A quartz sand classification and crushing device

Abstract

The invention relates to the technical field of quartz sand classification and screening, in particular to a quartz sand classification and crushing device; comprising: a screening mechanism, comprising a base, a feeding pipe and a screen drum; a screen hole adjustment mechanism, comprising a window and a slide rod; an amplitude adjustment mechanism, comprising a feed hopper, a turntable and an eccentric rod; a screen plate and a screen ring surround the screen hole so that the size of the screen hole is adjustable, thereby preventing blockage and meeting the requirements of quartz sand classification and screening, and being compatible with solid particles such as coal, ore and glass, and judging the wear of the screen plate by the resistance value between each screen plate, increasing the opening and the screen hole of the feed port when the material is discharged, thereby preventing blockage, and at the same time, the round table cooperates with the feed hopper for primary crushing and transports upwards through a scraper to avoid the increase of the wear efficiency of the screen hole due to the excessive size of the particles; the oscillation amplitude of the feed pipe is controlled to increase by an amplitude adjustment rod, so that each quartz sand block collides with each other and collides with the inner wall of the feed pipe to be initially crushed, thereby improving the screening efficiency and further preventing blockage.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand classification and screening, in particular to a quartz sand classification and crushing device. Background Art

[0002] Quartz sand is widely used in multiple industries, including glass manufacturing, casting, construction, ceramics, electronics, chemicals, etc. Each industry has different requirements for the particle size, purity and morphology of quartz sand. Through grading and screening, quartz sand products that meet different application requirements can be produced; grading and screening can remove particles that do not meet quality requirements, such as particles that are too large or too small, and particles containing impurities, thereby improving the overall quality of quartz sand, which is especially important for industries that require high-purity quartz sand (such as the electronics and photovoltaic industries); in subsequent processing steps (such as grinding and screening), if the particle size distribution of quartz sand is uniform, the efficiency of these steps can be improved.

[0003] Mechanical vibrating screens or drum screening equipment are usually used in the prior art, which consume a lot of electrical energy to drive the vibration motor or drum to rotate during operation. At the same time, unreasonable design of some equipment increases energy consumption, such as uneven distribution of screen apertures, failure to detect screen damage in time, etc., which will cause the equipment to consume more energy during operation to achieve the expected sorting effect; and frequent equipment failures and shutdowns will also increase energy consumption, because each time the equipment is started, a lot of energy is consumed, and the equipment is in an idling state during maintenance, which will also waste energy. At the same time, solid particles such as coal blocks, slag, and glass blocks in the prior art can also be crushed and graded by a grading screening device, but the size of the screen aperture needs to be adjusted each time the material is changed to meet different usage requirements.

[0004] The Chinese patent with the existing authorization announcement number CN115625039A discloses a quartz sand screening device and a method of using the same, including a support platform, an operating cylinder, and a shaking device. An operating cylinder is provided above the support platform, and a receiving hopper and an electric push rod are provided. The receiving hopper can make all the quartz sand fall into the arc tube when falling, so as to avoid scattering of the quartz sand when falling. When the electric push rod is turned on, the arc tube can be tilted left and right. When the arc tube tilts to the left, smaller quartz sand can fall into the placement cylinder on the left for collection. When it tilts to the right, larger quartz sand can fall into the placement cylinder on the right, thereby satisfying the controllable screening operation of the quartz sand when falling. When the electric slider is turned on, the support frame can be driven to rotate in the annular groove. The electric slider cooperates with the telescopic rod to drive the ball bearing to slide back and forth on the support frame while rotating in an annular direction, so as to realize that the magnetic separation rod under the ball bearing can fully and comprehensively magnetically separate and remove iron from the quartz sand at each location.

[0005] However, the above technical solution cannot adjust the aperture of the screen holes, so the application scenario range is small, and it can only be used for screening of a single material. It is not compatible with commonly used solid particles such as quartz sand, coal blocks, slag, glass blocks, etc. At the same time, when screening solid particles such as quartz sand and coal blocks, it is easy to be blocked or the screen holes are worn, requiring shutdown for maintenance, which increases operating costs. At the same time, the existing screening machine with variable screen aperture cannot monitor whether the screen is damaged. Unreasonable screen aperture design or inappropriate screen material will lead to the ineffective separation of particles, resulting in a large number of misscreening and missed screening. If the vibration frequency and amplitude of the vibrating screening equipment are unstable, it is easy to cause irregular movement of the material on the screen, affecting the screening effect. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the above problems in the prior art, the present invention is proposed.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a quartz sand grading and crushing device, comprising: a screening mechanism, including a base, a feed pipe obliquely arranged on the upper end surface of the base, and a screen cylinder rotatably arranged in the feed pipe, the screen cylinder comprising screen rings arranged in an array along the inner wall of the feed pipe, and the aperture of the screen cylinder changes with the flow rate of the quartz sand entering the feed pipe;

[0009] A sieve hole adjustment mechanism, comprising a window penetrating the outer wall of the sieve ring and a slide bar sliding through the sieve ring, wherein the slide bar slides on the sieve ring along the window;

[0010] The amplitude adjustment mechanism includes a lower hopper movably arranged at the entrance of the conveying pipe, a turntable arranged on the outer wall of the conveying pipe and an eccentric rod slidably arranged in the turntable. When the flow rate of quartz sand in the lower hopper increases, the lower hopper unloading speed increases and drives the eccentric rod to slide outward, thereby increasing the vibration amplitude of the conveying pipe.

[0011] As a preferred solution of the quartz sand grading and crushing device described in the present invention, wherein: the outer wall of the sliding rod located in the middle part of each of the sieve rings is sleeved with a sieve plate, and two adjacent sieve plates and two sieve rings form a sieve hole, and the aperture of the sieve hole decreases when the sieve plates approach each other.

[0012] As a preferred solution of the quartz sand grading and crushing device described in the present invention, wherein: a swing arm is rotatably sleeved on one end of the sliding rod, a ring is provided at the other end of the swing arm, a pressure column is slidably provided on the inner wall of the ring, a sliding column is provided on the inner wall of the ring, and a spiral groove is opened on the outer wall of the pressure column.

[0013] As a preferred solution of the quartz sand grading and crushing device described in the present invention, a first elastic member is further provided between the sleeve ring and the pressure column, the first elastic member pushes the pressure column to slide outward, and the sleeve ring and the first elastic member are rotationally connected.

[0014] As a preferred solution of the quartz sand grading and crushing device of the present invention, wherein: a first connecting rod and a second connecting rod are rotatably provided on the screen plate at the same time, and the first connecting rod and the second connecting rod on two adjacent screen plates are rotatably connected.

[0015] As a preferred solution of the quartz sand grading and crushing device described in the present invention, wherein: the lower end of the lower hopper is connected to the pressure column, the inner wall of the lower hopper is penetrated with a lower opening, a switch plate is rotatably provided in the lower opening, and the switch plate is used to control the opening of the lower opening.

[0016] As a preferred solution of the quartz sand grading and crushing device described in the present invention, the outer wall of the switch plate is provided with a rotating seat, a switch rod is rotatably provided in the rotating seat, a sleeve is rotatably provided on the end surface of the feed pipe, and the end of the switch rod away from the switch plate is rotatably connected to the sleeve.

[0017] As a preferred solution of the quartz sand classification and crushing device of the present invention, wherein: a rotating drum is provided at one end of the sleeve away from the first elastic member, a rotating shaft is provided inside the rotating drum, and the rotating shaft passes through the pressure column;

[0018] One end of the rotating shaft extending into the lower hopper is provided with a truncated cone, and an array of scrapers are provided on the outer wall of the truncated cone, and the scrapers are in a spiral shape.

[0019] As a preferred solution of the quartz sand grading and crushing device of the present invention, wherein: the outer wall of the lower hopper is provided with an amplitude adjustment rod, the amplitude adjustment rod is slidably arranged on the outer wall of the conveying pipe, and an arc-shaped piece is arranged at one end of the amplitude adjustment rod away from the lower hopper;

[0020] The rotating disk is radially provided with an amplitude groove, the eccentric rod is slidably arranged in the amplitude groove, and an eccentric ball is arranged at one end of the eccentric rod sliding out of the amplitude groove.

[0021] As a preferred solution of the quartz sand grading and crushing device of the present invention, a second elastic member is provided between the eccentric rod and the inner wall of the amplitude groove, and the second elastic member pulls the eccentric rod to slide toward the center of the turntable.

[0022] The beneficial effects of the present invention are as follows: the sieve plates and the sieve rings are used to form sieve holes, so that the size of the sieve holes can be adjusted to prevent blockage while meeting the requirements for grading and screening of quartz sand of different sizes and specifications. At the same time, it is compatible with different solid particles such as coal, ore, glass, etc., and has a wider application scenario. The resistance value between each sieve plate is measured by a resistance sensor to judge the wear of the sieve plate, and timely replacement and maintenance are performed. When the number of solid particles is too large, the opening size of the discharge port and the size of the sieve holes are increased to prevent blockage. At the same time, the truncated table and the discharge hopper are used to grind together to perform primary crushing on the sunken large particles and transport them upward to the discharge port through a scraper to prevent blockage of subsequent sieve holes or increased wear efficiency of the sieve holes due to excessive particle size. The oscillation amplitude of the feed pipe is increased by controlling the amplitude adjustment rod, so that each quartz sand block collides with each other and the inner wall of the feed pipe and is initially crushed, thereby improving the screening efficiency and preventing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0024] Figure 1 It is an overall schematic diagram of the quartz sand classification and crushing device in the present invention;

[0025] Figure 2 This is an internal structure diagram of the quartz sand classification and crushing device in the present invention;

[0026] Figure 3 It is a schematic diagram of the lower hopper in the present invention;

[0027] Figure 4 A schematic diagram of adjusting the opening of the switch plate in the present invention;

[0028] Figure 5 It is a schematic diagram of the pressure column structure in the present invention;

[0029] Figure 6 It is a schematic diagram of the sieve aperture adjustment mechanism in the present invention;

[0030] Figure 7 It is a schematic diagram of the amplitude adjustment mechanism in the present invention;

[0031] Figure 8 It is a top view of the sieve plate in the present invention;

[0032] Among them, in the figure:

[0033] 100, base; 101, feed pipe; 102, screen cylinder; 1021, screen ring; 1023, screen plate; 1024, screen hole; 1025, swing arm; 1026, sleeve ring; 1027, pressure column; 1028, spiral groove; 1029, sliding column; 1032, first elastic member; 1031, first connecting rod; 1033, second connecting rod;

[0034] 200, window; 201, slider;

[0035] 300, discharge hopper; 3001, discharge port; 3002, switch plate; 3003, rotating seat; 3004, switch rod; 3005, sleeve; 3006, rotating drum; 3007, rotating shaft; 3008, round table; 3009, scraper; 301, turntable; 3012, second elastic member; 3013, eccentric ball; 3017, amplitude adjustment rod; 3018, arc sheet; 3019, amplitude slot; 302, eccentric rod. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Example 1

[0040] Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, provides a quartz sand grading and crushing device, including a screening mechanism, a sieve hole adjustment mechanism and an amplitude adjustment mechanism. The sieve hole 1024 is formed by the sieve plate 1023 and the sieve ring 1021, so that the size of the sieve hole 1024 is adjustable to prevent blockage and meet the grading and screening requirements of quartz sand of different sizes and specifications. The resistance value between each sieve plate 1023 is measured by a resistance sensor to determine the wear condition of the sieve plate 1023, and timely replacement and maintenance are performed.

[0041] Specifically, including:

[0042] The screening mechanism comprises a base 100, a feed pipe 101 obliquely arranged on the upper end surface of the base 100, and a screen drum 102 rotatably arranged in the feed pipe 101, wherein the screen drum 102 comprises screen rings 1021 arranged in an array along the inner wall of the feed pipe 101, and the aperture of the screen drum 102 changes with the flow rate of the quartz sand entering the feed pipe 101;

[0043] The sieve hole adjustment mechanism comprises a window 200 penetrating the outer wall of the sieve ring 1021 and a slide bar 201 slidingly penetrating the sieve ring 1021 . The slide bar 201 slides on the sieve ring 1021 along the window 200 .

[0044] The amplitude adjustment mechanism includes a lower hopper 300 movably arranged at the entrance of the conveying pipe 101, a turntable 301 arranged on the outer wall of the conveying pipe 101 and an eccentric rod 302 slidably arranged in the turntable 301. When the flow rate of quartz sand in the lower hopper 300 increases, the lower hopper 300 discharges materials at an increased speed and drives the eccentric rod 302 to slide outward, thereby increasing the vibration amplitude of the conveying pipe 101.

[0045] Among them, a buffer spring is provided between the base 100 and the feed pipe 101, and the turntable 301 is driven to rotate by a motor. When the eccentric rod 302 slides outward, the overall center of gravity of the turntable 301 deviates further from the center of the circle, so that when the motor rotates, the feed pipe 101 is driven to rotate via the turntable 301 to increase the amplitude.

[0046] Preferably, the outer wall of the sliding rod 201 located in the middle of each sieve ring 1021 is sleeved with a sieve plate 1023, and two adjacent sieve plates 1023 and two sieve rings 1021 form a sieve hole 1024. When the sieve plates 1023 are close to each other, the aperture of the sieve hole 1024 decreases.

[0047] More preferably, the window 200 is a circular groove, the slide bars 201 are distributed in an array around the circumference of the window 200 , and the slide bars 201 are vertically arranged to the sieve ring 1021 and remain vertical during the process of sliding along the window 200 .

[0048] Among them, a swing arm 1025 is rotatably sleeved on one end of the slide rod 201, and a ring 1026 is provided at the other end of the swing arm 1025. A pressure column 1027 is slidably provided on the inner wall of the ring 1026, a sliding column 1029 is vertically provided on the inner wall of the ring 1026, and a spiral groove 1028 is opened on the outer wall of the pressure column 1027.

[0049] More preferably, a first elastic member 1032 is further provided between the collar 1026 and the pressure column 1027 . The first elastic member 1032 pushes the pressure column 1027 to slide outward, and the collar 1026 and the first elastic member 1032 are rotationally connected.

[0050] Among them, the first elastic member 1032 is a spring, the ring 1026 is fixedly engaged with the swing arm 1025 so that it cannot move up and down but can only rotate, and the pressure column 1027 can only slide up and down, so that the first elastic member 1032 is rotationally connected with the ring 1026 to prevent the first elastic member 1032 from being driven to rotate by the ring 1026.

[0051] Among them, the ring 1026 is a circular ring, the sliding column 1029 is cylindrical and slidably arranged in the spiral groove 1028, and the pressure column 1027 can only move up and down but cannot rotate through a sliding flat key. Therefore, when the pressure column 1027 moves up and down, the ring 1026 is driven to rotate through the spiral groove 1028, and the pressure column 1027 connected to the ring 1026 is driven to rotate along the window 200.

[0052] Preferably, a first connecting rod 1031 and a second connecting rod 1033 are rotatably provided on the sieve plate 1023 at the same time, and the first connecting rod 1031 and the second connecting rod 1033 on two adjacent sieve plates 1023 are rotatably connected.

[0053] Furthermore, when the sieve plate 1023 rotates clockwise, the first connecting rod 1031 and the second connecting rod 1033 push each sieve plate 1023 to rotate synchronously clockwise through each rotationally connected first connecting rod 1031 and second connecting rod 1033, so that each sieve hole 1024 shrinks synchronously.

[0054] Preferably, when the sieve holes 1024 are reduced to the minimum, the sieve plates 1023 are assembled together. At this time, the two sides of the sieve plates 1023 are electrically connected through an ohmmeter. When pits or damage appear on the edges of the sieve plates 1023, the sieve holes 1024 formed by the assembly are also damaged. At this time, the contact area between the sieve plates 1023 is reduced, resulting in an increase in the resistance value, so that the damage of the sieve plates 1023 and the sieve holes 1024 can be monitored by the resistance value.

[0055] For example, in this embodiment, the resistance value of all the sieve plates 1023 after splicing is used for determination. In other embodiments, two groups can be used for measurement, and then the resistance values ​​of each group are further compared to confirm the location of the damaged sieve hole 1024, thereby realizing accurate positioning of the defective position.

[0056] In summary, when in use, the PLC vibration motor is used to drive the feed pipe 101 to oscillate on the base 100. As the amount of quartz sand entering the feed pipe 101 increases, the weight of the quartz sand falling on the pressure column 1027 increases, and the pressure column 1027 is pushed to slide downward, and the sliding column 1029 slides in the spiral groove 1028 to drive the ring 1026 to rotate counterclockwise. The ring 1026 drives the sliding rod 201 connected thereto to rotate through the swing arm 1025, so that each sieve plate 102 The sieve holes 1024 formed by the sieve plate 1023 and the sieve ring 1021 are uniformly spread out along the window 200, and the size of the sieve holes 1024 is increased, so that large-sized quartz sand particles can fall down conveniently, thereby preventing the sieve holes from being blocked when a large amount of quartz sand flows in. When the size of the sieve holes 1024 changes in real time with the flow of quartz sand, the enlarged and reduced sieve holes 1024 will also crush the quartz sand stuck in the sieve holes 1024, making it easier to fall down, reducing the efficiency drop caused by blockage, and at the same time achieving the cleaning of the sieve holes 1024.

[0057] At the same time, when the inner wall of the sieve hole 1024 is worn, the filtering and screening accuracy becomes worse. At this time, the quartz sand feeding is stopped, the pressure column 1027 rebounds upward, and the swing arm 1025 rotates clockwise, driving the sieve plates 1023 to be assembled together. At this time, the two sides of the sieve plate 1023 are electrically connected through the resistance sensor. When pits and damage appear on the edge of the sieve plate 1023, the sieve hole 1024 formed by the assembly is also damaged. At this time, the contact area between the sieve plates 1023 is reduced, which leads to an increase in the resistance value, so that the damage of the sieve plate 1023 and the sieve hole 1024 is monitored by the resistance value.

[0058] Example 2

[0059] Reference Figure 1 to Figure 8 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, and the difference is that when the number of solid particles is too large, the opening size of the discharge port 3001 and the size of the sieve hole 1024 are increased to prevent blockage. At the same time, the truncated table 3008 and the discharge hopper 300 cooperate with each other to grind and grind the sunken large particles, and transport them upward to the discharge port 3001 through the scraper 3009 to prevent the subsequent sieve holes 1024 from being blocked or the particle size is too large, resulting in an increased wear efficiency of the sieve holes 1024.

[0060] Specifically, the lower end of the lower hopper 300 is connected to the pressure column 1027 , and a lower opening 3001 is formed through the inner wall of the lower hopper 300 . A switch plate 3002 is rotatably provided in the lower opening 3001 , and the switch plate 3002 is used to control the opening degree of the lower opening 3001 .

[0061] Among them, the discharge port 3001 is in a conical shape, and is larger at the top and smaller at the bottom. There are 4 discharge ports 3001 in a circular array. The discharge port 3001 is also in a conical shape. The switch plate 3002 is embedded in the discharge port 3001. The greater the amplitude of the switch plate 3002 rotating away from the discharge port 3001, the greater the flow speed of the quartz sand from the discharge port 3001, and the faster the discharge speed.

[0062] Preferably, a rotating seat 3003 is provided on the outer wall of the switch plate 3002, a switch rod 3004 is rotatably provided inside the rotating seat 3003, a sleeve 3005 is rotatably provided on the end surface of the conveying pipe 101, and the end of the switch rod 3004 away from the switch plate 3002 is rotatably connected to the sleeve 3005.

[0063] The sleeve 3005 and the feed pipe 101 are fixedly connected so that there is no relative movement between the two, and the sleeve 3005 and the lower hopper 300 can slide relative to each other.

[0064] Preferably, when the lower hopper 300 slides downward relative to the sleeve 3005, the sleeve 3005 drives the switch plate 3002 to rotate outward through the switch rod 3004, so that the opening of the lower opening 3001 on the lower hopper 300 increases, and the quartz sand falls more quickly. Between the repeated opening and closing of the switch plate 3002, it is squeezed and pre-crushed between the lower opening 3001 to prevent the screen from being blocked and affecting the grading and screening efficiency.

[0065] More preferably, a rotating cylinder 3006 is provided at one end of the sleeve ring 1026 away from the first elastic member 1032 , a rotating shaft 3007 is provided inside the rotating cylinder 3006 , and the rotating shaft 3007 passes through the pressure column 1027 .

[0066] Furthermore, a truncated platform 3008 is provided at one end of the rotating shaft 3007 extending into the lower hopper 300, and scrapers 3009 are arranged in an array on the outer wall of the truncated platform 3008, and the scrapers 3009 are in a spiral shape.

[0067] The rotating shaft 3007 is coaxially arranged with the rotating drum 3006 , and the rotating shaft 3007 can rotate along the axis of the pressure column 1027 or slide along the axis direction, and the scraper 3009 is a spiral paddle made of hard rubber.

[0068] Preferably, large volume of quartz sand cannot pass through the discharge port 3001 and fall to the lowest point of the lower hopper 300 and fit with the round table 3008. The scraper 3009 also fits with the inner wall of the lower hopper 300 in the initial state. When the round table 3008 rotates, it drives the scraper 3009 to rotate, and the large volume of quartz sand is further crushed by the rotation and extrusion between the round table 3008 and the lower hopper 300, which facilitates subsequent grading and screening and prevents blockage.

[0069] Among them, after the crushing and grading are completed, the crushed quartz sand is transmitted upward to the discharge port 3001 by the rubber spiral paddle for discharge. After the crushing is completed, under the push of the first elastic member 1032, the pressure column 1027 automatically resets, and the scraper 3009 is completely attached to the inner wall of the discharge hopper 300 and fully scraped.

[0070] Furthermore, in this embodiment, a quartz sand grading and crushing device is used to crush and grade quartz sand. Similarly, the present invention can also crush and grade solid particles such as coal blocks, slag, and glass blocks.

[0071] In summary, when in use, solid particles such as quartz sand enter the lower hopper 300 from the feed pipe 101 and undergo primary screening. Particles smaller than the feed port 3001 fall through and undergo subsequent screening. Solids larger than the feed port 3001 will be deposited at the bottom of the lower hopper 300 and the increased weight will push the lower hopper 300 and the pressure column 1027 downward. At this time, the lower hopper 300 moves downward relative to the sleeve 3005, so that the switch rod 3004 drives the switch plate 3002 to rotate upward, and the opening of the feed port 3001 increases to prevent blockage.

[0072] At the same time, the pressure column 1027 moves downward to drive the ring 1026 and the rotating drum 3006 to rotate, and at the same time drives the rotating shaft 3007 to rotate, and further crushes the large volume of quartz sand through the rotation and extrusion between the round table 3008 and the lower hopper 300, which is convenient for subsequent grading and screening to prevent blockage. After the crushing and grading are completed, the crushed quartz sand is transmitted upward to the discharge port 3001 through the rubber spiral paddle. After the discharge and crushing are completed, the pressure column 1027 is automatically reset under the push of the first elastic member 1032, and the scraper 3009 is completely attached to the inner wall of the lower hopper 300 and is fully scraped.

[0073] Example 3

[0074] Reference Figure 1-Figure 8 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but is different in that when the flow rate of quartz sand entering increases, the amplitude of the conveying pipe 101 is controlled to increase by the amplitude adjustment rod 3017, so that each quartz sand block collides with each other and the inner wall of the conveying pipe 101 and is initially broken, thereby improving the screening efficiency and preventing blockage.

[0075] Specifically, an amplitude adjustment rod 3017 is provided on the outer wall of the lower hopper 300 , and the amplitude adjustment rod 3017 is slidably arranged on the outer wall of the conveying pipe 101 . An arc-shaped piece 3018 is provided on one end of the amplitude adjustment rod 3017 away from the lower hopper 300 .

[0076] Furthermore, the rotating disk 301 is radially provided with an amplitude groove 3019 , an eccentric rod 302 is slidably provided in the amplitude groove 3019 , and an eccentric ball 3013 is provided at one end of the eccentric rod 302 that slides out of the amplitude groove 3019 .

[0077] Preferably, a second elastic member 3012 is provided between the eccentric rod 302 and the inner wall of the amplitude groove 3019 , and the second elastic member 3012 pulls the eccentric rod 302 to slide toward the center of the rotating disk 301 .

[0078] The amplitude adjustment rod 3017 follows the lower hopper 300 to slide relative to the conveying pipe 101, and drives the arc piece 3018 to slide along the axis direction of the conveying pipe 101. In this embodiment, the arc piece 3018 is made of magnet material, and the eccentric ball 3013 is made of metal.

[0079] Furthermore, the second elastic member 3012 is a spring, and always pulls the eccentric rod 302 and the eccentric ball 3013 toward the center of the circle. The closer the arc piece 3018 is to the eccentric ball 3013, the stronger the attraction to it is, and the longer the eccentric rod 302 slides outward, so that the center of gravity deviates further from the center of the turntable 301. When the turntable 301 rotates, the vibration amplitude of the feed pipe 101 on the base 100 is greater, and the screening efficiency is higher.

[0080] The greater the vibration amplitude of the conveying pipe 101 is, the more helpful it is for crushing and screening the large pieces of quartz sand in the conveying pipe 101 and the lower hopper 300. After the large pieces of solid matter are crushed and screened, the lower hopper 300 is reset and the amplitude returns to the initial state.

[0081] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0082] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0083] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A quartz sand classification and crushing device, characterized in that: A screening mechanism comprises a base (100), a material delivery pipe (101) obliquely arranged on the upper end surface of the base (100), and a screen drum (102) rotatably arranged in the material delivery pipe (101), the screen drum (102) comprising screen rings (1021) arranged in an array along the inner wall of the material delivery pipe (101), and the aperture of the screen drum (102) changes with the flow rate of quartz sand entering the material delivery pipe (101); A sieve hole adjustment mechanism, comprising a window (200) penetrating an outer wall of the sieve ring (1021) and a slide bar (201) slidably penetrating the sieve ring (1021), wherein the slide bar (201) slides on the sieve ring (1021) along the window (200); An amplitude adjustment mechanism comprises a lower hopper (300) movably arranged at the entrance of the conveying pipe (101), a rotating disk (301) arranged on the outer wall of the conveying pipe (101), and an eccentric rod (302) slidably arranged in the rotating disk (301); when the flow rate of quartz sand in the lower hopper (300) increases, the lower hopper (300) discharges materials at an increased speed and drives the eccentric rod (302) to slide outward, thereby increasing the vibration amplitude of the conveying pipe (101); The outer wall of the sliding rod (201) located in the middle of each sieve ring (1021) is sleeved with a sieve plate (1023), and two adjacent sieve plates (1023) and two sieve rings (1021) form a sieve hole (1024), and the aperture of the sieve hole (1024) decreases when the sieve plates (1023) are close to each other; A swing arm (1025) is rotatably sleeved on one end of the slide rod (201), a collar (1026) is provided on the other end of the swing arm (1025), a pressure column (1027) is slidably provided on the inner wall of the collar (1026), a sliding column (1029) is provided on the inner wall of the collar (1026), and a spiral groove (1028) is provided on the outer wall of the pressure column (1027); A first elastic member (1032) is further provided between the collar (1026) and the pressure column (1027), the first elastic member (1032) pushing the pressure column (1027) to slide outwards, and the collar (1026) and the first elastic member (1032) are rotatably connected; A first connecting rod (1031) and a second connecting rod (1033) are rotatably provided on the sieve plate (1023) at the same time, and the first connecting rod (1031) and the second connecting rod (1033) on two adjacent sieve plates (1023) are rotatably connected.

2. The quartz sand classification and crushing device according to claim 1, characterized in that: The lower end of the lower hopper (300) is connected to the pressure column (1027), and a lower hopper (300) is provided with a lower hopper opening (3001) through the inner wall of the lower hopper (300), and a switch plate (3002) is rotatably provided in the lower hopper opening (3001), and the switch plate (3002) is used to control the opening degree of the lower hopper opening (3001).

3. The quartz sand classification and crushing device according to claim 2, characterized in that: The outer wall of the switch plate (3002) is provided with a rotating seat (3003), a switch rod (3004) is rotatably provided inside the rotating seat (3003), a sleeve (3005) is rotatably provided on the end surface of the conveying pipe (101), and one end of the switch rod (3004) away from the switch plate (3002) is rotatably connected to the sleeve (3005).

4. The quartz sand classification and crushing device according to claim 3, characterized in that: A rotating cylinder (3006) is provided at one end of the sleeve ring (1026) away from the first elastic member (1032), a rotating shaft (3007) is provided inside the rotating cylinder (3006), and the rotating shaft (3007) passes through the pressure column (1027); One end of the rotating shaft (3007) extending into the lower hopper (300) is provided with a truncated cone (3008), and an array of scrapers (3009) are provided on the outer wall of the truncated cone (3008), and the scrapers (3009) are in the shape of a spiral line.

5. The quartz sand classification and crushing device according to claim 4, characterized in that: An amplitude adjustment rod (3017) is provided on the outer wall of the lower hopper (300), and the amplitude adjustment rod (3017) is slidably arranged on the outer wall of the conveying pipe (101), and an arc-shaped piece (3018) is provided on one end of the amplitude adjustment rod (3017) away from the lower hopper (300); The rotating disk (301) is radially provided with an amplitude groove (3019), the eccentric rod (302) is slidably arranged in the amplitude groove (3019), and an eccentric ball (3013) is arranged at one end of the eccentric rod (302) that slides out of the amplitude groove (3019).

6. The quartz sand classification and crushing device according to claim 5, characterized in that: A second elastic member (3012) is provided between the eccentric rod (302) and the inner wall of the amplitude groove (3019), and the second elastic member (3012) pulls the eccentric rod (302) to slide towards the center of the rotating disk (301).

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