A high-efficiency sand mixing device for pipe production and a method of using the same

Abstract

The application belongs to the technical field of foundry sand mixers, and particularly relates to a high-efficiency sand mixing device for pipe production and a use method thereof. The high-efficiency sand mixing device for pipe production comprises a sand mixing box, a fixed column is fixed to the inner wall of the bottom of the sand mixing box, a driving rod is arranged at the top end of the fixed column, a rotating plate is slidably arranged on the outer wall of the driving rod, and the rotating plate rotates in the sand mixing box, first scrapers are fixed to the bottom of both sides of the rotating plate and used for scraping off raw materials attached to the inner wall of the sand mixing box, the rolling wheel and the connecting plate rotate around the fixed column at the same time, the raw materials are rolled, the mixing of the raw materials in the later stage is facilitated, the raw materials are stirred from multiple directions through the cooperation of the rolling wheel, the first stirring blade and the second stirring blade, and the sand mixing effect is further provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundry sand mixing machine, in particular to a high-efficiency sand mixing device for pipe production and a use method thereof. BACKGROUND

[0002] The sand mixing machine is a device for uniformly mixing various components in the molding sand and effectively coating the binder on the surface of the sand particles. The sand mixing machine uses the relative movement of the grinding wheel and the grinding disc to grind and mill the material placed between them, thereby crushing the material while mixing it during the crushing process. It is an ideal device for producing non-fired bricks, sand-lime bricks, cement bricks, refractory bricks, etc., as well as crushing and mixing brick-making raw materials such as fly ash, boiler slag, tailings, and industrial waste slag. When casting pipes, the sand mixing machine is used to thoroughly mix various pipe raw materials to facilitate subsequent processes.

[0003] In the prior art, the following problems still exist during the use of the sand mixing machine:

[0004] 1. In the prior art, the mixing process mainly uses stirring blades for mixing, but the mixing effect is poor and cannot achieve sufficient and uniform mixing of multiple raw materials.

[0005] 2. Additional equipment is required to screen impurities in the raw materials before mixing, which increases the cost of equipment. In the screening process, impurities cannot be automatically removed and require manual operation, which increases the work intensity and affects the mixing efficiency.

[0006] To solve the above problems, the present application proposes a high-efficiency sand mixing device for pipe production and a use method thereof. SUMMARY

[0007] The purpose of the present application is to solve the problems of the prior art, such as the inability to sufficiently and uniformly mix multiple raw materials, the need for additional equipment to screen raw materials, and the inability to automatically remove impurities during the screening process. A high-efficiency sand mixing device for pipe production and a use method thereof are proposed.

[0008] To achieve the above purpose, the present application adopts the following technical solutions:

[0009] A high-efficiency sand mixing device for pipe production, comprising a sand mixing box, a fixed column is fixed to the inner wall of the bottom of the sand mixing box, a drive rod is provided at the top end of the fixed column, a rotating plate is slidably provided on the outer wall of the drive rod, and the rotating plate rotates in the sand mixing box, a first scraper is fixed to the bottom of both sides of the rotating plate for scraping off the raw materials adhering to the inner wall of the sand mixing box;

[0010] It also includes two grinding wheels, both of which are located below the rotating plate, a sieve plate is slidably connected inside the sand mixing box above the drive rod, and the sieve plate is inclined.

[0011] The mixing structure is arranged in the fixed column and the sand mixing box, and is used for driving the rolling wheels to roll and mix the raw materials;

[0012] The screening structure is arranged in the rotating plate and one of the rolling wheels, and is used for driving the screen plate to move up and down to screen the raw materials;

[0013] The impurity discharging structure is arranged in one of the first scrapers, and is used for enabling the driving rod to push the screen plate to move upwards to discharge the impurities to the outside.

[0014] In a possible design, the mixing structure comprises a driving motor fixed in the fixed column, an output shaft of the driving motor is fixed with a driving shaft, a top end of the driving shaft is sealingly and slidingly extended into the driving rod, an outer wall of the fixed column is fixedly sleeved with a second bevel gear, the outer wall of the fixed column is rotationally sleeved with a protection cylinder, the second bevel gear is located in the protection cylinder, two rotating shafts are rotationally connected to one side of the two first scrapers close to each other, one end of the two rotating shafts close to each other is rotationally extended into the protection cylinder and is fixed with a first bevel gear, the first bevel gear is engaged with the second bevel gear, the first bevel gear and the second bevel gear are cooperatively driven to rotate the rotating shaft, the outer wall of the two rotating shafts is fixedly sleeved with two connecting columns, the outer wall of the two connecting columns is fixed with a plurality of connecting plates, one end of the plurality of connecting plates away from the connecting columns is fixedly connected with the inner wall of the rolling wheel, the rotating shaft is cooperatively used with the connecting columns and the connecting plates to drive the rolling wheel to rotate to roll the raw materials, and the rotation of the rolling wheel is used to stir the raw materials in the vertical direction; the driving motor is used to drive the driving shaft to rotate, the driving shaft is used to drive the rotating plate and the first scraper to rotate through the driving rod, the first scraper drives the rotating shaft to rotate with the fixed column as the center, and the cooperation of the first bevel gear and the second bevel gear can enable the rolling wheel to rotate while moving in the annular groove, so that the raw materials falling into the annular groove can be crushed into smaller particles, and the raw materials can be fully mixed and evenly distributed in the later stage.

[0015] In a possible design, the screening structure comprises a push rod slidingly penetrating the rotating plate, a top end of the push rod is cooperatively used with the screen plate to drive the screen plate to move upwards, an outer wall of the push rod is fixedly sleeved with a limiting plate located above the rotating plate to limit the push rod, the inner wall of one of the rolling wheels is fixed with a plurality of connecting blocks, one side of the plurality of connecting blocks is fixed with a plurality of arc-shaped plates, and the arc-shaped plates are cooperatively used with the bottom end of the push rod to drive the push rod to move upwards, the inner wall of the sand mixing box is fixed with a plurality of fixed blocks, and the top of the plurality of fixed blocks and the bottom of the screen plate are fixed with a plurality of first tension springs; the first scraper drives the rotating shaft to rotate with the fixed column as the center, the first bevel gear and the second bevel gear are cooperatively used to drive the rolling wheel to rotate, and the rolling wheel drives the connecting blocks and the arc-shaped plates to rotate, the plurality of arc-shaped plates cooperatively drive the push rod to intermittently move upwards through the cooperation of the bottom end of the push rod, so that the screen plate can be driven to move upwards through the push rod to screen the raw materials on the screen plate.

[0016] The cam is fixed on the bottom of the lifting groove, and the cam is fixed on the top of the lifting groove, and the cam is fixed on the bottom of the lifting groove. The cam is slidably connected to the lifting groove, and the cam is slidably matched with the reciprocating thread groove on the outer wall of the reciprocating screw rod to drive the cam to move up and down. The bottom of the rotating plate is fixed with a hydraulic cylinder, and a piston plate is sealed and slidably connected to the hydraulic cylinder. A hydraulic rod is fixed on the side of the piston plate close to the reciprocating screw rod, and one end of the hydraulic rod slides and extends into the lifting groove and cooperates with the inclined surface of the trapezoidal block. The outer wall of the hydraulic rod is provided with a second tension spring, and the two ends of the second tension spring are respectively fixedly connected to one side of the piston plate and the inner wall of one side of the hydraulic cylinder to drive the piston plate to reset. One end of the pressure cylinder away from the hydraulic rod is fixedly connected with a hose, one end of the hose passes through the rotating plate and is fixedly extended into the driving rod, and the position where the hose is connected to the driving rod is located above the driving shaft, which is used to inject the hydraulic oil in the hydraulic cylinder into the driving rod to drive the driving rod to move upward. A debris discharge port is provided on one side of the sand mixing box, and the debris discharge port cooperates with the lower side of the screen plate to discharge impurities on the screen plate; when the rotating plate and the first scraper rotate, the rubber wheel touches the inner wall of the sand mixing box, and the friction between the rubber wheel and the sand mixing box drives the rubber wheel and the reciprocating screw to rotate, and the reciprocating screw drives the trapezoidal block to move back and forth. When the trapezoidal block rises to the top, the inclined surface of the trapezoidal block pushes the piston plate to move through the hydraulic rod, and the hydraulic oil is injected into the driving rod through the hose. The driving rod rises and pushes the screen plate up, thereby pushing the impurities screened by the screen plate upward until the impurities are automatically discharged to the outside through the debris discharge port.

[0017] In one possible design, an annular groove is provided on the bottom inner wall of the sand mixing box, and the bottom of the rolling wheel extends into the annular groove for effectively rolling the raw materials. The bottom of the sand mixing box is fixedly connected to a discharge pipe, and a solenoid valve is provided on the discharge pipe.

[0018] In a possible design, a second stirring blade is fixed on the side where the two first scrapers are close to each other, and multiple first stirring blades are fixed on the bottom of the protective tube. The second stirring blade and the first stirring blade are used to stir the raw materials while scraping the raw materials into the annular groove.

[0019] In a possible design, a plurality of connecting rods are fixed to the outer wall of the protective tube, a second scraper is fixed to the bottom of each of the connecting rods, and the second scraper extends into the annular groove to scrape out the crushed raw materials in the annular groove.

[0020] In a possible design, a plurality of holes are provided in each of the first stirring blade and the second stirring blade, so as to allow the raw materials to pass through the holes during stirring, thereby increasing the stirring and mixing effect.

[0021] In a possible design, the bottom of the fixed column is provided with a discharging hole, the bottom end of the discharging hole extends to the lower side of the sand mixing box, a collecting rod is slidably arranged in the fixed column, one end of the collecting rod extends to the discharging hole and is fixed with a spring, one end of the spring is fixedly connected with the inner wall of the discharging hole, the inner wall of the discharging hole is fixed with an electromagnet, the bottom of the collecting rod is fixed with an iron block which is magnetically connected with the electromagnet, the collecting rod is provided with a material guiding chute, which is used for discharging the raw materials in the sand mixing box to the discharging hole, the end of the collecting rod away from the spring is fixed with a round head, the round head is matched with the first stirring blade, and the first stirring blade is used for extruding the collecting rod into the fixed column; the electromagnet releases the magnetic attraction force on the iron block, the collecting rod extends to one side of the fixed column under the elastic force of the spring, at this time, the raw materials in the sand mixing box are discharged to the discharging hole through the material guiding chute and are discharged to the lower side of the sand mixing box through the discharging hole, and just fall on the bearing disc placed in advance below the sand mixing box, so that the collection is completed and the later detection is facilitated, the protective cylinder drives the first stirring blade to rotate, the first stirring blade is matched with the round head, and the collecting rod is extruded into the fixed column, so that the collecting rod can intermittently discharge the raw material samples.

[0022] In the present application, a method for using a high-efficiency sand mixing device for pipe production comprises the following steps:

[0023] S1, raw material discharging and preliminary screening: the raw materials are placed on the sieve plate, the driving motor drives the driving shaft to rotate, the driving rod drives the rotating plate and the first scraper to rotate, the first scraper drives the rotating shaft to rotate, the bevel gear drives the rolling wheel to rotate, the arc-shaped plate and the push rod are driven to move upward, the push rod pushes the sieve plate to move upward to screen the raw materials, and the screened raw materials fall into the sand mixing box.

[0024] S2, raw material crushing and mixing: the rolling wheel extends to the annular groove under the action of the first scraper, the first bevel gear and the second bevel gear cooperate to move the rolling wheel and crush the raw materials, the first scraper drives the second scraper to discharge the crushed raw materials, and drives the second stirring blade to rotate at the same time, the protective cylinder drives the first stirring blade to rotate, the raw materials are stirred and scraped to the annular groove, and the rolling wheel stirs the raw materials in the vertical direction through the connecting plate to increase the mixing effect.

[0025] S3, impurity discharging: when the rotating plate and the first scraper rotate, the rubber wheel rubs against the inner wall of the sand mixing box to drive the reciprocating screw rod to rotate, the trapezoidal block moves up and down, and when it moves up, the hydraulic rod and the piston plate are pushed to inject hydraulic oil into the driving rod, the driving rod moves upward to push the sieve plate to move upward, and the impurities are pushed to the impurity discharging port for discharging.

[0026] S4, raw material sample collection and detection: the electromagnet is de-energized, the collecting rod extends under the action of the spring, the raw materials are discharged to the bearing disc below the sand mixing box through the material guiding chute and the discharging hole, the protective cylinder drives the first stirring blade to rotate, and the collecting rod is matched with the first stirring blade to intermittently discharge the raw material samples.

[0027] Beneficial effects: in the present application, the outer wall of the fixed column is provided with a second bevel gear, two first scrapers are rotatably connected with shafts on one side close to each other, the ends of the two shafts close to each other are fixed with first bevel gears, and the outer walls of the two shafts are fixedly connected with the inner wall of the rolling wheel through connecting columns and connecting plates; the rotating plate and the first scraper are driven by the driving motor to rotate with the fixed column as the center, the rolling wheel rotates under the action of the first bevel gear and the protection cylinder, and then the raw materials falling into the annular groove can be crushed into smaller particles, the raw materials can be fully mixed and uniform in the later stage, and the connecting plate and the rolling wheel can also stir and mix the raw materials in the vertical direction when rotating, thereby improving the sand mixing effect;

[0028] In the present application, the rotating plate is slidably penetrated by a push rod, the inner wall of one of the rolling wheels is fixed with a plurality of connecting blocks, and the side of the connecting block is fixed with an arc plate; the first scraper drives the shaft to rotate with the fixed column as the center, the rolling wheel is driven to rotate by the cooperation of the first bevel gear and the second bevel gear, and the rolling wheel drives the connecting block and the arc plate to rotate; the cooperation of the plurality of arc plates and the bottom end of the push rod drives the push rod to move intermittently upward, and then the push rod can drive the sieve plate to move upward, thereby the raw materials on the sieve plate can be screened;

[0029] In the present application, the reciprocating screw rod is rotatably connected in the lifting groove, the top end of the reciprocating screw rod is fixed with a rubber wheel, the lifting groove is slidably connected with a trapezoidal block matched with the reciprocating screw rod, the hydraulic cylinder is slidably connected with a piston plate matched with the trapezoidal block, the side of the piston plate is fixed with a hydraulic rod matched with the trapezoidal block, and the hydraulic cylinder is communicated with the driving rod through a hose; when the rotating plate and the first scraper rotate, the friction between the rubber wheel and the sand mixing box drives the rubber wheel and the reciprocating screw rod to rotate, drives the trapezoidal block to move up and down reciprocatingly, and drives the piston plate to move, so that the hydraulic oil is injected into the driving rod through the hose, thereby the impurities screened by the sieve plate can be pushed upward until the impurities are automatically discharged to the outside through the impurity discharge port;

[0030] In the present application, the rolling wheel and the connecting plate revolve around the fixed column while rotating, which not only rolls the raw materials, but also facilitates the mixing of the raw materials in the later stage, and the cooperation of the rolling wheel, the first stirring blade and the second stirring blade stirs the raw materials from multiple directions, further improves the sand mixing effect, and automatically completes the screening of the raw materials by the trapezoidal block during the sand mixing process, and also automatically discharges the screened impurities to the outside. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a three-dimensional structure schematic view of a high-efficiency sand mixing device for pipe production provided by embodiment 1 of the present application;

[0032] Figure 2A three-dimensional cross-sectional structure schematic view of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0033] Figure 3 A three-dimensional cross-sectional structure schematic view of a sand mixing box of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0034] Figure 4 A three-dimensional structure schematic view of a fixed column, a rolling wheel and a first scraper of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0035] Figure 5 A three-dimensional explosion structure schematic view of a rotating plate, a first scraper and a fixed column of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0036] Figure 6 A three-dimensional cross-sectional explosion structure schematic view of a rolling wheel, a connecting plate and a protection cylinder of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0037] Figure 7 A three-dimensional cross-sectional structure schematic view of a sieve plate, a push rod and a rolling wheel of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0038] Figure 8 A three-dimensional explosion structure schematic view of a push rod and a connecting block of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0039] Figure 9 A three-dimensional cross-sectional structure schematic view of a rotating plate, a first scraper and a driving rod of a high-efficiency sand mixing device for pipe production provided by the embodiment 1 of the present application;

[0040] Figure 10 A three-dimensional cross-sectional structure schematic view of a sand mixing box and a fixed column of a high-efficiency sand mixing device for pipe production provided by the embodiment 2 of the present application;

[0041] Figure 11 A three-dimensional cross-sectional structure schematic view of a sand mixing box and a fixed column of a high-efficiency sand mixing device for pipe production provided by the embodiment 2 of the present application; Figure 10 A three-dimensional cross-sectional structure schematic view of a sand mixing box and a fixed column of a high-efficiency sand mixing device for pipe production provided by the embodiment 2 of the present application;

[0042] Figure 12 A three-dimensional cross-sectional structure schematic view of a sand mixing box and a fixed column of a high-efficiency sand mixing device for pipe production provided by the embodiment 2 of the present application;

[0043] In the figure: 1, sand mixing box; 2, fixed column; 3, driving motor; 4, driving shaft; 5, driving rod; 6, rotating plate; 7, first scraper; 8, rotating shaft; 9, connecting column; 10, connecting plate; 11, rolling wheel; 12, first bevel gear; 13, protective cylinder; 14, second bevel gear; 15, annular groove; 16, first stirring blade; 17, second stirring blade; 18, hole; 19, connecting rod; 20, second scraper; 21, sieve plate; 22, fixed block; 23, first tension spring; 24, push rod; 25, limiting plate; 26, connecting block; 27, arc plate; 28, lifting groove; 29, reciprocating screw rod; 30, rubber wheel; 31, trapezoidal block; 32, hydraulic cylinder; 33, piston plate; 34, hydraulic rod; 35, second tension spring; 36, hose; 37, discharge pipe; 38, discharge hole; 39, collection rod; 40, spring; 41, electromagnet; 42, iron block; 43, material guide chute; 44, impurity discharge port. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0045] Embodiment 1: Refer to Figures 1-3 The sand mixing device relates to the technical field of sand mixers and mainly comprises a sand mixing box 1. A fixed column 2 is fixedly installed on the inner wall of the bottom of the sand mixing box 1. The top end of the fixed column 2 is provided with a driving rod 5, and the driving rod 5 can stably rotate in the fixed column 2. A rotating plate 6 is slidably sleeved on the outer wall of the driving rod 5, and the rotating plate 6 can also freely rotate in the sand mixing box 1. In order to enhance the sand mixing effect, first scrapers 7 are fixed on the bottom of the rotating plate 6 on both sides, and the main function of the first scrapers 7 is to scrape off the raw materials adhered to the inner wall of the sand mixing box 1, so as to prevent the waste and caking of the raw materials.

[0046] Refer to Figure 2 Two rolling wheels 11 are also arranged in the device, and the rolling wheels 11 can be integrally cast by high-chromium cast iron and treated by an isothermal quenching process. A composite wear-resistant surface is formed on the surface layer by laser cladding tungsten carbide coating. The rolling wheels 11 are located below the rotating plate 6. In order to further screen the raw materials, a sieve plate 21 is slidably connected in the sand mixing box 1, and the sieve plate 21 is located above the driving rod 5 and is inclined to facilitate the screening and flow of the raw materials.

[0047] Refer to Figures 4-6, the mixed structure mainly includes a driving motor 3 fixed in the fixed column 2, and the output shaft of the driving motor 3 is fixedly connected with a driving shaft 4. The top end of the driving shaft 4 is sealingly and slidingly extended into the driving rod 5, so as to drive the rotation of the driving rod 5 and the rotating plate 6. On the outer wall of the fixed column 2, a second bevel gear 14 is fixedly sleeved, and a protection cylinder 13 is rotatably sleeved outside the second bevel gear 14 to protect the second bevel gear 14. Two first scrapers 7 are rotatably connected with a rotating shaft 8 on the side close to each other, one end of the rotating shaft 8 is rotatably extended into the protection cylinder 13, and the first bevel gear 12 engaged with the second bevel gear 14 is fixed. When the first scraper 7 rotates, the rotating shaft 8 and the first bevel gear 12 will be driven to rotate, and due to the engagement relationship between the first bevel gear 12 and the second bevel gear 14, the rotating shaft 8 will also rotate at the same time. In order to drive the rotation of the rolling wheel 11, the connecting column 9 is fixedly sleeved on the outer wall of the rotating shaft 8, and a plurality of connecting plates 10 are fixed on the outer wall of the connecting column 9, and the other end of the connecting plate 10 is fixedly connected with the inner wall of the rolling wheel 11. Therefore, when the rotating shaft 8 rotates, the rolling wheel 11 will be driven to rotate through the connecting column 9 and the connecting plate 10, so as to roll and mix the raw materials.

[0048] With reference to Figure 2 and Figure 3 , the bottom inner wall of the sand mixing box 1 is provided with an annular groove 15. The bottom of the rolling wheel 11 extends into the annular groove 15 to effectively roll the raw materials. The bottom of the sand mixing box 1 is also fixedly connected with a discharge pipe 37, and the discharge pipe 37 is provided with an electromagnetic valve for controlling the discharge of the raw materials.

[0049] With reference to Figure 3 and Figure 5 , the second stirring blade 17 is fixed on the side close to each other of the two first scrapers 7. The bottom of the protection cylinder 13 is fixedly connected with a plurality of first stirring blades 16. When the first scraper 7 and the protection cylinder 13 rotate, the cooperation of the second stirring blade 17 and the first stirring blade 16 not only serves to stir the raw materials, but also can scrape the raw materials into the annular groove 15 for rolling by the rolling wheel 11.

[0050] With reference to Figures 3-5 , the protection cylinder 13 is a key component, and a plurality of connecting rods 19 are fixed on the outer wall of the protection cylinder 13. The bottom of the connecting rod 19 is fixedly connected with a second scraper 20, and the second scraper 20 extends into the annular groove 15. During the stirring process, after the raw materials pass through the annular groove 15 and are rolled, the second scraper 20 can effectively scrape the raw materials out, so as to ensure that there is no raw materials remaining in the annular groove 15, thereby ensuring the uniformity and efficiency of the stirring.

[0051] With reference to Figure 5In order to enhance the stirring effect, a plurality of holes 18 are arranged in the first stirring blade 16 and the second stirring blade 17. The holes 18 allow the raw materials to pass through during the stirring process, so that the mixing between the raw materials is more sufficient, and the stirring and mixing effect is increased.

[0052] With reference to Figure 2 , Figure 7 and Figure 8 , the screening structure comprises a push rod 24 sliding through the rotating plate 6, and the top end of the push rod 24 is matched with the sieve plate 21 for driving the upward movement of the sieve plate 21. In order to limit the push rod 24, a limiting plate 25 located above the rotating plate 6 is fixed on the outer wall of the push rod 24. Meanwhile, the inner wall of one of the rolling wheels 11 is fixed with a plurality of connecting blocks 26, and one side of each of the connecting blocks 26 is fixed with an arc-shaped plate 27, which is matched with the bottom end of the push rod 24 for driving the upward movement of the push rod 24 when the rolling wheel 11 rotates. In order to ensure the stability and reset ability of the sieve plate 21, a plurality of fixed blocks 22 are fixed on the inner wall of the sand mixing box 1, and the top of each of the fixed blocks 22 is fixed with a first tension spring 23 between the bottom of the sieve plate 21.

[0053] Specifically, when the rolling wheel 11 rotates, the connecting block 26 and the arc-shaped plate 27 are driven to rotate, and when the arc-shaped plate 27 rotates to contact the bottom end of the push rod 24, the arc-shaped plate 27 drives the upward movement of the push rod 24, and then drives the upward movement of the sieve plate 21 through the push rod 24, so as to screen the raw materials on the sieve plate 21. When the arc-shaped plate 27 moves away from the push rod 24, the sieve plate 21 is reset under the action of the first tension spring 23.

[0054] With reference to Figure 4 and Figure 9, and the impurity discharge structure is arranged in one of the first scrapers 7. When the accumulated impurities reach a certain degree, the sieve plate 21 can be moved upward by the pushing of the driving rod 5, so as to discharge the impurities to the outside. The impurity discharge structure is as follows: a lifting groove 28 is arranged in one of the first scrapers 7. The inner wall of the bottom of the lifting groove 28 is rotatably connected with a reciprocating screw rod 29 through a bearing. The top end of the reciprocating screw rod 29 is rotatably penetrated through the rotating plate 6 and is fixed with a rubber wheel 30 at the top end. The rubber wheel 30 is made of HNBR material and is molded. The contact surface between the rubber wheel 30 and the inner wall of the sand mixing box 1 is designed as a sawtooth-shaped groove, and the friction coefficient is 0.6-0.9. The outer wall of the rubber wheel 30 is in contact with the inner wall of the sand mixing box 1. When the rotating plate 6 and the first scraper 7 rotate, the rubber wheel 30 will generate friction with the inner wall of the sand mixing box 1. The friction will drive the rubber wheel 30 and the reciprocating screw rod 29 fixed therewith to rotate. In the lifting groove 28, a trapezoidal block 31 is slidably connected. The inner wall of the trapezoidal block 31 is provided with a thread matched with the reciprocating screw groove on the outer wall of the reciprocating screw rod 29. Therefore, when the reciprocating screw rod 29 rotates, the trapezoidal block 31 will be driven to move up and down in the lifting groove 28. The bottom of the rotating plate 6 is fixed with a hydraulic cylinder 32. The hydraulic cylinder 32 is slidably connected with a piston plate 33. The side of the piston plate 33 close to the reciprocating screw rod 29 is fixed with a hydraulic rod 34. One end of the hydraulic rod 34 extends into the lifting groove 28 and cooperates with the inclined surface of the trapezoidal block 31. When the trapezoidal block 31 rises to the top, the inclined surface will push the hydraulic rod 34, thereby driving the piston plate 33 to move in the hydraulic cylinder 32. The outer wall of the hydraulic rod 34 is sleeved with a second tension spring 35. The two ends of the second tension spring 35 are fixedly connected with one side of the piston plate 33 and one side of the inner wall of the hydraulic cylinder 32 respectively. When the trapezoidal block 31 descends, the second tension spring 35 will drive the piston plate 33 to reset. The end of the hydraulic cylinder 32 away from the hydraulic rod 34 is fixedly connected with a hose 36 (which can be an ultra-high pressure steel wire braided hydraulic hose) through a flange. One end of the hose 36 penetrates through the rotating plate 6 and extends into the driving rod 5. The position where the hose 36 communicates with the driving rod 5 is located above the driving shaft 4. When the piston plate 33 moves in the hydraulic cylinder 32, the hydraulic oil in the hydraulic cylinder 32 will be injected into the driving rod 5 through the hose 36, thereby driving the driving rod 5 to move upward. The first tension spring 23, the second tension spring 35 and the spring 40 in the application can be made of 60Si2MnA spring steel wire, quenched and tempered and phosphated, and the permanent deformation rate under the ultimate load is less than 2%.

[0055] Referring to Figure 2 , one side of the sand mixing box 1 is provided with an impurity discharge port 44. The position of the impurity discharge port 44 cooperates with the lower side of the sieve plate 21, and is used for discharging the impurities screened on the sieve plate 21. When the driving rod 5 rises, the sieve plate 21 will be pushed to move upward, thereby pushing the impurities on the sieve plate 21 upward until the impurities are automatically discharged to the outside through the impurity discharge port 44.

[0056] Embodiment 2: Reference Figures 10-12 The bottom of the fixed column 2 is provided with discharge holes 38, the bottom ends of which extend to below the sand mixing box 1. A collection rod 39 is slidably arranged in the fixed column 2. One end of the collection rod 39 extends into the discharge hole 38 and is fixed with a spring 40 at this end. The other end of the spring 40 is fixedly connected with the inner wall of the discharge hole 38, thereby maintaining the stability of the collection rod 39 in the fixed column 2 while allowing it to move within a certain range. On the inner wall of the discharge hole 38, an electromagnet 41 is fixed. The bottom of the collection rod 39 is fixed with an iron block 42 which is magnetically connected with the electromagnet 41. When the electromagnet 41 is powered on, it will attract the iron block 42, thereby fixing the collection rod 39 at a certain position of the discharge hole 38. At this time, the material guide chute 43 in the collection rod 39 is used to guide the raw materials in the sand mixing box 1 into the discharge hole 38. The end of the collection rod 39 away from the spring 40 is fixed with a round head which cooperates with the first stirring blade 16. During the stirring process, when the first stirring blade 16 rotates to the position where it contacts the round head, it will press the collection rod 39 into the fixed column 2.

[0057] Specifically, the electromagnet 41 releases the magnetic attraction force on the iron block 42. Under the action of the elastic force of the spring 40, the collection rod 39 rapidly extends to one side of the fixed column 2. At this time, the raw materials in the sand mixing box 1 are discharged into the discharge hole 38 through the material guide chute 43 and are discharged below the sand mixing box 1 through the discharge hole 38. These raw materials will just fall on the previously placed bearing disc below the sand mixing box 1, thereby completing the collection of the raw material sample.

[0058] Through the above scheme, not only is it convenient for later detection and analysis, but also the automatic collection and intermittent discharge of the raw material sample are realized. When the protective cylinder 13 continues to rotate with the first stirring blade 16, the first stirring blade 16 will cooperate with the round head again to press the collection rod 39 into the fixed column 2. In this way, the collection rod 39 can intermittently discharge the raw material sample during the stirring process, ensuring the uniformity of the raw materials.

[0059] A method for using a high-efficiency sand mixing device for pipe production, comprising the following steps:

[0060] S1, the raw materials are discharged onto the sieve plate 21, the driving motor 3 drives the driving shaft 4 to rotate, the driving shaft 4 drives the rotating plate 6 and the first scraper 7 to rotate through the driving rod 5, the first scraper 7 drives the rotating shaft 8 to rotate with the fixed column 2 as the center, the grinding wheel 11 is driven to rotate through the cooperation of the first bevel gear 12 and the second bevel gear 14, and the grinding wheel 11 drives the connecting block 26 and the arc-shaped plate 27 to rotate, the multiple arc-shaped plates 27 cooperate with the bottom end of the push rod 24 to drive the push rod 24 to intermittently move upward, thereby the push rod 24 can drive the sieve plate 21 to move upward, thereby the raw materials on the sieve plate 21 can be screened, and the screened raw materials fall into the sand mixing box 1;

[0061] S2, when the raw materials need to be mixed, the rolling wheel 11 is extended into the annular groove 15 under the action of the rotating shaft 8 and the first scraper 7, and the cooperation of the first bevel gear 12 and the second bevel gear 14 can make the rolling wheel 11 rotate while moving in the annular groove 15, thereby the raw materials falling into the annular groove 15 can be crushed into smaller particles, and the raw materials can be fully mixed and uniform in the later stage, and the first scraper 7 rotates to drive the second scraper 20 to rotate through the first bevel gear 12, the second scraper 20 discharges the crushed raw materials in the annular groove 15 from the annular groove 15, and the rotation of the first scraper 7 and the protective cylinder 13 can also drive the second stirring blade 17 and the first stirring blade 16 to rotate, respectively, which can not only stir the raw materials but also scrape the raw materials in the mixing box 1 into the annular groove 15, facilitating the rolling of the raw materials by the rolling wheel 11, and when the rolling wheel 11 rotates, the raw materials can be stirred in the vertical direction through the connecting plate 10, further increasing the mixing effect;

[0062] S3, when the rotating plate 6 and the first scraper 7 rotate, the rubber wheel 30 touches the inner wall of the mixing box 1, and the friction between the rubber wheel 30 and the mixing box 1 drives the rubber wheel 30 and the reciprocating screw rod 29 to rotate, the reciprocating screw rod 29 drives the trapezoidal block 31 to move up and down reciprocally, when the trapezoidal block 31 rises to the top, the inclined surface of the trapezoidal block 31 pushes the piston plate 33 to move through the hydraulic rod 34, the hydraulic oil is injected into the driving rod 5 through the hose 36, the driving rod 5 rises to push the sieve plate 21 to move upwards, thereby the impurities screened by the sieve plate 21 can be pushed upwards, until the impurities are automatically discharged to the outside through the impurity discharge port 44;

[0063] S4, during the mixing process, the raw materials need to be detected, during the detection, the electromagnet 41 is de-energized to release the magnetic attraction force on the iron block 42, and the collecting rod 39 extends to one side of the fixed column 2 under the elastic force of the spring 40, at this time, the raw materials in the mixing box 1 are discharged into the discharge hole 38 through the material guide chute 43, and are discharged to the lower side of the mixing box 1 through the discharge hole 38, and fall on the bearing disc placed below the mixing box 1, completing the collection and facilitating the later detection, and the protective cylinder 13 drives the first stirring blade 16 to rotate, and the first stirring blade 16 cooperates with the round head at one end of the collecting rod 39 to extrude the collecting rod 39 into the fixed column 2, thereby the collecting rod 39 can intermittently discharge the raw material samples.

[0064] However, as known to those skilled in the art, the working principle and wiring method of the driving motor 3 and the electromagnet 41 are common, which belong to conventional means or common knowledge, and will not be described here, and those skilled in the art can make any selection according to their needs or convenience.

[0065] The drawings in the specification of the present application are only of a schematic nature, the size and shape of the components shown are not actual limitations, but only a schematic representation. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0066] The above description is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. An efficient sand mixing device for pipe fitting production, characterized in that: The invention comprises a sand mixing box, wherein a fixed column is fixed to the inner wall of the bottom of the sand mixing box, a driving rod is provided on the top of the fixed column, a rotating plate is provided on the outer wall of the driving rod, and the rotating plate rotates in the sand mixing box, and first scrapers are fixed on both sides of the bottom of the rotating plate for scraping off the raw materials attached to the inner wall of the sand mixing box; It also includes two rolling wheels, both of which are located below the rotating plate. A screen plate located above the driving rod is slidably connected in the sand mixing box, and the screen plate is placed at an angle. The mixing structure is arranged in the fixed column and the sand mixing box, and is used to drive the rolling wheel to roll and stir the raw materials; the mixing structure includes a driving motor fixed in the fixed column, the output shaft of the driving motor is fixed with a driving shaft, and the driving shaft drives the rotating plate and the first scraper to rotate through the driving rod, and the top end of the driving shaft is sealed and slidably extended into the driving rod, the outer wall fixed sleeve of the fixed column is provided with a second bevel gear, the outer wall rotating sleeve of the fixed column is provided with a protective cylinder, and the second bevel gear is located in the protective cylinder, and the two first scrapers are rotatably connected to each other on one side, and the two The ends of the rotating shafts that are close to each other are rotated and extended into the protective cylinder and are fixed with a first bevel gear, and the first bevel gear is meshed with the second bevel gear, and the cooperation of the first bevel gear and the second bevel gear drives the rotating shaft to rotate, and the outer walls of the two rotating shafts are fixedly sleeved with a connecting column, and the outer walls of the two connecting columns are fixed with a plurality of connecting plates, and the ends of the plurality of connecting plates away from the connecting columns are fixedly connected to the inner wall of the rolling wheel, and the rotating shaft is used to drive the rolling wheel to rotate to roll the raw material through the cooperation of the connecting column and the connecting plate, and the rotation of the rolling wheel is used to stir the raw material in a vertical direction; The screening structure is arranged in the rotating plate and one of the rolling wheels, and is used to drive the screen plate to move up and down to screen the raw materials; the screening structure includes a push rod that slides through the rotating plate, and the top of the push rod cooperates with the screen plate to drive the screen plate to move up, and the outer wall fixed sleeve of the push rod is provided with a limit plate located above the rotating plate to limit the push rod, and the inner wall of one of the rolling wheels is fixed with a plurality of connecting blocks, and one side of the plurality of connecting blocks is fixed with an arc plate, and the arc plate cooperates with the bottom end of the push rod to drive the push rod to move up, and the inner wall of the sand mixing box is fixed with a plurality of fixing blocks, and a first tension spring is fixed between the top of the plurality of fixing blocks and the bottom of the screen plate; The impurity discharge structure is arranged in one of the first scrapers, and is used to enable the driving rod to push the screen plate upward to discharge the impurities to the outside; the impurity discharge structure includes a lifting groove arranged in one of the first scrapers, and the bottom inner wall of the lifting groove is rotatably connected to a reciprocating screw rod, the top end of the reciprocating screw rod rotates and penetrates the rotating plate and is fixed with a rubber wheel, and the rubber wheel touches the inner wall of the sand mixing box, and a trapezoidal block is slidably connected in the lifting groove, and the trapezoidal block slides with the reciprocating thread groove on the outer wall of the reciprocating screw rod to drive the trapezoidal block to reciprocate up and down, and a hydraulic cylinder is fixed to the bottom of the rotating plate, and a piston plate is sealingly and slidably connected in the hydraulic cylinder, and a piston plate is fixed on the side of the piston plate close to the reciprocating screw rod. The camming mechanism that the camming engine of described hydraulic cylinder and hydraulic cylinder are connected respectively is used for the said camming engine of described hydraulic cylinder.

2. The high-efficiency sand mixing device for pipe fitting production according to claim 1, characterized in that: The bottom inner wall of the sand mixing box is provided with an annular groove, and the bottom of the rolling wheel extends into the annular groove for effectively rolling the raw materials. The bottom of the sand mixing box is fixedly connected to a discharge pipe, and the discharge pipe is provided with a solenoid valve.

3. The high-efficiency sand mixing device for pipe fitting production according to claim 2, characterized in that: A second stirring blade is fixed on the side where the two first scrapers are close to each other, and multiple first stirring blades are fixed on the bottom of the protective tube. The second stirring blades cooperate with the first stirring blades to stir the raw materials while scraping the raw materials into the annular groove.

4. The high-efficiency sand mixing device for pipe production according to claim 3, characterized in that: A plurality of connecting rods are fixed to the outer wall of the protective tube, and a second scraper is fixed to the bottom of each of the connecting rods. The second scraper extends into the annular groove and is used to scrape out the crushed raw materials in the annular groove.

5. The high-efficiency sand mixing device for pipe production according to claim 4, characterized in that: The first stirring blade and the second stirring blade are both provided with a plurality of holes for allowing the raw materials to pass through the holes during stirring, thereby increasing the stirring and mixing effect.

6. The high-efficiency sand mixing device for pipe production according to claim 5, characterized in that: The bottom of the fixed column is provided with a discharge hole, and the bottom end of the discharge hole extends to the bottom of the sand mixing box. A collecting rod is slidably passed through the fixed column, one end of the collecting rod extends into the discharge hole and is fixed with a spring, and one end of the spring is fixedly connected to the inner wall of the discharge hole, an electromagnet is fixed to the inner wall of the discharge hole, and an iron block magnetically connected to the electromagnet is fixed to the bottom of the collecting rod. A material guide chute is provided in the collecting rod for discharging the raw materials in the sand mixing box into the discharge hole, and a round head is fixed to the end of the collecting rod away from the spring, and the round head cooperates with the first stirring blade to enable the first stirring blade to squeeze the collecting rod into the fixed column.

7. A method for using the high-efficiency sand mixing device for pipe production according to claim 6, characterized in that: The following steps are involved: S1. Raw material discharge and preliminary screening: The raw materials are placed on the screen plate, and the driving motor drives the driving shaft to rotate, which drives the rotating plate and the first scraper to rotate through the driving rod. The first scraper drives the rotating shaft to rotate, and the first bevel gear and the second bevel gear cooperate to drive the rolling wheel to rotate, which drives the curved plate and the push rod to move upward. The push rod pushes the screen plate upward to screen the raw materials. After screening, the raw materials fall into the sand mixing box; S2. Crushing and mixing raw materials: The crushing wheel extends to the annular groove under the action of the first scraper. The first bevel gear and the second bevel gear cooperate to move and rotate the crushing wheel to crush the raw materials. The first scraper drives the second scraper to discharge the crushed raw materials and simultaneously drives the second stirring blade to rotate. The protective cylinder drives the first stirring blade to rotate, stirring and scraping the raw materials into the annular groove. The crushing wheel stirs the raw materials in the vertical direction through the connecting plate to enhance the mixing effect. S3. Impurity discharge: When the rotating plate and the first scraper rotate, the friction between the rubber wheel and the inner wall of the sand mixing box drives the reciprocating screw to rotate, and the trapezoidal block moves up and down. When it rises, it pushes the hydraulic rod and the piston plate, and the hydraulic oil is injected into the driving rod. The driving rod rises and pushes the screen plate upward, pushing the impurities to the impurity discharge port for discharge; S4. Raw material sample collection and testing: The electromagnet is powered off, and the collecting rod extends under the action of the spring. The raw materials are discharged to the carrying plate below the sand mixing box through the material guide chute and the discharge hole. The protective tube drives the first stirring blade to rotate, cooperating with the collecting rod to make it intermittently discharge raw material samples.

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