Energy-saving de-powdering and sand-making equipment

Abstract

The present invention relates to the technical field of sand making equipment, and specifically to an energy-saving de-powdering sand making equipment, comprising a shell and a rolling unit arranged in the shell; a dust suction unit is arranged on the outer shell of the rolling unit, and the dust suction unit forms a dust suction chamber outside the rolling unit, and the dust suction chamber is an annular structure, and an annular blade is arranged on the upper part of the dust suction chamber. When the rolling unit rolls sand and gravel, the annular blade rotates synchronously with the rolling unit, and the annular blade forms an airflow from top to bottom in the dust suction chamber. A sprayer is also arranged on the side wall of the dust suction chamber, and the sprayer sprays water mist into the dust suction chamber. The present invention avoids the disadvantage of using a filter to filter dust, and the filter needs to be replaced after a period of use, and ensures the continuity and stability of de-powdering. At the same time, the dust can be recycled after being removed by water mist, so as to achieve energy saving.

Description

Technical Field

[0001] The invention relates to the technical field of sand making equipment, and in particular to energy-saving de-powdering sand making equipment. Background Art

[0002] When the prior art is in use, the discharge port on the commonly used sand making equipment is to discharge sand, gravel, crushed powder and debris collectively. At this time, the sand and gravel powder is mixed with the sand and gravel, and further separation is required manually, resulting in a waste of labor; in addition, due to the large amount of sand made, the discharge speed is fast, and the airflow has a great impact, so a large amount of sand and gravel powder and dust will be generated at the discharge port, which will cause health damage to the staff and cause dust pollution to the working environment.

[0003] Chinese patent CN221246016U discloses a powder removal device for machine-made sand, comprising a feed bin, a lower bin, and an exhaust device, wherein the lower port of the feed bin is fixedly connected to the upper port of the lower bin, the exhaust device is fixedly arranged at the upper front side of the lower bin, and screening vibration mechanisms are rotatably arranged on both sides of the inner cavity of the bin body of the feed bin, and the screening vibration amplitude of the screening vibration mechanism is between 0° and 15°. A first grid is slidably arranged on the lower bin wall of the feed bin in the front-to-back direction, and a second grid is slidably arranged in the left-to-right direction. A stirring device is installed between the inner cavity and the rear side of the lower bin, an observation door is slidably arranged on the front side of the lower bin, a first group of step springboards and a second group of step springboards are fixedly arranged on the inner cavity wall of the lower bin, and a discharge port is provided at the lower part of the lower bin.

[0004] Although the above scheme can complete the de-powdering, the dust needs to be discharged through the fan, and when the fan sucks out the dust, a mesh grid needs to be set at the input end of the fan to filter the dust. The above de-powdering process is mainly to directly suck the sand and gravel fragments through the fan. Even if a cleaning device in the prior art is set on the mesh grid, it is impossible to avoid the dust clogging the mesh grid. At the same time, the above scheme cannot reasonably collect and process the separated dust. After a period of use, the dust will still be discharged together with the sand and gravel. Summary of the invention

[0005] In view of the above problems, an energy-saving de-powdering and sand-making equipment is provided to solve the above shortcomings.

[0006] In order to solve the problems of the prior art, the present invention provides an energy-saving de-powdering and sand-making equipment, comprising a shell and a rolling unit arranged in the shell; a dust suction unit is provided on the outer shell of the rolling unit, and the dust suction unit forms a dust suction chamber on the outer side of the rolling unit, and the dust suction chamber is an annular structure, and annular blades are provided on the upper part of the dust suction chamber. When the rolling unit rolls sand and gravel, the annular blades rotate synchronously with the rolling unit, and the annular blades form an airflow from top to bottom in the dust suction chamber, and a sprayer is also provided on the side wall of the dust suction chamber, and the sprayer sprays water mist into the dust suction chamber.

[0007] Preferably, an auxiliary unit is provided below the sprayer, and the auxiliary unit comprises an air pump, and the air pump is used to extract the air in the dust suction chamber.

[0008] Preferably, the auxiliary unit also includes a first pipeline and a second pipeline, the first pipeline is horizontally arranged on one side of the dust suction chamber and connected to the dust suction chamber, the second pipeline is vertically arranged at the end of the first pipeline, the second pipeline and the first pipeline are connected to each other, and the air pump is arranged on the upper part of the second pipeline.

[0009] Preferably, filter cotton is arranged at the connection point between the first pipeline and the dust suction chamber.

[0010] Preferably, a scraper that can rotate synchronously with the annular blade is provided at the bottom of the dust suction chamber, the scraper is in contact with the bottom of the dust suction chamber and can completely sweep the bottom of the dust suction chamber when rotating with the annular blade, a discharge port is opened at the bottom of the dust suction chamber, an extension pipe is vertically arranged at the lower part of the discharge port, a switch valve is arranged on the extension pipe, when the switch valve is closed, the bottom of the extension pipe is closed and a material storage groove is formed, and the scraper can push the sediment settled at the bottom of the dust suction chamber into the material storage groove when rotating at the bottom of the dust suction chamber.

[0011] Preferably, two water level sensors are vertically arranged below the filter cotton. The water level sensor on the upper side is used to monitor the highest water level at the bottom of the dust suction chamber, and the water level sensor on the lower side is used to monitor the lowest water level at the bottom of the dust suction chamber. When the water level sensor on the upper side monitors the water level, the switch valve opens, and when the water level sensor on the lower side cannot monitor the water level, the switch valve closes.

[0012] Preferably, the rolling unit includes a rolling chamber arranged on the upper part of the shell and connected to the dust suction chamber, a pressure platform and a rolling roller are arranged in the rolling chamber, the pressure platform is a rotating body structure, the pressure platform is arranged on the upper part of the shell and a discharge chamber is present between the pressure platform and the shell, a plurality of rolling rollers rotating around the axis of the pressure platform are arranged on the upper part of the pressure platform, the rolling rollers roll the sand and gravel on the pressure platform, the rolled sand and gravel are discharged through the discharge chamber, and the dust is sucked into the dust suction chamber.

[0013] Preferably, a guide plate is provided between the rolling rollers and rotates synchronously with the rolling rollers around the axis of the pressure platform. The bottom of the guide plate contacts the upper end surface of the pressure platform. The extension direction of the guide plate forms an acute angle with the radial direction of the pressure platform. The guide plates are arranged from the inside to the outside along the radial direction of the pressure platform, and adjacent guide plates are arranged alternately.

[0014] Preferably, a driving unit for driving the rolling roller to rotate around the axis of the pressure platform is arranged on the upper part of the rolling roller.

[0015] Preferably, a feeding unit is arranged on the upper part of the rolling unit, and a second feeding port is vertically arranged in the middle position of the rolling unit. The feeding unit includes a feeding disk rotatably arranged on the upper part of the rolling unit, and a plurality of transport grooves are vertically opened on the feeding disk. The transport grooves are arranged around the axis of the feeding disk. A sleeve is arranged on the outer periphery of the feeding disk, and a first feeding port is opened on the upper part of the sleeve. The same transport groove in rotation can only coincide with one of the first feeding port or the second feeding port at the same time.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention removes sand and gravel by setting a dust suction unit, and an air pump is also set in the dust suction unit. The air pump can draw air and dust in the rolling unit into the dust suction chamber. The annular blades set on the upper part of the dust suction chamber rotate synchronously with the rolling unit when the rolling unit rotates. The annular blades and the air pump are used to control the flow direction of the air in the dust suction chamber at the same time. When the dust in the rolling unit enters the dust suction chamber below the annular blades, the sprayer set on the side wall of the dust suction chamber sprays water mist. As the air in the dust suction chamber flows from top to bottom, the water mist sprayed by the sprayer has a certain initial speed, that is, the spray The water mist sprayed by the fogger will not flow from bottom to top immediately after being sprayed, but will move in the dust suction chamber in a parabolic shape. In this way, the dust will be mixed with the water mist when passing through one side of the sprayer. The dust mixed with the water mist will no longer be able to float around at will, and the annular blades arranged on the top of the dust suction chamber can control the direction of the airflow, that is, the function of the annular blades is to correct the direction of the airflow at the top of the dust suction chamber, so that the airflow in the dust suction chamber will not flow back into the rolling chamber, avoiding the use of a filter to filter the dust, and the need to replace the filter after a period of use, thereby ensuring the continuity and stability of powder removal.

[0018] 2. The water discharged from the second pipeline in the present invention can be reused by the sprayer, thereby achieving energy saving, improving the utilization rate of water resources, and the sediment at the bottom of the dust collection chamber can be automatically discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of energy-saving de-powdering and sand making equipment.

[0020] Figure 2 It is a side view of an energy-saving de-powdering sand making equipment.

[0021] Figure 3 It is an energy-saving de-powdering and sand making equipment Figure 2 Schematic cross-sectional view at AA in the middle.

[0022] Figure 4 It is a cutaway stereoscopic schematic diagram of an energy-saving de-powdering and sand-making equipment.

[0023] Figure 5It is an energy-saving de-powdering and sand making equipment Figure 4 A magnified schematic diagram of point B in the middle.

[0024] Figure 6 It is an energy-saving de-powdering and sand making equipment Figure 4 Enlarged schematic diagram of point C in the middle.

[0025] Figure 7 It is an energy-saving de-powdering and sand making equipment Figure 4 Enlarged schematic diagram of point D in the middle.

[0026] Figure 8 It is an energy-saving de-powdering and sand making equipment Figure 4 Enlarged schematic diagram of point E in the middle.

[0027] Fig. 9 It is a three-dimensional schematic diagram of an energy-saving de-powdering and sand-making equipment with the outer shell of the dust suction chamber removed.

[0028] Fig.10 The invention discloses a cutaway stereoscopic schematic diagram of an energy-saving de-powdering and sand-making equipment with the outer shell of the dust suction chamber removed.

[0029] Fig.11 The invention discloses a three-dimensional schematic diagram of an energy-saving de-powdering and sand-making equipment with the outer shell of the casing and the dust suction chamber removed.

[0030] The numbers in the figure are:

[0031] 1. Shell; 11. Discharge port; 2. Rolling unit; 21. Pressure platform; 22. Rolling roller; 23. Rolling chamber; 24. Guide plate; 25. Material distributor; 26. Drive unit; 261. First rotary driver; 262. Gear; 263. Gear ring; 264. Rotating ring; 265. Feed pipe; 3. Dust suction unit; 31. Dust suction chamber; 32. Sprayer; 33. Annular blade; 34. Scraper; 35. Extension pipe; 36. Switch valve; 37. Connecting frame; 38. Water level sensor; 4. Auxiliary unit; 41. Air pump; 42. First pipeline; 43. Second pipeline; 44. Filter cotton; 5. Feed unit; 51. Feed tray; 511. Transport trough; 52. Shell; 521. First feed port; 53. Second feed port; 54. Feed shell; 55. Second rotary driver. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figure 1-Figure 3: An energy-saving de-powdering and sand-making equipment, comprising a shell 1 and a rolling unit 2 arranged in the shell 1; a dust suction unit 3 is arranged on the outer shell of the rolling unit 2, and the dust suction unit 3 forms a dust suction chamber 31 on the outer side of the rolling unit 2. The dust suction chamber 31 is an annular structure, and an annular blade 33 is arranged on the upper part of the dust suction chamber 31. When the rolling unit 2 rolls sand and gravel, the annular blade 33 rotates synchronously with the rolling unit 2, and the annular blade 33 forms an airflow from top to bottom in the dust suction chamber 31. A sprayer 32 is also arranged on the side wall of the dust suction chamber 31, and the sprayer 32 sprays water mist into the dust suction chamber 31.

[0034] A discharge port 11 is provided at the center of the shell 1, and the sand and gravel rolled by the rolling unit 2 are discharged from the discharge port 11. The working principle of the dust suction unit 3 is as follows: an air pump 41 is also provided in the dust suction unit 3, and the air pump 41 can draw the air and dust in the rolling unit 2 into the dust suction chamber 31. The annular blades 33 arranged on the upper part of the dust suction chamber 31 rotate synchronously with the rolling unit 2 when the rolling unit 2 rotates. The annular blades 33 and the air pump 41 are used to control the flow direction of the air in the dust suction chamber 31 at the same time. When the dust in the rolling unit 2 enters the dust suction chamber 31 below the annular blades 33, the sprayer 32 arranged on the side wall of the dust suction chamber 31 sprays water mist, and the air in the dust suction chamber 31 flows from top to bottom. However, the water mist sprayed by the sprayer 32 has a certain initial velocity, that is, the water mist sprayed by the sprayer 32 will not flow from bottom to top immediately after being sprayed, but will move in the dust suction chamber 31 in a parabolic shape, so that when the dust passes through one side of the sprayer 32, it can be mixed with the water mist, and the dust mixed with the water mist cannot float at will, and the annular blades 33 arranged on the top of the dust suction chamber 31 can control the direction of the airflow, that is, the function of the annular blades 33 is to correct the airflow direction at the top of the dust suction chamber 31, so that the airflow in the dust suction chamber 31 will not flow back into the rolling chamber 23, avoiding the use of a filter to filter the dust, and the disadvantage of needing to replace the filter after a period of use, thereby ensuring the continuity and stability of powder removal.

[0035] Reference Figure 1 and Figure 2 An auxiliary unit 4 is provided below the sprayer 32 . The auxiliary unit 4 includes an air pump 41 . The air pump 41 is used to extract the air in the dust suction chamber 31 .

[0036] After the rolling unit 2 is started, the dust suction unit 3 is started synchronously with the rolling unit 2. The dust suction unit 3 sucks the dust in the rolling unit 2 into the dust suction chamber 31. Since the upper part of the dust suction chamber 31 is provided with an annular blade 33, the air in the dust suction chamber 31 can flow from top to bottom when the annular blade 33 rotates. However, the rotation speed of the annular blade 33 is not very fast. Although the annular blade 33 can absorb a part of the dust from the rolling unit 2 when it rotates, the function of the annular blade 33 is mainly to control the dust entering the dust suction chamber 31 from flowing back to the rolling unit 2, and at the same time, it can also isolate the water mist floating in the dust suction chamber 31. To prevent water mist from rising and entering the crushing unit 2, the auxiliary unit 4 can suck the dust in the crushing unit 2 into the dust suction chamber 31. This is because an air pump 41 is provided in the crushing unit 2. The air pump 41 can extract the gas in the dust suction chamber 31, so that the dust and air in the crushing unit 2 can enter the dust suction chamber 31. It is worth noting that since the number of air pumps 41 distributed around the dust suction chamber 31 is limited, if the annular blades 33 for controlling the flow direction are not provided in the upper part of the dust suction chamber 31, it is easy to cause the airflow to change its flow direction at the upper part of the dust suction chamber 31 at will, and thus the dust in the crushing unit 2 cannot be well guided into the dust suction chamber 31.

[0037] Reference Figure 1 and Figure 4 : The auxiliary unit 4 also includes a first pipeline 42 and a second pipeline 43. The first pipeline 42 is horizontally arranged on one side of the dust suction chamber 31 and is connected to the dust suction chamber 31. The second pipeline 43 is vertically arranged at the end of the first pipeline 42. The second pipeline 43 and the first pipeline 42 are connected to each other, and the air pump 41 is arranged on the upper part of the second pipeline 43.

[0038] Reference Figure 1 , Figure 2 and Figure 4 : A filter cotton 44 is arranged at the connection point between the first pipeline 42 and the dust suction chamber 31.

[0039] After the air pump 41 is started, the first pipeline 42 draws air from the dust suction chamber 31. It is worth noting that a filter cotton 44 is provided at the connection between the first pipeline 42 and the dust suction chamber 31. The filter cotton 44 can filter the dust. Since the sprayer 32 is provided on the side wall of the dust suction chamber 31, when the dust suction unit 3 is started, the sprayer 32 is always in operation. After the water mist sprayed by the sprayer 32 combines with the dust, the water mist mixed with the dust falls on the filter cotton 44 under the drive of the air flow from top to bottom. The filter cotton 44 can absorb the water mist and filter the dust mixed in the water mist. Only air and water flow enter the first pipeline 42 through the filter cotton 44. This is because the water mist sprayed by the sprayer 32 is no longer in a water mist state after being adsorbed on the filter cotton 44. When the ability of the filter cotton 44 to adsorb water reaches its maximum, what the air pump 41 draws into the first pipeline 42 is water flow. Since the air pump 41 is arranged on the upper part of the second pipeline 43, and the second pipeline 43 is arranged vertically, the water flow in the first pipeline 42 can be discharged through the lower part of the second pipeline 43, and the air entering the first pipeline 42 can be discharged from the air pump 41. One side of the sprayer 32 is connected to a water tank for supplying water to it, and the water discharged from the second pipeline 43 flows into the water tank for recycling, thereby improving the utilization rate of water resources.

[0040] Reference Figure 4 , Figure 7 and Fig. 9 A scraper 34 capable of rotating synchronously with the annular blade 33 is arranged at the bottom of the dust suction chamber 31. The scraper 34 contacts the bottom of the dust suction chamber 31 and can completely sweep the bottom of the dust suction chamber 31 when rotating with the annular blade 33. A discharge port is opened at the bottom of the dust suction chamber 31, and an extension pipe 35 is vertically arranged at the lower part of the discharge port. A switch valve 36 is arranged on the extension pipe 35. When the switch valve 36 is closed, the bottom of the extension pipe 35 is closed to form a material storage groove. When the scraper 34 rotates at the bottom of the dust suction chamber 31, it can push the sediment deposited at the bottom of the dust suction chamber 31 into the material storage groove.

[0041] After the switch valve 36 is opened, the sediment retained in the storage tank can be discharged from the switch valve 36. A connecting frame 37 is fixedly arranged between the scraper 34 and the annular blade 33. When the annular blade 33 rotates, the scraper 34 is driven to rotate synchronously through the connecting frame 37. Since the rotation speed of the annular blade 33 is not high, the slower rotation speed of the scraper 34 can ensure that the sediment at the bottom of the dust suction chamber 31 will not be agitated. When the switch valve 36 is opened, the sediment accumulated in the storage tank can be discharged smoothly, and the water at the bottom of the dust suction chamber 31 will press out the sediment in the storage tank and clean the inner wall of the extension tube 35.

[0042] Reference Figure 8: Two water level sensors 38 are vertically arranged below the filter cotton 44. The water level sensor 38 on the upper side is used to monitor the highest water level at the bottom of the dust suction chamber 31, and the water level sensor 38 on the lower side is used to monitor the lowest water level at the bottom of the dust suction chamber 31. When the water level sensor 38 on the upper side monitors the water level, the switch valve 36 opens. When the water level sensor 38 on the lower side cannot monitor the water level, the switch valve 36 closes.

[0043] In this way, the bottom of the dust suction chamber 31 is always in a liquid-sealed state, that is, there is always water at the bottom of the dust suction chamber 31 to block the discharge port, ensuring that the outside air is not easy to enter the dust suction chamber 31 from the discharge port, thereby ensuring that the flow direction of the air in the dust suction chamber 31 will not change.

[0044] Reference Figure 3 and Figure 4 The rolling unit 2 includes a rolling chamber 23 which is arranged on the upper part of the shell 1 and is interconnected with the dust suction chamber 31. A pressure platform 21 and a rolling roller 22 are arranged in the rolling chamber 23. The pressure platform 21 is a rotating body structure. The pressure platform 21 is arranged on the upper part of the shell 1 and a discharge chamber is present between the pressure platform 21 and the shell 1. A plurality of rolling rollers 22 rotating around the axis of the pressure platform 21 are arranged on the upper part of the pressure platform 21. The rolling rollers 22 roll the sand and gravel on the pressure platform 21, and the rolled sand and gravel are discharged through the discharge chamber, and the dust is sucked into the dust suction chamber 31.

[0045] The pressure platform 21 is used to receive the sand and gravel to be rolled. A material dividing piece 25 is provided on the upper part of the pressure platform 21. When the sand and gravel to be rolled are put onto the pressure platform 21, the material is divided by the material dividing piece 25. When the rolling roller 22 rotates around the axis of the pressure platform 21 at the upper part of the pressure platform 21, a rolling area is formed. The material dividing piece 25 guides the sand and gravel to the rolling area, so that the rolling roller 22 can roll the sand and gravel when rotating.

[0046] Reference Figure 3 and Fig.10 : A guide plate 24 is arranged between the rolling rollers 22 and rotates synchronously with the rolling rollers 22 around the axis of the pressure platform 21. The bottom of the guide plate 24 contacts the upper end surface of the pressure platform 21. The extension direction of the guide plate 24 and the radial direction of the pressure platform 21 have an angle, and the angle is acute. The guide plates 24 are arranged from the inside to the outside along the radial direction of the pressure platform 21, and adjacent guide plates 24 are arranged in an alternating manner.

[0047] There are multiple guide plates 24, and the guide plates 24 form an annular sweeping area when rotating, and the rolling area formed by the rolling roller 22 when rotating on the pressure platform 21 is also annular. The guide plates 24 are arranged from the inside to the outside along the radial direction of the pressure platform 21, and the adjacent guide plates 24 are arranged in a staggered manner. There are three guide plates 24 in the schematic diagram of the present invention, and the three guide plates 24 form three annular sweeping areas on the upper part of the pressure platform 21, which are respectively named as the inner ring sweeping area, the middle ring sweeping area and the outer ring sweeping area. A material dividing piece 25 is arranged in the center of the pressure platform 21 to divide The material 25 can guide the sand and gravel falling into the pressure platform 21 to the inner ring sweeping area. After the sand and gravel in the inner ring sweeping area are rolled by the rolling roller 22, they are scraped by the guide plate 24 corresponding to the inner ring sweeping area and pushed toward the middle ring sweeping area. The guide plate 24 corresponding to the middle ring sweeping area pushes the sand and gravel entering its area to the outer ring sweeping area. Finally, the guide plate 24 corresponding to the outer ring sweeping area discharges the rolled sand and gravel into the discharge cavity and discharges them from the discharge port 11. It is worth noting that when the dust suction unit 3 is in operation, the external air can only enter the rolling cavity 23 from the discharge port 11.

[0048] Reference Figure 3 , Fig. 9 and Fig.11 A driving unit 26 is provided on the upper portion of the laminating roller 22 for driving the laminating roller 22 to rotate around the axis of the pressure platform 21.

[0049] The driving unit 26 includes a first rotary driver 261, a gear 262, a gear ring 263, a rotating ring 264 and a feed pipe 265. The rotating ring 264 is rotatably arranged on the upper part of the pressure platform 21, and the axis of the rotating ring 264 is colinear with the axis of the pressure platform 21. The gear ring 263 is fixedly arranged on the upper part of the rotating ring 264, and the gear 262 is rotatably arranged on one side of the gear ring 263. The gear ring 263 and the gear 262 are meshed with each other. The first rotary driver 261 is arranged on the upper part of the gear 262. The first rotary driver 261 is used to rotate the gear 262. As the driving gear 262 rotates, the laminating roller 22 is arranged on the rotating ring 264. When the rotating ring 264 rotates, the laminating roller 22 rotates on the pressure platform 21 around the axis of the pressure platform 21. The feed pipe 265 is vertically fixed on the upper part of the inner ring of the rotating ring 264. The first rotary driver 261 is preferably a servo motor. When the first rotary driver 261 is started, the first rotary driver 261 drives the gear ring 263 to rotate through the gear 262, thereby making the rotating ring 264 drive the laminating roller 22 to rotate on the pressure platform 21.

[0050] Reference Figure 1 , Figure 2 , Figure 4 , Figure 6 , Fig. 9 and Fig.10: A feeding unit 5 is arranged on the upper part of the rolling unit 2, and a second feeding port 53 is vertically arranged in the middle position of the rolling unit 2. The feeding unit 5 includes a feeding disk 51 rotatably arranged on the upper part of the rolling unit 2, and a plurality of transport grooves 511 are vertically opened on the feeding disk 51. The transport grooves 511 are arranged around the axis of the feeding disk 51. The casing 52 is sleeved on the outer periphery of the feeding disk 51, and a first feeding port 521 is opened on the upper part of the casing 52. The same rotating transport groove 511 can only coincide with one of the first feeding port 521 or the second feeding port 53 at the same time.

[0051] The second feed port 53 refers to the upper part of the feed pipe 265. A feed shell 54 is arranged on the upper part of the first feed port 521. The sand and gravel to be rolled are put into the first feed port 521 from the feed port. A second rotary driver 55 is vertically arranged on the upper part of the casing 52. The output end of the second rotary driver 55 is fixedly connected to the upper part of the feed tray 51. The second rotary driver 55 is used to drive the feed tray 51 to rotate in the casing 52. The second rotary driver 55 is preferably a servo motor. For the sake of convenience and understanding, a transport trough 511 in one of the feed trays 51 is described herein. When the transport trough 511 passes through the first feed port 521 driven by the feed tray 51, the sand and gravel to be rolled accumulated in the feed shell 54 falls into the transport trough 511. The transport trough 511 is filled, and then the feed plate 51 continues to rotate. After the transport trough 511 leaves the first feed port 521, the transport trough 511 moves toward the second feed port 53 driven by the feed plate 51. When the transport trough 511 intersects with the second feed port 53, the compacted sand and gravel accumulated in the transport trough 511 falls onto the pressure platform 21 through the second feed port 53. In this way, when feeding, the second feed port 53 can be kept in a sealed state, and at the same time, the sand and gravel can be continuously put into the compacting unit 2. The second feed port 53 is set to a sealed state, so that the outside air can only enter the compacting chamber 23 from the discharge port 11, so that the sand and gravel falling from the discharge chamber can be de-powdered by the flowing air.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An energy-saving de-powdering sand making device, comprising a housing (1) and a rolling unit (2) arranged in the housing (1); It is characterized in that A dust suction unit (3) is provided on the outer cover of the rolling unit (2), and the dust suction unit (3) forms a dust suction chamber (31) on the outer side of the rolling unit (2). The dust suction chamber (31) is an annular structure, and an annular blade (33) is provided on the upper part of the dust suction chamber (31). When the rolling unit (2) rolls sand and gravel, the annular blade (33) rotates synchronously with the rolling unit (2), and the annular blade (33) forms an airflow from top to bottom in the dust suction chamber (31). A sprayer (32) is also provided on the side wall of the dust suction chamber (31), and the sprayer (32) sprays water mist into the dust suction chamber (31); An auxiliary unit (4) is arranged below the sprayer (32), and the auxiliary unit (4) comprises an air pump (41), and the air pump (41) is used to extract air from the dust suction chamber (31); The auxiliary unit (4) further comprises a first pipeline (42) and a second pipeline (43), wherein the first pipeline (42) is horizontally arranged at one side of the dust suction chamber (31) and is in communication with the dust suction chamber (31), and the second pipeline (43) is vertically arranged at the end of the first pipeline (42), the second pipeline (43) and the first pipeline (42) are in communication with each other, and the air pump (41) is arranged at the upper part of the second pipeline (43); A filter cotton (44) is provided at the connection point between the first pipeline (42) and the dust suction chamber (31); A scraper (34) is arranged at the bottom of the dust suction chamber (31) and can rotate synchronously with the annular blade (33). The scraper (34) is in contact with the bottom of the dust suction chamber (31) and can completely sweep the bottom of the dust suction chamber (31) when rotating with the annular blade (33). A discharge port is opened at the bottom of the dust suction chamber (31). An extension pipe (35) is vertically arranged at the lower part of the discharge port. A switch valve (36) is arranged on the extension pipe (35). When the switch valve (36) is closed, the bottom of the extension pipe (35) is closed to form a material storage groove. When the scraper (34) rotates at the bottom of the dust suction chamber (31), the sediment deposited at the bottom of the dust suction chamber (31) can be pushed into the material storage groove. Two water level sensors (38) are arranged vertically below the filter cotton (44), the water level sensor (38) located on the upper side is used to monitor the highest water level at the bottom of the dust suction chamber (31), and the water level sensor (38) located on the lower side is used to monitor the lowest water level at the bottom of the dust suction chamber (31), when the water level sensor (38) located on the upper side monitors the water level, the switch valve (36) is opened, and when the water level sensor (38) located on the lower side cannot monitor the water level, the switch valve (36) is closed.

2. The energy-saving de-powdering sand making equipment according to claim 1 is characterized in that: The rolling unit (2) comprises a rolling chamber (23) arranged at the upper part of the shell (1) and interconnected with the dust suction chamber (31), a pressure platform (21) and a rolling roller (22) are arranged in the rolling chamber (23), the pressure platform (21) is a rotating body structure, the pressure platform (21) is arranged at the upper part of the shell (1) and a discharge chamber is present between the pressure platform (21) and the shell (1), a plurality of rolling rollers (22) rotating around the axis of the pressure platform (21) are arranged at the upper part of the pressure platform (21), the rolling rollers (22) roll the sand and gravel on the pressure platform (21), the rolled sand and gravel are discharged through the discharge chamber, and the dust is sucked into the dust suction chamber (31).

3. An energy-saving de-powdering sand making equipment according to claim 2, characterized in that: A guide plate (24) is arranged between the rolling rollers (22) and rotates synchronously with the rolling rollers (22) around the axis of the pressure platform (21). The bottom of the guide plate (24) contacts the upper end surface of the pressure platform (21). The extension direction of the guide plate (24) and the radial direction of the pressure platform (21) form an acute angle. The guide plates (24) are arranged from the inside to the outside along the radial direction of the pressure platform (21), and adjacent guide plates (24) are arranged in a staggered manner.

4. The energy-saving de-powdering sand making equipment according to claim 3 is characterized in that: A driving unit (26) for driving the rolling roller (22) to rotate around the axis of the pressure platform (21) is arranged on the upper part of the rolling roller (22).

5. The energy-saving de-powdering sand making equipment according to claim 1 is characterized in that: A feeding unit (5) is arranged on the upper part of the rolling unit (2), and a second feeding port (53) is vertically arranged in the middle position of the rolling unit (2). The feeding unit (5) comprises a feeding disc (51) rotatably arranged on the upper part of the rolling unit (2), and a plurality of transport grooves (511) are vertically opened on the feeding disc (51), and the transport grooves (511) are arranged around the axis of the feeding disc (51). A casing (52) is sleeved on the outer periphery of the feeding disc (51), and a first feeding port (521) is opened on the upper part of the casing (52), and the same rotating transport groove (511) can only overlap with one of the first feeding port (521) or the second feeding port (53) at the same time.

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