CN115646802A - Sieve husky device with adjustable inclination for building - Google Patents

Abstract

The invention provides a construction sand screening device with adjustable inclination angle, which includes a fixed base frame, a screen with a vibrating mechanism is arranged on the fixed base, and a dropping trough is provided on the lower side of the screen to screen the sand It is characterized in that the overall screen is inclined, the lower part of the tail is hingedly connected with the fixed chassis, the bottom of the high front end is connected with the fixed chassis through a lifting mechanism, and the screen is tilted as a whole by lifting the front end of the screen The adjustment of the angle is to adjust the overall inclination angle of the screen by lifting the front end of the screen, and the adjustment of the movement rate of the moving sand in the screen is realized through the size of the inclination angle, that is, the adjustment of the sieving rate, and will not cause operation. The increase in noise is more in line with the current green construction concept, has an environmental protection effect, and has a good development prospect.

Description

A sand screening device with adjustable inclination angle for construction

technical field

The invention relates to the field of building construction, in particular to a sand screening device with an adjustable inclination angle for building.

Background technique

In building construction, it is necessary to use mixed cement for masonry. In order to increase the firmness of masonry, people usually use fine sand of uniform size to mix with cement. In order to ensure the uniformity of fine sand, it is necessary to Screen the fine sand once to remove unqualified sand and impurities.

In the prior art, the screening of sand is usually achieved by the cooperation of the screen and the tremor mechanism. For example, a double-layer screening sand screener for construction engineering with the application number CN202220716635.1 is to drive the screen to vibrate through the tremor equipment. , to realize the screening of sand, but the screen of this kind of equipment is fixed, and the adjustment of the screening rate is realized by adjusting the power of the tremor equipment to control the tremor frequency. While increasing the screening rate, it will also bring about a significant increase in noise, which is not in line with the current construction site. environmental protection construction concept.

Therefore need a kind of novel sand screening device, in order to solve this situation.

Contents of the invention

The object of the present invention is to provide a construction sand screening device with an adjustable inclination angle.

To achieve the above object, the present invention provides the following technical solutions:

A construction sand screening device with an adjustable inclination angle, comprising a fixed base frame, a screen with a vibrating mechanism is arranged on the fixed base, and a drop chute is provided on the lower side of the screen to collect and export the sand after screening. It is characterized in that the overall screen is inclined, the lower end of the tail is hingedly connected to the fixed chassis, the bottom of the high front end is connected to the fixed chassis through a lifting mechanism, and the overall tilt angle of the screen is adjusted by lifting the front end of the screen.

As a further solution of the present invention: the screen includes a trough-shaped top net and an adjustable bottom net. The trough-shaped top net is an inverted trapezoidal structure, and the central part is provided with a mesh structure. There is a guide groove in the center, and an adjustable bottom net is slidingly installed in the guide groove. The surface of the adjustable bottom net is provided with the same mesh structure as the trough-shaped top net. One end is connected to the front end of the telescopic cylinder fixed on the back of the trough-shaped top net. The cylinder drives to slide along the direction of the guide groove.

As a further solution of the present invention: the vibrating motor is arranged at one end of the high position of the trough top net.

As a further solution of the present invention: the initial movement direction of the telescopic cylinder is to move towards the lower end of the grooved top net.

As a further solution of the present invention: the blanking trough includes a coarse sand blanking guide trough and a fine sand blanking guide trough, the coarse sand blanking guide trough is horizontally fixed on the fixed chassis at the tail end of the screen, and the tail end faces one side of the screen screen. The side slope is set, the fine sand blanking guide trough is fixed on the fixed chassis at the lower side of the screen, and is inclined in the same direction as the screen, and the tail end is inclined downward to the side opposite to the coarse sand blanking guide trough.

As a further solution of the present invention: the lifting mechanism includes a telescopic rod, a connecting shaft and a connecting cylinder, the telescopic rod is hinged on the fixed chassis, the top end is fixedly connected with an L-shaped connecting shaft, and the connecting shaft penetrates into the fixed connecting cylinders on both sides of the screen Inside, the connecting cylinder is embedded with an air-expanding sleeve for the rotational connection of the connecting shaft. The air-expanding sleeve is a double-layer hollow cylinder structure, with a valve core on one side, and the valve core is probed from the corresponding through-hole structure on the surface of the connecting cylinder. out to inflate and deflate the inflatable sleeve.

As a further solution of the present invention: the telescopic rod is a hydraulic telescopic rod.

As a further solution of the present invention: the outer side of the part where the connecting shaft is connected to the inflatable sleeve is fitted with an axially elongated ball bearing, the length of which corresponds to the length of the inflatable sleeve.

As a further solution of the present invention: the inflatable sleeve is composed of a main load-bearing air chamber and an auxiliary shock-absorbing air chamber, the main load-bearing air chamber is a small fan-shaped airtight air chamber distributed at the bottom of the inflatable sleeve, and the auxiliary shock-absorbing air chamber is The large-volume fan-shaped air cavity complementary to the main load-bearing air cavity forms the hollow cylinder structure of the inflatable sleeve together with the main load-bearing air cavity.

As a further solution of the present invention: the radial structural wall thickness of the air expansion sleeve is thin, and the axial structural wall thickness is set thick.

Beneficial effect

1. The lower part of the tail end of the screen of the present invention is hingedly connected with the bottom frame, and the bottom of the high front end is connected with the fixed bottom frame through a lifting mechanism. The adjustment of the movement speed of the moving sand in the screen, that is, the adjustment of the sieving speed, will not increase the operating noise, which is more in line with the current green construction concept and has an environmental protection effect.

2. The connecting cylinder of the lifting mechanism of the present invention is connected with the telescopic rod through the embedded inflatable sleeve. The inflatable sleeve is a double-layer hollow cylinder structure, and a valve core is arranged on one side, and the valve core is connected through the surface of the connecting cylinder. The hole structure is protruded to inflate and deflate the inflatable sleeve. The telescopic rod is flexibly connected to the screen through the inflatable sleeve, which can play a shock-absorbing effect and reduce the transmission of vibration to the telescopic rod and the fixed chassis. Long telescoping rod life, also reduces resonance and reduces noise.

3. The inflatable sleeve of the present invention is composed of a main load-bearing air chamber and an auxiliary shock-absorbing air chamber. The main load-bearing air chamber is a small fan-shaped airtight air chamber distributed at the bottom of the inflatable sleeve. The large-volume fan-shaped air cavity complementary to the air cavity forms the hollow cylinder structure of the air-inflatable sleeve together with the main load-bearing air cavity. Provide stronger supporting force, avoid the loss of shock absorption effect of the air expansion sleeve when it is close to the deformation limit due to the weight of the screen, and ensure the shock absorption effect of the air expansion sleeve.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the screen mesh structure of the present invention.

Fig. 3 is a cross-sectional view of the partial structure of the screen of the present invention.

Fig. 4 is a structural schematic diagram of the lifting mechanism of the present invention.

Fig. 5 is a cross-sectional view of the connecting cylinder structure of the present invention.

Fig. 6 is a sectional view of the axial structure of the air expansion sleeve of the present invention.

Fig. 7 is a cross-sectional view of the radial structure of the air expansion sleeve of the present invention.

In Figure 1-7: 1-fixed bottom frame, 2-screen, 21-groove top net, 22-guide groove, 23-adjusting bottom net, 24-telescopic cylinder, 25-vibration motor, 3-lifting mechanism, 31-Telescopic rod, 32-Connecting shaft, 33-Ball bearing, 34-Connecting cylinder, 35-Inflatable sleeve, 351-Main load-bearing air chamber, 352-Auxiliary shock absorbing air chamber, 36-Valve core, 4-Drop Feed chute, 401-coarse sand blanking channel, 402-fine sand blanking channel.

Detailed ways

The specific technical solution of the present invention will be clearly and completely described below in conjunction with Fig. 1-Fig. 7 in the accompanying drawings of the present specification;

Please refer to Figures 1-7, Figure 1 is a schematic diagram of the overall structure of the embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the screen of the present invention; Figure 3 is a sectional view of the partial structure of the screen of the present invention; Schematic diagram of the mechanism structure; Figure 5 is a cross-sectional view of the connecting cylinder structure of the present invention; Figure 6 is a cross-sectional view of the axial structure of the air-inflating sleeve of the present invention; Figure 7 is a cross-sectional view of the radial structure of the air-inflating sleeve of the present invention.

A construction sand screening device with an adjustable inclination angle provided in this embodiment includes a fixed base frame 1 on which a screen 2 with a vibrating mechanism is arranged, and a blanking material is provided on the lower side of the screen 2. The sand is collected and exported after the trough 4 is screened. It is characterized in that the sieve 2 is arranged obliquely as a whole, the lower part of the tail end is hingedly connected with the fixed chassis 1, and the bottom of the high front end is connected with the fixed chassis 1 through the lifting mechanism 3. Adjust the overall inclination angle of the screen 2 by lifting the front end of the screen 2.

Among them, the screen 2 includes a grooved top net 21 and an adjustable bottom net 23. The grooved top net 21 is an inverted trapezoidal structure, the central part is provided with a mesh structure, and a vibration motor 25 is fixed on one side of the bottom surface. There is a guide groove 22 in the center of the bottom, and an adjustable bottom net 23 is slidingly arranged in the guide groove 22. The surface of the adjustable bottom net 23 is provided with the same mesh structure as the grooved top net 21, and one end is fixed to the back of the grooved top net 21. The front end of the cylinder 24 is connected, driven by the telescopic cylinder 24 to slide along the direction of the guide groove 22;

By controlling the expansion and contraction of the telescopic cylinder 24, the adjustment bottom net 23 of the screen cloth 2 can be driven to move relative to the groove top net 21 along the direction of the guide groove 22, so that the mesh positions of the adjustment bottom net 23 and the groove top net 21 are staggered, changing The mesh size of the overlapping part realizes the adjustment of the size of the sieved sand.

Concretely, the vibrating motor 25 is arranged at one end of the high position of the trough top net 21, that is, close to the end where the sand grains come from, so that the vibrating screen effect of the vibrating motor 25 can be better applied to the unscreened sand grains, and the screening process can be improved. efficiency.

Specifically, the initial movement direction of the telescopic cylinder 24 is to move toward the lower end of the grooved top net 21;

That is, the initial movement direction of the adjusting bottom net 23 is to move toward the lower end of the grooved top net 21, so that the ladder structure and the bonding gap formed by the grooved top net 21 and the adjusting bottom net 23 are close to the high position of the screen 2 in the mesh structure. One end, in conjunction with the bevel angle of the screen 2, can effectively prevent sand particles from staying in the ladder structure formed by the trough-shaped top net 21 and the regulating bottom net 23 or entering the gap between the trough-shaped top net 21 and the regulating bottom net 23.

Wherein, the blanking trough 4 includes a coarse sand blanking guide 41 and a fine sand blanking guide 42, the coarse sand blanking guide 41 is horizontally fixed on the fixed chassis 1 at the tail end of the screen 2, and the tail end faces the screen 2 One side of the screen is inclined, and the fine sand blanking guide 42 is fixed on the fixed chassis 1 on the lower side of the screen 2, and is inclined in the same direction as the screen 2, and the tail end is inclined downward to meet the coarse sand blanking guide. On the opposite side of 41, the coarse and fine sand particles after screening are diverted and collected by setting the coarse sand blanking guide groove 41 and the fine sand blanking guide groove 42.

Among them, the lifting mechanism 3 includes a telescopic rod 31, a connecting shaft 32 and a connecting cylinder 34, the telescopic rod 31 is hinged on the fixed chassis 1, and the top end is fixedly connected with an L-shaped connecting shaft 32, and the connecting shaft 32 penetrates into both sides of the screen 2 In the fixed connecting cylinder 34, the connecting cylinder 34 is embedded with an inflatable sleeve 35 for the rotational connection of the connecting shaft 32. The inflatable sleeve 35 is a double-layer hollow cylinder structure, and one side is provided with a valve core 36, and the valve core 36 protrudes from the corresponding through-hole structure on the surface of the connecting cylinder 34 to inflate and deflate the inflatable sleeve 35;

Through the control of the telescopic rod 31, one side of the screen 2 can be driven up or down, and then the overall inclination angle of the screen 2 can be adjusted, and the movement rate of the moving sand in the screen 2 can be realized by the size of the inclination Adjustment, that is, the adjustment of the sieving rate, and will not increase the operating noise. At the same time, the telescopic rod 31 realizes the flexible connection with the screen 2 through the air-expanding sleeve 35, which can play a shock-absorbing effect and reduce vibration. Conducted to the telescopic rod 31 and the fixed chassis 1, along the life of the telescopic rod 31, also reduces resonance and noise.

Specifically, the telescopic rod 31 is a hydraulic telescopic rod. Compared with rigid contact telescopic rods such as threaded rods, the hydraulic telescopic rod has better shock resistance and can prolong the service life of the telescopic rod 31 .

Specifically, the outer side of the connecting shaft 32 and the inflatable sleeve 35 is fitted with an axially lengthened ball bearing 33 whose length corresponds to the length of the inflatable sleeve 35;

Through the setting of the ball bearing 33 , the effect of eliminating the angular displacement is achieved, and the relative rotation of the connecting shaft 32 and the inflatable sleeve 35 in the circumferential direction is eliminated, so as to avoid conflicts with the expansion and contraction of the telescopic rod 31 .

Specifically, the inflatable sleeve 35 is composed of a main load-bearing air chamber 351 and an auxiliary shock-absorbing air chamber 352. The main load-bearing air chamber 351 is a small fan-shaped airtight air chamber distributed at the bottom of the inflatable sleeve 35, and the auxiliary shock-absorbing air chamber 352 is a large-volume fan-shaped air chamber complementary to the main load-bearing air chamber 351, and together with the main load-bearing air chamber 351 constitutes the hollow cylinder structure of the inflatable sleeve 35;

By means of the airtight and small-volume main load-bearing air cavity 351 at the bottom, stronger supporting force can be provided for the inflatable sleeve 35 in the vertical direction, so as to prevent the inflatable sleeve 35 from being close to the deformation limit due to bearing the weight of the screen 5. The damping effect is lost, and the effect of ensuring the damping effect of the inflatable sleeve 35 is played.

Specifically, the radial structural wall thickness of the air-inflatable sleeve 35 is thin, which is convenient for the relative displacement of the two-layer air-inflatable sleeve 35 structure in which the inner and outer layers are in contact with the connecting shaft 32 and the connecting cylinder 34, so as to realize the shock absorption effect, while the axial structure The thickness of the wall is set thick to achieve a more stable and close contact effect with the connecting shaft 32 and the connecting cylinder 34 to ensure the stability of the connection.

When implementing the technical solution recorded in this embodiment:

By controlling the expansion and contraction of the telescopic cylinder 24, the adjustment bottom net 23 of the screen cloth 2 can be driven to move relative to the groove top net 21 along the direction of the guide groove 22, so that the mesh positions of the adjustment bottom net 23 and the groove top net 21 are staggered, changing The mesh size of the overlapping part realizes the adjustment of the size of the sieved sand;

And through the control of the telescopic rod 31, one side of the screen cloth 2 can be driven to lift or fall, and then the overall inclination angle of the screen cloth 2 is adjusted, and the movement of the moving sand grains in the screen cloth 2 can be realized by the size of the inclination angle. The adjustment of the speed, that is, the adjustment of the sieving speed, will not increase the operating noise, which is more in line with the current green construction concept and has an environmental protection effect.

Claims (10)

1. A sand screening device with an adjustable inclination angle for construction, characterized in that it comprises: The fixed chassis (1) is used for the installation and fixing of the overall structure; The sieve (2), the sieve (2) with a vibrating mechanism is arranged on the fixed chassis (1), and the sieve (2) is set inclined as a whole, and is used for sieving coarse and fine sand. The lower side is provided with a blanking trough (4) to collect and export the sand after screening; Lifting mechanism (3), the lower end of the screen (2) is hingedly connected to the fixed chassis (1), the bottom of the high front end is connected to the fixed chassis (1) through the lifting mechanism (3), and the screen is lifted ( 2) Adjust the overall inclination angle of the screen (2) at the front end, and use the adjustment of the inclination angle to adjust the movement rate of sand grains. 2. A construction sand screening device with an adjustable inclination angle according to claim 1, characterized in that: the screen (2) comprises: Groove-type top net (21), the groove-type top net (21) has an inverted trapezoidal structure, the central part is provided with a mesh structure, and a vibration motor (25) is fixed on one side of the bottom surface, and the groove-type top net is driven by the vibration motor (25) (21) Vibration for sand screening; Adjust the bottom net (23), the center of the bottom of the trough top net (21) is provided with a guide groove (22), the guide groove (22) is slidingly provided with an adjustment bottom net (23), and the surface of the adjustment bottom net (23) is opened It has the same mesh structure as the trough-type top net (21), and one end is connected to the front end of the telescopic cylinder (24) fixed on the back of the trough-type top net (21), and is driven by the telescopic cylinder (24) along the direction of the guide groove (22). Slide to change the overlapping area of the upper and lower meshes to adjust the mesh aperture. 3. The sand screening device with adjustable inclination angle for construction according to claim 2, characterized in that: the vibrating motor (25) is arranged at the high end of the trough top net (21). 4. The sand screening device with adjustable inclination angle for construction according to claim 2, characterized in that: the initial movement direction of the telescopic cylinder (24) is to move towards the lower end of the trough-shaped top net (21) . 5. A construction sand screening device with an adjustable inclination angle according to claim 1, characterized in that: the blanking chute (4) comprises: Coarse sand blanking guide trough (41), the coarse sand blanking guide trough (41) is horizontally fixed on the fixed chassis (1) at the end of the screen (2), and the tail is inclined to one side of the screen (2) , for the collection and export of coarse sand; The fine sand falling guide trough (42), the fine sand falling guide trough (42) is fixed on the fixed chassis (1) on the lower side of the screen (2), inclined in the same direction as the screen (2), and the tail end Then it is inclined downward to the side opposite to the coarse sand blanking guide groove (41), which is used for the collection and derivation of fine sand grains. 6. The sand screening device with adjustable inclination angle for construction according to claim 1, characterized in that: the lifting mechanism (3) includes a telescopic rod (31), a connecting shaft (32) and a connecting cylinder (34 ), the telescopic rod (31) is hinged on the fixed chassis (1), the top end is fixedly connected with an L-shaped connecting shaft (32), and the connecting shaft (32) penetrates into the fixed connecting cylinder (34) on both sides of the screen (2) ), the connecting cylinder (34) is embedded with an air-expanding sleeve (35) for the rotational connection of the connecting shaft (32). (36), the valve core (36) protrudes from the corresponding through-hole structure on the surface of the connecting cylinder (34) to inflate and deflate the inflatable sleeve (35). 7. The construction sand screening device with adjustable inclination angle according to claim 6, characterized in that: the telescopic rod (31) is a hydraulic telescopic rod (31). 8. The sand screening device with adjustable inclination angle for construction according to claim 6, characterized in that an axial The lengthened ball bearing (33) has a length corresponding to the length of the air expansion sleeve (35). 9. The sand screening device with adjustable inclination angle for construction according to claim 6, characterized in that: the inflatable sleeve (35) is composed of a main load-bearing air chamber (351) and a secondary shock-absorbing air chamber ( 352), the main load-bearing air (351) is a small-volume fan-shaped airtight air cavity distributed at the bottom of the inflatable sleeve (35), and the auxiliary shock-absorbing air cavity (352) is a large-volume complementary to the main load-bearing air cavity (351). The fan-shaped air cavity forms the hollow cylinder structure of the inflatable sleeve (35) together with the main load-bearing air cavity (351). 10. The construction sand screening device with adjustable inclination angle according to claim 6, characterized in that: the radial structural wall thickness of the air expansion sleeve (35) is thin, and the axial structural wall thickness is set thick .

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