Heavy vibrating screen

Abstract

The utility model provides a heavy vibrating screen which comprises a machine shell, a feeding port and a discharging port are formed in the upper face and the lower face of the machine shell respectively, a screen is arranged in the machine shell in a sliding mode, two sets of rotatable installation shafts are arranged in the machine shell, chain wheels are arranged at the two ends of each installation shaft, and a set of chain is arranged on every two sets of chain wheels in a sleeved mode. A plurality of sets of bearing rods are annularly arranged in the machine shell at intervals, and the two ends of the bearing rods are fixedly connected with the sections of the chain wheels. When the vibrating screen is used, in the falling process of gravels, large-size stones in the gravels can be blocked through the multiple sets of bearing rods arranged at intervals, the large-size stones in the gravels can be continuously received and then discharged through arrangement of the chains and the chain wheels, and therefore damage to the screen in the screening process is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel screening, in particular to a heavy-duty vibrating screen. Background Art

[0002] In the production of sand and gravel crushing, sand making and mineral processing, screening process is an indispensable and important link. Screening is required before crushing to avoid over-crushing of small pieces of material. This part of the material can be directly sent to subsequent equipment to improve production efficiency. Screening is also required after crushing to control the particle size of the crushed product. Therefore, a wide range of screening equipment of various formats is needed.

[0003] For example, the Chinese utility model patent with patent number 202323061788.0 provides a sand and gravel screening device, which inserts the sieve plate into the slot body of the outer shell. When you want to replace the sieve plate with other apertures, you only need to pull out the original sieve plate, insert the sieve plate with other apertures into the slot body and fix it with a lock. This allows the size of the sieve holes of the screening device to change according to the changes in the sand and gravel particle size, making the sand and gravel screening more detailed.

[0004] In the coarse screening stage, due to the large difference in sand particles and the presence of a large number of large-particle stones, conventional vibrating screen devices are difficult to ensure the coarse screening capacity. Larger stones falling on the screen can easily cause damage to the screen, resulting in high equipment maintenance frequency and cost. Therefore, in view of this, a heavy-duty vibrating screen is proposed to solve the above technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model proposes a heavy-duty vibrating screen to solve the technical problem raised in the above background technology that when the existing screening device is screening sand and gravel, the larger stones in the sand and gravel fall onto the screen, and the impact force between the screen and the screen is relatively large, which can easily cause damage to the screen.

[0006] In order to achieve the above object, the utility model provides the following technical solution, a heavy-duty vibrating screen, comprising:

[0007] The casing has a feed inlet and a discharge outlet respectively arranged on the upper and lower sides thereof;

[0008] A screen, slidably disposed in the housing;

[0009] There are two sets of mounting shafts, which are rotatably arranged in the housing, and sprockets are arranged at both ends of the mounting shafts;

[0010] Chains are provided in two groups and are mounted on two of the groups of sprockets; and

[0011] The load-bearing rods are arranged in a plurality of groups at intervals in the circumferential direction, and both ends of the load-bearing rods are fixedly connected to the segments of the sprocket.

[0012] In a preferred embodiment, a drive motor is disposed on one side of the housing, and an output shaft of the drive motor is connected to one set of the mounting shafts.

[0013] In a preferred embodiment, the inner wall of the casing is provided with a slide rail, the slide rail is arranged obliquely along a horizontal plane, and the side wall of the screen is provided with a guide wheel, and the guide wheel is slidably mounted on the slide rail.

[0014] In a preferred embodiment, a linkage mechanism is provided in the casing, and the rotation of the mounting shaft is converted into the sliding of the screen along the slide rail by the linkage mechanism.

[0015] In a preferred embodiment, the linkage mechanism includes:

[0016] A driving gear, disposed on one of the sets of mounting shafts and coaxially connected thereto;

[0017] A driven gear is rotatably disposed in the housing along its axis and meshes with the driving gear, and a rocker arm is disposed on the driven gear; and

[0018] A driving rod has one end hinged to the rocker arm and the other end hinged to the screen.

[0019] In a preferred embodiment, an L-shaped load-bearing frame is provided in the housing, and the end of the load-bearing rod is mounted on the load-bearing frame.

[0020] In a preferred embodiment, a receiving frame is provided at the bottom of the housing, a detachable receiving frame is provided inside the receiving frame, and a guide frame is provided on the receiving frame.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] When the vibrating screen is in use, the sand and gravel to be screened are poured into the casing through the feed port. In the process of falling, the larger stones in the sand and gravel can be blocked by multiple groups of load-bearing bars arranged at intervals, and the smaller stones can fall onto the screen. The sand and gravel can be screened by controlling the vibration of the screen, and the load-bearing bars can be driven to move circumferentially by controlling the rotation of the installation shaft, thereby transferring the stones that have fallen on the multiple groups of load-bearing bars until the corresponding chain segment moves to the sprocket position, so that the stones on the load-bearing bars can fall off, thereby continuously absorbing and discharging the larger stones in the sand and gravel, effectively avoiding damage to the screen during the screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 A three-dimensional structural schematic diagram of a heavy-duty vibrating screen provided by the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of a casing in a heavy-duty vibrating screen of the utility model;

[0026] Figure 3 This is a position relationship diagram of the chain and the screen in a heavy-duty vibrating screen of the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of a heavy-duty vibrating screen of the utility model;

[0028] Reference numerals:

[0029] 101, housing; 102, feed port; 103, discharge port; 104, receiving frame; 105, receiving frame; 106, slide rail; 107, load-bearing frame; 108, guide frame;

[0030] 201, mounting shaft; 202, sprocket; 203, driving gear; 204, driving motor; 205, chain; 206, load-bearing rod;

[0031] 301, screen; 302, guide wheel;

[0032] 401, driven gear; 402, rocker arm; 403, driving rod. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0034] Example:

[0035] like Figure 1 , 3As shown in , 4, the utility model provides a heavy-duty vibrating screen, including a housing 101, wherein the housing 101 is provided with a feed port 102 and a discharge port 103 on the upper and lower sides thereof, respectively, and a screen 301 is slidably provided inside the housing 101. When in use, sand and gravel to be screened can be poured in through the feed port 102, and the sand and gravel can be screened by controlling the screen 301 to slide back and forth quickly, and the screened sand and gravel are discharged through the discharge port 103 to collect the sand and gravel. Two groups of rotatable mounting shafts 201 are provided inside the housing 101, and sprocket wheels 202 are provided at both ends of the mounting shafts 201, and a group of chains 205 are sleeved on each of the two groups of sprocket wheels 202. A plurality of groups of load-bearing rods 206 arranged at intervals in an annular direction are also provided inside the housing 101, and both ends of the load-bearing rods 206 are fixedly connected to the segments of the sprocket wheels 202. A driving motor 204 is disposed on one side of the housing 101 , and an output shaft of the driving motor 204 is connected to one set of the mounting shafts 201 .

[0036] The driving motor 204 can be controlled to start and drive one of the groups of mounting shafts 201 to rotate, and then the two groups of chains 205 can be driven to move synchronously through the cooperation of the two groups of mounting shafts 201 and the sprockets 202 above them, so as to drive the multiple groups of load-bearing rods 206 to move in a circular direction in the casing 101. When sand and gravel enter the casing 101, larger stones fall onto the load-bearing rods 206, and the load-bearing rods 206 can block the stones to prevent the stones from falling onto the screen 301 and causing damage to the screen 301. In addition, the multiple groups of load-bearing rods 206 can transfer the stones that fall above them during the movement until they move to the sprocket 202 and fall into the casing 101.

[0037] like Figure 2 , 3 As shown, in this embodiment, the inner wall of the housing 101 is provided with a slide rail 106, which is arranged obliquely along the horizontal plane, and the side wall of the screen 301 is provided with a guide wheel 302, which is slidably mounted on the slide rail 106. The movement of the screen 301 can be guided by the cooperation of the slide rail 106 and the guide wheel 302, and the screen 301 is arranged obliquely as a whole, so that the sand and gravel on the screen 301 can fall off easily during the screening process.

[0038] like Figure 3 , 4 As shown, in this embodiment, a linkage mechanism is provided in the housing 101, and the rotation of the mounting shaft 201 is converted into the sliding of the screen 301 along the slide rail 106 through the linkage mechanism. The linkage mechanism includes a driving gear 203 provided on one set of the mounting shafts 201 and coaxially connected thereto, a rotatable driven gear 401 is provided in the housing 101, the driven gear 401 is meshed with the driving gear 203, a rocker arm 402 is provided on the driven gear 401, one end of the driving rod 403 is hinged to the rocker arm 402, and the other end is hinged to the screen 301.

[0039] The mounting shaft 201 drives the driving gear 203 to rotate during the rotation process, and then drives the rocking arm 402 to rotate through the meshing of the driving gear 203 and the driving gear 203. The rocking arm 402 can control the screen 301 to slide back and forth along the slide rail 106 in the casing 101 through the driving rod 403 during the continuous rotation process to screen sand and gravel, which fully utilizes the kinetic energy of the driving motor 204, making the structure of the vibrating screen simpler, and the diameter of the driving gear 203 is larger than that of the driven gear 401, so that the driving gear 203 can control the screen 301 to reciprocate quickly during the slow rotation process, so as to improve the screening efficiency.

[0040] like Figure 2 , 3 As shown, in this embodiment, an L-shaped load-bearing frame 107 is provided in the housing 101, and the end of the load-bearing rod 206 is mounted on the load-bearing frame 107. The end of the load-bearing rod 206 can be supported by the load-bearing frame 107, so as to avoid excessive impact force on the load-bearing rod 206 when a heavy stone falls on the load-bearing rod 206, thereby causing the end of the load-bearing rod 206 to be separated from the chain 205, thereby improving the practicality and service life of the device.

[0041] like Figure 2 , 4 As shown, in this embodiment, a receiving frame 104 is provided at the bottom of the housing 101, a detachable receiving frame 105 is provided in the receiving frame 104, and a guide frame 108 is provided on the receiving frame 104. After the larger sand and gravel falls onto the load-bearing rod 206, the load-bearing rod 206 is driven to move by the cooperation of the sprocket 202 and the chain 205 to translate the stone, until the stone moves to the axial position of the sprocket 202 and falls under the action of its own gravity, and the stone is guided into the receiving frame 105 by the guide frame 108. During the screening process, the stone on the screen 301 can also be guided by the guide frame 108 and fall into the receiving frame 105, so that the screened stones can be collected conveniently.

[0042] Specific usage and beneficial effects of the utility model:

[0043] When the vibrating screen is in use, the sand and gravel to be screened are poured into the casing 101 through the feed port 102. During the falling process, the sand and gravel can be blocked by multiple groups of load-bearing rods 206 arranged at intervals, and the smaller stones can fall onto the screen 301. The sand and gravel can be screened by controlling the vibration of the screen 301, and the mounting shaft 201 can be driven to rotate by controlling the drive motor 204 to make the multiple groups of load-bearing rods 206 move in a circumferential direction to transfer the stones that fall on the multiple groups of load-bearing rods 206 until the corresponding chain 205 segment moves to the sprocket 202 position, so that the stones on the load-bearing rods 206 can fall off, thereby continuously absorbing and discharging the larger stones in the sand and gravel, effectively avoiding damage to the screen 301 during the screening process.

[0044] The basic principle and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A heavy-duty vibrating screen, characterized in that: Included are: A casing (101) is provided with a feed inlet (102) and a discharge outlet (103) on its upper and lower surfaces respectively; A screen (301) slidably disposed in the housing (101); Two sets of mounting shafts (201) are provided and are rotatably disposed in the housing (101), and sprockets (202) are disposed at both ends of the mounting shafts (201); The chain (205) is provided in two groups and is sleeved on two groups of the sprockets (202); and The load-bearing rods (206) are arranged in a plurality of groups at intervals in the annular direction, and both ends of the load-bearing rods are fixedly connected to the segments of the sprocket wheel (202).

2. A heavy-duty vibrating screen according to claim 1, characterized in that: A drive motor (204) is disposed on one side of the housing (101), and an output shaft of the drive motor (204) is connected to one set of the mounting shafts (201).

3. A heavy-duty vibrating screen according to claim 1, characterized in that: The inner wall of the housing (101) is provided with a slide rail (106), and the slide rail (106) is arranged obliquely along a horizontal plane. The side wall of the screen (301) is provided with a guide wheel (302), and the guide wheel (302) is slidably mounted on the slide rail (106).

4. A heavy-duty vibrating screen according to claim 3, characterized in that: A linkage mechanism is provided in the housing (101), and the rotation of the mounting shaft (201) is converted into sliding of the screen (301) along the slide rail (106) through the linkage mechanism.

5. A heavy-duty vibrating screen according to claim 4, characterized in that: The linkage mechanism comprises: A driving gear (203) is arranged on one of the sets of the mounting shafts (201) and is coaxially connected thereto; A driven gear (401) is rotatably arranged along its axis in the housing (101) and meshes with the driving gear (203). A rocker arm (402) is arranged on the driven gear (401); and A driving rod (403) has one end hinged to the rocker arm (402) and the other end hinged to the screen (301).

6. A heavy-duty vibrating screen according to claim 1, characterized in that: An L-shaped load-bearing frame (107) is arranged inside the housing (101), and the end of the load-bearing rod (206) is mounted on the load-bearing frame (107).

7. A heavy-duty vibrating screen according to claim 1, characterized in that: A receiving frame (104) is arranged at the bottom of the housing (101), a detachable receiving frame (105) is arranged inside the receiving frame (104), and a guide frame (108) is arranged on the receiving frame (104).

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