Continuous sand blasting equipment for water pump casting

Abstract

The invention relates to the technical field of water pump casting sand blasting, and discloses continuous sand blasting equipment for a water pump casting. According to the continuous sand blasting equipment for the water pump casting, a rotating disc can be driven by means of a first motor to achieve continuous conveying and sand blasting operation of the water pump casting, the machining efficiency is improved, and the batch treatment requirement is met; scrap iron in sand can be efficiently separated and recycled through the rotating electromagnet rod, unqualified fine particles are filtered in combination with the reciprocating screen frame, multi-dimensional purification of the sand is achieved, the scrap iron is prevented from scratching the surface of a casting, the sand blasting effect is prevented from being affected by uneven sand particles, and it is guaranteed that the sand blasting quality is stable. Meanwhile, the removed scrap iron and unqualified particles can reduce abrasion to core components such as a sand blasting machine body and a pipeline, the fault probability is reduced, the service life of equipment is prolonged, the maintenance and operation cost is reduced, purified sand can be recycled, the purchase amount of new sand is reduced, and the scrap iron can be recycled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pump casting sand blasting, in particular to a continuous sand blasting equipment for water pump casting. BACKGROUND

[0002] Water pump casting is a key component of water pump made by casting process, covering pump body, pump cover, impeller, pump shaft sleeve and other core components. Iron material is the most widely used water pump casting material, which is low in cost and has good shock absorption and wear resistance. During the production of the water pump casting, defects such as oxide skin, sand sticking and burr are easily formed on the surface, so surface treatment process must be used to remove them. At present, sand blasting treatment has become the mainstream technology for water pump casting surface treatment because of its high efficiency, good defect removal effect and the ability to improve the surface roughness of the casting. However, the existing water pump casting sand blasting equipment still has some defects, such as: The sand blasting machine for water pump casting with continuous type of application No. CN202322685036.5 directly uses the collected sand again. The recycled sand often contains iron filings generated during sand blasting, and the sand itself may also generate sand particles that do not meet the use requirements due to wear. Directly reusing sand containing iron filings and unqualified particles will lead to a decrease in sand blasting effect, which not only cannot effectively remove the surface defects of the water pump casting, but also may cause additional scratches on the surface of the casting. In addition, iron filings will accelerate the wear of equipment parts, shorten the service life of the sand blasting equipment, and increase the maintenance cost of the equipment. In view of this, in view of the above problems, after in-depth research, a continuous sand blasting equipment for water pump casting is proposed. SUMMARY

[0003] The purpose of the present application is to provide a continuous sand blasting equipment for water pump casting to solve the problems of poor sand blasting effect, easy scratching of the surface of the casting, short service life of the equipment and high maintenance cost caused by the lack of effective treatment of the recycled sand directly reused by the existing sand blasting equipment.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a continuous sand blasting equipment for water pump casting, comprising a bottom plate; The top surface of the bottom plate is fixedly installed with a rack at the right end, and the inner bottom surface of the rack is fixedly installed with a first motor. The shaft end of the first motor is key-connected with a rotating rod, and the shaft end of the rotating rod is fixedly installed with a connecting frame. The outer end of the connecting frame is fixedly installed with a rotating piece disc. The top surface of the bottom plate is installed with a sand box at the left end, and the right side wall of the sand box is fixedly provided with a feeding hopper at the upper end. The top surface of the bottom plate is provided with a sand blasting machine body, and the feeding end of the sand blasting machine body is connected with the bottom of the sand box through a sand suction pipe. The discharging end of the sand blasting machine body is connected with a sand blasting pipe. The top surface of the sand box is slidably connected with a sliding plate along the length direction thereof. The top surface of the bottom plate is provided with a magnetic separation mechanism for impurity separation, the top surface of the sand box is provided with a driving mechanism for reciprocating movement of the slide plate, the left side of the slide plate is connected with a stirring mechanism for sand stirring, and the right side of the slide plate is connected with a screening mechanism for sand screening.

[0005] By adopting the technical scheme, continuous sand blasting of the water pump casting can be realized, and recycling and purification of the sand are completed through cooperation of the magnetic separation, screening and stirring mechanisms, so that sand blasting efficiency and quality are improved, equipment wear is reduced, and maintenance cost is lowered.

[0006] As a preferred technical scheme of the present application, the magnetic separation mechanism comprises a box body, the bottom surface of the box body is fixedly installed on the top surface of the bottom plate through a support column, a feeding pipe is fixedly and penetratingly arranged on the top surface of the box body, a rotating column is longitudinally and penetratingly arranged at the center of the top surface of the box body, the rotating column is connected with the top of the box body through a bearing, a plurality of electromagnet rods are uniformly installed on the surface of the rotating column, an electric core is arranged in the rotating column, the electric core is electrically connected with electromagnets arranged in the electromagnet rods, the electric core extends above the rotating column, the top end of the electric core is connected with an external power supply line through an electric slip ring, a discharging pipe is fixedly and penetratingly arranged at the bottom center of the box body, a sand discharging pipe is fixedly connected to the lower end of the left side wall of the discharging pipe, and a chip discharging pipe is fixedly connected to the lower end of the right side wall of the discharging pipe, and an electromagnetic valve is arranged on each of the feeding pipe, the sand discharging pipe and the chip discharging pipe.

[0007] By adopting the technical scheme, iron scraps and sand in the sand can be separated and recovered, the electromagnet rods are powered by the electric core to generate magnetism, and the rotating column drives the electromagnet rods to rotate and stir, so that the iron scraps in the sand can be fully adsorbed, the timing of feeding, sand discharging and chip discharging is controlled by the electromagnetic valve, the iron scraps are discharged alone, the castings are prevented from being scratched or the equipment wear is prevented from being aggravated due to the iron scraps circulating with the sand, and the purity of the sand and the service life of the equipment are ensured.

[0008] As a preferred technical scheme of the present application, a sand receiving hopper is arranged between the rotating disc and the box body, the sand receiving hopper is fixedly installed on the inner side surface of the rack through a straight rod, and the top end of the feeding pipe is fixedly and communicatively connected with the bottom center of the sand receiving hopper.

[0009] By adopting the technical scheme, the sand receiving hopper can receive the scattered sand during the sand blasting process, sand waste is avoided, the design that the sand receiving hopper is communicatively connected with the feeding pipe can ensure that the recovered sand stably enters the box body for magnetic separation treatment, and the continuity of the sand recovery process is ensured.

[0010] As a preferred technical scheme of the present application, the driving mechanism comprises a second motor, the second motor is fixedly installed on the top surface of the sand tank, and the shaft end of the second motor is key-connected with a driving rod, the surface of the driving rod is fixedly sleeved with an eccentric wheel, the surface of the eccentric wheel is sleeved with a movable ring, the eccentric wheel and the movable ring are connected through a bearing, and the surface of the movable ring is fixedly connected with one end of a connecting rod, and the other end of the connecting rod is hingedly connected with the sliding plate.

[0011] The above technical scheme can conveniently provide stable reciprocating driving force for the sliding plate, the driving rod and the eccentric wheel are driven to rotate by the second motor, the eccentric characteristic of the eccentric wheel is utilized, and the rotating motion is converted into linear reciprocating motion of the sliding plate through the movable ring and the connecting rod.

[0012] As a preferred technical scheme of the present application, the stirring mechanism comprises a stirring shaft, the stirring shaft longitudinally penetrates the top of the sand tank, and the stirring shaft and the top of the sand tank are connected through a bearing, and a plurality of stirring shafts are equidistantly and uniformly arranged along the length direction of the sand tank, the bottom end of the stirring shaft is fixedly installed with a stirring frame, and the top end of the stirring shaft is coaxially fixedly installed with a gear, and the gear is meshingly connected with a rack slidingly connected to the top surface of the sand tank, and the rack is fixedly installed on the left side surface of the sliding plate.

[0013] The above technical scheme can conveniently drive the rack to move synchronously when the sliding plate moves reciprocally, the rack drives a plurality of stirring shafts to rotate through meshing with the gear, and then drives the stirring frame to uniformly stir the sand in the sand tank, so that the sand is prevented from being caked and blocked in the sand suction pipe due to static placement, the sand blasting machine body can continuously and stably obtain sand, and the sand blasting operation efficiency is maintained.

[0014] As a preferred technical scheme of the present application, the screening mechanism comprises a mounting frame, the mounting frame is fixedly installed on the right side surface of the sliding plate, and the end of the mounting frame is fixedly installed with a screen frame, the screen frame is obliquely arranged with the left end being lower than the right end, and the left end of the screen frame extends into the feeding hopper.

[0015] The above technical scheme can conveniently separate and recycle qualified particles from unqualified small particles in the sand, the screen frame realizes the screening action by reciprocally moving with the sliding plate, the oblique design with the left end being lower than the right end can guide the qualified sand to slide along the screen surface to the feeding hopper and re-enter the sand tank for recycling, and the unqualified small particles are dropped and collected through the screen gap, so that the quality of the recycled sand is further improved, and the sand blasting effect is stabilized.

[0016] As a preferred technical scheme of the present application, the rotating column is drivingly connected with the top end of the driving rod through a belt transmission device.

[0017] The above technical scheme can conveniently transmit the power of the driving rod to the rotating column through the belt transmission device, so that the rotating column rotates.

[0018] As a preferred technical scheme of the present application, the surface of the driving rod is sleeved with a fixed plate, and the driving rod and the fixed plate are connected through a bearing, and the fixed plate is fixedly installed on the left side of the box body.

[0019] By adopting the above technical scheme, the installation stability and rotation smoothness of the driving rod can be improved.

[0020] As a preferred technical scheme of the present application, the bottom surface right end of the screen frame is fixedly installed with a supporting sliding rod, and the bottom surface of the supporting sliding rod is slidingly connected with the top surface of the bottom plate.

[0021] By adopting the above technical scheme, the stability of the reciprocating movement of the screen frame can be improved.

[0022] Compared with the prior art, the water pump casting continuous sand blasting equipment has the advantages that: the water pump casting can be continuously conveyed and sand blasted by the first motor driving the rotating disc, and the stable sand supply can greatly improve the processing efficiency and meet the batch processing demand; the iron filings in the recycled sand can be efficiently separated by the rotating electromagnet rod, and the unqualified fine particles can be filtered by the reciprocating screen frame, so that the sand is purified in multiple dimensions, the surface of the casting is prevented from being scratched by the iron filings, and the sand blasting effect is prevented from being affected by the uneven sand particles, so as to ensure the stability of the sand blasting quality; at the same time, the removed iron filings and unqualified particles can reduce the abrasion of the core components such as the sand blasting machine body and the pipeline, reduce the failure probability, prolong the service life of the equipment, reduce the maintenance and operation cost, and the purified sand can be recycled, the amount of new sand purchased is reduced, and the iron filings can be recycled and used; 1. The equipment can convey the water pump casting to be processed to the processing station below the sand blasting pipe in sequence by rotating the rotating rod, the connecting frame and the rotating disc driven by the first motor. During the sand blasting process, the operator can supplement the casting to be processed to the area of the rotating disc that is not in the processing station. After the sand blasting of the current casting is completed, the next casting to be processed can be sent to the station by rotating the rotating disc, without interrupting the equipment operation to wait for feeding, so that the continuous sand blasting processing of the water pump casting is realized, the interruption time during the operation is greatly reduced, and the processing efficiency is significantly improved compared with the traditional intermittent sand blasting equipment, which is especially suitable for batch production scenes; 2. The second motor drives the driving rod to rotate, and the sliding plate is driven to reciprocate by the eccentric wheel, the movable ring and the connecting rod, so that the rack is driven to reciprocate, the gear is driven to rotate the stirring rod and the stirring frame, the sand in the sand tank is uniformly stirred, and the sand is effectively prevented from being caked and blocked in the sand suction pipe due to static placement; 3. The driving rod is rotated to drive the rotating column to rotate by the belt transmission device, the rotating column drives the electromagnet rod to rotate, the electromagnet rod is powered by the battery to generate magnetism, the recycled sand is fully stirred to ensure that the iron filings in the sand are fully adsorbed, the iron filings in the recycled sand are efficiently separated, the surface of the water pump casting is prevented from being scratched by the iron filings when the sand is sprayed, and the abrasion of the components such as the sand blasting pipe and the sand suction pipe by the iron filings is avoided. 4. As the slide plate moves back and forth, the screen frame moves back and forth synchronously through the mounting frame. Qualified sand slides down the screen surface and returns to the sand box for recycling, while unqualified particles are collected and cleaned separately. This effectively avoids the difference in sandblasting force caused by uneven sand particle size, ensuring consistent removal of oxide scale, adhering sand, and burrs on the surface of castings, and improving the surface quality stability of batch castings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the right-side view of the present invention; Figure 2 This is a schematic diagram of the left side view of the present invention; Figure 3 This is a schematic diagram of the connection structure between the connecting frame, the rotating rod, and the rotating disc of the present invention; Figure 4 This is a schematic diagram of the connection structure between the sand box and the rack of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the sand box and feed hopper of the present invention; Figure 6 This is a schematic diagram of the connection structure between the eccentric wheel and the movable ring of the present invention; Figure 7 This is a schematic diagram of the sand box and stirring shaft structure of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the box body of the present invention; Figure 9 This is a schematic diagram of the connection structure between the belt drive device, the rotating rod, and the rotating column of the present invention; Figure 10 This is a schematic diagram of the mounting frame, sliding plate, and screen frame structure of the present invention.

[0024] In the diagram: 1. Base plate; 2. Frame; 3. First motor; 4. Rotating rod; 5. Connecting frame; 6. Rotating disc; 7. Sand box; 8. Feed hopper; 9. Sandblasting machine body; 10. Suction pipe; 11. Sandblasting pipe; 12. Slide plate; 13. Box body; 14. Feed pipe; 15. Rotating column; 16. Electromagnetic rod; 17. Battery core; 18. Electric slip ring; 19. Discharge pipe; 20. Sand discharge pipe; 21. Chip discharge pipe; 22. Sand receiving hopper; 23. Second motor; 24. Drive rod; 25. Eccentric wheel; 26. Movable ring; 27. Connecting rod; 28. Stirring shaft; 29. ​​Stirring frame; 30. Gear; 31. Rack; 32. Mounting frame; 33. Screen frame; 34. Belt drive device; 35. Fixing plate; 36. Support slide rod. Detailed Implementation

[0025] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0026] Please refer to Figure 1 Figure 10 The technical scheme of the present application is a continuous sand blasting equipment for water pump castings, which comprises a bottom plate 1, a controller for controlling each electrical equipment is arranged on the bottom plate 1, a rack 2 is fixedly installed at the top right end of the bottom plate 1, a first motor 3 is fixedly installed on the inner bottom surface of the rack 2, a rotating rod 4 is connected to the shaft end of the first motor 3 by keying, a connecting frame 5 is fixedly installed at the shaft end of the rotating rod 4, a rotating part disc 6 is fixedly installed at the outer end of the connecting frame 5, a sand tank 7 is installed at the top left end of the bottom plate 1, a feed hopper 8 is fixedly and continuously arranged at the right side wall of the sand tank 7, a sand blasting machine body 9 is arranged on the top surface of the bottom plate 1, the feed end of the sand blasting machine body 9 is connected to the bottom of the sand tank 7 through a sand suction pipe 10, the discharge end of the sand blasting machine body 9 is connected to a sand blasting pipe 11, the sand blasting end of the sand blasting pipe 11 is located above the rotating part disc 6, a sliding plate 12 is slidably connected to the top surface of the sand tank 7 along the length direction of the sand tank 7, a magnetic separation mechanism for impurity separation is arranged on the top surface of the bottom plate 1, a driving mechanism for reciprocating movement of the sliding plate 12 is arranged on the top surface of the sand tank 7, a stirring mechanism for sand stirring is connected to the left side of the sliding plate 12, and a screening mechanism for sand screening is connected to the right side of the sliding plate 12.

[0027] The magnetic separation mechanism comprises a tank body 13, the tank body 13 is fixedly installed on the top surface of the bottom plate 1 through a support column, an inlet pipe 14 is fixedly and continuously arranged on the top surface of the tank body 13, a rotating column 15 is longitudinally and continuously arranged at the center of the top surface of the tank body 13, the rotating column 15 is connected to the top of the tank body 13 through a bearing, a plurality of electromagnet rods 16 are uniformly arranged on the surface of the rotating column 15, an electric core 17 is arranged in the rotating column 15, the electric core 17 is electrically connected to the electromagnet arranged in the electromagnet rod 16, the electric core 17 extends above the rotating column 15, an electric slip ring 18 is connected to the external power supply line at the top end of the electric core 17, a discharge pipe 19 is fixedly and continuously arranged at the bottom center of the tank body 13, a sand discharge pipe 20 is fixedly and continuously arranged at the left side wall lower end of the discharge pipe 19, a chip discharge pipe 21 is fixedly and continuously arranged at the right side wall lower end of the discharge pipe 19, and an electromagnetic valve is arranged on each of the inlet pipe 14, the sand discharge pipe 20 and the chip discharge pipe 21.

[0028] A sand receiving hopper 22 is arranged between the rotating part disc 6 and the tank body 13, the sand receiving hopper 22 is fixedly installed on the inner side surface of the rack 2 through a straight rod, and the top end of the inlet pipe 14 is fixedly and continuously connected to the bottom center of the sand receiving hopper 22. ​

[0029] The driving mechanism comprises a second motor 23 fixedly installed on the top surface of the sand tank 7, and the shaft end of the second motor 23 is key-connected with a driving rod 24, the top end of the driving rod 24 is in transmission connection with the rotating column 15 through a belt transmission device 34, the surface of the driving rod 24 is sleeved with a fixed plate 35, the driving rod 24 is connected with the fixed plate 35 through a bearing, the fixed plate 35 is fixedly installed on the left side surface of the box body 13, the surface of the driving rod 24 is fixedly sleeved with an eccentric wheel 25, the surface of the eccentric wheel 25 is sleeved with a movable ring 26, the eccentric wheel 25 is connected with the movable ring 26 through a bearing, and the surface of the movable ring 26 is fixedly connected with one end of a connecting rod 27, and the other end of the connecting rod 27 is hingedly connected with the sliding plate 12.

[0030] The stirring mechanism comprises a stirring shaft 28 longitudinally penetrating through the top of the sand tank 7, and the stirring shaft 28 is connected with the top of the sand tank 7 through a bearing, and a plurality of stirring shafts 28 are uniformly arranged along the length direction of the sand tank 7, the bottom end of the stirring shaft 28 is fixedly installed with a stirring frame 29, and the top end of the stirring shaft 28 is coaxially fixedly installed with a gear 30, and the gear 30 is in meshing connection with a rack 31 slidingly connected to the top surface of the sand tank 7, and the rack 31 is fixedly installed on the left side surface of the sliding plate 12.

[0031] The screening mechanism comprises a mounting frame 32 fixedly installed on the right side surface of the sliding plate 12, and the end of the mounting frame 32 is fixedly installed with a screen frame 33, the screen frame 33 is arranged in a left-low and right-high inclined manner, the left end of the screen frame 33 extends into the feeding hopper 8, the bottom surface right end of the screen frame 33 is fixedly installed with a supporting sliding rod 36, the bottom surface of the supporting sliding rod 36 is in sliding connection with the top surface of the bottom plate 1, the discharging end of the sand discharging pipe 20 is located above the right end of the screen frame 33, and the top surface of the bottom plate 1 is placed with a receiving tank located below the screen frame 33.

[0032] Working principle: when in use, the water pump casting to be sand blasted is placed on the rotating disc 6, the first motor 3 is started, the first motor 3 drives the rotating rod 4 to rotate, the rotating rod 4 drives the rotating disc 6 to rotate synchronously through the connecting frame 5, so that the water pump casting is rotated to the machining station below the sand blasting end of the sand blasting pipe 11. The sand blasting machine body 9 is started, the sand blasting machine body 9 draws sand from the sand tank 7 through the sand suction pipe 10, the sand is pressurized by the sand blasting machine body 9 and then sprayed to the surface of the water pump casting through the sand blasting pipe 11, so as to realize the sand blasting treatment of the water pump casting, remove the defects such as oxide skin, sand sticking and burr on the surface of the water pump casting, and continue to load the water pump casting to be machined on the rotating disc 6 during the sand blasting process, the water pump casting in the machining station is machined, the first motor 3 is started again to rotate it, so that the next water pump casting to be machined is rotated to the machining station, so that continuous machining can be realized. During the sandblasting process, the second motor 23 is started, the second motor 23 drives the driving rod 24 to rotate, so that the driving rod 24 drives the eccentric wheel 25 to rotate, due to the eccentric setting of the eccentric wheel 25, the eccentric wheel 25 drives the sliding plate 12 to move back and forth along the top surface of the sand tank 7 through the movable ring 26 and the connecting rod 27; When the sliding plate 12 moves, the left side rack 31 moves back and forth, the rack 31 drives multiple stirring shafts 28 to rotate synchronously through the meshing action with the gear 30, the stirring shaft 28 drives the stirring frame 29 to rotate, the sand in the sand tank 7 is stirred to prevent the sand from caking, and the sand suction pipe 10 can smoothly extract the sand; At the same time, during the sandblasting process, the recovered sand (including sand, iron filings, and unqualified fine sand particles) falling from the rotating disc 6 falls into the sand receiving hopper 22, the electromagnetic valve on the inlet pipe 14 is opened, the recovered sand in the sand receiving hopper 22 enters the box 13 through the inlet pipe 14, and after a certain amount of sand is collected in the box 13, the electromagnetic valve on the inlet pipe 14 is closed, so that the recovered sand is temporarily stored in the sand receiving hopper 22; The driving rod 24 rotates to drive the rotating column 15 to rotate through the belt drive device 34, when the rotating column 15 rotates, the battery 17 is powered through an external wire to provide power for the electromagnet rod 16, so that the electromagnet rod 16 generates magnetism, the rotating electromagnet rod 16 can fully stir the recovered sand in the box 13, and at the same time, the iron filings in the recovered sand are adsorbed; After the iron filings are adsorbed, the electromagnetic valve on the sand discharge pipe 20 is opened, the sand (including qualified sand and unqualified fine sand particles) falls under the action of gravity to the discharge pipe 19 at the bottom of the box 13, and is discharged to the sieve frame 33 through the sand discharge pipe 20, after complete discharge, the electromagnetic valve on the sand discharge pipe 20 is closed, the electromagnetic valve on the iron discharge pipe 21 is opened, and the battery 17 is controlled to be powered off, the electromagnet rod 16 loses magnetism, the adsorbed iron filings fall into the discharge pipe 19, the iron filings are discharged through the iron discharge pipe 21, realizing the separation of iron filings and sand, after the iron filings are discharged, the electromagnetic valve on the iron discharge pipe 21 is closed, and the electromagnetic valve on the inlet pipe 14 is opened, so that the recovered sand enters the box 13 again; At the same time, the sliding plate 12 moves back and forth, driving the right side mounting frame 32 to move back and forth, the mounting frame 32 drives the sieve frame 33 to move back and forth synchronously, the sieve frame 33 moves stably under the support of the support sliding rod 36, after the sand discharged from the sand discharge pipe 20 falls on the sieve frame 33, through the reciprocating screening action of the sieve frame 33, the qualified sand particles remain on the sieve frame 33 and slide along the inclined surface of the sieve frame 33 to the feeding hopper 8, and finally enter the sand tank 7 to realize recycling, while the fine sand particles that do not meet the use requirements fall through the gap of the sieve frame 33 into the lower receiving tank, which can be cleaned regularly, realizing the separation of qualified sand and unqualified sand particles.

[0033] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A continuous sand blasting equipment for water pump casting, comprising a base plate (1), characterized in that: a rack (2) is fixedly installed at the right end of the top surface of the base plate (1), a first motor (3) is fixedly installed on the inner bottom surface of the rack (2), a rotating rod (4) is key-connected to the shaft end of the first motor (3), a connecting rack (5) is fixedly installed at the shaft end of the rotating rod (4), and a rotating part disc (6) is fixedly installed at the outer end of the connecting rack (5); a sand box (7) is installed at the left end of the top surface of the base plate (1), a feeding hopper (8) is fixedly and penetratively arranged at the upper end of the right side wall of the sand box (7), a sand blasting machine body (9) is arranged on the top surface of the base plate (1), the feeding end of the sand blasting machine body (9) is connected with the bottom of the sand box (7) through a sand suction pipe (10), the discharging end of the sand blasting machine body (9) is connected with a sand blasting pipe (11), and a sliding plate (12) is slidingly connected to the top surface of the sand box (7) along the length direction thereof; a magnetic separation mechanism for impurity separation is arranged on the top surface of the base plate (1), a driving mechanism for reciprocating movement of the sliding plate (12) is arranged on the top surface of the sand box (7), a stirring mechanism for sand stirring is connected to the left side of the sliding plate (12), and a screening mechanism for sand screening is connected to the right side of the sliding plate (12).

2. The continuous sand blasting apparatus for a water pump casting according to claim 1, wherein The magnetic separation mechanism comprises a box body (13) fixedly installed on the top surface of the base plate (1) through a support column, a feeding pipe (14) is fixedly and penetratively arranged on the top surface of the box body (13), a rotating column (15) is longitudinally and penetratively arranged at the center of the top surface of the box body (13) and connected with the top of the box body (13) through a bearing, a plurality of electromagnet rods (16) are uniformly installed on the surface of the rotating column (15), an electric core (17) is arranged in the rotating column (15), the electric core (17) is electrically connected with electromagnets arranged in the electromagnet rods (16), the electric core (17) extends above the rotating column (15), an electric slip ring (18) is connected between the top end of the electric core (17) and an external power supply line, a discharging pipe (19) is fixedly and penetratively arranged at the bottom center of the box body (13), a sand discharging pipe (20) is fixedly and connectedly arranged at the lower end of the left side wall of the discharging pipe (19), a chip discharging pipe (21) is fixedly and connectedly arranged at the lower end of the right side wall of the discharging pipe (19), and an electromagnetic valve is arranged on each of the feeding pipe (14), the sand discharging pipe (20) and the chip discharging pipe (21).

3. The continuous sand blasting apparatus for a water pump casting according to claim 2, wherein A sand receiving hopper (22) is arranged between the rotating part disc (6) and the box body (13), and the sand receiving hopper (22) is fixedly installed on the inner side surface of the rack (2) through a straight rod, the top end of the feeding pipe (14) is fixedly and communicatively connected with the bottom center of the sand receiving hopper (22).

4. The continuous sand blasting apparatus for a water pump casting according to claim 2, wherein The driving mechanism comprises a second motor (23), the second motor (23) is fixedly installed on the top surface of the sand tank (7), and the shaft end of the second motor (23) is key-connected with a driving rod (24), the surface of the driving rod (24) is fixedly sleeved with an eccentric wheel (25), the surface of the eccentric wheel (25) is sleeved with a movable ring (26), the eccentric wheel (25) and the movable ring (26) are connected through a bearing, the surface of the movable ring (26) is fixedly connected with one end of a connecting rod (27), and the other end of the connecting rod (27) is hingedly connected with the sliding plate (12).

5. The continuous sand blasting apparatus for a water pump casting according to claim 1, wherein The stirring mechanism comprises a stirring shaft (28), the stirring shaft (28) longitudinally penetrates the top of the sand tank (7), the stirring shaft (28) and the top of the sand tank (7) are connected through a bearing, and the stirring shaft (28) is uniformly provided with a plurality of stirring frames (29) along the length direction of the sand tank (7), the bottom end of the stirring shaft (28) is fixedly installed with a stirring frame (29), the top end of the stirring shaft (28) is coaxially fixedly installed with a gear (30), and the gear (30) is in meshing connection with a rack (31) slidingly connected to the top surface of the sand tank (7), the rack (31) is fixedly installed on the left side surface of the sliding plate (12).

6. The continuous sand blasting apparatus for a water pump casting according to claim 1, wherein The screening mechanism comprises a mounting frame (32), the mounting frame (32) is fixedly installed on the right side surface of the sliding plate (12), and the end of the mounting frame (32) is fixedly installed with a screen frame (33), the screen frame (33) is inclinedly arranged with the left end being lower than the right end, and the left end of the screen frame (33) extends into the feeding hopper (8).

7. The continuous sand blasting apparatus for a water pump casting according to claim 4, wherein The rotating column (15) is in driving connection with the top end of the driving rod (24) through a belt transmission device (34).

8. The continuous sand blasting apparatus for water pump casting according to claim 4, wherein The surface of the driving rod (24) is sleeved with a fixed plate (35), the driving rod (24) and the fixed plate (35) are connected through a bearing, and the fixed plate (35) is fixedly installed on the left side surface of the box body (13).

9. The continuous sand blasting apparatus for water pump casting according to claim 6, wherein The bottom surface right end of the screen frame (33) is fixedly installed with a supporting sliding rod (36), and the bottom surface of the supporting sliding rod (36) is in sliding connection with the top surface of the bottom plate (1).

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