate body 212. The edge of one end of the first plate body 211 away from the connecting column 214 is connected to the top of the connecting column 214 by a pull rope 215. The pull rope 215 is a flexible rope body (for example, a nylon rope, a hemp rope, etc.). The pull rope 215 is used to apply tension to the first plate body 211, so as to prevent the first plate body 211 from flipping inward and entering the conveying trough 110. At the same time, it can also reduce the load borne by the hinge at the end of the first plate body 211 (the load comes from the weight of the first plate body 211), so as to prevent the hinge from overloading and failing or falling off, thereby increasing the service life of the present invention. Since the pull rope 215 is a flexible rope body, the pull rope 215 will not hinder the opening of the first plate body 211, thereby ensuring the functional integrity of the present invention. Refer to Fig.16 A single first plate body 211 is connected by at least two connecting posts 214 and two pulling ropes 215; a clearance groove 21101 is provided at the edge of the first plate body 211, and the connecting post 214 is inserted into the clearance groove 21101. A clearance gap 21102 is provided between the connecting post 214 and the clearance groove 21101, and the clearance gap 21102 is located on the inner side of the connecting post 214, thereby providing an accommodating space for the rotation of the vertical plate to prevent the connecting post 214 from getting stuck in the first plate body 211.

[0076] Reference Fig.17 , a film 21103 is provided on the lower surface of the first plate body 211 (for example, fixed by bonding), and the film 21103 can cover the bottom surface of the clearance gap 21102, thereby preventing the material from flowing out through the clearance gap 21102, and preventing the material from flowing into the clearance gap 21102 (to prevent the dried sludge from being stuck in the clearance gap 21102, causing the problem that the first plate body 211 cannot rotate). The bottom end of the film 21103 is fixedly bonded to the outer wall of the conveying component 11. This embodiment requires the hinge at the end of the first plate body 211 to be connected to the support frame 14 (rather than to the conveying component 11), and the pulling column 214 to be connected to the support frame 14 (rather than to the conveying component 11), so as to achieve the clearance of the film 21103. The film 21103 is a flexible film 21103, for example, a plastic film 21103, so that it has a certain bending ability; the bottom end of the film 21103 is clamped and fixed by the support frame 14 and the conveying component 11. Refer to Fig.17 and Fig.18 The film 21103 includes a transverse portion 21103a and a vertical portion 21103b which are interconnected and can rotate relative to each other. The transverse portion 21103a is arranged on the lower surface of the first plate body 211 and blocks the bottom surface of the clearance gap 21102. The vertical portion 21103b is arranged between the support frame 14 (the support leg 141) and the conveying component 11, thereby realizing the isolation of the clearance groove 21101 and the conveying groove 110, preventing the material in the conveying groove 110 from flowing into the conveying groove 110, and ensuring the rotatability of the first plate body 211.

[0077] by Fig.17 Take the perspective shown as an example, combined with Fig.18 When the first plate body 211 is rotated counterclockwise to open, the transverse portion 21103a arranged on the lower surface of the first plate body 211 will not collide with and squeeze the connecting column 214; if the transverse portion 21103a is arranged on the top surface of the give way groove 21101, then as the first plate body 211 rotates, the edge of the transverse portion 21103a will gradually squeeze the connecting column 214, causing wrinkles to form on the edge of the transverse portion 21103a. After multiple squeezing, the wrinkles are difficult to rebound, and a gap will be formed between the transverse portion 21103a and the connecting column 214, causing material leakage.

[0078] Reference Fig.19 The connecting column 214 and the giving way groove 21101 are both arranged on the inner side of the second plate body 212; when the first plate body 211 is placed horizontally, the second plate body 212 and the connecting column 214 abut against each other, and the first plate body 211 can be maintained in a horizontal state without the need for a pull rope 215, thereby preventing the first plate body 211 from falling into the conveying groove 110, and reducing the load borne by the hinge at the edge of the first plate body 211, thereby increasing the service life of the present invention.

[0079] A method for adjusting a screw conveyor with a flexible opening and closing cover: rotating an adjusting rod 232 to selectively align a plug hole 2321 with one of a plurality of gear holes 2311 and lock it, so as to adjust the closing force applied by an elastic connecting member 22 to a cover assembly 21.

[0080] The first plate body 211 , the second plate body 212 and the third plate body 231 are all flat plate structures.

[0081] The present invention has a simple structure and reliable functions. When the material flow is too large, it can push the cover assembly 21 to open, thereby avoiding blockage; the elastic connecting member 22 can continuously apply a closing force to the cover assembly 21, so that the cover assembly 21 has a tendency to close, and when the material pushes open the cover assembly 21, the cover can still be pressed on the surface of the material, thereby avoiding material overflow; the elastic connecting member 22 can automatically apply a closing force to the cover assembly 21 without human intervention, thereby having a lower labor cost.

[0082] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0083] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" 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, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and 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.

[0084] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and deformations made to the present invention still fall within the protection scope of the present invention.

Claims

1. A screw conveyor with a flexible opening and closing cover, characterized in that: It comprises a conveying module (1) and an opening and closing module (2); The conveying module (1) comprises a conveying assembly (11), wherein the conveying assembly (11) comprises a conveying trough (110) having a top opening; The opening and closing module (2) comprises a cover plate assembly (21) and an elastic connecting member (22); the cover plate assembly (21) can be rotatably mounted at the top opening position of the conveying trough (110); when materials are accumulated in the conveying trough (110), the cover plate assembly (21) can be pushed to open; The elastic connecting member (22) is connected to the cover plate assembly (21), and the elastic connecting member (22) is capable of applying a closing force to the cover plate assembly (21).

2. The screw conveyor with a flexible opening and closing cover plate according to claim 1 is characterized in that: The conveying module (1) also includes a feeding screw (12), a driving motor (13) and a supporting frame (14); the feeding screw (12) is rotatably arranged in the conveying trough (110), and the output shaft of the driving motor (13) is connected to the feeding screw (12); the supporting frame (14) is installed at the bottom and / or the outer wall of the conveying component (11); the housing of the driving motor (13) is connected to the conveying component (11) and / or the supporting frame (14).

3. The screw conveyor with a flexible opening and closing cover plate according to claim 2 is characterized in that: The conveying component (11) is an arc plate (111) structure with a U-shaped cross section.

4. The screw conveyor with a flexible opening and closing cover plate according to claim 3 is characterized in that: The conveying module (1) is provided with a feed inlet (101) and a discharge outlet (102), and the feed inlet (101) and the discharge outlet (102) are respectively connected to two ends of the conveying trough (110).

5. The screw conveyor with a flexible opening and closing cover plate according to claim 4, characterized in that: The cover plate assembly (21) comprises a first plate body (211) and a second plate body (212); the first plate body (211) is arranged at the top opening position of the conveying trough (110), and the edge of the first plate body (211) is hinged to the outer edge of the top surface of the conveying assembly (11) or the outer edge of the top surface of the supporting frame (14); the second plate body (212) is vertically fixedly installed at the outer edge of the top surface of the first plate body (211); the elastic connecting piece (22) is hinged to the top end of the second plate body (212).

6. The screw conveyor with a flexible opening and closing cover plate according to claim 5, characterized in that: The elastic connecting member (22) comprises a telescopic rod (221), a sleeve (222) and a compression spring (223); the opening and closing module (2) further comprises an adjustment component (23); One end of the telescopic rod (221) is hinged to the second plate body (212), and the other end is inserted and fixed in the sleeve (222); a retaining ring (2211) is fixedly installed on the outer surface of the end of the telescopic rod (221) close to the second plate body (212), the compression spring (223) is sleeved on the outer periphery of the telescopic rod (221), and the two ends of the compression spring (223) are respectively crimped to the retaining ring (2211) and the sleeve (222); The adjustment component (23) is connected to the kit (222); the adjustment component (23) is connected to the conveying component (11) and / or the supporting frame (14).

7. The screw conveyor with a flexible opening and closing cover plate according to claim 6, characterized in that: The adjustment component (23) comprises a third plate body (231) and an adjustment rod (232); the third plate body (231) is fixedly connected to the conveying component (11) and / or the supporting frame (14); the top end of the adjustment rod (232) is hinged to the sleeve (222), and the middle part of the adjustment rod (232) is hinged to the third plate body (231); the adjustment rod (232) is provided with a plug hole (2321), and the third plate body (231) is provided with a plurality of gear holes (2311) arranged in an arc shape; the gear hole (2311) is adapted to the plug hole (2321); when the adjustment rod (232) and the third plate body (231) rotate relative to each other, the plug hole (2321) can be selectively aligned with and locked to one of the plurality of gear holes (2311).

8. The screw conveyor with a flexible opening and closing cover plate according to claim 7, characterized in that: The opening and closing modules (2) are arranged in pairs at the top opening of the conveying trough (110); the two opening and closing modules (2) in a pair are arranged in an axisymmetric manner with the center line of the top opening of the conveying trough (110) as the center; an accommodation gap is provided between the two opening and closing modules (2) in a pair, and two elastic sealing strips (213) that can overlap each other are provided in the accommodation gap, and the two elastic sealing strips (213) are respectively connected to the first plate body (211) on both sides.

9. The screw conveyor with a flexible opening and closing cover plate according to claim 8, characterized in that: A vertical connecting column (214) is provided at the outer edge of the top end of the conveying component (11); an edge of the first plate body (211) away from the connecting column (214) is connected to the top end of the connecting column (214) via a pull rope (215); a clearance groove (21101) is provided at the edge of the first plate body (211), the connecting column (214) is inserted into the clearance groove (21101), a clearance gap (21102) is provided between the connecting column (214) and the clearance groove (21101), and the clearance gap (21102) is located on the inner side of the connecting column (214); A film (21103) is provided on the lower surface of the first plate body (211), and the film (21103) includes a transverse portion (21103a) and a vertical portion (21103b) which are connected to each other and can rotate relative to each other. The transverse portion (21103a) is arranged on the lower surface of the first plate body (211) and blocks the bottom surface of the clearance gap (21102), and the vertical portion (21103b) is arranged between the support frame (14) and the conveying assembly (11), thereby realizing the isolation of the clearance groove (21101) and the conveying groove (110).

10. A method for adjusting a screw conveyor with a flexible opening and closing cover according to claim 9, characterized in that: The adjusting rod (232) is rotated to selectively align and lock the insertion hole (2321) with one of the plurality of gear holes (2311), thereby adjusting the closing force applied by the elastic connecting member (22) to the cover plate assembly (21).

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