Earthwork broken stone crushing device

Abstract

The utility model relates to an earthwork broken stone crushing device which comprises a crushing box with a feeding hole, a crushing motor and a grinding roller, a main body pipe is arranged on a feeding port of the smashing box, a feeding hopper is welded to the upper end in the main body pipe, a stone storage structure is arranged in a funnel pipe of the feeding hopper, and stone enters the stone storage structure through the feeding hopper. Two telescopic motors are symmetrically arranged in a cavity between the main body pipe and the feeding hopper, the telescopic motors work to drive the lower end of the stone storage structure to enter the smashing box and feed stone into the smashing box, and the upper end of the stone storage structure and the feeding hopper are sealed through an upper feeding sliding plate. When the crushing motor drives the grinding rollers to crush stones, broken stone dust is sealed in the crushing box by the feeding upper sliding plate and cannot overflow. The earthwork broken stone crushing device is reasonable in design, novel in structure, firm, durable and good in dust sealing effect, and components cannot be damaged in operation. By using the earthwork broken stone crushing device, broken stone dust pollution is prevented, the working environment is protected, and the physical and psychological health of workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to a crushing device, in particular to an earth and stone crushing device. Background Art

[0002] During construction, gravel from earth and stone can be reused after being crushed. The crushing process generates a large amount of dust, polluting the environment. To address the problem of dust pollution during the crushing process, existing patent literature provides numerous technical solutions. These solutions generally employ water curtain dust removal, water filtration dust removal, and exhaust filter dust removal. Furthermore, Chinese Patent Publication No. CN217249189U, titled "A Safe Crushing Device for Crushed Stone Processing," and CN109261267A, titled "Environmentally Friendly Construction Gravel Crushing Device," both employ comprehensive technical solutions: First, a fan is installed and exhaust dust removal is performed using a filter; second, the feed port is sealed with a flip cover. When the gravel passes through the feed port, the pressure from the gravel causes the flip cover to flip while also compressing the spring via a connecting rod. After the gravel enters the crushing box, the flip cover returns to its original position due to the spring force, sealing the feed port and preventing dust generated during the crushing of the gravel from escaping through the feed port. If gravel accumulates at the feed inlet during operation, the flip cover will not be able to close the feed inlet, allowing dust to continue to overflow and incomplete pollution prevention. In addition, the flow of gravel may bump against and damage the spring, making it impossible for the flip cover to return to its original position, completely losing the device's ability to prevent dust pollution. Utility Model Content

[0003] The purpose of the utility model is to provide an earthwork and stone crushing device with reasonable design, novel structure, durability, no damage to any components during operation, and better dust pollution prevention effect in view of the shortcomings of the existing technology.

[0004] The purpose of the present invention can be achieved. The present invention comprises a crushing box with a feed port, a crushing motor outside the crushing box, and a grinding roller connected to the crushing motor inside the crushing box. The present invention is characterized in that: a main body tube is provided above the feed port of the crushing box, and a funnel-shaped feed hopper composed of a conical trumpet mouth and a cylindrical funnel tube is provided in the main body tube. The upper edge of the trumpet mouth of the feed hopper is welded to the upper edge of the main body tube, and two arc-shaped connecting plates are symmetrically provided in the funnel tube of the feed hopper. The arc-shaped outer walls of the two connecting plates are fitted and slidably connected with the inner tube wall of the feed hopper funnel tube along the length direction. A circular feed upper slide is welded to the top of the two connecting plates, and a circular discharge lower slide is welded to the bottom. The feed upper slide and the discharge lower slide are welded to each other. The outer diameter of the slide plate forms a sliding pair structure with the inner diameter of the feed hopper funnel tube. The upper part of the two structural spacings between the two connecting plates and the upper edge of the funnel tube constitute a gravel feed port, and the lower part and the bottom end of the funnel tube constitute a gravel discharge port. The cavity enclosed by the feed hopper funnel tube and the two connecting plates constitutes a stone storage cavity. The two connecting plates, the upper feed slide plate, the lower discharge slide plate and the stone storage cavity constitute a stone storage structure. A cavity is formed between the main tube and the feed hopper. A telescopic motor is symmetrically fixed in the cavity behind the two connecting plates. The two telescopic motors are welded to the lower surface of the lower discharge slide plate through their respective connecting plates. The two connecting plates, the upper feed slide plate, the lower discharge slide plate, the stone storage cavity, the telescopic motor and the two connecting plates together constitute a stone conveying structure.

[0005] The utility model discloses an earthwork and stone crushing device, wherein the telescopic motor drives the stone storage structure through the connecting plate to have a motion track which moves up and down along the inner wall of the feed hopper funnel tube.

[0006] The utility model discloses an earthwork and stone crushing device, wherein the vertical center lines of the main pipe, the feed hopper and the stone conveying structure and the vertical center line of the crushing box feed port coincide with each other on a coaxial line, and the diameter of the crushing box feed port is slightly larger than the maximum straight-line distance between the two connecting plates of the stone conveying structure.

[0007] The utility model discloses an earthwork and stone crushing device, wherein the feed upper slide plate is located at the upper end of the feed hopper funnel pipe mouth, the gravel feed port is open, the discharge lower slide plate is located in the feed hopper funnel pipe, the gravel discharge port is closed to put the stone into the stone storage chamber in a stone storage state; the feed upper slide plate moves down into the hopper funnel pipe, the gravel feed port is closed, the discharge lower slide plate moves down and detaches from the feed hopper funnel pipe mouth and enters the crushing box, the gravel discharge port is open to put the stone into the crushing box in a stone crushing and dust removal state.

[0008] The utility model discloses an earth and stone crushing device, wherein the upper feed slide plate and the lower discharge slide plate are both conical, with the cone tips facing upwards, and the upper surfaces of the cones form a crushed stone slideway.

[0009] The utility model discloses an earthwork and stone crushing device, wherein an annular groove is provided around the outer wall of the upper feed slide plate, a rubber ring is embedded in the annular groove, and the rubber ring is in a state of fitting and sealing connection with the inner wall of the funnel tube when entering the funnel tube of the feed hopper.

[0010] The utility model discloses an earth and stone crushing device, wherein the bottom of the inner wall of the main body tube is provided with an anti-collision rubber pad.

[0011] The utility model discloses an earthwork and stone crushing device, wherein the telescopic motor is fixed in a cavity between a main body pipe and a feed hopper by welding an accessory.

[0012] The present invention differs from existing technologies in that it includes a crushing box with a feed inlet, a motor, and crushing rollers within the crushing box. Above the crushing box feed inlet is a main tube, welded to the upper end of which is a feed hopper consisting of a conical bell mouth and a cylindrical funnel tube. The feed hopper houses a stone storage structure, through which stone enters the stone storage structure. Two telescopic motors are symmetrically positioned within the cavity between the main tube and the feed hopper. These motors drive the lower end of the stone storage structure into the crushing box and deposit the stone into the crushing box, where the crushing motors drive the rollers to crush the stone. During the stone crushing process, the upper feed slide in the stone storage structure is sealed to the feed hopper funnel tube by a rubber ring. Dust generated during stone crushing is trapped within the crushing box and prevented from escaping, thus preventing dust pollution. The present invention features a rational design, novel structure, and durability, and no components are damaged during operation. The use of the earthwork and stone crushing device of the utility model protects the working environment and ensures the physical and mental health of workers.

[0013] The earthwork and stone crushing device of the present invention will be further described below with reference to the accompanying drawings. The accompanying drawings are only schematic illustrations of the basic structure of the present invention, and therefore only show structures related to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the earthwork and stone crushing device of the utility model.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the earthwork and stone crushing device including the rollers in the crushing box of the utility model.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the main tube and the feed hopper in the utility model.

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the main pipe, feed hopper, and stone conveying structure (stone storage state not connected to the crushing box).

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the main pipe, feed hopper, and stone conveying structure (stone distribution state connected to the crushing box). DETAILED DESCRIPTION

[0019] like Figure 1 、 Figure 2 As shown, the earthwork and stone crushing device of the present invention includes a crushing box 11 with a feed port, a crushing motor 12 outside the crushing box 11, and a grinding roller 13 connected to the crushing motor 12 in the crushing box 11. A main body pipe 14 is provided above the feed port of the crushing box 11.

[0020] like Figure 3 、 Figure 4 、 Figure 5 As shown, a funnel-shaped feed hopper 21, consisting of a conical bell mouth and a cylindrical funnel tube, is positioned within the main tube 14. The upper edge of the bell mouth of the feed hopper 21 is welded to the upper edge of the main tube 14. Two curved connecting plates 22 are symmetrically positioned within the funnel tube of the feed hopper 21. The curved outer walls of the two connecting plates 22 slide in contact and slide along the length of the inner wall of the funnel tube of the feed hopper 21. A circular upper feed slide 23 is welded to the top of the two connecting plates 22, and a circular lower discharge slide 24 is welded to the bottom. The outer diameters of the upper feed slide 23 and the lower discharge slide 24 form a sliding pair with the inner diameter of the funnel tube of the feed hopper 21. The two structural gaps between the two connecting plates 22: their upper portion and the upper edge of the funnel tube form the gravel feed inlet; their lower portion and the bottom end of the funnel tube form the gravel discharge outlet. The cavity enclosed by the funnel tube of the feed hopper 21 and the two connecting plates 22 constitutes the stone storage chamber a. The two connecting plates 22, the upper feed slide 23, the lower discharge slide 24, and the stone storage chamber a constitute the stone storage structure. A cavity is formed between the main tube 14 and the feed hopper 21. Within this cavity, two telescopic motors 25 are symmetrically secured behind each of the two connecting plates 22. The telescopic motors 25 are welded to the cavity between the main tube 14 and the feed hopper 21 via accessories. Mounting the telescopic motors 25 behind the connecting plates 22 protects them from impacts caused by stone debris. The two telescopic motors 25 are welded to the underside of the lower discharge slide 24 via their respective connecting plates 26. The two connecting plates 22, the upper feed slide 23, the lower discharge slide 24, the stone storage chamber a, the telescopic motors 25, and the two connecting plates 26 collectively constitute the stone conveying structure.

[0021] In the earthwork and stone crushing device of the present invention, the telescopic motor 25 drives the stone storage structure through the connecting plate 26 to have a motion trajectory that moves up and down along the inner wall of the funnel tube of the feed hopper 21.

[0022] like Figure 4As shown, the upper feed slide 23 is located at the upper end of the funnel tube of the feed hopper 21, the gravel feed port is open, the lower discharge slide 24 is located in the funnel tube of the feed hopper 21, and the gravel discharge port is closed for the stone to enter the stone storage chamber a.

[0023] like Figure 5 As shown, the upper feed slide 23 moves down to the funnel tube of the hopper 21, the gravel feed port is closed, the lower discharge slide 24 moves down to separate from the funnel tube port of the feed hopper 21 and enter the crushing box 11, and the gravel discharge port is opened to distribute the stone to the crushing box 11 for stone crushing and dust removal.

[0024] like Figure 1 、 Figure 4 、 Figure 5 As shown, in the earthwork and stone crushing device of the present invention, the vertical center lines of the main pipe 14, the feed hopper 21 and the stone conveying structure are coaxial with the vertical center line of the feed port of the crushing box 11, and the diameter of the feed port of the crushing box 11 is slightly larger than the maximum straight-line distance between the two connecting plates 26 of the stone conveying structure, so that the stone conveying structure can smoothly enter and exit the crushing box 11.

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, the feed upper slide 23 and the discharge lower slide 24 are both conical, with the cone tip facing upward, and the upper surface of the cone forms a gravel slide. This design is more conducive to the flow of gravel, and gravel is not easily accumulated on the feed upper slide 23 and the discharge lower slide 24, so that all gravel can flow and slide away smoothly.

[0026] like Figure 1-Figure 5 As shown, an annular groove is provided around the outer wall of the upper slide plate 23, and a rubber ring 27 is embedded in the annular groove. When the rubber ring 27 enters the funnel tube state of the feed hopper 21, it is in close sealing connection with the inner wall of the funnel tube.

[0027] like Figure 4 、 Figure 5 As shown, the bottom of the inner wall of the main tube 14 is provided with an anti-collision rubber pad 28. The anti-collision rubber pad 28 can reduce the collision of the inner wall of the main tube 14 when gravel enters, and protect the inner wall of the main tube 14.

[0028] When crushing earth and stone, the crushed stone is placed directly into the feed hopper 21. The crushed stone then slides through the conical surface of the upper feed slide 23 from the stone feed opening into the stone storage chamber a. Once the stone storage chamber a is filled with crushed stone, the telescopic motor 25 is activated, pushing the connecting plate 26 downward, driving the stone storage structure downward as well, transporting the crushed stone from the stone storage chamber a downward. When the bottom of the lower discharge slide 24 is lower than the bottom of the feed hopper 21, the crushed stone is no longer restricted by the feed hopper 21 and can fall from both sides of the stone storage chamber a into the crushing box 11. The grinding rollers 13 in the crushing box 11 are driven by the crushing motor 12 to crush the crushed stone. During the crushing process, the upper feed slide 23 and the feed hopper 21 are sealed by a rubber ring 27, preventing dust from flying out and preventing dust pollution.

[0029] The above-described embodiments are merely descriptions of preferred implementation methods of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for crushing earth and stone, comprising a crushing box (11) with a feed port, a crushing motor (12) outside the crushing box (11), and a roller (13) connected to the crushing motor (12) inside the crushing box (11), characterized in that: A main body tube (14) is provided above the feed port of the crushing box (11), and a funnel-shaped feed hopper (21) composed of a cone-shaped trumpet mouth and a cylindrical funnel tube is provided in the main body tube (14). The upper edge of the trumpet mouth of the feed hopper (21) is welded to the upper edge of the main body tube (14), and two arc-shaped connecting plates (22) are symmetrically provided in the funnel tube of the feed hopper (21). The arc-shaped outer walls of the two connecting plates (22) are slidably connected to the inner tube wall of the funnel tube of the feed hopper (21) along the length direction. A circular feed upper slide plate (23) is welded to the top of the two connecting plates (22), and a circular discharge lower slide plate (24) is welded to the bottom. The outer diameters of the feed upper slide plate (23) and the discharge lower slide plate (24) are both in a sliding pair structure with the inner diameter of the funnel tube of the feed hopper (21). The two connecting plates (22) are connected to each other. The upper part of the structure and the upper edge of the funnel tube form a crushed stone feed port, and the lower part and the bottom end of the funnel tube form a crushed stone discharge port. The cavity enclosed by the feed hopper (21), the funnel tube and the two connecting plates (22) constitutes a stone storage chamber a. The two connecting plates (22), the feed upper slide plate (23), the discharge lower slide plate (24) and the stone storage chamber a constitute a stone storage structure. A cavity is formed between the main tube (14) and the feed hopper (21). A telescopic motor (25) is symmetrically fixed in the cavity behind the two connecting plates (22). The two telescopic motors (25) are welded to the lower surface of the discharge lower slide plate (24) through their respective connecting plates (26). The two connecting plates (22), the feed upper slide plate (23), the discharge lower slide plate (24), the stone storage chamber a, the telescopic motor (25) and the two connecting plates (26) together constitute a stone conveying structure.

2. The earthwork and stone crushing device according to claim 1, characterized in that: The telescopic motor (25) drives the stone storage structure through the connecting plate (26) to have a motion trajectory that moves up and down along the inner wall of the funnel tube of the feed hopper (21).

3. The earthwork and stone crushing device according to claim 1 or 2, characterized in that: The vertical center lines of the main pipe (14), the feed hopper (21) and the stone conveying structure are coaxial with the vertical center line of the feed opening of the crushing box (11), and the diameter of the feed opening of the crushing box (11) is slightly larger than the maximum straight-line distance between the two connecting plates (26) of the stone conveying structure.

4. The earthwork and stone crushing device according to claim 1 or 2, characterized in that: The upper feed slide (23) is located at the upper end of the funnel pipe opening of the feed hopper (21), the crushed stone feed opening is open, the lower discharge slide (24) is located in the funnel pipe of the feed hopper (21), the crushed stone discharge opening is closed, and the stone enters the stone storage chamber a in a stone storage state; the upper feed slide (23) moves down into the funnel pipe of the hopper (21), the crushed stone feed opening is closed, the lower discharge slide (24) moves down and detaches from the funnel pipe opening of the feed hopper (21) and enters the crushing box (11), the crushed stone discharge opening is open, and the stone is distributed to the crushing box (11) in a stone crushing and dust removal state.

5. The earthwork and stone crushing device according to claim 4, characterized in that: The feeding upper slide plate (23) and the discharging lower slide plate (24) are both conical, with the cone tip facing upward, and the upper surface of the cone forms a gravel slide.

6. The earthwork and stone crushing device according to claim 5, characterized in that: An annular groove is provided around the outer wall of the upper feed slide plate (23), and a rubber ring (27) is embedded in the annular groove. When the rubber ring (27) enters the funnel tube of the feed hopper (21), it is in a sealed connection with the inner wall of the funnel tube.

7. The earthwork and stone crushing device according to claim 1, characterized in that: The telescopic motor (25) is fixed in the cavity between the main tube (14) and the feed hopper (21) by welding an accessory.

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