Dust-free low-noise aggregate shaking sieve machine
By installing a sound-absorbing foam plastic shell, a water tank spray system and a buffer pad on the shaking screen machine, the noise and dust pollution problems of the shaking screen machine are solved, a low-noise and dust-free screening environment is achieved, and the test efficiency is improved.
Patent Information
- Application Number
- CN202422692300.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The existing shaking screen machine generates huge noise and dust pollution during the screening process of aggregates, affecting the test environment and efficiency.
The shell is sealed with sound-absorbing foam plastic to absorb noise, and a water tank and a spray head are set on the shaking screen to suppress the diffusion of dust by spraying water mist. At the same time, a buffer pad is set on the inner wall of the metal mesh screen to reduce noise and dust generation.
It effectively reduces the noise of the shaking screen machine, prevents dust from spreading, improves the test environment, and increases test efficiency.
Smart Images
Figure CN223381946U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of screening of road materials, and in particular relates to a dust-free and low-noise aggregate shaking screen machine. Background Art
[0002] Coarse aggregate is a crucial component of the skeletal structure of asphalt pavement surface and base layers. When conducting indoor testing on mixtures such as asphalt mixtures and inorganic binder-stabilized materials, the coarse aggregate must first be screened into the desired particle size ranges, then mixed in the desired proportions and combined with the binder to form the mixture. The "Highway Engineering Aggregate Testing Procedure" (JTG3432-2024) specifies that during coarse aggregate screening tests, the unscreened aggregate sample must be placed on a set of sieves arranged in descending order of mesh size. After the sieves are covered, the sample must be screened using a shaker or manually for approximately 10 minutes. Because the sieve is made of metal, the constant collision of aggregate with the sieve and aggregate with aggregate during the sieving process is extremely noisy, causing significant disturbance to nearby test personnel and residents. Furthermore, because the aggregate is unscreened and unwashed, it contains a large amount of mineral powder. When the sieve is shaken and sieved, this mineral powder is shaken out and diffused into the air, polluting the test environment. Inhalation of dust by test personnel also has certain health effects. Therefore, test personnel must wait until the mineral dust has settled before continuing the test, which greatly affects the test environment and test efficiency, and places higher demands on the test equipment. Utility Model Content
[0003] The utility model aims to solve the problem of excessive noise and dust generated during the process of screening aggregates by a shaking screen machine at the current stage.
[0004] The utility model provides the following technical solutions: a dust-free and low-noise aggregate shaking screen machine, comprising a cabinet body, a cabinet door and a shaking screen machine; the cabinet door is hinged to the cabinet body, and a shell composed of the cabinet door and the cabinet body covers the outside of the shaking screen machine; the cabinet door and the inner wall of the cabinet body are provided with a sound-absorbing structure; a sealed water tank is installed on the top of the cabinet body, and a water inlet with a sealing plug is provided on the top of the water tank; a vertical piston chamber is provided on the top of the water tank, and the outlet of the air guide pipe connected to the bottom of the piston chamber is located above the liquid level in the water tank, and a sliding seal in the piston chamber is provided. The package is equipped with a piston, the top of the piston is connected to a pressure rod, the top of the piston cavity passes through the top of the water tank and communicates with the outside world, a through hole is opened on the piston, and a valve plate is hinged at the bottom of the through hole. A torsion spring is connected between the valve plate and the piston, and the torsion spring pushes the valve plate so that the valve plate cover closes the through hole on the piston. When the piston is lifted upward, the air pressure pushes the valve plate to open; a water outlet pipe is connected to the water tank, and the water inlet of the water outlet pipe penetrates from the top of the water tank and extends below the liquid level, and the water outlet of the water outlet pipe extends into the cabinet and is connected to the spray head on the top of the cabinet.
[0005] Furthermore, the air guide tube at the bottom of the piston chamber extends into the liquid level in the water tank and then extends upward out of the liquid level.
[0006] Furthermore, four spray heads are installed on the top of the cabinet, and the four spray heads are evenly spaced around the shaking screen machine. The four spray heads are interconnected through a cross branch pipe, and the water outlet pipe is connected to the cross branch pipe.
[0007] Furthermore, a valve is provided on the water outlet pipe.
[0008] Furthermore, the shaking screen machine includes a shaking screen machine base, a screen base, a metal mesh screen, a shaking screen machine support rod, a shaking screen machine top connecting frame and a shaking screen machine screen pressing piece; the shaking screen machine base is sealed and connected to the inner wall of the cabinet, and the cabinet door is connected to the shaking screen machine base after closing; the screen base is arranged on the top of the shaking screen machine base, and several metal mesh screens are stacked on the top of the screen base, the shaking screen machine support rod surrounds the metal mesh screen, the bottom of the shaking screen machine support rod is connected to the screen base, the shaking screen machine top connecting frame is connected between the tops of the shaking screen machine support rods, the shaking screen machine screen pressing piece can be slidably mounted on the shaking screen machine support rod, and the shaking screen machine screen pressing piece is pressed on the top metal mesh screen.
[0009] Furthermore, a buffer pad is provided on the inner wall of the metal mesh screen.
[0010] Furthermore, a sealing ring is provided on the bottom surface of the piston around the through hole.
[0011] Furthermore, the cabinet door and the inner wall of the cabinet body are paved with sound-absorbing foam plastic, which serves as a sound-absorbing structure.
[0012] Compared with the prior art, the advantages of this utility model are:
[0013] 1. The shell composed of the cabinet door and the cabinet body is provided with sound-absorbing foam plastic, which has a good sound-absorbing effect. When the shaking screen machine shakes the aggregate, it will generate a large noise. These noises will be absorbed by the sound-absorbing foam plastic in the closed shell, greatly reducing the noise generated by the shaking screen.
[0014] 2. The cabinet is equipped with a water tank and spray nozzles. After the sieve shaker is finished, the tester can press the handle to spray water mist into the shell. The cross branch pipe and four spray nozzles ensure that the water mist is evenly sprayed throughout the cabinet, effectively preventing the spread and diffusion of mineral dust particles generated during the sieve shaker, purifying the test environment and reducing the tester's exposure to dust particles. At the same time, the tester does not need to wait for the dust to settle before testing, which also improves test efficiency.
[0015] 3. The inner wall of the metal mesh screen is provided with a buffer pad. When the screen shaker shakes the aggregate, the aggregate will not directly collide with the side wall of the metal mesh screen, but will collide with the buffer pad, thereby reducing the noise generated when the aggregate collides with the side wall of the metal mesh screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the utility model;
[0017] Figure 2 is a schematic diagram of the water tank;
[0018] Figure 3 Schematic diagram of a sieve shaker;
[0019] Figure 4 is a schematic diagram of a metal mesh screen;
[0020] Figure 5 Schematic diagram of the arrangement of the spray head;
[0021] Figure 6 Schematic diagram of the piston.
[0022] In the figure: 1-cabinet door; 2-sound-absorbing structure; 3-cabinet body; 4-water tank; 5-sealing plug; 6-handle; 7-pressure rod; 8-piston; 8.1-through hole; 8.2-valve plate; 9-valve; 10-water outlet pipe; 11-top connecting frame of the shaking sieve machine; 12-shaking sieve machine support rod; 13-shaking sieve pressure piece of the shaking sieve machine; 14-metal mesh screen; 14.1-buffer pad; 15-sieve base; 16-shaking sieve machine base; 17-spray head; 18-cross branch pipe; 19-piston chamber; 20-air guide pipe; 21-shaking sieve machine power cord. DETAILED DESCRIPTION
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative work.
[0024] like Figure 1 、 Figure 2The figure shows: a dust-free and low-noise aggregate shaking screen machine, comprising a cabinet body 3, a cabinet door 1 and a shaking screen machine; the cabinet door 1 is hinged to the cabinet body 3, and a lock is provided between the cabinet door 1 and the cabinet body 3, and the cabinet door 1 is locked after closing; the shell composed of the cabinet door 1 and the cabinet body 3 covers the outside of the shaking screen machine; the inner walls of the cabinet door 1 and the cabinet body 3 are provided with a sound-absorbing structure 2; a sealed water tank 4 is installed on the top of the cabinet body 3, and a water inlet with a sealing plug 5 is provided on the top of the water tank 4. After opening the sealing plug 5, clean water is poured into the water tank 4; a vertical piston chamber 19 is provided on the top of the water tank 4, and the outlet of the air guide pipe 20 connected to the bottom of the piston chamber 19 is located above the liquid level in the water tank 4, and a piston 8 is slidingly sealed in the piston chamber 19, and the top of the piston 8 is connected to the pressure rod 7, and the top of the piston chamber 19 passes through the top of the water tank 4 and the outside The boundaries are connected, a through hole 8.1 is formed on the piston 8, and a valve plate 8.2 is hinged at the bottom of the through hole 8.1. A torsion spring is connected between the valve plate 8.2 and the piston 8, and the torsion spring pushes the valve plate 8.2 so that the valve plate 8.2 covers the piston 8 and closes the through hole 8.1. When the piston 8 is lifted, the air pressure pushes the valve plate 8.2 to open, and air is admitted into the piston cavity 19 below the piston 8; when the piston 8 is pressed down, the valve plate 8.2 closes the through hole 8.1 under the action of the torsion spring, and the piston 8 presses the gas in the piston cavity 19 into the water tank 4; a water outlet pipe 10 is connected to the water tank 4, and the water inlet of the water outlet pipe 10 penetrates from the top of the water tank 4 and extends below the liquid level, and the water outlet of the water outlet pipe 10 extends into the cabinet 3 and is connected to the spray head 17 on the top of the cabinet 3; when the air pressure in the water tank 4 increases, the water is squeezed out through the water outlet pipe 10.
[0025] Specifically, the cabinet door 1 and the inner wall of the cabinet body 3 are paved with sound-absorbing foam plastic, and the sound-absorbing foam plastic serves as the sound-absorbing structure 2 .
[0026] The bottom surface of the piston 8 is provided with a sealing ring around the through hole 8.1 to increase the airtight effect.
[0027] The air guide pipe 20 at the bottom of the piston chamber 19 extends into the liquid level in the water tank 4 and then extends upward out of the liquid level.
[0028] like Figure 5 As shown, four spray heads 17 are mounted on the top of the cabinet 4 and are evenly spaced around the shaker. The four spray heads 17 are interconnected via a cross branch 18, to which the outlet pipe 10 is connected. The spray heads 17 surrounding the shaker evenly distribute water mist throughout the cabinet 4, effectively preventing the spread and diffusion of mineral dust particles generated during the shaker.
[0029] A valve 9 is provided on the water outlet pipe 10 to cut off the water flow at any time.
[0030] like Figure 1 、 Figure 3As shown: the shaking screen machine includes a shaking screen machine base 16, a screen base 15, a metal mesh screen 14, a shaking screen machine support rod 12, a shaking screen machine top connecting frame 11 and a shaking screen machine screen pressing piece 13; the shaking screen machine base 16 is sealed with the inner wall of the cabinet 3, and the cabinet door 1 is connected to the shaking screen machine base 16 after closing; the screen base 15 is arranged on the top of the shaking screen machine base 16, and several metal mesh screens 14 are stacked on the top of the screen base 15, the shaking screen machine support rod 12 surrounds the metal mesh screen 14, the bottom of the shaking screen machine support rod 12 is connected to the screen base 15, the shaking screen machine top connecting frame 11 is connected between the top of the shaking screen machine support rod 12, the shaking screen machine screen pressing piece 13 is slidably sleeved on the shaking screen machine support rod 12, and the shaking screen machine screen pressing piece 13 is pressed on the top metal mesh screen 14.
[0031] During the test, metal mesh screens 14 of different apertures need to be stacked neatly from large to small from top to bottom according to the aperture, the aggregate to be screened is placed in the metal mesh screen 14 on the top layer, and the stacked metal mesh screen 14 is placed on the screen base 15. The screen pressing piece 13 of the screen shaking machine can slide on the screen shaking machine support rod 12, and the screen pressing piece 13 of the screen shaking machine is slid and pressed to the top surface of the metal mesh screen 14 to prevent the metal mesh screen 14 from shaking and falling during the screening process.
[0032] like Figure 4 As shown: the inner wall of the metal mesh screen 14 is provided with a buffer pad 14.1; when the screen shaker shakes the aggregate, the aggregate does not directly collide with the side wall of the metal mesh screen 14, but collides with the buffer pad 14.1, reducing the noise generated when the aggregate collides with the side wall of the metal mesh screen 14.
[0033] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A dust-free and low-noise aggregate shaking screen machine, characterized by: The invention comprises a cabinet body (3), a cabinet door (1) and a shaking screen machine; the cabinet door (1) is hinged to the cabinet body (3), and the cabinet door (1) and the cabinet body (3) form a housing covering the outside of the shaking screen machine; the inner walls of the cabinet door (1) and the cabinet body (3) are provided with a sound absorbing structure (2); a sealed water tank (4) is installed on the top of the cabinet body (3), and a water inlet with a sealing plug (5) is provided on the top of the water tank (4); a vertical piston chamber (19) is provided on the top of the water tank (4), and an outlet of an air guide pipe (20) connected to the bottom of the piston chamber (19) is located above the liquid level in the water tank (4); a piston (8) is slidingly and sealingly assembled in the piston chamber (19), and a pressure rod (7) is connected to the top of the piston (8). The top of the piston (19) passes through the top of the water tank (4) and is communicated with the outside world. A through hole (8.1) is formed on the piston (8). A valve plate (8.2) is hinged at the bottom of the through hole (8.1). A torsion spring is connected between the valve plate (8.2) and the piston (8). The torsion spring pushes the valve plate (8.2) so that the valve plate (8.2) covers the piston (8) and closes the through hole (8.1). When the piston (8) is lifted upward, air pressure pushes the valve plate (8.2) to open. A water outlet pipe (10) is connected to the water tank (4). The water inlet of the water outlet pipe (10) penetrates from the top of the water tank (4) and extends below the liquid level. The water outlet of the water outlet pipe (10) extends into the cabinet (3) and is connected to the spray head (17) on the top of the cabinet (3).
2. The dust-free and low-noise aggregate screening machine according to claim 1, characterized in that: The air guide pipe (20) at the bottom of the piston chamber (19) extends into the water tank (4) below the liquid level and then extends upwards out of the liquid level.
3. The dust-free and low-noise aggregate screening machine according to claim 2, characterized in that: Four spray heads (17) are installed on the top of the cabinet (4), and the four spray heads (17) are distributed at equal intervals around the shaking screen machine. The four spray heads (17) are connected to each other through a cross branch pipe (18), and the water outlet pipe (10) is connected to the cross branch pipe (18).
4. A dust-free and low-noise aggregate screening machine according to claim 1 or 3, characterized in that: The water outlet pipe (10) is provided with a valve (9).
5. The dust-free and low-noise aggregate screening machine according to claim 1, characterized in that: The shaking screen machine comprises a shaking screen machine base (16), a screen base (15), a metal mesh screen (14), a shaking screen machine support rod (12), a shaking screen machine top connecting frame (11) and a shaking screen machine pressing member (13); the shaking screen machine base (16) is sealedly connected to the inner wall of the cabinet (3), and the cabinet door (1) is connected to the shaking screen machine base (16) after closing; the screen base (15) is arranged on the top of the shaking screen machine base (16), and a plurality of metal mesh screens are arranged on the top of the shaking screen machine base (16). The sieve (14) is stacked on the top of the sieve base (15), the shaking sieve machine support rod (12) surrounds the metal mesh sieve (14), the bottom of the shaking sieve machine support rod (12) is connected to the sieve base (15), the top of the shaking sieve machine support rod (12) is connected to the shaking sieve machine top connecting frame (11), the shaking sieve machine pressure piece (13) is slidably sleeved on the shaking sieve machine support rod (12), and the shaking sieve machine pressure piece (13) is pressed on the top metal mesh sieve (14).
6. The dust-free and low-noise aggregate screening machine according to claim 5, characterized in that: The inner wall of the metal mesh screen (14) is provided with a buffer pad (14.1).
7. The dust-free and low-noise aggregate screening machine according to claim 1, characterized in that: The bottom surface of the piston (8) is provided with a sealing ring around the through hole (8.1).
8. The dust-free and low-noise aggregate screening machine according to claim 1, characterized in that: The inner walls of the cabinet door (1) and the cabinet body (3) are paved with sound-absorbing foam plastic, and the sound-absorbing foam plastic serves as the sound-absorbing structure (2).