A screw conveyor with a flexible opening and closing cover plate and an adjustment method

Abstract

The present invention discloses a screw conveyor with a flexible opening and closing cover plate and an adjustment method, relating to the technical field of screw conveyors. The screw conveyor with a flexible opening and closing cover plate includes a conveying module and an opening and closing module; the conveying module includes a conveying component, and the conveying component includes a conveying trough provided with an opening at the top; the opening and closing module includes a cover plate component and an elastic connecting piece; the cover plate component is rotatably installed at the opening position at the top of the conveying trough; when materials accumulate in the conveying trough, the cover plate component can be pushed to open; the elastic connecting piece is connected to the cover plate component, and the elastic connecting piece can apply a closing force to the cover plate component. When the material flow rate is too large, the material can push the cover plate component to open to avoid blockage; the elastic connecting piece can continuously apply a closing force, so that the cover plate component has a tendency to close. When the material pushes open the cover plate component, the cover plate can still be pressed against the surface of the material, thereby avoiding material overflow; the elastic connecting piece can automatically apply a closing force, thus having a lower labor cost.

Description

Technical Field

[0001] The present invention relates to the technical field of screw conveyors, and particularly relates 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 a water plant, a screw conveyor is usually used to convey materials (the materials include sludge and solid substances such as gravel and garbage doped in the sludge). However, the supply amount of the materials is not stable, so the conveying amount of the screw conveyor for sludge is also unstable.

[0003] If the screw conveyor is not provided with a cover plate, the materials with a sudden increase in flow rate will overflow from the top opening position of the screw conveyor, resulting in loss. If a cover plate is provided, it is easy to cause material blockage or even jam the screw conveyor. Subsequently, the user needs to remove the cover plate for maintenance, which reduces the work efficiency. In the prior art, there is a screw conveyor with a quickly detachable cover plate, but it requires a lot of manual participation and cannot avoid the blockage problem at the root. Summary of the Invention

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

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

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

[0007] As a further optimized solution of the present invention, the conveying module further includes a feeding screw, a driving motor, and a support frame; the feeding screw is rotatably arranged in the conveying trough, and the output shaft of the driving motor is connected to the feeding screw; the support frame is installed at the bottom and / or the outer side wall position of the conveying component; the housing of the driving motor is connected to the conveying component and / or the support frame.

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

[0009] As a further optimized solution of the present invention, the conveying module is provided with a feed inlet and a discharge outlet, and the feed inlet and the discharge outlet are respectively communicated with both ends of the conveying trough.

[0010] As a further optimized solution 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 component or the outer edge of the top surface of the support frame; the second plate body is vertically and fixedly installed at the outer edge position of the top surface of the first plate body; the elastic connecting piece is hinged to the top end of the second plate body.

[0011] As a further optimized solution of the present invention, the elastic connecting piece includes a telescopic rod, a sleeve and a compression spring; the opening and closing module further 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 sleeve; a retaining ring is fixedly installed on the outer surface of the end of the telescopic rod close to the second plate body, the compression spring is sleeved on the outer circumference of the telescopic rod, and both ends of the compression spring are respectively pressed against the retaining ring and the sleeve; the adjusting component is connected to the sleeve; the adjusting component is connected to the conveying component and / or the support frame.

[0012] As a further optimized solution of the present invention, the adjusting component includes a third plate body and an adjusting rod; the third plate body is fixedly connected to the conveying component and / or the support frame; the top end of the adjusting rod is hinged to the sleeve, and the middle part of the adjusting rod is hinged to the third plate body; the adjusting rod is provided with a jack, and the third plate body is provided with a number of arc-shaped arranged gear holes; the gear holes are adapted to the jack; when the adjusting rod rotates relative to the third plate body, the jack can be selectively aligned and locked with one of the number of gear holes.

[0013] As a further optimized solution of the present invention, the opening and closing modules are arranged in pairs at the top opening position of the conveying trough; the two opening and closing modules in a pair are arranged in an axisymmetric shape with the center line of the top opening of the conveying trough as the center; there is an accommodation gap between the two opening and closing modules in a pair, and two elastic sealing strips that can overlap each other are arranged in the accommodation gap, and the two elastic sealing strips are respectively connected to the first plate bodies 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 view structural 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] Figure 9 Schematic diagram of the elastic sealing strips fitting each other (I);

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

[0034] Figure 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] Figure 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] Figure 13 It is a schematic diagram of the installation position and structural section of the rear panel;

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

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

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

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

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

[0042] Figure 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 Figures 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 Figures 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 Figures 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 3, the support frame 14 includes a plurality of legs 141 and a plurality of cross braces 142. The upper parts of the legs 141 are fixedly connected to the outer side walls of the arc plates 111 (for example, fixedly connected by bolts or fixedly connected by welding). There are two columns of legs 141, and the two columns of legs 141 are respectively arranged at the two outer side wall positions of the arc plates 111. The adjacent legs 141 are fixedly strengthened by the cross braces 142. The two ends of the cross braces 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 braces 142 are arranged in a grid shape, so as to connect 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 brace 142, thereby reducing the load on the upper parts of the legs 141 and increasing the service life of the present invention.

[0053] Referring to Figure 2 , the conveying module 1 is provided with a feed inlet 101 and a discharge outlet 102. The feed inlet 101 and the discharge outlet 102 are respectively communicated with both ends of the conveying trough 110. The driving motor 13 is arranged at the end of the conveying assembly 11; the feed inlet 101 is arranged at one end of the conveying assembly 11 close to the driving motor 13, and the discharge outlet 102 is arranged at one end of the conveying assembly 11 far from the driving motor 13. The feed inlet 101 is communicated with the upper part of the starting end of the conveying trough 110, and the discharge outlet 102 is communicated with the bottom surface of the end of the conveying trough 110, so as to realize the conveying of materials.

[0054] Referring to Figure 2 And Figure 3 , a funnel-shaped hopper is arranged at the position of the feed inlet 101. The hopper is fixedly connected to the top end 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 communicated with the conveying trough 110.

[0055] Referring to Figure 3 And Figure 4 , the opening and closing module 2 includes a cover plate assembly 21 and an elastic connecting piece 22; the cover plate assembly 21 is rotatably installed at the top opening position of the conveying trough 110. When the materials are piled up in the conveying trough 110, the cover plate assembly 21 can be pushed to rotate outwards to open; after the cover plate assembly 21 is opened, a space for accommodating the piled-up materials can be formed above the conveying trough 110 to increase the fluidity of the materials and avoid blockage.

[0056] Referring to Figure 3 And Figure 4 , the elastic connecting piece 22 is connected to the cover plate assembly 21, and the elastic connecting piece 22 can apply a closing force to the cover plate assembly 21. In order to Figure 4Taking the shown perspective as an example, the stacked material can push the cover plate assembly 21 to rotate counterclockwise, and the elastic connecting piece 22 can push the cover plate assembly 21 so that the cover plate assembly 21 has a tendency to rotate clockwise, thereby making the cover plate assembly 21 close to the stacked material instead of being bounced off, thus avoiding the overflow of the stacked material. After the stacked material drives away, the elastic connecting piece 22 pushes the cover plate assembly 21 so that the cover plate assembly 21 is re-pressed at the opening position on the top surface of the conveying trough 110.

[0057] Referring to Figure 4 and Figure 5 , the cover plate assembly 21 includes a first plate body 211 and a second plate body 212; the first plate body 211 is horizontally 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 support frame 14; the second plate body 212 is vertically and fixedly installed at the outer edge position of the top surface of the first plate body 211. Referring to Figure 4 , since the hinge point is located at 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 inner edge of the top surface of the conveying assembly 11 or the inner edge of the top surface of the support frame 14 can support the 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] Referring to Figure 4 , a plurality of top support rods 1101 are arranged along the width direction at the opening position of the top surface of the conveying trough 110, and the plurality of top support rods 1101 are arranged in parallel. At least two top support rods 1101 are arranged below the first plate body 211, so that the first plate body 211 can be stably pressed on the top support rods 1101, preventing the cover plate assembly 21 from falling into the conveying trough 110 and causing blockage and damage.

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

[0060] Referring to Figures 4 - 6, the elastic connecting member 22 includes a telescopic rod 221, a sleeve 222, and a compression spring 223; the opening and closing module 2 further includes an adjusting assembly 23. The telescopic rod 221 is a multi-section sleeve in a sleeved shape, which is a conventional existing technology in the industry and will not be described in detail here; the telescopic rod 221 is used to adapt to the variable distance between the sleeve 222 and the top of the second plate body 212 when the cover plate assembly 21 rotates. 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 (for example, fixed connection by bolts or fixed connection 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 connection by bolts or fixed connection by cold shrinkage). The compression spring 223 is sleeved on the outer periphery of the telescopic rod 221, and both ends of the compression spring 223 are press-connected to the retaining ring 2211 and the sleeve 222 respectively; the compression spring 223 has a tendency to elongate, so as to apply a thrust force (i.e., the closing force) to the second plate body 212, so that the cover plate assembly 21 has a tendency to close.

[0061] The adjusting assembly 23 is connected to the sleeve 222. The adjusting assembly 23 adjusts the distance between the sleeve 222 and the retaining ring 2211 by changing the position of the sleeve 222, and further changes the compression amount of the compression spring 223, so as to adjust the magnitude of the thrust force applied by the compression spring 223 to the cover plate assembly 21.

[0062] Refer to Figure 5 , the adjusting assembly 23 is connected to the conveying assembly 11 and / or the support frame 14. The conveying assembly 11 and / or the support frame 14 applies a supporting force to the adjusting assembly 23.

[0063] Refer to Figure 5 、 Figure 7 With Figure 8 , the adjusting assembly 23 includes a third plate body 231 and an adjusting rod 232; the edge of the third plate body 231 is fixedly connected to the conveying assembly 11 and / or the support frame 14 (for example, fixed connection by bolts or fixed connection by welding). The top end of the adjusting rod 232 is hinged to the sleeve 222, and the middle part of the adjusting rod 232 is hinged to the third plate body 231. When the user grabs the bottom end of the adjusting rod 232, the adjusting rod 232 can rotate relative to the third plate body 231, and then the sleeve 222 rotates, so as to change the distance between the sleeve 222 and the retaining ring 2211. The adjusting rod 232 is provided with a jack 2321, and the third plate body 231 is provided with a plurality of arc-shaped gear holes 2311; the gear holes 2311 are adapted to the jack 2321; when the adjusting rod 232 rotates relative to the third plate body 231, the jack 2321 can be selectively aligned and communicated with one of the plurality of gear holes 2311 and locked by using the first plug-in member 233 or the second plug-in member 235.

[0064] Refer to Figure 9 With Figure 10, the opening and closing modules 2 are arranged in pairs at the top opening position of the conveying trough 110; the two paired 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 an accommodation gap between the two paired opening and closing modules 2, and two elastic sealing strips 213 that can overlap each other are arranged in the accommodation gap, and the two elastic sealing strips 213 are respectively connected to the first plate bodies 211 on both sides (for example, fixedly connected by bolts or fixedly connected by bonding). Refer to Figure 1 And Figure 2 , there are several pairs of opening and closing modules 2, and several pairs of opening and closing modules 2 are arranged in sequence along the length direction of the conveying component 11, so as to cover the top opening of the conveying trough 110 as much as possible.

[0065] Refer to Figure 11 , the first plug-in member 233 includes a screwing stud 2331 and a screwing fin 2332. The end of the screwing stud 2331 is fixedly installed in the middle of the screwing fin 2332 and is arranged in a T shape (for example, fixedly connected integrally, fixedly connected by welding or fixedly connected by bolts). The inner thread adapted to the screwing stud 2331 is provided in the gear hole 2311. After the screwing stud 2331 penetrates the jack 2321, it can be screwed into the gear hole 2311, so as to realize the locking of the jack 2321 and the corresponding gear hole 2311, that is, the locking of the inclination angle of the adjusting rod 232, and avoid the problem that the first plug-in member 233 is disengaged due to the vibration of the equipment generated during production. The user can conveniently rotate the screwing stud 2331 by grasping the screwing fin 2332, so as to realize the screwing in and screwing out of the screwing stud 2331.

[0066] Refer to Figure 12 , the second plug-in member 235 includes a plugging column 2351 and a plugging fin 2352. The end of the plugging column 2351 is fixedly installed in the middle of the plugging fin 2352 and is arranged in a T shape (for example, fixedly connected integrally, fixedly connected by welding or fixedly connected by bolts). The plugging column 2351 can be adapted to be inserted into the jack 2321 and the gear hole 2311; a magnetic attracting end 23511 is fixedly installed at one end of the plugging column 2351 away from the plugging fin 2352 (for example, fixedly connected by bolts), and a rear plate 234 is fixedly installed at the side wall position of the third plate body 231 away from the adjusting rod 232 (for example, fixedly connected by bolts). The rear plate 234 can block the gear hole 2311. After the plugging column 2351 is inserted into the jack 2321 and the gear hole 2311, the magnetic attracting end 23511 can adsorb with the rear plate 234, so as to realize the locking of the jack 2321 and the corresponding gear hole 2311, that is, the locking of the inclination angle of the adjusting rod 232, and avoid the problem that the first plug-in member 233 is disengaged due to the vibration of the equipment generated during production. Refer to Figure 13 And Figure 14, both the jack 2321 and the gear hole 2311 are inclined. One end of the jack 2321 close to the rear plate 234 is inclined downward, and one end of the gear hole 2311 close to the rear plate 234 is inclined downward. Then the second plug-in member 235 can be inserted into the jack 2321 and the gear 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 self-weight and magnetic attraction of the second plug-in member 235, the second plug-in member 235 will not bounce out of the jack 2321 and the gear hole 2311, thus ensuring the limiting stability of the adjusting rod 232. Refer to Figure 13 , a plurality of inclined holes 2341 are provided on the side wall of the rear plate 234 close to the third plate body 231. The inclined holes 2341 are blind holes. The plurality of inclined holes 2341 correspond to, are adapted to, and communicate with the plurality of gear holes 2311 one by one. Then the magnetic attraction end 23511 of the second plug-in member 235 can be inserted into and adsorbed in the inclined holes 2341. The end face of the magnetic attraction end 23511 and the bottom surface of the inclined holes 2341 are mutually adsorbed, and the outer side wall of the magnetic attraction end 23511 and the inner side wall of the inclined holes 2341 are mutually adsorbed, thereby increasing the adsorption area and adsorption force (in the traditional technology, usually the form of mutual adsorption of two end faces is adopted), and further reducing the risk of the second plug-in member 235 coming out. Refer to Figure 13 , the user can conveniently insert the plug-in column 2351 and the magnetic attraction end 23511 into the jack 2321 and the gear hole 2311 by grasping the plug-in fin 2352, 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 as to have as small a weight as possible. Then the center of gravity of the second plug-in member 235 is located on the side of the plug-in column 2351 close to the magnetic attraction end 23511. Then after the second plug-in member 235 is inserted into the adjusting rod 232 and the third plate body 231, the center of gravity of the second plug-in member 235 is located in the inclined jack 2321 and the gear hole 2311. Therefore, it is difficult for the second plug-in member 235 to come out when vibrating. The form of magnetically limiting the second plug-in member 235 has excellent convenience and can save more time and effort during the installation and commissioning or maintenance and commissioning of the present invention.

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

[0068] Part of the third plate body 231 (such as the lower part of the third plate body 231) and part of the adjusting rod 232 (such as the lower part of the adjusting rod 232) are made of non-magnetic materials (such as plastic aluminum alloy, etc.), so as to avoid attracting the magnetic attraction end 23511.

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

[0070] When the entire adjusting rod 232 is made of a magnetic conductive material (such as 45 steel), a second magnetic isolation sleeve (such as a plastic material) is inserted and fixedly arranged in the insertion hole 2321. The magnetic attraction end 23511 and the insertion column 2351 can be inserted into the inner cavity of the second magnetic isolation sleeve, thereby increasing the distance between the magnetic attraction 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 means of bonding or clamping.

[0072] The rear plate 234 is made of an iron-containing metal material (such as 45 steel), and the magnetic attraction end 23511 is made of a permanent magnetic material (such as an aluminum-nickel-cobalt series permanent magnetic alloy, an iron-chromium-cobalt series permanent magnetic alloy, a permanent ferrite, etc.).

[0073] Refer to Figure 14 , the rear plate 234 has a U-shaped structure to adapt to the layout position of the gear position hole 2311, so as to minimize the mass of the rear plate 234, thereby reducing the cost of the present invention.

[0074] Each single cover plate assembly 21 is at least connected with two elastic connectors 22. The two elastic connectors 22 are respectively arranged at both ends of the cover plate assembly 21, so as to ensure the balanced force of the cover plate assembly 21 and avoid the problem of jamming due to eccentric loading.

[0075] Refer to Figure 15 And Figure 16 , a vertical pulling column 214 is arranged at the outer edge position of the top end of the conveying assembly 11. The pulling column 214 is fixedly connected with the support frame 14 or the conveying assembly (such as fixedly connected by bolts or fixedly connected by welding). The top end of the pulling column 214 is higher than the top end of the second plate body 212. One end edge of the first plate body 211 away from the pulling column 214 is connected with the top end of the pulling column 214 through a pulling rope 215. The pulling rope 215 is a flexible rope body (such as a nylon rope, a hemp rope, etc.). The pulling rope 215 is used to apply a pulling force to the first plate body 211, thereby preventing the first plate body 211 from turning inward into the conveying groove 110. At the same time, it can also reduce the load borne by the hinge at the end of the first plate body 211 (this load comes from the weight of the first plate body 211), and avoid the overload failure or detachment of the hinge, thereby improving the service life of the present invention. Since the pulling rope 215 is a flexible rope body, the pulling rope 215 will not hinder the opening of the first plate body 211, thereby ensuring the functional integrity of the present invention. Refer toFigure 16 For a single first plate body 211, at least two latching columns 214 and two lashing ropes 215 are used for latching; a relief groove 21101 is provided at the edge position of the first plate body 211, the latching columns 214 are inserted into the relief groove 21101, and a relief gap 21102 is provided between the latching columns 214 and the relief groove 21101. The relief gap 21102 is located inside the latching columns 214, so as to provide a receiving space for the rotation of the vertical plate and prevent the latching columns 214 from jamming the first plate body 211.

[0076] Refer to Figure 17 A thin film 21103 (fixed by bonding, for example) is provided on the lower surface of the first plate body 211. The thin film 21103 can cover the bottom surface of the relief gap 21102, so as to prevent materials from flowing out through the relief gap 21102 and prevent materials from flowing into the relief gap 21102 (preventing the dried sludge from getting stuck in the relief gap 21102 and causing the problem that the first plate body 211 cannot rotate). The bottom end of the thin film 21103 is fixedly bonded to the outer side wall of the conveying assembly 11. In this embodiment, the hinge at the end of the first plate body 211 needs to be connected to the support frame 14 (instead of being connected to the conveying assembly 11), and the latching columns 214 are connected to the support frame 14 (instead of being connected to the conveying assembly 11), so as to achieve the relief for the thin film 21103. The thin film 21103 is a flexible thin film 21103, such as a plastic thin film 21103, so as to have a certain bending ability; the bottom end of the thin film 21103 is clamped and fixed by the support frame 14 and the conveying assembly 11. Refer to Figure 17 And Figure 18 The thin film 21103 includes a horizontally arranged portion 21103a and a vertically arranged portion 21103b that are connected to each other and can rotate relative to each other. The horizontally arranged portion 21103a is arranged on the lower surface of the first plate body 211 and seals the bottom surface of the relief gap 21102, and the vertically arranged portion 21103b is arranged between the support frame 14 (the leg 141 thereof) and the conveying assembly 11, so as to isolate the relief groove 21101 from the conveying groove 110, prevent the materials in the conveying groove 110 from flowing into the conveying groove 110, and ensure the rotatability of the first plate body 211.

[0077] Taking Figure 17 the perspective shown as an example, combined with Figure 18 when the first plate body 211 rotates counterclockwise to open, the horizontally arranged portion 21103a arranged on the lower surface of the first plate body 211 will not impact and squeeze the latching columns 214; if the horizontally arranged portion 21103a is arranged on the top surface of the relief groove 21101, then as the first plate body 211 rotates, the edge of the horizontally arranged portion 21103a will gradually squeeze the latching columns 214, causing wrinkles to form at the edge of the horizontally arranged portion 21103a. After multiple squeezes, the wrinkles are difficult to rebound, and a gap will be formed between the horizontally arranged portion 21103a and the latching columns 214, resulting in material leakage.

[0078] Refer toFigure 19 , the latching post 214 and the relief groove 21101 are both provided inside the second plate body 212; when the first plate body 211 is placed horizontally, the second plate body 212 abuts against the latching post 214, so that the first plate body 211 can be maintained in the horizontal state without the need for the pull rope 215, 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 extending the service life of the present invention.

[0079] An adjustment method for a screw conveyor with a flexible opening and closing cover plate: Rotate the adjusting rod 232 to selectively align the jack 2321 with one of several gear holes 2311 and lock it, which can adjust the closing force exerted by the elastic connecting member 22 on the cover plate assembly 21.

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

[0081] The structure of the present invention is simple and the function is reliable. When the material flow rate is too large, it can push the cover plate assembly 21 to open, thus avoiding blockage; the elastic connecting member 22 can continuously exert a closing force on the cover plate assembly 21, making the cover plate assembly 21 tend to close. When the material pushes open the cover plate assembly 21, the cover plate can still be pressed against the surface of the material, thus preventing material overflow; the elastic connecting member 22 can automatically exert a closing force on the cover plate assembly 21 without human intervention, resulting in a lower labor cost.

[0082] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0083] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In summary, for those skilled in the art, based on 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) is rotatably mounted at the top opening 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); 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 mounted 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); 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 circumference 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); The adjustment assembly (23) comprises a third plate (231) and an adjustment rod (232); the third plate (231) is fixedly connected to the conveying assembly (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 (231); the adjustment rod (232) is provided with a plug hole (2321), and the third plate (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 (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); A vertical pulling column (214) is provided at the outer edge of the top end of the conveying component (11); an edge of the first plate (211) away from the pulling column (214) is connected to the top end of the pulling column (214) via a pull rope (215); a clearance groove (21101) is provided at the edge of the first plate (211); the pulling column (214) is inserted into the clearance groove (21101); a clearance gap (21102) is provided between the pulling column (214) and the clearance groove (21101); the clearance gap (21102) is located on the inner side of the pulling 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 provided 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 provided between the support frame (14) and the conveying assembly (11), thereby achieving isolation of the clearance groove (21101) from the conveying groove (110).

2. The screw conveyor with a flexible opening and closing cover plate according to claim 1 is characterized in that: The conveying module (1) further comprises 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 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.

6. A method for adjusting a screw conveyor with a flexible opening and closing cover according to claim 5, 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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