A laboratory sand and gravel aggregate processing and crushing device

Abstract

The application is a sand and gravel aggregate processing and crushing device for laboratory, which comprises a crushing box with a feeding port at the top, a discharging port at the bottom and a crushing assembly inside for crushing sand and gravel aggregate; a screening box connected to the discharging port and provided with a discharging port on the side wall; a screen mesh obliquely arranged inside the screening box to divide the screening box into upper and lower halves; the discharging port is arranged on the side wall of the lower side of the upper half of the screening box; a lifting cylinder provided with a feeding plate at the bottom for receiving the sand and gravel aggregate discharged from the discharging port, a feeding port at the top and a lifting assembly inside for lifting the sand and gravel aggregate from the bottom to the top of the lifting cylinder. The application sets a screen mesh in the screening box to screen the initially crushed sand and gravel aggregate, lift the oversized waste to the feeding port by the lifting assembly for secondary crushing in the crushing box to ensure the crushing yield.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of crushing devices, in particular to a laboratory sand and gravel aggregate processing and crushing device. BACKGROUND

[0002] Sand and gravel aggregate is a collective term for sand, gravel, crushed stone, block stone, and other materials in water conservancy projects. Sand and gravel aggregate is the main building material for concrete and masonry structures in water conservancy projects. Aggregate with a particle size greater than 5mm is called coarse aggregate, and aggregate with a particle size less than 5mm is called fine aggregate, also known as sand. Sand and gravel aggregate is the main building material for concrete and masonry structures in water conservancy projects.

[0003] Under normal circumstances, sand and gravel aggregate is mined, transported, and crushed at a material yard near the water conservancy structure, and then transported to the concrete mixing station for concrete mixing. Therefore, the material at the material yard needs to be tested before the above processes are performed. The testing content includes but is not limited to water content, silt content, and organic matter content. The above testing process requires crushing the material mined at the material yard. Under normal circumstances, the amount of material required for the above testing in the laboratory is not large, so it is not suitable for using an entire crushing production line.

[0004] In the prior art, mechanical crushing is generally performed by a jaw crusher. During the crushing process, there are a large number of oversized waste materials due to incomplete crushing, which need to be put into the crusher for secondary crushing. On the one hand, this affects the crushing yield, and on the other hand, this process is usually completed by manual labor, which is labor-intensive.

[0005] Therefore, a laboratory sand and gravel aggregate processing and crushing device is proposed to solve the above technical problems. SUMMARY

[0006] The technical problem solved by the present application is that in the prior art, the crushing process of a small amount of aggregate material for a laboratory is performed by a jaw crusher, which leads to incomplete crushing and affects the crushing yield. In addition, the process of secondary crushing of waste materials brings a large amount of work, which is labor-intensive for the operator.

[0007] To solve the above technical problems, the technical solution adopted by the present application is as follows:

[0008] A laboratory sand and gravel aggregate processing and crushing device, comprising:

[0009] a crushing box having a feed inlet at the top and a discharge outlet at the bottom, and a crushing assembly inside for crushing sand and gravel aggregate;

[0010] a screening box connected to the discharge outlet and having a discharge port in the side wall;

[0011] The screen is obliquely arranged in the screening box to divide the screening box into an upper half and a lower half. The discharge port is arranged on the side wall of the lower side of the upper half of the screening box.

[0012] The lifting cylinder is provided with a feeding plate at the bottom for receiving the sand and gravel aggregates discharged from the discharge port, a feeding port at the top, and a lifting assembly inside for lifting the sand and gravel aggregates from the bottom to the top of the lifting cylinder.

[0013] In particular, the lifting assembly includes an auger arranged inside the shell and driven to rotate by a vertical motor. The feeding plate is obliquely arranged at the bottom of the auger and connected to the discharge port. The shell is provided with a material pipe at the top, the end of which is located above the feeding port.

[0014] In particular, the lifting assembly includes a shaft arranged at the central axis of the vertical shell. It also includes a spiral feeding plate arranged around the shaft. The bottom end of the discharge port is further provided with an outwardly extending discharge plate. One end of the feeding plate is connected to the bottom end of the spiral feeding plate, and the other end extends below the discharge plate. The top end of the spiral feeding plate is provided with a horizontal section extending above the feeding port.

[0015] It also includes a first vibration motor arranged on one side of the outer wall of the shell. The first vibration motor is obliquely arranged. It also includes a second vibration motor arranged on the outer wall of the shell opposite the first vibration motor. The vibration direction of the second vibration motor is perpendicular to that of the first vibration motor.

[0016] The bottom of the shell is further provided with a first vibration spring, and the lower end of the first vibration spring is connected to a cross connecting plate. The cross connecting plate is fixedly connected to the outer wall of the screening box. The shell is connected to the outer wall of the screening box through the connecting spring.

[0017] In particular, the crushing assembly includes a first crushing roller and a second crushing roller arranged in the crushing box. The crushing teeth of the first crushing roller and the second crushing roller are engaged with each other. The first crushing roller is driven to rotate towards the second crushing roller by a first crushing motor outside the crushing box. The second crushing roller is a fixed roller.

[0018] In particular, the crushing assembly includes a first crushing roller and a second crushing roller arranged in the crushing box. The first crushing roller and the second crushing roller rotate towards each other, and the crushing teeth are engaged with each other. The first crushing roller is driven to rotate by a first crushing motor outside the crushing box, and the second crushing roller is driven to rotate by a second crushing motor outside the crushing box.

[0019] In particular, the inner wall of the lower half of the screening box is funnel-shaped and converges inward.

[0020] In particular, one end of the screen near the discharge port is hinged to the inner wall of the screening box, and the lower surface of the other end away from the discharge port is provided with a second vibration spring. The inner wall of the screening box is also provided with a horizontal placement table, and the lower end of the second vibration spring is connected to the horizontal placement table.

[0021] Particularly, the screen is hinged to the inner wall of the screening box near one end of the discharge port, and a second vibration spring is arranged on the lower surface of the end away from the discharge port, and the inner wall of the screening box is further provided with a horizontal placement table, and the lower end of the second vibration spring is connected to the horizontal placement table.

[0022] A third vibration motor perpendicular to the screen is further arranged on the screen.

[0023] Particularly, two mounting bases are arranged on the top of the screening box beside the crushing box, a horizontal mounting hole is formed in each of the two mounting bases, a horizontal rotating rod is rotatably connected in the horizontal mounting holes on the two sides, and a first driven gear is sleeved on one end of the horizontal rotating rod.

[0024] A horizontal driving rod perpendicular to the horizontal rotating rod is further included, the horizontal driving rod penetrates the mounting table on the top of the crushing box, and is driven to rotate by a driving motor arranged at the end of the mounting table; the horizontal driving rod is further provided with a first incomplete gear meshing with the first driven gear.

[0025] A connecting rod perpendicular to the horizontal rotating rod and arranged on the horizontal rotating rod is further included, an open-upwards hopper is connected to the end of the connecting rod, a first tension spring is connected between the bottom of the hopper and the outer wall of the crushing box, and the lifting assembly lifts the sand and gravel aggregate discharged from the discharge port to the opening of the hopper.

[0026] Further, a top cover is further included, which is arranged on the feeding port, a first hinge support is arranged on the outer side wall of the feeding port, a second hinge support is arranged on the lower surface of one end of the top cover and matched with the first hinge support, a pin shaft penetrating the first hinge support and fixedly connected with the first hinge support is further included, and the top cover is reversibly arranged on the feeding port through the pin shaft, the first hinge support and the second hinge support.

[0027] A second driven gear arranged on the end of the pin shaft close to the horizontal driving rod is further included, and a second incomplete gear meshing with the second driven gear is arranged on the horizontal driving rod.

[0028] A second tension spring is further connected between the top cover and the inner side wall of the crushing box.

[0029] The cover plate and the hopper are reversibly synchronous.

[0030] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0031] The present application sets a screen in the screening box, screens the sand and gravel aggregate after primary crushing, lifts the waste with a particle size larger than the standard to the feeding port by the lifting assembly, and performs secondary crushing by the crushing box, so that the yield of the crushed product is ensured.

[0032] The application realizes automatic lifting and feeding of waste materials by setting the inclined screen mesh and cooperating with the lifting assembly, and effectively reduces the labor intensity of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the application.

[0034] Figure 2 It is a structural schematic diagram of another embodiment of the application.

[0035] Figure 3 It is a structural schematic diagram of the application.

[0036] Figure 4 It is a structural schematic diagram of another embodiment of the application.

[0037] Figure 5 It is Figure 1 It is an enlarged structural schematic diagram of A in the middle.

[0038] The interpretation of each number in the figure is as follows: crushing box - 1; feed inlet - 101; discharge outlet - 102; mounting base - 103; horizontal rotating lever - 104; first driven gear - 105; horizontal drive lever - 106; mounting table - 107; drive motor - 108; first incomplete gear - 109; connecting rod - 110; hopper - 111; first tension spring - 112; top cover - 113; first hinged support - 114; second hinged support - 115; second driven gear - 116; second incomplete gear - 117; second tension spring - 118; screening box - 2; discharge outlet - 201; screen mesh - 3; second vibration spring - 301; horizontal placement table - 302; third vibration motor - 304; shell - 4; auger - 401; vertical motor - 402; feed plate - 403; shaft lever - 404; spiral feed plate - 405; discharge plate - 406; first vibration motor - 407; second vibration motor - 408; first vibration spring - 409; cross connecting plate - 410; first crushing roller - 501; second crushing roller - 502. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application, so as to have a further understanding of the concept of the application, the solved technical problems, the technical features constituting the technical solutions and the brought technical effects.

[0040] As Figure 1 shown, a laboratory sand and gravel aggregate processing and crushing device comprises:

[0041] The crushing box 1 is provided with a feed inlet 101 at the top and a discharge outlet 102 at the bottom, and is internally provided with a crushing assembly for crushing sand and gravel aggregates.

[0042] The screening box 2 is connected to the discharge port 102, and the side wall is provided with a discharge port 201;

[0043] The screen 3 is obliquely arranged in the screening box 2, and divides the screening box 2 into an upper half and a lower half; the discharge port 201 is arranged on the low side of the upper half of the screening box 2.

[0044] The lifting cylinder is provided with a feeding plate 403 at the bottom for receiving the sand and gravel aggregate discharged from the discharge port 201, and a feeding port 101 at the top, and is internally provided with a lifting assembly for lifting the sand and gravel aggregate from the bottom to the top of the lifting cylinder.

[0045] In the present application, the main principle is that the sand and gravel aggregate is added to the feeding port 101 of the crushing box 1 through an external feeding device such as a feeding belt or a feeding vehicle, and after being preliminarily crushed in the crushing box 1, the sand and gravel aggregate enters the screening box 2 below, and is preliminarily screened by the screen 3. The sand and gravel aggregate that does not pass through the screen 3 rolls under the influence of the slope of the screen 3 towards the discharge port 201 at the low end of the screen 3, and is discharged from the screening box 2 through the discharge port 201, and is lifted by the lifting assembly and then enters the feeding port 301 again, so as to be crushed again in the screening box 2, thereby ensuring that the crushing yield and the collection and distribution of the sand and gravel aggregate meet the requirements. It should be noted that the guiding here refers to the top end of the lifting cylinder being located above the feeding port 101, so that the sand and gravel aggregate falls into the screening box 2.

[0046] As a preferred embodiment, the lifting assembly includes an auger 401 arranged in the housing 4, and the auger 401 is driven to rotate by a vertical motor 402; the feeding plate 403 is obliquely arranged at the bottom of the auger 401 and is connected to the discharge port 201; and the housing 4 is provided with a pipe at the top end thereof above the feeding port 101.

[0047] In this embodiment, a detailed structure of the lifting assembly is provided, specifically as shown in Figure 2 The housing 4 is arranged in the housing 4. When the sand and gravel aggregate with large particle size that does not pass through the screen 3 is discharged from the screen 3 in the screening box 2 through the discharge port 201, it can enter the inside of the housing 4 through the feeding plate 403, and be lifted to the top discharge port under the action of the auger 401, thereby completing the material lifting process, and then the large particle size sand and gravel aggregate after lifting is discharged into the feeding port 101 through the pipe at the top end of the housing 4.

[0048] In a preferred embodiment, the lifting assembly includes a shaft 404 disposed at the central axis of the vertical housing 4; it also includes a spiral conveyor plate 405 disposed around the shaft 404; the bottom end of the discharge port 201 is further provided with an outwardly extending discharge plate 406; one end of the feed plate 403 is connected to the bottom end of the spiral conveyor plate 405, and the other end extends to below the discharge plate 406; the top end of the spiral conveyor plate 405 is provided with a horizontal section extending above the feed port 101;

[0049] It also includes a first vibration motor 407 disposed on one side of the outer wall of the housing 4, the first vibration motor 407 being inclined; it also includes a second vibration motor 408 disposed on the outer wall of the housing 4 opposite to the first vibration motor 407, the vibration direction of the second vibration motor being perpendicular to that of the first vibration motor 407.

[0050] The bottom of the outer shell 4 is also provided with a first vibration spring 409. The first vibration spring 409 is connected to a horizontal connecting plate 410 below it. The horizontal connecting plate 410 is fixedly connected to the outer wall of the screening box 2. The outer shell 4 is connected to the outer wall of the screening box 2 through a connecting spring.

[0051] This embodiment provides another structure for the lifting component, wherein, as shown in the example... Figure 3 As shown, a shaft 404 is provided at the axis of the outer casing 4. The spiral conveyor plate 405, as the main component for lifting materials, vibrates under the drive of the first vibrating motor 407 and the second vibrating motor 408, thereby completing the process of sand and gravel aggregate moving upward along the spiral conveyor plate. Specifically, based on the self-synchronization principle of the dual vibrating motors, the first vibrating motor 407 and the second vibrating motor 408 generate excitation force, forcing the entire conveying tower to undergo spatial composite vibration of horizontal circular motion and upward vertical motion. The material inside the spiral conveyor plate is affected by the excitation force and makes uniform circular throwing motion, moving upward along the conveying trough to complete the upward conveying of materials.

[0052] In a preferred embodiment, the crushing box 1 is provided with a first crushing roller 501 and a second crushing roller 502, and the crushing teeth of the first crushing roller 501 and the second crushing roller 502 mesh with each other; the first crushing roller 501 is driven by a first crushing motor outside the crushing box 1 to rotate toward the second crushing roller 502, and the second crushing roller 502 is a fixed roller.

[0053] In this embodiment, an internal structure of a crushing box 1 is provided, wherein a first crushing roller 501 and a second crushing roller 502 with meshing crushing teeth serve as the main crushing components, and crushing of sand and gravel aggregates is performed by crushing teeth that rotate in opposite directions.

[0054] As a preferred embodiment, the crushing box 1 is provided with a first crushing roller 501 and a second crushing roller 502 rotating towards each other; the crushing teeth of the first crushing roller 501 and the second crushing roller 502 are engaged with each other; the first crushing roller 501 is driven to rotate by a first crushing motor outside the crushing box 1, and the second crushing roller is driven to rotate by a second crushing motor outside the crushing box 1.

[0055] In the embodiment, another internal structure of the crushing box 1 is provided, in which the relative rotation speed between the first crushing roller 501 and the second crushing roller 502 is increased by rotating them towards each other, thereby effectively enhancing the crushing effect.

[0056] As a preferred embodiment, the inner wall of the screening box 2 below the screen 3 is folded towards the axis.

[0057] In the embodiment, the inner wall of the screening box 2 is folded to achieve the purpose of converging the sand and aggregate products.

[0058] As a preferred embodiment, the screen 3 is hinged to the inner wall of the screening box 2 at one end close to the discharge port 201, and a second vibration spring 301 is arranged on the lower surface of the end away from the discharge port 201; the inner wall of the screening box 2 is further provided with a horizontal placement table 302, and the lower end of the second vibration spring 301 is connected to the horizontal placement table 302.

[0059] In the embodiment, a detailed structure of the screen 3 is provided, in which the higher end of the screen 3 is connected to the horizontal placement table 302 of the inner wall of the screening box 2 through the second vibration spring 301, and the lower end is connected to the inner wall of the screening box 2 close to the discharge port by hinging; the sand and aggregate entering the screening box 2 through the upper feeding port 201 are screened, and when the large-diameter sand and aggregate hits the screen, the vibration of the screen 3 is driven, thereby throwing the sand and aggregate stacked on the screen 3 towards the side of the discharge port 201, which helps to complete the discharge process of the large-diameter sand and aggregate.

[0060] As a preferred embodiment, the screen 3 is hinged to the inner wall of the screening box 2 at one end close to the discharge port 201, and a second vibration spring 301 is arranged on the lower surface of the end away from the discharge port 201; the inner wall of the screening box 2 is further provided with a horizontal placement table 302, and the lower end of the second vibration spring 301 is connected to the horizontal placement table 302.

[0061] A third vibration motor 304 perpendicular to the screen 3 is further arranged on the screen 3.

[0062] In this embodiment, by additionally setting a third vibration motor 304 perpendicular to the screen 3 plane on the basis of the foregoing embodiment, a driving force source is provided for the screen 3 to facilitate better discharge of large-diameter aggregate. In addition, the third vibration motor 304 can also help spread the accumulated sand and gravel aggregate on the screen 3 to speed up the screening speed of the sand and gravel aggregate.

[0063] As a preferred embodiment, two mounting bases 103 are arranged on the top of the screening box 2 beside the crushing box 1, each of the two mounting bases 103 is provided with a horizontal mounting hole, a horizontal rotating rod 104 is rotatably connected in the horizontal mounting hole on each side, and a first driven gear 105 is sleeved on one end of the horizontal rotating rod 104;

[0064] A horizontal drive rod 106 perpendicular to the horizontal rotating rod 104 is further included, the horizontal drive rod 106 is driven to rotate by a drive motor 108 arranged at the end of a mounting table 107 after penetrating through the mounting table 107 on the top of the crushing box 1; the horizontal drive rod 106 is further provided with a first incomplete gear 109 engaged with the first driven gear 105;

[0065] A connecting rod 110 perpendicular to the horizontal rotating rod 104 and arranged on the horizontal rotating rod 104 is further included, an open upward hopper 111 is connected at the end of the connecting rod 110, a first tension spring 112 is connected between the bottom of the hopper 111 and the outer wall of the crushing box 1, and the lifting assembly lifts the sand and gravel aggregate discharged from the discharge port 201 to the opening of the hopper 111.

[0066] The embodiment provides a detailed structure of the hopper 111 for temporarily storing the large-diameter aggregate lifted by the lifting assembly and dumping the aggregate into the screening box as a whole after a certain amount is stored, specifically, the hopper 111 is connected to the horizontal rotating rod 104 through the connecting rod 110, as shown in Figure 4As shown, when the output shaft of the driving motor 108 rotates, the horizontal driving rod 106 rotates, and the first incomplete gear 109 rotates around the horizontal driving rod 106, and the first driven gear 105 on the horizontal rotating rod 104 intermittently engages. When the teeth of the first incomplete gear 109 engage with the teeth of the first driven gear 105, the horizontal driving rod 106 rotates through the first driven gear 105 and the first incomplete gear 109, and the connecting rod 110 rotates, so that the hopper 111 at the end of the connecting rod 110 rotates around the horizontal rotating rod 104, and the sand and gravel aggregate stored in the hopper 111 is poured into the crushing box 1 for crushing. After the hopper 111 is turned over, the teeth of the first incomplete gear 109 disengage from the teeth of the first driven gear 105, and the hopper 111 is turned back to the vertical state under the action of the first extension spring 112, and the lifting and receiving and storing are performed again. In this process, the driving motor speed can be adjusted according to the actual crushing condition to control the frequency of pouring sand and gravel aggregate by the hopper 111. In addition, the rotating connection of the foregoing can be provided by setting a rotating bearing to provide a mounting position of the horizontal rotating rod 104, or by setting a rotating seat to cooperate with a rotating sleeve to set the horizontal rotating rod 104, so as to complete the rotating connection process of the horizontal rotating rod 104.

[0067] As a further embodiment, a top cover 113 is further provided on the feeding port 101, a first hinge support 114 is provided on the outer wall of the feeding port 101, a second hinge support 115 is provided on one end of the lower surface of the top cover 113 and cooperates with the first hinge support 114, and a pin shaft is further provided through the first hinge support 114 and fixedly connected with the first hinge support 114; the top cover 113 is rotatably provided on the feeding port 101 through the pin shaft, the first hinge support 114 and the second hinge support 115;

[0068] A second driven gear 116 is further provided on the pin shaft close to one end of the horizontal driving rod 106, and a second incomplete gear 117 is provided on the horizontal driving rod 106 and engages with the second driven gear 116;

[0069] A second extension spring 118 is further connected between the top cover 113 and the mounting table 107;

[0070] The cover plate is synchronous with the turning of the hopper 111.

[0071] In this embodiment, a large amount of dust is generated in the crushing process of the sand and gravel aggregate raw material and in the pouring process of the large-diameter sand and gravel aggregate, so a top cover 113 structure cooperating with the hopper 111 is provided to suppress the dust in the crushing process. Specifically, as shown in Figure 4 and Figure 5As shown, the top cover 113 is connected to the outer wall of the feeding port 101 through the cooperation of the first hinge support 114, the second hinge support 115 and the pin shaft. The horizontal driving rod 106 is also provided with a second incomplete gear 117. When the horizontal driving rod 106 rotates to drive the first driven gear 105 to rotate, the second incomplete gear 117 is also driven to rotate together with the first incomplete gear 115, and the second driven gear 116 on the pin shaft is driven to rotate through the second incomplete gear 117, so as to drive the pin shaft to rotate, so that the top cover 113 is synchronized with the turning of the hopper 111. The turning synchronization refers to that when the hopper 111 is turned to dump the materials, the top cover 113 is in an open state under the rotation of the pin shaft, at this time, the materials are normally dumped into the feeding port 101; when the dumping process is completed, the hopper 111 returns to the vertical state, at this time, the top cover 113 returns to the state of covering the feeding port 101. Specifically, when the first incomplete gear 109 and the first driven gear 105 are in the meshing state, that is, the hopper 111 is in the turning process, the teeth of the second incomplete gear 117 and the teeth of the second driven gear 116 are also in the meshing state, at this time, the top cover 113 is away from the feeding port 101 under the rotation of the pin shaft, and the second tensile spring 118 is stretched to accumulate elastic potential energy, and the feeding port 101 is in an open state to complete the dumping process of the hopper 111. When the first incomplete gear 109 and the first driven gear 105 are disengaged, the hopper 111 returns to the state of opening upward under the action of the first tensile spring, at this time, the second incomplete gear 117 and the second driven gear 116 are also disengaged, the rotation force of the pin shaft applied to the top cover 113 disappears, at this time, the second tensile spring 118 releases the elastic potential energy to rotate the top cover 113 to cover the feeding port 101, thereby effectively avoiding the dust generated in the crushing and dumping process.

[0072] In the description of the present application, the "connection", "fixation" can be fixed connection, machining, welding, and can also be mechanical connection, and the specific case is understood as the specific meaning of the above terms in the present application.

[0073] In the description of the present application, the terms "center", "upper", "lower", "horizontal", "inner", "outer" and the like only indicate the position relationship for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, so it cannot be understood as a limitation on the present application.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A laboratory-grade sand and gravel aggregate processing and crushing device, characterized in that, include: The crushing box (1) has a feed inlet (101) at the top and a discharge outlet (102) at the bottom, and is equipped with crushing components for crushing sand and gravel aggregates inside; The screening box (2) is connected to the discharge port (102) and has a discharge port (201) on its side wall. The screen (3) is inclined inside the screening box (2) to divide the screening box (2) into an upper half and a lower half; the discharge port (201) is located on the lower side wall of the upper half of the screening box (2); The lifting cylinder has a feed plate (403) at the bottom for receiving the sand and gravel aggregate discharged from the discharge port (201), a guide feed port (101) at the top, and a lifting component inside for lifting the sand and gravel aggregate from the bottom to the top of the lifting cylinder; It also includes two mounting bases (103) set on the top of the screening box (2) and located next to the crushing box (1). Each of the two mounting bases (103) has a horizontal mounting hole, and a horizontal rotating rod (104) is rotatably connected in the horizontal mounting holes on both sides. A first driven gear (105) is sleeved on one end of the horizontal rotating rod (104). It also includes a horizontal drive rod (106) perpendicular to the horizontal rotating rod (104), the horizontal drive rod (106) passing through the mounting platform (107) at the top of the crushing box (1) and being driven to rotate by a drive motor (108) located at the end of the mounting platform (107); the horizontal drive rod (106) is also provided with a first incomplete gear (109) meshing with the first driven gear (105). It also includes a connecting rod (110) disposed on the horizontal rotating rod (104) and perpendicular to the horizontal rotating rod (104), the end of the connecting rod (110) is connected to a hopper (111) with an upward opening, a first tension spring (112) is connected between the bottom of the hopper (111) and the outer wall of the crushing box (1), and the lifting assembly lifts the sand and gravel aggregate discharged from the discharge port (201) to the opening of the hopper (111); It also includes a top cover (113) covering the feed inlet (101), a first hinge support (114) on the outer wall of the feed inlet (101), a second hinge support (115) cooperating with the first hinge support (114) on the lower surface of one end of the top cover (113), and a pin that passes through the first hinge support (114) and is fixedly connected to the first hinge support (114); the top cover (113) is rotatably mounted on the feed inlet (101) through the pin, the first hinge support (114) and the second hinge support (115); It also includes a second driven gear (116) disposed at one end of the pin shaft near the horizontal drive rod (106), and a second incomplete gear (117) that meshes with the second driven gear (116) is provided on the horizontal drive rod (106). A second tension spring (118) is also connected between the top cover (113) and the inner side wall of the crushing box (1). The top cover (113) and the hopper (111) rotate synchronously.

2. The laboratory sand and gravel aggregate processing and crushing device as described in claim 1, characterized in that, The lifting assembly includes an auger (401) disposed inside the housing (4), the auger (401) being driven to rotate by a vertical motor (402); a feed plate (403) is inclinedly disposed at the bottom of the auger (401) and connected to the discharge port (201); the top of the housing (4) is provided with a material pipe whose end is located above the feed port (101).

3. The laboratory sand and gravel aggregate processing and crushing device as described in claim 1, characterized in that, The lifting assembly includes a shaft (404) disposed at the central axis of the vertical housing (4); it also includes a spiral conveyor plate (405) disposed around the shaft (404); the bottom end of the discharge port (201) is also provided with an outwardly extending discharge plate (406); one end of the feed plate (403) is connected to the bottom end of the spiral conveyor plate (405), and the other end extends to the bottom of the discharge plate (406); the top end of the spiral conveyor plate (405) is provided with a horizontal section extending to the top of the feed port (101); It also includes a first vibration motor (407) disposed on one side of the outer wall of the housing (4), the first vibration motor (407) being inclined; it also includes a second vibration motor (408) disposed on the outer wall of the housing (4) opposite to the first vibration motor (407), the vibration direction of the second vibration motor being perpendicular to that of the first vibration motor (407); The bottom of the outer shell (4) is also provided with a first vibration spring (409), and the first vibration spring (409) is connected to a horizontal connecting plate (410) below. The horizontal connecting plate (410) is fixedly connected to the outer wall of the screening box (2), and the outer shell (4) is connected to the outer wall of the screening box (2) through a connecting spring.

4. The laboratory sand and gravel aggregate processing and crushing device as described in claim 1, characterized in that, The crushing assembly includes a first crushing roller (501) and a second crushing roller (502) disposed in the crushing box (1), wherein the crushing teeth of the first crushing roller (501) and the second crushing roller (502) mesh with each other; the first crushing roller (501) is driven by a first crushing motor outside the crushing box (1) to rotate toward the second crushing roller (502), and the second crushing roller (502) is a fixed roller.

5. The laboratory sand and gravel aggregate processing and crushing device as described in claim 1, characterized in that, The crushing assembly includes a first crushing roller (501) and a second crushing roller (502) disposed in the crushing box (1); the first crushing roller (501) and the second crushing roller (502) rotate in opposite directions and the crushing teeth mesh with each other; the first crushing roller (501) is driven to rotate by a first crushing motor outside the crushing box (1), and the second crushing roller is driven to rotate by a second crushing motor outside the crushing box (1).

6. The laboratory sand and gravel aggregate processing and crushing device as described in claim 1, characterized in that, The lower half of the inner wall of the screening box (2) is funnel-shaped and narrows inward.

7. The laboratory sand and gravel aggregate processing and crushing device as described in claim 1, characterized in that, The screen (3) is hinged to the inner wall of the screening box (2) at one end near the discharge port (201), and a second vibration spring (301) is provided on the lower surface of the end away from the discharge port (201). The inner wall of the screening box (2) is also provided with a horizontal placement platform (302), and the lower end of the second vibration spring (301) is connected to the horizontal placement platform (302).

8. The laboratory sand and gravel aggregate processing and crushing device as described in claim 7, characterized in that, The screen (3) is also equipped with a third vibration motor (304) perpendicular to the screen (3).

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