Sand screening machine

Abstract

The utility model discloses a sand screening machine which comprises a supporting frame, the supporting frame is installed on external equipment, a connecting mechanism is arranged on the supporting frame, and the connecting mechanism comprises a vibration frame, a bearing mechanism, a motor, a positioning sleeve, a positioning rod, a middle spring, an insertion rod, a fixing sleeve, an external spring and a fixing mechanism. The bearing mechanism is connected to the supporting frame and the vibration frame in a matched mode, the motor is installed on the supporting frame, flexible connection between the vibration motor and the vibration frame of the sand screening machine is achieved through the design of the connecting mechanism, and through the cooperation of an inserting rod and a fixing sleeve and the arrangement of a limiting sleeve and an ejector rod, vibration transmission can be guaranteed through the connecting mode, and the vibration effect is improved. The damage risk caused by rigid connection is reduced, and the connection stability is ensured through threaded connection between the spiral groove of the insertion rod and the ejector rod and sliding limiting connection between the positioning rod and the positioning sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of sand screening machines, and more specifically, to a sand screening machine. Background Art

[0002] In the existing technology, sand screening machine, as a common sand and gravel screening equipment, is widely used in the fields of construction, road construction, etc. However, the existing sand screening machine has certain defects during use. Among them, the connection method between the vibration motor and the vibration frame is a key issue. At present, most sand screening machines adopt a rigid connection method, that is, the vibration motor is directly fixed on the vibration frame. Although this connection method ensures the stable operation of the sand screening machine to a certain extent, there are some problems in actual use.

[0003] First, rigid connections are prone to damage. Since the sand screening machine will generate large vibrations and impacts during operation, this vibration will be transmitted to the vibration frame through the vibration motor. If the connection between the vibration motor and the vibration frame is too rigid, then under the action of long-term vibration, the connection part is prone to fatigue damage or even breakage. This will not only affect the normal operation of the sand screening machine, but also increase maintenance costs and downtime.

[0004] Secondly, the rigid connection will also have a certain impact on the performance of the sand screening machine. Since the rigid connection cannot effectively absorb and disperse the vibration energy, the vibration between the vibration motor and the vibration frame will be transmitted to each other, causing the vibration of the entire sand screening machine to intensify. This will not only damage the structure of the sand screening machine, but also affect the screening effect and reduce the screening efficiency and accuracy. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model provides a sand screening machine to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand screening machine, comprising a support frame, which is installed on an external device, and a connecting mechanism is arranged on the support frame, and the connecting mechanism comprises a vibration frame, a receiving mechanism, a motor, a positioning sleeve, a positioning rod, an intermediate spring, an insertion rod, a fixing sleeve, an external spring and a fixing mechanism, and the receiving mechanism is cooperatively connected to the support frame and the vibration frame, the motor is installed on the support frame, the positioning sleeve is installed on the vibration frame, the insertion rod is connected to the protruding end of the motor, the two ends of the intermediate spring are respectively connected to the insertion rod and the positioning rod, the positioning rod is slidably connected in the positioning sleeve, the two ends of the multiple external springs are respectively connected to the positioning sleeve and the fixing sleeve, and the fixing mechanism is installed on the fixing sleeve.

[0009] The present utility model is further configured such that the fixing mechanism includes a top rod. There are multiple top rods, and the multiple top rods are respectively slidably connected to the side wall of the fixing sleeve. A spiral groove is formed on the side wall of the insertion rod, and the multiple top rods abut against the spiral groove. The design of the fixing mechanism ensures the fixation between the insertion rod and the fixing sleeve.

[0010] The present utility model is further configured such that a limiting sleeve is threadedly provided on the fixing sleeve. An internal groove is formed in the limiting sleeve, and the multiple top rods abut against the internal groove. The design of the limiting sleeve ensures the limitation of the top rods.

[0011] The present utility model is further configured such that a plurality of anti-slip grooves are formed on the side wall of the limiting sleeve, and the plurality of anti-slip grooves are equidistantly arranged. The design of the anti-slip grooves ensures the convenient rotation of the limiting sleeve.

[0012] The present utility model is further configured such that the receiving mechanism includes a spring and a sieve plate. There are multiple springs, and the multiple springs are respectively connected to the vibrating frame and the support frame. The sieve plate is installed on the vibrating frame. The design of the receiving mechanism ensures the transmission of vibration.

[0013] The present utility model is further configured such that a plurality of vibrating belts are provided on the extending end of the motor, and the plurality of vibrating belts are respectively equidistantly arranged. The design of the vibrating belts ensures the occurrence of vibration.

[0014] The present utility model is further configured such that an intermediate plate is provided inside the vibrating frame, and the intermediate plate is installed at the lower end of the sieve plate. The design of the intermediate plate ensures the continuity of screening.

[0015] The present utility model is further configured such that a transmission belt is rotatably provided on the support frame, and a feed hopper is provided on the support frame.

[0016] (III) Advantageous Effects

[0017] Compared with the prior art, the present utility model provides a sand screening machine, which has the following advantageous effects:

[0018] 1. The design of the connecting mechanism enables a flexible connection between the vibration motor of the sand screening machine and the vibrating frame. Through the cooperation of the insertion rod and the fixing sleeve, and the setting of the limiting sleeve and the top rod, this connection method can ensure the transmission of vibration while reducing the damage risk caused by rigid connection. The threaded connection between the spiral groove of the insertion rod and the top rod, and the sliding limit connection between the positioning rod and the positioning sleeve ensure the stability of the connection.

[0019] 2. The fixing mechanism realizes the firm fixation between the insertion rod and the fixing sleeve through the cooperation of the ejector rod and the limit sleeve. The sliding connection of the ejector rod and the threaded design of the limit sleeve enable adjustment according to needs during the connection process, ensuring the accuracy and stability of the connection. The anti-slip groove design of the limit sleeve further enhances the stability of the fixing mechanism and prevents relative sliding during vibration.

[0020] 3. The receiving mechanism realizes the effective support for the vibrating frame through the cooperation of the spring and the sieve plate. The setting of the spring can play a role in connection during vibration, ensuring the screening efficiency and screening accuracy. The reasonable design of the receiving mechanism also enables the sand screening machine to adapt to sands of different particle sizes, improving the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of a sand screening machine in the present utility model;

[0022] Figure 2 is a schematic diagram of the structure of the connecting mechanism in the present utility model;

[0023] Figure 3 in the present utility model Figure 2 is a schematic cross-sectional structure diagram;

[0024] Figure 4 is a schematic diagram of the structure of the fixing sleeve in the present utility model;

[0025] Figure 5 is a schematic diagram of the structure of the limit sleeve in the present utility model.

[0026] In the figure: 1, support frame; 2, vibrating frame; 3, motor; 4, positioning sleeve; 5, positioning rod; 6, intermediate spring; 7, insertion rod; 8, fixing sleeve; 9, external spring; 10, ejector rod; 11, spiral groove; 12, limit sleeve; 13, internal groove; 14, anti-slip groove; 15, spring; 16, sieve plate; 17, vibrating belt; 18, intermediate plate; 19, transmission belt; 20, feed hopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0030] See also Figures 1-5 A sand screening machine comprises a support frame 1, which is mounted on an external device. A connecting mechanism is arranged on the support frame 1, and the connecting mechanism comprises a vibration frame 2, a receiving mechanism, a motor 3, a positioning sleeve 4, a positioning rod 5, an intermediate spring 6, an insertion rod 7, a fixing sleeve 8, an external spring 9 and a fixing mechanism. The receiving mechanism is cooperatively connected to the support frame 1 and the vibration frame 2, the motor 3 is mounted on the support frame 1, the positioning sleeve 4 is mounted on the vibration frame 2, the insertion rod 7 is connected to the protruding end of the motor 3, the two ends of the intermediate spring 6 are respectively connected to the insertion rod 7 and the positioning rod 5, the positioning rod 5 is slidably connected in the positioning sleeve 4, the two ends of a plurality of external springs 9 are respectively connected to the positioning sleeve 4 and the fixing sleeve 8, the fixing mechanism is mounted on the fixing sleeve 8, and the fixing mechanism comprises a push rod 10, a plurality of push rods 10 are provided, and the plurality of push rods 10 are respectively slidably connected to the fixing sleeve On the side wall of 8, a spiral groove 11 is provided on the side wall of the insertion rod 7, and multiple push rods 10 are in contact with the spiral groove 11. A limit sleeve 12 is threadedly provided on the fixed sleeve 8, and an internal groove 13 is provided in the limit sleeve 12. Multiple push rods 10 are in contact with the internal groove 13. A plurality of anti-slip grooves 14 are provided on the side wall of the limit sleeve 12, and the plurality of anti-slip grooves 14 are equidistantly arranged. The receiving mechanism includes a spring 15 and a sieve plate 16. A plurality of springs 15 are provided, and the plurality of springs 15 are respectively connected to the vibration frame 2 and the support frame 1. The sieve plate 16 is installed on the vibration frame 2. A plurality of vibration belts 17 are provided on the protruding end of the motor 3, and the plurality of vibration belts 17 are respectively equidistantly arranged. An intermediate plate 18 is provided in the vibration frame 2, and the intermediate plate 18 is installed at the lower end of the sieve plate 16. A transmission belt 19 is rotatably provided on the support frame 1, and a feed hopper 20 is provided on the support frame 1.

[0031] In this embodiment, when screening, first put the sand into the feed hopper 20, and then start the motor 3. Since a vibration belt 17 is installed on the protruding end of the motor 3, the vibration of the insertion rod 7 can be driven by the vibration belt 17. Due to the action of the intermediate spring 6 and the external spring 9, the vibration can be transmitted to the vibration frame 2, and then the vibration of the vibration frame 2 will be driven. Then the sieve is screened on the sieve plate 16, and the coarsest part flows out from the upper layer of the sieve plate 16, the sieve with medium diameter flows out from the intermediate plate 18, and the finest sieve is sent out from the conveyor belt, thereby completing the screening process.

[0032] More specifically, when it is necessary to connect the insertion rod 7 and the fixed sleeve 8, first insert the insertion rod 7 into the fixed sleeve 8. At this time, the internal groove 13 in the limit sleeve 12 does not abut against the ejector rod 10, and the positioning rod 5 is inserted into the positioning sleeve 4, thus completing the connection between the two. Then, by rotating the limit sleeve 12, multiple ejector rods 10 abut against the internal groove 13, thus completing the fixation of the ejector rod 10 and the spiral groove 11. Since the ejector rod 10 and the spiral groove 11 are in threaded connection and the positioning rod 5 and the positioning sleeve 4 are in sliding limit connection, the two are in a fixed state, so that flexible connection can be completed and vibration can be transmitted, and then the installation process is completed.

[0033] In summary, when the whole device is in use or operation: when screening, first put the sand into the feed hopper 20, and then start the motor 3. Since the vibration belt 17 is installed on the extending end of the motor 3, the vibration of the insertion rod 7 can be driven by the vibration belt 17. Due to the action of the intermediate spring 6 and the external spring 9, the vibration can be transmitted to the vibration frame 2, and then the vibration of the vibration frame 2 will be driven. Then the sieve is screened on the sieve plate 16. The coarsest part flows out from the upper layer of the sieve plate 16, the sieves with medium diameter flow out from the intermediate plate 18, and the finest sieves are sent out by the conveyor belt, thus completing the screening process.

[0034] When it is necessary to connect the insertion rod 7 and the fixed sleeve 8, first insert the insertion rod 7 into the fixed sleeve 8. At this time, the internal groove 13 in the limit sleeve 12 does not abut against the ejector rod 10, and the positioning rod 5 is inserted into the positioning sleeve 4, thus completing the connection between the two. Then, by rotating the limit sleeve 12, multiple ejector rods 10 abut against the internal groove 13, thus completing the fixation of the ejector rod 10 and the spiral groove 11. Since the ejector rod 10 and the spiral groove 11 are in threaded connection and the positioning rod 5 and the positioning sleeve 4 are in sliding limit connection, the two are in a fixed state, so that flexible connection can be completed and vibration can be transmitted, and then the installation process is completed.

[0035] In all the solutions mentioned above, for the connection between two components, welding, the cooperation of bolts and nuts, bolt or screw connection or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand screening machine, comprising a support frame (1), characterized in that: The support frame (1) is installed on an external device. The support frame (1) is provided with a connecting mechanism, which includes a vibration frame (2), a receiving mechanism, a motor (3), a positioning sleeve (4), a positioning rod (5), an intermediate spring (6), an insertion rod (7), a fixing sleeve (8), an external spring (9) and a fixing mechanism. The receiving mechanism is cooperatively connected to the support frame (1) and the vibration frame (2). The motor (3) is installed on the support frame (1), the positioning sleeve (4) is installed on the vibration frame (2), the protruding end of the motor (3) is connected to the insertion rod (7), the two ends of the intermediate spring (6) are respectively connected to the insertion rod (7) and the positioning rod (5), the positioning rod (5) is slidably connected in the positioning sleeve (4), the two ends of the plurality of external springs (9) are respectively connected to the positioning sleeve (4) and the fixing sleeve (8), and the fixing mechanism is installed on the fixing sleeve (8).

2. A sand screening machine according to claim 1, characterized in that: The fixing mechanism comprises a push rod (10), a plurality of push rods (10) are provided, and the plurality of push rods (10) are respectively slidably connected to the side wall of the fixing sleeve (8), a spiral groove (11) is provided on the side wall of the insertion rod (7), and the plurality of push rods (10) are abutted in the spiral groove (11).

3. A sand screening machine according to claim 2, characterized in that: A limiting sleeve (12) is threadedly provided on the fixing sleeve (8), an internal groove (13) is provided in the limiting sleeve (12), and a plurality of the push rods (10) are abutted in the internal groove (13).

4. A sand screening machine according to claim 3, characterized in that: A plurality of anti-slip grooves (14) are provided on the side wall of the limiting sleeve (12), and the plurality of anti-slip grooves (14) are arranged at equal distances.

5. A sand screening machine according to claim 4, characterized in that: The receiving mechanism comprises a spring (15) and a sieve plate (16), wherein a plurality of springs (15) are provided, and the plurality of springs (15) are respectively connected to a vibration frame (2) and a support frame (1), and the sieve plate (16) is installed on the vibration frame (2).

6. A sand screening machine according to claim 5, characterized in that: A plurality of vibration belts (17) are provided on the extended end of the motor (3), and the plurality of vibration belts (17) are arranged at equal intervals.

7. A sand screening machine according to claim 6, characterized in that: The vibration frame (2) is provided with an intermediate plate (18), and the intermediate plate (18) is installed at the lower end of the screen plate (16).

8. A sand screening machine according to claim 7, characterized in that: A transmission belt (19) is rotatably provided on the support frame (1), and a feed hopper (20) is provided on the support frame (1).

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