Orifice material collecting sieve and multistage discharging system based on ultra-deep vertical shaft

Abstract

The invention discloses an orifice material collecting screen and a multistage discharging system based on an ultra-deep vertical shaft, the orifice material collecting screen comprises a material screen shell, a screen mesh component and a hanging and pulling component, and the top and the bottom of the material screen shell are open; the screen mesh component is connected into the material screen shell in a shaking mode. The hanging and pulling component is located above the material screen shell, and one end of the hanging and pulling component is movably connected with the middle of the screen mesh component. The system comprises an orifice material collecting sieve and a plurality of spiral elephant trunk joints, the spiral elephant trunk joints are sequentially and detachably connected in an end-to-end mode, the section of each spiral elephant trunk joint is in a square shape, and the orifice material collecting sieve is connected to the top of the topmost spiral elephant trunk joint. The automatic material screening device has the beneficial effects that when concrete enters the material screening component, the material screen is unbalanced and then shakes, automatic material screening is achieved, special manual material screening is replaced, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of engineering construction structures, and in particular to an orifice aggregate screen and a multi-stage material discharge system based on an ultra-deep shaft. Background Art

[0002] There are many water diversion tunnels in my country, among which water diversion and power generation tunnels are generally pressurized tunnels. For high head and high drop water diversion and power generation tunnels, most of them are equipped with vertical shafts. There are many types of vertical shafts, and most of them are composed of three parts: upper curved section, straight section and lower curved section. Whether the concrete feeding system is appropriate is the key to the successful construction of such high drop well chamber engineering.

[0003] At present, a concrete screen is installed at the inlet of the concrete feeding system, through which large-size stones in the concrete delivered from the mixer truck are screened out. When the concrete is delivered into the feeding system, a dedicated person uses a handheld tool to move the concrete to help the concrete fall through the sieve holes of the concrete screen into the feeding system, which results in high labor intensity for the workers and increases labor costs. Summary of the invention

[0004] The technical problem to be solved by the present invention is that currently, it takes special personnel to assist in dropping concrete from the sieve holes of a concrete screen into a feeding system, which results in high labor costs. The purpose is to provide an orifice aggregate screen and a multi-stage feeding system based on an ultra-deep shaft, so that when concrete enters the screen component, the screen is unbalanced and then shakes, thereby achieving automatic screening, replacing specially set manual screening and reducing labor costs.

[0005] The present invention is achieved through the following technical solutions:

[0006] A porous aggregate screen comprises a screen shell, a screen component and a suspension component, wherein the top and bottom of the screen shell are open; the screen component is movably connected to the screen shell; the suspension component is located above the screen shell, and one end of the suspension component is movably connected to the middle of the screen component.

[0007] The beneficial effect of the present invention is that by setting the top and bottom of the material screen shell to be open, it is convenient for concrete to enter from the top of the material screen shell and enter into the multi-stage feeding system from the bottom of the material screen shell, and then the screen component is connected to the material screen shell in a swingable manner, so that the concrete transported from the mixer truck can directly enter the material screen component. When the concrete enters the material screen component, the material screen will become unbalanced and then shake, so that concrete that does not exceed the screen hole diameter of the material screen component enters the feeding system, preventing the segregation of stone with too large particle size in the feeding system, ensuring the quality of concrete, and preventing concrete segregation. In addition, by providing a hanging component and arranging the hanging component above the material screen shell, the free end of the hanging component is slidably connected to the middle part of the screen component, so that the hanging component provides a pulling force to the screen component, ensuring that the screen component will not fall when screening concrete, thereby realizing shaking automatic screening, replacing the special manual screening, and reducing labor costs. The orifice material screen of the present invention also has the advantages of simple structure, low production difficulty and low production cost.

[0008] In some embodiments, the screen member includes an elastic leak-proof screen and a bottom concrete screen, one side of the elastic leak-proof screen is continuously connected to the periphery of the bottom concrete screen, and the other side is continuously connected to a circle of the inner side wall of the material screen shell. By providing an elastic leak-proof screen, and continuously connecting the two sides of the elastic leak-proof screen to the periphery of the bottom concrete screen and a circle on the inner side wall of the material screen shell respectively, and utilizing the elastic characteristics of the elastic leak-proof screen, it is possible to ensure that the bottom concrete screen can automatically shake when screening concrete, and also prevent concrete from falling directly from the outside of the bottom concrete screen into the multi-stage feeding system.

[0009] In some embodiments, the area of ​​the bottom concrete screen is smaller than the cavity area of ​​the cross section of the material screen housing at the space where the bottom concrete screen can shake, the bottom concrete screen is in the shape of a square or circular plate as a whole, and the cross section of the material screen housing is in the shape of a square or circular as a whole. By making the area of ​​the bottom concrete screen smaller than the cavity area of ​​the cross section of the material screen housing at the space where the bottom concrete screen can shake, it is convenient to ensure the shaking space of the bottom concrete screen in the material screen housing and ensure the shaking amplitude of the bottom concrete screen, so that the concrete can be automatically screened out when shaking.

[0010] In some embodiments, the bottom concrete screen includes a plurality of screen bars, the cross section of the screen bars is circular, the plurality of screen bars are arranged side by side, and the screen bars form long strip screen holes, and the screen bars are made of round steel bars or round steel pipes. By arranging the screen bars side by side, the gaps between the screen bars form long strip screen holes, and the concrete is screened, and the screen bars are made of round steel bars or round steel pipes, so as to reduce the contact area of ​​the screen bars with the concrete in the screen holes, and improve the efficiency of screening the concrete.

[0011] In some embodiments, the elastic leak-proof screen gradually tilts from top to bottom toward the inner center of the material screen shell. When the bottom concrete screen is screening concrete, the elastic leak-proof screen is in a folded state along the height direction of the material screen shell. The screen holes of the elastic leak-proof screen are square holes, and the elastic leak-proof screen is made of rubber or silicone. By gradually tilting the elastic leak-proof screen from top to bottom toward the inner center of the material screen shell, a certain distance is made between the elastic leak-proof screen and the inner wall of the bottom concrete screen and the material screen shell, so as to ensure that the bottom concrete screen has enough shaking space and concrete screening space, and when the bottom concrete screen is in a state of screening concrete, the elastic leak-proof screen is in a folded state along the height direction of the material screen shell, and when the bottom concrete screen shakes, the elastic leak-proof screen has no pulling force on the bottom concrete screen, or has a smaller pulling force, so as to ensure that the bottom concrete screen has the best shaking effect; the screen holes of the elastic leak-proof screen are also set to square holes, and the elastic leak-proof screen is made of rubber or silicone, so as to ensure that the elastic leak-proof screen has sufficient elasticity, and the pulling force generated when the bottom concrete screen shakes is smaller, further ensuring that the bottom concrete screen has the best shaking effect.

[0012] In some embodiments, the suspension member includes a support frame and a pull rod. The support frame is in an N-shape as a whole. The two ends of the bottom of the support frame are respectively connected to the top of the material screen housing. One end of the pull rod is connected to the middle of the support frame, and the other end is spherically hinged to the center of the bottom concrete screen. The support frame is provided to provide a supporting force to the pull rod, and the free end of the support rod is hinged to the center of the bottom concrete screen to ensure that the bottom concrete screen can swing at the hinge. When concrete enters the bottom concrete screen, the bottom concrete screen is unbalanced, and then the bottom concrete screen automatically swings, and the concrete is automatically shaken to screen the large-particle stone in the concrete.

[0013] In some embodiments, the suspension member includes a support frame, a pull rod, a guide rod and a compression spring. The support frame is in an N-shape as a whole. The two ends of the bottom of the support frame are respectively connected to the top of the material screen housing. One end of the pull rod is connected to the middle of the support frame, and the other end is fixedly connected to the guide rod. The compression spring and the bottom concrete screen can be slidably mounted on the guide rod. There is a gap between the connecting hole of the guide rod and the bottom concrete screen. The bottom concrete screen is located at the upper end of the compression spring. By fixing one end of the guide rod to the free end of the pull rod, and the bottom concrete screen and the compression spring are slidably mounted on the guide rod from top to bottom in sequence, and there is a gap between the connecting hole of the guide rod and the bottom concrete screen, it is convenient for the bottom concrete screen to shake in the gap space between the connecting hole of the bottom concrete screen and the guide rod, so as to realize automatic screening of concrete. In addition, by setting a compression spring, the bottom concrete screen is vibrated up and down (shaking the concrete) by the reset force of the compression spring, so as to further improve the screening effect of concrete.

[0014] In some embodiments, a screen hinge is provided at one end of the guide rod near the pull rod, the screen hinge is composed of several round balls connected end to end, the bottom concrete screen can be slidably mounted on the screen hinge, the thickness of the connection hole on the bottom concrete screen is 0.2 times to 0.3 times the diameter of the round ball, and the diameter of the connection hole is larger than the diameter of the round ball. By providing a screen hinge composed of several round balls connected end to end at one end of the guide rod near the pull rod, and setting the thickness of the connection hole matched with the screen hinge to 0.2 times to 0.3 times the diameter of the round ball, so that the gap between one or both ends of the upper and lower ends of the connection hole and the round ball is increased, the bottom concrete screen can swing more than when matched with the columnar structure, thereby improving the efficiency of brushing concrete.

[0015] In some embodiments, the compression spring is a conical compression spring, the small end of which can be slidably mounted on the hinged portion of the screen, and a semicircular protrusion structure is provided on the bottom concrete screen, the semicircular protrusion structure is located at the lower end of the connecting hole, and a avoidance hole coaxial with the connecting hole is provided on the semicircular protrusion structure, the diameter of the avoidance hole is larger than the diameter of the connecting hole, and the small end of the conical compression spring abuts against the semicircular protrusion structure. By setting the compression spring to a cone and abutting the small end of the cone against the semicircular protrusion structure on the bottom concrete screen, the contact area between the spring and the bottom concrete screen is reduced, the swing amplitude of the bottom concrete screen is increased, and the continuity of the bottom concrete screen when swinging is ensured by the cooperation between the semicircular protrusion and the circular cavity, so that large-size crushed stones can run regularly and the effect of screening large-size crushed stones can be improved.

[0016] The present invention also provides a multi-stage material discharge system based on an ultra-deep shaft, including an orifice aggregate screen, a plurality of spiral chute sections, the spiral chute sections are detachably connected end to end in sequence, the cross section of the spiral chute section is a square shape, and the orifice aggregate screen is connected to the top of the spiral chute section located at the top. By setting a plurality of spiral chute sections, the spiral chute sections are detachably connected end to end in sequence, and the chute is set in a spiral shape, it is convenient to reduce the falling speed of concrete, and prevent the problem of segregation of concrete when entering the warehouse with a high drop. The cross section of the spiral chute section is also set in a square shape, which is convenient for assembly and fixing on the supporting formwork, reducing the difficulty of installing the spiral chute section.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. The support frame provides supporting force for the pull rod, and hinges the free end of the support rod with the center of the bottom concrete screen, so as to ensure that the bottom concrete screen can swing at the hinge. When concrete enters the bottom concrete screen, the bottom concrete screen is unbalanced, and then the bottom concrete screen swings automatically, and the concrete is automatically shaken to screen the large-particle stone in the concrete, instead of setting up special manual screening, thereby reducing labor costs.

[0019] 2. The orifice material screen of the present invention also has the advantages of simple structure, low production difficulty and low production cost.

[0020] 3. When the bottom concrete screen is screening concrete, the elastic leak-proof screen is in a folded state along the height direction of the material screen shell. When the bottom concrete screen shakes, the elastic leak-proof screen has no pulling force on the bottom concrete screen, or has a smaller pulling force, so as to ensure that the bottom concrete screen has the best shaking effect.

[0021] 4. By fixing one end of the guide rod to the free end of the pull rod, and slidably sleeved the bottom concrete screen and the compression spring on the guide rod from top to bottom in sequence, and setting a gap between the guide rod and the connecting hole on the bottom concrete screen, the bottom concrete screen can be shaken in the gap space between the connecting hole of the bottom concrete screen and the guide rod, and by setting a compression spring, the bottom concrete screen is vibrated up and down by utilizing the restoring force of the compression spring, and the vibration of the compression spring is further improved to further improve the screening effect of the concrete.

[0022] 5. By setting an elastic leak-proof screen and continuously connecting the two sides of the elastic leak-proof screen with the four sides of the bottom concrete screen and a circle on the inner wall of the screen shell, the elastic leak-proof screen is used to ensure that the bottom concrete screen can automatically shake when screening concrete, and can also prevent concrete from falling directly from the outside of the bottom concrete screen into the multi-stage feeding system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] In the figure:

[0025] Figure 1 It is a structural diagram of the present invention;

[0026] Figure 2 It is a partial structural diagram of the present invention;

[0027] Figure 3 For the present invention Figure 2 The structural diagram from the top of the middle;

[0028] Figure 4 It is a partial structural diagram of the present invention;

[0029] Figure 5 This is a structural diagram of the present invention when the compression spring is set to a conical shape;

[0030] Figure 6 For the present invention Figure 5 The structural diagram after removing the compression spring;

[0031] Figure 7 For the present invention Figure 3 Enlarged view of section K.

[0032] Marks and corresponding parts names in the attached drawings:

[0033] The material screen housing 10, the connecting plate 11, the supporting frame 13, the pulling rod 14, the guiding rod 15, the screen hinge part 151, the elastic leak-proof screen 20, the bottom concrete screen 21, the screen rod 211, the compression spring 22, the limiting plate 23, and the semicircular protruding structure 24. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0035] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” 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. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0037] The terms "first" and "second" used in the present invention are only used to distinguish the corresponding components for the sake of clarity of description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connected" used in this article can be directly connected or indirectly connected via other components without special explanation.

[0038] Example 1

[0039] The present invention provides a hole aggregate screen, see Figure 1-Figure 7, including a material screen housing 10, a screen member and a suspension member, the top and bottom of the material screen housing 10 are both open; the screen member can be connected to the material screen housing 10 in a swingable manner; the suspension member is located above the material screen housing 10, and one end of the suspension member is movably connected to the middle of the screen member. By providing a suspension member, and setting the suspension member above the material screen housing 10, the free end of the suspension member is slidably connected to the middle of the screen member, so that the suspension member provides a pulling force to the screen member, ensuring that the screen member will not fall when screening concrete, and realizing automatic screening by shaking, instead of specially setting up manual screening, reducing labor costs. The orifice material screen of the present invention also has the advantages of simple structure, low production difficulty and low production cost.

[0040] See also Figure 1 The screen member includes an elastic leak-proof screen 20 and a bottom concrete screen 21. One side of the elastic leak-proof screen 20 is continuously connected to the periphery of the bottom concrete screen 21, and the other side is continuously connected to a circle of the inner wall of the material screen housing 10. By providing the elastic leak-proof screen 20, and continuously connecting the two sides of the elastic leak-proof screen 20 to the periphery of the bottom concrete screen 21 and a circle on the inner wall of the material screen housing 10 respectively, and utilizing the elastic characteristics of the elastic leak-proof screen 20, it is possible to ensure that the bottom concrete screen 21 can automatically shake when screening concrete, and also prevent the concrete from falling directly from the outside of the bottom concrete screen 21 into the multi-stage feeding system.

[0041] See also Figure 1 and Figure 2 The area of ​​the bottom concrete screen 21 is smaller than the cavity area of ​​the cross section of the material screen housing 10 at the swaying space of the bottom concrete screen 21. The bottom concrete screen 21 is in the shape of a square or circular plate as a whole, and the cross section of the material screen housing 10 is in the shape of a square or circular as a whole. By making the area of ​​the bottom concrete screen 21 smaller than the cavity area of ​​the cross section of the material screen housing 10 at the swaying space of the bottom concrete screen 21, it is convenient to ensure the swaying space of the bottom concrete screen 21 in the material screen housing 10 and ensure the swaying amplitude of the bottom concrete screen 21, so that the concrete can be automatically screened out when shaking.

[0042] See also Figure 1 and Figure 2The bottom concrete screen 21 includes a plurality of screen bars 211, the cross section of the screen bars 211 is circular, and the plurality of screen bars 211 are arranged side by side, and a long strip screen hole is formed between the screen bars 211, and the screen bars 211 are made of round steel bars or round steel pipes. By arranging the screen bars 211 side by side, the gaps between the screen bars 211 form a long strip screen hole, and the concrete is screened. The screen bars 211 are made of round steel bars or round steel pipes, and the contact area of ​​the screen bars 211 on the concrete in the screen hole is reduced, thereby improving the efficiency of screening the concrete.

[0043] See also Figure 1 The elastic leak-proof screen 20 gradually tilts from top to bottom toward the inner center of the material screen shell 10. When the bottom concrete screen 21 is screening concrete, the elastic leak-proof screen 20 is in a folded state along the height direction of the material screen shell 10. The sieve holes of the elastic leak-proof screen 20 are square holes, and the elastic leak-proof screen 20 is made of rubber or silicone. By gradually tilting the elastic leak-proof screen 20 from top to bottom toward the inner center of the material screen shell 10, a certain distance is made between the elastic leak-proof screen 20 and the bottom concrete screen 21 and the inner side wall of the material screen shell 10, so as to ensure that the bottom concrete screen 21 has enough shaking space and concrete falling space, and when the bottom concrete screen 21 is in a state of falling concrete, the elastic leak-proof screen 20 is in a folded state along the height direction of the material screen shell 10, and when the bottom concrete screen 21 is shaken, the elastic leak-proof screen 20 has no pulling force on the bottom concrete screen 21, or has a small pulling force, so as to ensure that the bottom concrete screen 21 has the best shaking effect; the screen holes of the elastic leak-proof screen 20 are also set to square holes, and the elastic leak-proof screen 20 is made of rubber or silicone, so as to ensure that the elastic leak-proof screen 20 has sufficient elasticity, and the pulling force generated when the bottom concrete screen 21 is shaken is small, further ensuring that the bottom concrete screen 21 has the best shaking effect.

[0044] See also Figure 1The suspension member includes a support frame 13 and a pull rod 14. The support frame 13 is in an N-shape as a whole. The two ends of the bottom of the support frame 13 are respectively connected to the top of the material screen housing 10. One end of the pull rod 14 is connected to the middle of the support frame 13, and the other end is spherically hinged to the center of the bottom concrete screen 21. By setting the support frame 13 to provide support force to the pull rod 14, and hinge the free end of the support rod to the center of the bottom concrete screen 21, it is convenient to ensure that the bottom concrete screen 21 can swing at the hinge. When concrete enters the bottom concrete screen 21, the bottom concrete screen 21 is unbalanced, and then the bottom concrete screen 21 automatically swings, the concrete automatically swings, and the large-particle-diameter stones in the concrete are screened. Specifically, the lower end of the pull rod 14 can be set as a chain, which is convenient for taking out the large-particle-diameter stones by lifting the chain to move the bottom concrete screen 21 upward to take out the large-particle-diameter stones. The spherical hinge in the present invention is composed of two parts: a spherical head and a seat, which are connected by a spherical contact surface, which is a conventional method in the field and will not be described here.

[0045] See also Figure 1-Figure 5 The suspension component includes a support frame 13, a pull rod 14, a guide rod 15 and a compression spring 22. The support frame 13 is in an N shape as a whole. The two ends of the bottom of the support frame 13 are respectively connected to the top of the material screen housing 10. One end of the pull rod 14 is connected to the middle of the support frame 13, and the other end is fixedly connected to the guide rod 15. The compression spring 22 and the bottom concrete screen 21 can be slidably mounted on the guide rod 15. A gap is set between the guide rod 15 and the connecting hole on the bottom concrete screen 21, and the bottom concrete screen 21 is located at the upper end of the compression spring 22. By fixing one end of the guide rod 15 to the free end of the pull rod 14, and slidably sleeved the bottom concrete screen 21 and the compression spring 22 on the guide rod 15 from top to bottom in sequence, and setting a gap between the guide rod 15 and the connecting hole on the bottom concrete screen 21, the bottom concrete screen 21 can be easily shaken in the gap space between the connecting hole of the bottom concrete screen 21 and the guide rod 15, so as to automatically screen out the concrete. In addition, by setting the compression spring 22, the reset force of the compression spring 22 is utilized to make the bottom concrete screen 21 vibrate up and down, and the vibration of the compression spring 22 further improves the screening effect of the concrete.

[0046] Specifically, the upper end of the guide rod 15 in the present invention can be set as a chain structure connected by several spheres, so that the connecting hole of the bottom concrete screen 21 constitutes a structure similar to a spherical hinge. On the basis of having a vibration effect, the shaking amplitude of the bottom concrete screen 21 is increased to further improve the effect of screening concrete.

[0047] See also Figure 4 In the present invention, the compression spring 22 can be set as a long strip or conical compression spring 22. When set as a conical compression spring 22, the small head of the conical compression spring 22 is connected to the pull rod 14 to reduce the contact area between the compression spring 22 and the bottom concrete screen 21, thereby increasing the shaking amplitude of the bottom concrete screen 21.

[0048] See also Figure 3-Figure 4 A limiting plate 23 is provided at one end of the guide rod 15 away from the pull rod 14, and the limiting plate 23 abuts against the bottom of the compression spring 22. By providing the limiting plate 23, a supporting force is provided for the compression spring 22.

[0049] See also Figure 3-Figure 4 , further comprising a connecting plate 11, the connecting plates 11 comprising at least two, the two connecting plates 11 being respectively connected to the outside of the material screen housing 10 and being located at opposite sides of the material screen housing 10, the connecting plates 11 being provided with connecting holes, the bolts passing through the connecting holes are connected to the top of the material discharge pipe. By providing the connecting plates 11, it is convenient to connect the connecting plates 11 with the material screen housing 10, to facilitate installation and disassembly, and to improve the versatility of the orifice aggregate screen.

[0050] See also Figure 5 and Figure 6 The end of the guide rod 15 close to the pull rod 14 is provided with a screen hinge 151, the screen hinge 151 is composed of a plurality of round balls connected end to end, the bottom concrete screen 21 can be slidably mounted on the screen hinge 151, the thickness of the connection hole on the bottom concrete screen 21 is 0.2 times to 0.3 times the diameter of the round ball, and the diameter of the connection hole is greater than the diameter of the round ball. By providing a screen hinge 151 composed of a plurality of round balls connected end to end at one end of the guide rod 15 close to the pull rod 14, and setting the thickness of the connection hole matched with the screen hinge 151 to 0.2 times to 0.3 times the diameter of the round ball, so that the gap between one or both ends of the upper and lower ends of the connection hole and the round ball is increased, the bottom concrete screen 21 can swing more than when matched with the columnar structure, thereby improving the efficiency of brushing concrete.

[0051] See also Figure 3 and 7The compression spring 22 adopts a conical compression spring 22, and the small end of the conical compression spring 22 can be slidably mounted on the screen hinge 151. A semicircular protrusion structure 24 is provided on the bottom concrete screen 21, and the semicircular protrusion structure 24 is located at the lower end of the connecting hole. A avoidance hole coaxial with the connecting hole is provided on the semicircular protrusion structure 24. A avoidance hole coaxial with the connecting hole is provided on the semicircular protrusion structure 24, and the diameter of the avoidance hole is larger than the diameter of the connecting hole. The small end of the conical compression spring 22 abuts against the semicircular protrusion structure 24. By setting the compression spring 22 to a cone and making the small end of the cone abut against the semicircular protrusion structure 24 on the bottom concrete screen 21, the contact area between the spring and the bottom concrete screen 21 is reduced, the swing amplitude of the bottom concrete screen 21 is increased, and the continuity of the bottom concrete screen 21 during swinging is ensured through the cooperation between the semicircular protrusion and the circular cavity, so that large-size gravel can run regularly and the effect of screening large-size gravel is improved.

[0052] Example 2

[0053] The present invention also provides a multi-stage material discharge system based on an ultra-deep shaft, including an orifice aggregate screen, a plurality of spiral chute sections, the spiral chute sections are detachably connected end to end in sequence, the cross section of the spiral chute section is a square shape, and the orifice aggregate screen is connected to the top of the spiral chute section located at the top. By setting a plurality of spiral chute sections, the spiral chute sections are detachably connected end to end in sequence, and the chute is set in a spiral shape, it is convenient to reduce the falling speed of concrete, and prevent the problem of segregation of concrete when entering the warehouse with a high drop. The cross section of the spiral chute section is also set in a square shape, which is convenient for assembly and fixing on the supporting formwork, reducing the difficulty of installing the spiral chute section.

[0054] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An orifice aggregate screen, characterized in that: include: A material screen housing, wherein the top and the bottom of the material screen housing are open; A screen member, the screen member being movably connected within the material screen housing; A hanging member is located above the material screen shell, and one end of the hanging member is movably connected to the middle part of the screen member.

2. The aperture aggregate screen according to claim 1, characterized in that: The screen component comprises an elastic leak-proof screen and a bottom concrete screen. One side of the elastic leak-proof screen is continuously connected to the periphery of the bottom concrete screen, and the other side forms a circle of continuous connection with the inner side wall of the material screen shell.

3. The aperture aggregate screen according to claim 2, characterized in that: The area of ​​the bottom concrete screen is smaller than the cavity area of ​​the cross-section of the material screen shell at the shaking space of the bottom concrete screen. The bottom concrete screen is in the shape of a square or circular plate as a whole, and the cross-section of the material screen shell is in the shape of a square or circular as a whole.

4. The aperture aggregate screen according to claim 2, characterized in that: The bottom concrete screen comprises a plurality of screen rods, the cross section of the screen rods is circular, the plurality of screen rods are arranged side by side, and long strip screen holes are formed between the screen rods. The screen rods are made of steel bars or steel pipes.

5. The aperture aggregate screen according to claim 2, characterized in that: The elastic leak-proof screen gradually tilts toward the inner center of the material screen shell from top to bottom. When the bottom concrete screen is screening concrete, the elastic leak-proof screen is in a folded state along the height direction of the material screen shell. The screen holes of the elastic leak-proof screen are square holes, and the elastic leak-proof screen is made of rubber or silicone.

6. The aperture aggregate screen according to claim 2, characterized in that: The hanging member includes a support frame and a pull rod. The support frame is in an N-shape as a whole. The two ends of the bottom of the support frame are respectively connected to the top of the material screen shell. One end of the pull rod is connected to the middle of the support frame, and the other end is hinged to the center of the bottom concrete screen.

7. The aperture aggregate screen according to claim 2, characterized in that: The hanging component includes a support frame, a pull rod, a guide rod and a compression spring. The support frame is in an N-shape as a whole. The two ends of the bottom of the support frame are respectively connected to the top of the material screen shell. One end of the pull rod is connected to the middle of the support frame, and the other end is fixedly connected to the guide rod. The compression spring and the bottom concrete screen can be slidably mounted on the guide rod. A gap is set between the connecting hole of the guide rod and the bottom concrete screen, and the bottom concrete screen is located at the upper end of the compression spring.

8. The aperture aggregate screen according to claim 7, characterized in that: A screen hinge is provided at one end of the guide rod close to the pull rod, and the screen hinge is composed of several round balls connected end to end. The bottom concrete screen can be slidably mounted on the screen hinge, and the thickness of the connecting hole on the bottom concrete screen is 0.2 times to 0.3 times the diameter of the round ball, and the diameter of the connecting hole is larger than the diameter of the round ball.

9. The aperture aggregate screen according to claim 8, characterized in that: The compression spring adopts a conical compression spring, and the small end of the conical compression spring can be slidably mounted on the hinged part of the screen. A semicircular protrusion structure is arranged on the bottom concrete screen, and the semicircular protrusion structure is located at the lower end of the connecting hole. A avoidance hole coaxial with the connecting hole is arranged on the semicircular protrusion structure, and the diameter of the avoidance hole is larger than the diameter of the connecting hole. The small end of the conical compression spring abuts against the semicircular protrusion structure.

10. A multi-stage material unloading system based on an ultra-deep shaft, characterized in that: It comprises the orifice aggregate screen as described in any one of claims 1-9, and several spiral chute sections, wherein the spiral chute sections are detachably connected end to end in sequence, the cross-section of the spiral chute section is square, and the orifice aggregate screen is connected to the top of the spiral chute section located at the top.

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