CN210097911U

CN210097911U - Dry-type sand production line

Info

Publication number: CN210097911U
Application number: CN201920782068.8U
Authority: CN
Inventors: 吴世瑞; 林国桥; 沈庆兰
Original assignee: SHAOGUAN HELI HEAVY INDUSTRY MACHINERY CO LTD
Current assignee: SHAOGUAN HELI HEAVY INDUSTRY MACHINERY CO LTD
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-02-21
Anticipated expiration: 2029-05-28

Abstract

The utility model relates to the technical field of dry-type sand making, and discloses a dry-type sand making production line, which comprises a screening type vibrating feeder for screening raw stone materials and a jaw crusher communicated with the screening type vibrating feeder; the impact crusher or the cone crusher is communicated with the jaw crusher through a belt conveyor and is used for crushing stone materials crushed by the jaw crusher; the first blockage removing vibrating screen is communicated with the bin and the impact crusher or the cone crusher through a belt conveyor, stone materials with the particle size larger than that of finished sand screened by the first blockage removing vibrating screen enter the bin, and the stone materials in the bin are crushed and manufactured into sand through a crushed stone sand manufacturing machine or a mixed crushing type sand manufacturing machine; and subsequently, the quality of the sand powder is improved by crushing, sand making, drying and powder removing, powder content adjustment and water adding and mixing. The utility model discloses a multistage breakage has reduced the powder content of sand grain, utilizes the stoving gumming to replace the washing, to the heat cyclic utilization of stoving gumming, energy-concerving and environment-protective, production efficiency is high.

Description

Dry-type sand production line

Technical Field

The utility model relates to a dry-type system sand technical field especially relates to a dry-type system sand production line.

Background

In order to protect the natural environment and avoid excessive mining and excavation of the river channel, the state popularizes and uses the machine-made sand to replace the natural river sand. In order to relieve the situation of shortage of supply of sand and stone materials, the machine-made sand industry and the sand making machine are rapidly popularized, but the traditional sand making machine and the simple sand making process are commonly adopted at present, and the quality of the machine-made sand is difficult to ensure. In the building construction, when the quality of the machine-made sand does not reach the standard, in order to enable the strength of the concrete to reach the standard and pass the inspection, the using amount of cement or additives has to be increased, the cost of the concrete is increased by increasing the using amount of the cement or additives, the concrete is easy to crack due to the excessive using amount of the cement, and some additives can influence the later strength and the service life of the concrete, thereby forming potential safety hazards to the building engineering.

In the prior sand making production, no matter the hardness and the grain diameter of raw stone materials and the grain diameter of finished products are different, the sand making machines with the same structure and the same rotating speed are adopted. It has the following drawbacks:

1. the produced finished product sand has the advantages of overproof shape, high crushing value, less sand amount in the middle section with the granularity of 0.315-1.25 mm, unqualified continuous gradation of machine-made sand, and difficult quality conformity with the requirement of concrete sand.

2. Finished sand produced by the existing sand making process generally has the over-standard powder content, and powder is washed away by water. The washing and powder removal not only needs to use a large amount of water resources, but also forms a large amount of sewage and sludge to be treated in the powder removal process, the sewage and sludge treatment needs to be carried out by pumping, adding a precipitation agent for precipitation, carrying out pressure drying treatment, clearing and transporting and the like, the equipment investment is large, the daily treatment cost is high, the sewage after treatment hardly reaches the cleaning standard due to large sewage amount, the sludge powder containing the precipitation agent after treatment affects the environment, and the reutilization and sludge stacking are difficult.

3. The water washing powder can cause stone materials crushed into powder to run off along with water flow, so that the waste of raw materials reaches more than 20 percent, and the sewage treatment machine cannot stably and effectively run for a long time, so that the production cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dry-type system sand production line convenient to guarantee mechanism sand quality, improve raw and other materials utilization ratio, energy-concerving and environment-protective.

In order to realize the above-mentioned purpose, the utility model provides a dry-type system sand production line, including the feed bin of storing the building stones, pass through the rubble system sand machine or mix broken formula system sand machine of belt feeder intercommunication with the feed bin, still include:

the screening type vibrating feeder is used for screening raw stone materials;

the jaw crusher is communicated with the sieving type vibrating feeder and is used for crushing stones with the grain size larger than 100mm sieved by the sieving type vibrating feeder;

the impact crusher or the cone crusher is communicated with the jaw crusher through a belt conveyor and is used for crushing stone materials crushed by the jaw crusher;

the first blockage removing vibrating screen is communicated with the storage bin and the impact crusher or the cone crusher through a belt conveyor and is used for screening stones crushed by the impact crusher or the cone crusher, the stones which are screened by the first blockage removing vibrating screen and have the particle size larger than that of finished sand enter the storage bin, and the stones in the storage bin are crushed by a broken stone sand making machine or a mixed crushing sand making machine to make sand;

the second blockage removing vibrating screen is communicated with the broken stone sand making machine or the mixed crushing type sand making machine through a belt conveyor and is used for screening sand grains after the broken stone sand making machine or the mixed crushing type sand making machine crushes and makes sand, and the sand grains which are screened out through the second blockage removing vibrating screen and are larger than the grain size of finished sand are sent into a storage bin through the belt conveyor;

the first drying type sand powder grading regulator is communicated with the first blockage removing vibrating screen through a belt conveyor and is used for drying and removing powder for the first time on sand grains which are screened by the first blockage removing vibrating screen and meet the grain size of finished sand;

the second drying type sand powder grading regulator is communicated with the second blockage removing vibrating screen and the first drying type sand powder grading regulator through a belt conveyor and is used for drying and removing powder for the second time on sand grains which are screened out by the second blockage removing vibrating screen and meet the grain size of finished sand after the first drying and removing powder;

and the humidifying molding sand powder grading regulator is communicated with the second drying molding sand powder grading regulator through a belt conveyor and is used for regulating the powder content of the sand subjected to secondary drying and powder removal, adding water and mixing after the powder content of the sand is regulated to enable the powder and the sand to be adhered into a whole, and the belt conveyor conveys the sand powder treated by the humidifying molding sand powder grading regulator to a finished product material pile.

As the preferred scheme, the screening type vibrating feeder is communicated with the impact crusher or the cone crusher through a belt conveyor, and stones which are screened by the screening type vibrating feeder and have the grain sizes of less than 100mm are conveyed into the impact crusher or the cone crusher through the belt conveyor to be crushed.

As a preferred scheme, a discharge port of the impact crusher or the cone crusher, a discharge port of the first blockage removing vibrating screen, a discharge port of the second blockage removing vibrating screen and a discharge port of the broken stone sand making machine or the mixed crushing type sand making machine are communicated with a sand-powder separator for separating sand powder.

As the preferred scheme, first stoving molding sand powder gradation regulator and second stoving molding sand powder gradation regulator all include the host computer jar body and connect the suction line on the host computer jar body, and the suction line is connected with the dust collector, is connected with the fan on the suction line, and the suction line is with the air current drainage of stoving sand powder to the host computer jar body in to carry out thermal cyclic utilization.

The utility model provides a dry-type system sand production line has following beneficial effect:

1. screening the stone material by a screening type vibrating feeder, crushing the stone material with the particle size larger than 100mm by a jaw crusher, crushing the crushed stone material by an impact crusher or a cone crusher, and crushing the crushed stone material by the impact crusher or the cone crusher to produce sand by a crushed stone sand making machine or a mixed crushing sand making machine; firstly, stone with the grain size larger than 100mm is crushed, then crushed and screened by a counterattack crusher or a cone crusher, crushed and screened by a stone-crushing sand making machine or a mixed crushing sand making machine, and sand grains meeting the grain size of finished sand are separated in time, the crusher arranged step by step is used for crushing the stone, so that the sand grains meeting the grain size of the finished sand are prevented from being excessively crushed into powder in the crusher, the crushing value of the sand grains is reduced, and the quality of the finished sand and the utilization rate of raw materials are improved;

2. drying and removing powder from the sand grains which accord with the grain size of the finished sand and the sand grains which accord with the grain size of the finished sand after crushing and sand making; compared with the water washing powder removal in the traditional technology, no additional water source is needed, no sewage and sludge is generated, and the environment is protected; the drying type sand powder grading regulator dries the powder, and then dries and removes the powder for the sand powder, promotes the separation of the sand powder, is beneficial to the powder falling off from the sand, effectively reduces the powder content, and is beneficial to the subsequent regulation of the sand powder content;

3. after the sand grains are dried and powdered, the powder content of the sand grains is very low, finished sand powder adhesion is ensured by humidifying powder amount adjustment and water adding mixing, the powder content of the dried and powdered sand grains is uniformly adjusted by a humidifying sand powder grading adjuster, the stability of the powder content of the sand grains is favorably ensured, the water adding mixing stirring is carried out to bond the sand powder together, the powder falling is avoided, the uniformity of the powder content of the finished sand is ensured, and the quality of the finished sand is ensured.

Drawings

FIG. 1 is a schematic structural view of the dry sand production line according to an embodiment of the present invention;

FIG. 2 is a schematic view of a production flow of a dry sand production line according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a first drying type sand grading regulator and a second drying type sand grading regulator in the embodiment of the present invention;

in the figure, 10, a sieving type vibrating feeder; 11. a material pouring platform; 12. a belt conveyor; 20. a jaw crusher; 30. impact crushers or cone crushers; 40. a first blockage clearing vibrating screen; 50. a storage bin; 60. a stone crushing sand making machine or a mixed crushing type sand making machine; 70. a second blockage clearing vibrating screen; 80. a sand-powder separator; 91. a first drying type sand powder grading regulator; 92. a second drying type sand powder grading regulator; 100. a humidifying sand powder grading regulator; 110. stacking finished products; 120. a host tank body; 121. an air extraction duct; 122. a sand powder drying cylinder; 123. a dust collector; 124. a fan; 122a, a can shell; 122b, a heating wire.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 and 2, the dry sand production line according to the preferred embodiment of the present invention avoids the raw material from being excessively crushed by stepwise crushing and screening, improves the utilization rate of the raw material, and can also accurately control the powder content of the sand; meanwhile, the powder content in the sand grains can be controlled to be a lower level through drying and removing the powder, so that the subsequent accurate adjustment of the powder content is facilitated; the dried sand grains are humidified to adjust the powder content, and water is added for mixing, so that the sand powder is favorably adhered together, and the stability of the quality of finished sand is favorably ensured.

Based on above-mentioned technical scheme, provide a dry-type system sand production line in this embodiment, adopt the dry-type system sand method, compare in wet-type system sand method, do not adopt the washing to remove the powder to the sand grain, reduce the loss to the water resource, also can avoid rivers to cause the dust loss in the sand grain, conveniently collect the dust and mix with the sand grain again and make continuous gradation up standard, improve the sand powder quality of finished product sand.

Specifically, the bunker 50 is used for storing stones, the bunker 50 is used for transferring stones, and the bunker 50 is provided with a bunker feeder matched with the bunker 50 and used for conveying and discharging stones in the bunker 50.

Specifically, the device further comprises a broken stone sand making machine or a mixed crushing type sand making machine 60 which is communicated with the storage bin 50 through the belt conveyor 12, wherein the broken stone sand making machine or the mixed crushing type sand making machine 60 is used for crushing and making sand. According to the actual production condition, the broken stone sand making machine or the mixed crushing type sand making machine 60 can adopt models with different structures and different rotating speeds according to the hardness and the grain diameter of the raw stone material and the grain diameter difference of a finished product so as to improve the crushing effect on the raw stone material, reduce the powder content of the raw stone material, reduce the needle sheet proportion and reduce the crushing value.

As shown in fig. 1, the dry sand production line of the production line further includes a screening type vibrating feeder 10, the screening type vibrating feeder 10 is used for screening the raw stones, and the screening type vibrating feeder 10 can screen the raw stones in the vibrating process. The method is a first-step screening of raw stone materials, and the raw stone materials which do not meet the specification are further crushed, for example, stone materials with the particle size of more than 100mm are screened out and are crushed by subsequent crushing equipment so as to meet the feeding requirements of the subsequent crushing equipment.

As shown in fig. 1, the production line further comprises a jaw crusher 20 communicated with the sieving type vibrating feeder 10, wherein the jaw crusher 20 is used for crushing and refining stones screened by the sieving type vibrating feeder 10, and the grain sizes of the stones are larger than 100mm, so that all the stones reach the degree that the grain sizes are smaller than 100mm, and the subsequent crushing treatment is facilitated. The screening type vibrating feeder 10 is used for screening out sand grains with the grain size smaller than 100mm, so that the sand grains with the grain size smaller than 100mm can directly enter a subsequent crushing treatment process, and the efficiency of refining and crushing treatment on the raw stone materials is improved. Meanwhile, the excessive crushing of the raw stone with the grain size of less than 100mm in the jaw crusher 20 is avoided, the crushing value of sand grains is reduced, and the powder content is reduced.

Compared with the existing sand production line, the utility model discloses a screen separation type vibrating feeder 10, jaw breaker 20 carry out the processing of former building stones, have avoided directly carrying out the broken sand grain that reaches finished product sand particle diameter specification to the former building stones of all specifications, make and have avoided the excessive breakage to the sand grain, have reduced the powder content and the crushing value of sand grain, have improved the quality of finished product sand, also can practice thrift raw and other materials.

The production line further comprises an impact crusher or cone crusher 30 communicated with the jaw crusher 20 through the belt conveyor 12, and used for crushing stone materials crushed by the jaw crusher 20. The stone material crushed by the jaw crusher 20 is stone material with the grain size smaller than 100mm, the stone material with the grain size smaller than 100mm is crushed for the first time by adopting an impact crusher or a cone crusher 30, the grain size of the stone material crushed for the first time is larger, and the whole stone material cannot be crushed to reach the grain size of finished sand.

The production line further comprises a first blockage cleaning vibrating screen 40 communicated with the bin 50 and the impact crusher or the cone crusher 30 through the belt conveyor 12, wherein the first blockage cleaning vibrating screen 40 is used for screening stone materials after the impact crusher or the cone crusher 30 is crushed for the first time. The stone material is crushed for the first time to generate a part of powder, a part of sand particles according with the grain size of the finished sand and a part of sand particles larger than the grain size of the finished sand, at the moment, the powder is screened out, the sand particles according with the grain size of the finished sand are screened out, the sand particles according with the grain size of the finished sand can be prevented from being excessively crushed in a crusher to generate dust, the waste of the stone material is avoided, and the crushing value and the powder content of the sand particles can be reduced.

Specifically, the stones larger than the grain size of the finished sand screened by the first blocking vibration screen 40 enter the bin 50, and the bin 50 temporarily stores the stones larger than the grain size of the finished sand for the subsequent second crushing. The stone material after the first crushing by the impact crusher or the cone crusher 30 after being screened by the first blocking-removing vibrating screen 40 reaches the sand grains with the grain size larger than that of the finished sand in the bin 50, and the raw stone material can be further processed to meet the grain size of the finished sand through the second crushing.

Specifically, the stone in the bunker 50 is crushed by a stone crusher or a mixed crushing type sand maker 60 to make sand. The stone is crushed for the second time by a stone crushing sand making machine or a mixed crushing sand making machine 60, and the sand grains can be further processed to meet the grain size of the finished sand.

The production line further comprises a second blockage removing vibrating screen 70 communicated with the gravel sand making machine or the mixed crushing type sand making machine 60 through the belt conveyor 12, the second blockage removing vibrating screen 70 is used for screening sand grains after the gravel sand making machine or the mixed crushing type sand making machine 60 crushes and makes sand, and sand grains larger than the grain size of finished sand screened by the second blockage removing vibrating screen 70 are sent into the storage bin 50 through the belt conveyor 12. The stone crushed for the second time by the stone crushing sand making machine or the mixed crushing sand making machine 60 is sieved by the second blockage removing vibrating screen 70, and the sand grains with the grain size larger than that of the finished sand are sent to the secondary crushing circulation again for repeated crushing until the requirement of the grain size of the finished sand is met, so that the grain size requirement quality of the sand grains is ensured.

Meanwhile, the second-time crushed sand grains are screened by the second blockage removing vibrating screen 70, so that the sand grains meeting the requirement of the grain size of the finished sand can be screened out in time, the sand grains are prevented from being excessively crushed into powder in a crusher, the crushing value of the sand grains is reduced, and the utilization rate of raw stones is improved.

The stone is crushed by a reaction crusher or a cone crusher 30 into a first crushing of raw stone, and the stone is crushed by a broken stone sand making machine or a mixed crushing type sand making machine 60 into a second crushing of the stone, and sand grains are screened by matching with a first blockage removing vibrating screen 40 and a second blockage removing vibrating screen 70. With the broken system sand of system sand machinery of different structures, different rotational speeds, carry out the breakage step by step to the building stones to in time to the sand screening play that accords with finished product sand particle diameter, avoided the sand grain that accords with finished product sand particle diameter excessively broken in the breaker, improved the utilization ratio to former building stones, reduced the powder content of sand grain, reduced the crushing value of sand grain, guaranteed the quality of finished product sand.

This production line still includes and first stoving molding sand powder gradation regulator 91 that passes through belt feeder 12 intercommunication with first clear stifled shale shaker 40, and first stoving molding sand powder gradation regulator 91 is through drying the sand grain, does benefit to the dust and drops from the sand grain surface, can carry out high-efficient gumming to the sand grain. The first drying type sand powder grading regulator 91 can supply hot air into the sealed shell through the sealed shell, and the hot air flow dries sand particles to make dust fall off from the sand particles and impact the sand particles to make the dust fall off from the sand particles so as to achieve the purpose of removing powder from the sand particles. The sand grains which are screened by the first blocking cleaning vibrating screen 40 and meet the grain size of the finished sand are dried and pulverized for the first time through the first drying type sand grading regulator 91, so that the pulverized sand which is screened by the first blocking cleaning vibrating screen 40 and meet the grain size of the finished sand can be pulverized to reach a lower value, and the subsequent adjustment of the powder content of the sand grains is facilitated.

The production line further comprises a second drying type sand powder grading regulator 92 communicated with the second blocking cleaning vibrating screen 70 and the first drying type sand powder grading regulator 91 through a belt conveyor 12, wherein the second drying type sand powder grading regulator 92 is used for drying and removing powder for the second time on sand grains which are screened out by the second blocking cleaning vibrating screen 70 and meet the grain size of finished sand after the first drying and removing powder. The sand grains which are screened by the second blockage removing vibrating screen 70 and meet the grain size of the finished sand are dried in a second drying type sand powder grading regulator 92, and the sand grains after the first drying treatment of the first drying type sand powder grading regulator 91 are dried and powdered again, so that the powder content in the sand grains can be integrally reduced to a controllable lower value, namely the powder content in the sand grains reaches a controllable value.

Compare with wet-type system sand, the utility model discloses a stoving gumming process heaies up to the sand grain surface for the dust is convenient for drop from the sand grain surface, and the sand grain is automatic to drop from the sand grain surface in the striking, need not the washing and removes dust, has saved the use of a large amount of water resources, can not produce sewage mud, and the dust can be through collecting the back and in the level join in marriage the utilization once more in the process, has improved the utilization ratio to former building stones simultaneously. Compared with the traditional dry sand making method, the production line improves the efficiency of dust falling off from the surface of sand grains through a drying process.

The production line further comprises a humidifying molding sand grading regulator 100 communicated with the second drying molding sand grading regulator 92 through a belt conveyor 12, wherein the humidifying molding sand grading regulator 100 is used for regulating the powder content of sand subjected to secondary drying and powder removal. The moisture of the sand grains is increased by adding water into the sand grains and stirring, and a certain amount of powder is added into the humidified sand grains according to the grading requirement, so that the powder content in the sand grains reaches the grading requirement. Meanwhile, the powder and the sand are bonded into a whole by adding water and mixing, so that the dust on the sand does not easily fall off the sand, and the sand and the dust are uniformly mixed.

Meanwhile, the hot air flow of the first drying type sand powder grading regulator 91 and the second drying type sand powder grading regulator 92 during drying can be recycled, so that the dust removal efficiency is improved, and the energy conservation and the environmental protection are realized.

Specifically, the first drying type sand powder grading regulator 91 and the second drying type sand powder grading regulator 92 adopt negative pressure dust removal, so that dust can be prevented from reaching the external environment, and environmental protection is facilitated.

Specifically, the belt conveyor 12 sends the sand powder processed by the humidifying sand powder gradation adjuster 100 to the finished product pile 110 to obtain the finished product sand.

Preferably, the screening type vibrating feeder 10 is communicated with the impact crusher or the cone crusher 30 through a belt conveyor 12, and stones with the particle size smaller than 100mm screened by the screening type vibrating feeder 10 are conveyed into the impact crusher or the cone crusher 30 through the belt conveyor 12 to be crushed. Make the building stones that the particle size that sieve type vibrating feeder 10 sieves out be less than 100mm can directly carry out the breakage through impact crusher or cone crusher 30, avoided the building stones that the particle size is less than 100mm excessively broken in jaw crusher 20, produce the dust, cause the waste of former building stones, also can improve the efficiency that impact crusher or cone crusher 30 handled former building stones simultaneously.

Preferably, the discharge port of the impact crusher or cone crusher 30, the discharge port of the first blockage removing vibrating screen 40, the discharge port of the second blockage removing vibrating screen 70, and the discharge port of the crushed stone sand making machine or mixed crushing sand making machine 60 are all communicated with a sand-powder separator 80 for separating sand powder. The sand-powder separator 80 separates sand powder by adopting a negative-pressure dust removal mode, so that dust in the separation process of the sand powder is guaranteed to be blown out, and the sand-powder separator is energy-saving and environment-friendly. Meanwhile, the sand-powder separator 80 can be used for primarily separating dust from sand, and recovering the dust, so that the dust is used in the subsequent processes, and the utilization rate of raw materials is improved.

The sand powder is separated by the sand powder separator 80, the dust removal burden of the first drying type sand powder grading regulator 91 and the dust removal burden of the second drying type sand powder grading regulator 92 can be reduced, the sand powder separation effect is improved, compared with a traditional dry sand making method, the production line can timely separate sand powder to recover dust for use in the grading process, and the utilization rate of raw stone materials is improved.

Preferably, as shown in fig. 3, the first drying type sand grading regulator 91 and the second drying type sand grading regulator 92 of the production line both include a main machine tank 120 and an air exhaust pipeline 121 connected to the main machine tank 120, sand is impacted and separated in the main machine tank 120, a sand drying cylinder 122 for drying sand is connected to the bottom of the main machine tank 120, the sand drying cylinder 122 is a cavity for drying sand, and the air exhaust pipeline 121 is used for providing circulating hot air flow to the main machine tank 120 and the sand drying cylinder 122. The hot air flow dries the sand grains. The dust collector 123 is connected to the air draft pipeline 121, the dust collector 123 is used for collecting dust in hot air flow, purifying the dust in the hot air flow, the hot air flow enters the air draft pipeline 121 again after dust collection, the air draft pipeline 121 is connected with the fan 124, the fan 124 is used for providing power for circulation of the hot air flow, and the air draft pipeline 121 guides air flow of dried sand powder to flow back to the main machine tank body 120 and the sand powder drying cylinder 122 so as to recycle heat. The sand drying drum 122 comprises a tank shell 122a for sealing and an electrically driven heating wire 122b arranged in the tank shell 122a, and the air flow in the air draft pipeline 121 can be heated through the electrically driven heating wire 122b to supplement heat to the air flow, so that the use requirement of sand drying is met.

To sum up, the utility model provides a pair of dry-type system sand production line carries out the breakage to the building stones through the breaker that sets up step by step, has avoided the sand grain that accords with finished product sand grain diameter excessively to break into powder in the breaker, reduces the crushing value of sand grain, has improved finished product sand quality and to the utilization ratio of raw materials. Meanwhile, the drying type sand powder grading regulator dries and removes the powder from the sand powder, promotes the separation of the sand powder, is beneficial to the powder falling off from the sand grains and is beneficial to the subsequent regulation of the content of the sand powder; the humidifying sand powder grading regulator is used for uniformly regulating the powder content of the dried and powder-removed sand, so that the powder content of the sand is ensured, the sand powder is bonded together after water is added and mixed, and the quality stability of the finished sand is ensured. Compared with a water washing sand making method and a traditional dry sand making method, the dry sand making production line not only avoids the pollution of sewage and sludge to the environment, but also has high raw material utilization rate, no sewage and sludge treatment cost, water resource saving, precipitation agent saving and benefit improvement by more than 30%.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a dry-type system sand production line, is including the feed bin of storing the building stones, pass through the rubble system sand machine or the mixed broken formula system sand machine of belt feeder intercommunication with the feed bin, its characterized in that still includes:

the screening type vibrating feeder is used for screening raw stone materials;

2. A dry-type sand production line as claimed in claim 1, wherein the screening type vibrating feeder is communicated with the impact crusher or the cone crusher through a belt conveyor, and stones with the particle size of less than 100mm screened by the screening type vibrating feeder are conveyed to the impact crusher or the cone crusher through the belt conveyor for crushing.

3. A dry-type sand production line as claimed in claim 2, wherein the discharge port of the impact crusher or cone crusher, the discharge port of the first blockage removal vibrating screen, the discharge port of the second blockage removal vibrating screen, and the discharge port of the crushed stone sand making machine or the mixed crushing type sand making machine are all communicated with a sand-powder separator for separating sand powder.

4. A dry sand production line as claimed in claim 3, wherein the first and second drying sand grading conditioners each comprise a main body tank and an air suction duct connected to the main body tank, the air suction duct is connected to the dust collector, the air suction duct is connected to a blower, and the air suction duct guides the flow of the dried sand into the main body tank for heat recycling.