Iron core surface sand blasting equipment

Abstract

The utility model discloses iron core surface sand blasting equipment which comprises a bottom frame, a sand blasting mechanism is arranged on the bottom frame, the sand blasting mechanism comprises a shell, a discharging plate, a supporting rod, a sand blasting head, a transmission mechanism, a sand box and a hose, the shell is installed on the bottom frame, the discharging plate is installed in the shell, the supporting rod is rotatably installed in the shell, and the transmission mechanism is installed in the sand box. The multiple sets of sand blasting heads are installed on the supporting rod, the transmission mechanism is arranged on the shell and connected with the supporting rod, the sand box is installed on the top face of the shell, the multiple sets of hoses are arranged and connected with the sand box and the sand blasting heads correspondingly, and the multiple sets of sand blasting heads are each provided with an adjusting mechanism. The adjusting mechanism comprises an outer sleeve, an adjusting sleeve, a connecting sleeve, a center rod, a flow control sleeve, a through-flow groove and a blocking sleeve, and the outer sleeve is installed at the bottom end of the hose so as to solve the technical problems that sand blasting in some areas is insufficient or excessive, and then the sand blasting strength and the sand flow are difficult to accurately control in the background technology.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer manufacturing, and more particularly to an iron core surface sandblasting device. Background Art

[0002] During transformer manufacturing, the quality of the core surface treatment directly affects the performance and life of the transformer. Traditional core surface sandblasting equipment usually uses a fixed sandblasting head. This design has several disadvantages. First, it is difficult for the fixed sandblasting head to achieve a comprehensive and uniform sandblasting effect, which can easily cause insufficient or excessive sandblasting in certain areas. Second, the sandblasting intensity and sand flow rate are difficult to accurately control, affecting the consistency of the treatment quality.

[0003] With the continuous improvement of transformer performance requirements, traditional sandblasting methods can no longer meet the needs of high-precision and high-consistency surface treatment. In addition, the adjustment of sandblasting parameters of traditional equipment usually requires shutdown operation, which is inefficient and prone to errors. During long-term use, the adjustment mechanism of the equipment may wear or loosen, further reducing the stability of sandblasting quality. These problems not only affect the effect of core surface treatment, but also increase production costs and maintenance difficulty, restricting the further improvement of transformer manufacturing technology. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the problems existing in the prior art, the utility model provides a core surface sandblasting device to solve the technical problems mentioned in the background technology, namely, insufficient or excessive sandblasting in certain areas, and secondly, the difficulty in accurately controlling the sandblasting intensity and sand flow rate.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an iron core surface sandblasting device, comprising a base frame, a sandblasting mechanism is provided on the base frame, and the sandblasting mechanism comprises a shell, a discharge plate, a support rod, a sandblasting head, a transmission mechanism, a sand box and a hose, the shell is mounted on the base frame, the discharge plate is mounted in the shell, the support rod is rotatably mounted in the shell, the sandblasting head is provided with multiple groups mounted on the support rod, the transmission mechanism is arranged on the shell and connected with the support rod, the sand box is mounted on the top surface of the shell, the hose is provided with multiple groups and respectively connects the sand box and the sandblasting head, and each group of sandblasting heads is provided with an adjusting mechanism, the adjusting mechanism comprises an outer sleeve, an adjusting sleeve, a connecting sleeve, a center rod, a flow control sleeve, a flow groove and a blocking sleeve, the outer sleeve is mounted on the bottom end of the hose, the adjusting sleeve is rotatably mounted on the bottom end of the outer sleeve, the connecting sleeve is mounted on the inner wall of the adjusting sleeve, the center rod is arranged in the connecting sleeve, the flow control sleeve is mounted on the top end of the center rod, the flow groove is arranged on the outer wall of the flow control sleeve, and the blocking sleeve is mounted on the inner wall of the outer sleeve and is slidably connected to the outer wall of the flow control sleeve.

[0008] The utility model is further configured as follows: the transmission mechanism includes a motor, a rotating rod, a rotating disk, a hinged plate and a push rod, the motor is installed on one side of the outer shell, the rotating rod is rotatably installed in the outer shell and one end is connected to the output end of the motor, the rotating disk is installed at the outer end of the rotating rod, the hinged plate is installed at one end of the support rod, and the two ends of the push rod are respectively rotatably connected to the turntable and the hinged plate, thereby realizing automatic reciprocating movement of the sandblasting head and improving the uniformity of sandblasting.

[0009] The utility model is further configured such that the discharge plate is configured as a sieve plate, a collecting bucket is installed on the bottom surface of the shell, and a discharge pipe is installed at the bottom end of the collecting bucket. The sieve plate-shaped design not only supports the iron core but also realizes sand material recovery, thereby improving resource utilization.

[0010] The utility model is further configured as follows: the adjusting sleeve is provided with a positioning mechanism, the positioning mechanism includes a positioning groove, a positioning block and a push spring, the positioning grooves are provided with multiple groups distributed on the outer wall of the outer sleeve, the positioning blocks are provided with multiple groups and are all slidably installed on the adjusting sleeve, the push springs are provided with multiple groups and the two ends are respectively connected to the top of the multiple groups of positioning blocks and the outer wall of the adjusting sleeve, the multiple groups of positioning grooves provide multiple preset positions, which are convenient for quick adjustment.

[0011] The utility model is further configured such that a transmission plate is installed on the bottom surface of the flow control sleeve, a ball block is installed on the outer wall of the transmission plate, multiple groups of the ball blocks are provided, a spiral groove is opened on the inner wall of the outer sleeve, and the multiple groups of ball blocks are all slidably installed in the spiral groove, thereby realizing the precise conversion from rotational adjustment to linear control and improving the flow adjustment accuracy.

[0012] The utility model is further configured such that the top ends of the multiple groups of sandblasting heads are all installed with connecting pipes, and the multiple groups of connecting pipes are rotatably connected to the multiple groups of adjusting sleeves to ensure a stable supply of sand materials without affecting the movement of the sandblasting heads.

[0013] The utility model is further configured as follows: a limiting mechanism is provided on the outer wall of the outer sleeve, and the limiting mechanism includes a limiting sleeve, a vertical plate, a horizontal block, a locking sleeve, an unlocking groove and a tension spring; the limiting sleeve is slidably mounted on the outer sleeve, a plurality of vertical plates are provided and mounted on the top surface of the limiting sleeve, a plurality of horizontal blocks are provided and respectively mounted on a plurality of vertical plates; the locking sleeve is rotatably mounted on the outer wall of the outer sleeve, a plurality of unlocking grooves are provided and distributed on the outside of the locking sleeve, and the two ends of the tension spring are respectively connected to the limiting sleeve and the outer sleeve.

[0014] The utility model is further configured such that the outer wall of the outer sleeve is provided with sliding bars, and the sliding bars are provided in multiple groups and are slidably connected with the limiting sleeve, thereby increasing the stability of the movement of the limiting sleeve and improving the locking accuracy.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, this utility model provides a core surface sandblasting equipment with the following features:

[0017] Beneficial effects:

[0018] 1. The sandblasting mechanism achieves efficient and uniform sandblasting through the precise coordination of the casing, discharge plate, support rod, sandblasting head, sand box and hose. The casing provides stable support and protection for the entire mechanism. The sieve-plate design of the discharge plate not only supports the iron core but also allows the used sand to be recovered. The rotatable design of the support rod increases the coverage of the sandblasting. The setting of multiple sets of sandblasting heads ensures comprehensive sandblasting. The coordination of the sand box and hose achieves a stable supply of sand. The transmission mechanism converts the rotational motion of the motor into the reciprocating swing of the support rod through the ingenious coordination of the motor, rotating rod, turntable, hinged plate and push rod. This design not only improves the uniformity of sandblasting, but also increases the adaptability of the equipment, and can handle iron cores of different sizes and shapes. At the same time, the design of the transmission mechanism also reduces the load on the motor and improves the durability of the equipment.

[0019] 2. The adjustment mechanism realizes precise control of sandblasting flow through the precise cooperation of the outer sleeve, adjustment sleeve, connecting sleeve, center rod, flow control sleeve, flow groove and plugging sleeve. The outer sleeve provides stable support for the entire mechanism. The rotating design of the adjustment sleeve allows the operator to easily adjust the flow. The design of the connecting sleeve and the center rod ensures the accuracy and stability of the adjustment. The cooperation between the flow groove and the plugging sleeve on the flow control sleeve realizes fine adjustment of the flow. The cooperation between the transmission plate and the ball block and the spiral groove converts the rotational motion into precise linear motion. This design not only improves the accuracy of the adjustment, but also increases the flexibility of the adjustment, enabling the operator to quickly adjust the sandblasting parameters according to different core materials and surface conditions, thereby improving production efficiency and processing quality.

[0020] 3. The positioning mechanism realizes precise positioning and locking of the adjustment position through the design of positioning grooves, positioning blocks and push springs. Multiple groups of positioning grooves are distributed on the outer wall of the outer sleeve, providing precise positioning points for different adjustment positions. The positioning blocks can be accurately embedded in the positioning grooves under the action of the push springs, ensuring that each adjustment can be accurately in place. This design greatly improves the repeatability and accuracy of the adjustment.

[0021] 4. The limit mechanism realizes reliable locking of the adjustment position through the ingenious cooperation of the limit sleeve, vertical plate, horizontal block, locking sleeve, unlocking groove and tension spring. The sliding design of the limit sleeve allows quick locking and unlocking. The setting of the vertical plate and horizontal block increases the stability of the locking. The rotating design of the locking sleeve makes the locking operation simple and intuitive. The setting of multiple sets of unlocking grooves provides multi-level locking options. The tension spring ensures the reliable return of the limit sleeve. The setting of the slide bar further increases the stability of the limit sleeve movement. This design not only prevents accidental changes in the adjustment position, but also improves the safety and stability of the entire sandblasting system, providing a guarantee for the long-term stable operation of the core surface treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an iron core surface sandblasting device in the present utility model;

[0023] Figure 2 It is a structural diagram of the transmission mechanism in the utility model;

[0024] Figure 3 It is a cross-sectional structural diagram of the adjustment mechanism in the present utility model;

[0025] Figure 4 This is a schematic cross-sectional view of the positioning mechanism in the present utility model;

[0026] Figure 5 It is a structural diagram of the limiting mechanism in the utility model.

[0027] In the figure: 1. Base frame; 2. Shell; 3. Discharge plate; 4. Support rod; 5. Sandblasting head; 6. Sand box; 7. Hose; 8. External sleeve; 9. Adjustment sleeve; 10. Connecting sleeve; 11. Center rod; 12. Flow control sleeve; 13. Flow groove; 14. Blocking sleeve; 15. Motor; 16. Rotating rod; 17. Turntable; 18. Hinge plate; 19. Push rod; 20. Collecting bucket; 21. Discharge pipe; 22. Positioning groove; 23. Positioning block; 24. Push spring; 25. Transmission plate; 26. Ball block; 27. Spiral groove; 28. Connecting pipe; 29. ​​Limiting sleeve; 30. Vertical plate; 31. Horizontal block; 32. Locking sleeve; 33. Unlocking groove; 34. Tension spring; 35. Slide bar. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0031] See also Figure 1-Figure 5 , a core surface sandblasting equipment, including a base frame 1, a sandblasting mechanism is provided on the base frame 1, the sandblasting mechanism includes a shell 2, a discharge plate 3, a support rod 4, a sandblasting head 5, a transmission mechanism, a sandbox 6 and a hose 7, the shell 2 is mounted on the base frame 1, the discharge plate 3 is mounted in the shell 2, the support rod 4 is rotatably mounted in the shell 2, the sandblasting head 5 is provided with multiple groups mounted on the support rod 4, the transmission mechanism is provided on the shell 2 and connected to the support rod 4, the sandbox 6 is installed on the top surface of the shell 2, the hose 7 is provided with multiple groups and respectively connects the sandbox 6 and the sandblasting head 5, multiple The sandblasting heads 5 are each provided with an adjustment mechanism, which includes an outer sleeve 8, an adjustment sleeve 9, a connecting sleeve 10, a center rod 11, a flow control sleeve 12, a flow groove 13 and a blocking sleeve 14. The outer sleeve 8 is mounted on the bottom end of the hose 7, the adjustment sleeve 9 is rotatably mounted on the bottom end of the outer sleeve 8, the connecting sleeve 10 is mounted on the inner wall of the adjustment sleeve 9, the center rod 11 is arranged in the connecting sleeve 10, the flow control sleeve 12 is mounted on the top of the center rod 11, the flow groove 13 is arranged on the outer wall of the flow control sleeve 12, and the blocking sleeve 14 is mounted on the inner wall of the outer sleeve 8 and is slidably connected to the outer wall of the flow control sleeve 12.

[0032] The transmission mechanism includes a motor 15, a rotating rod 16, a rotating disk 17, a hinged plate 18 and a push rod 19. The motor 15 is installed on one side of the housing 2. The rotating rod 16 is rotatably installed in the housing 2 and one end is connected to the output end of the motor 15. The rotating disk 17 is installed at the outer end of the rotating rod 16. The hinged plate 18 is installed at one end of the support rod 4. The two ends of the push rod 19 are respectively rotatably connected to the rotating disk 17 and the hinged plate 18. The motor 15 drives the rotating rod 16 to rotate, and the rotational motion is converted into reciprocating swing of the support rod 4 through the turntable 17, the push rod 19 and the hinged plate 18.

[0033] The discharge plate 3 is set to be sieve plate-shaped, and a collecting bucket 20 is installed on the bottom surface of the shell 2. A discharge pipe 21 is installed at the bottom end of the collecting bucket 20. The sieve plate-shaped discharge plate 3 supports the iron core and allows used sand to pass through. The collecting bucket 20 and the discharge pipe 21 collect and discharge waste sand.

[0034] The adjusting sleeve 9 is provided with a positioning mechanism, which includes a positioning groove 22, a positioning block 23 and a push spring 24. There are multiple groups of positioning grooves 22 distributed on the outer wall of the outer sleeve 8, and there are multiple groups of positioning blocks 23, which are all slidably installed on the adjusting sleeve 9. There are multiple groups of push springs 24, and the two ends are respectively connected to the top of the multiple groups of positioning blocks 23 and the outer wall of the adjusting sleeve 9. The positioning blocks 23 are embedded in the positioning grooves 22 under the action of the push springs 24 to achieve precise positioning.

[0035] A transmission plate 25 is installed on the bottom surface of the flow control sleeve 12, and a ball block 26 is installed on the outer wall of the transmission plate 25. There are multiple groups of ball blocks 26. A spiral groove 27 is opened on the inner wall of the outer sleeve 8. The multiple groups of ball blocks 26 are all slidably installed in the spiral groove 27. The ball blocks 26 slide in the spiral groove 27 to convert the rotational motion into the linear motion of the flow control sleeve 12.

[0036] The tops of the multiple sets of sandblasting heads 5 are all equipped with connecting pipes 28 , which are rotatably connected to the multiple sets of adjustment sleeves 9 . The connecting pipes 28 realize sand material transportation and allow the sandblasting heads 5 to swing with the support rods 4 .

[0037] In this embodiment, the sand material in the sand box 6 is transported to the sandblasting head 5 through the hose 7, and then sprayed onto the surface of the iron core on the discharge plate 3. The transmission mechanism drives the rotating rod 16 to rotate through the motor 15, driving the turntable 17 to rotate. The turntable 17 drives one end of the push rod 19 to rotate, so that the end connected to the push rod 19 and the hinge plate 18 repeatedly pushes and pulls the top of the hinge block back and forth, converting the rotary motion into the reciprocating swing of the support rod 4, so that the sandblasting head 5 moves within a certain range to ensure the uniformity of the sandblasting. The operator rotates the adjusting sleeve 9 to drive the connecting sleeve 10 and the center rod 11 to rotate, and at the same time drives the control sleeve 12 set The transmission plate 25 rotates, and the transmission plate 25 slides in the spiral groove 27 through the ball block 26 set on the outer wall, thereby driving the flow control sleeve 12 to slide along the connecting sleeve 10 through the center rod 11, and converting the rotational movement into linear motion, so that the flow groove 13 on the flow control sleeve 12 and the opening of the blocking sleeve 14 overlap to varying degrees, thereby adjusting the flow of the sand material. The spacing between the multiple groups of positioning grooves 22 is set to an accurate value. When the adjusting sleeve 9 rotates to the preset position, the positioning block 23 is embedded in the positioning groove 22 of the outer wall of the outer sleeve 8 under the action of the push spring 24 to achieve precise positioning, ensuring that each adjustment can be accurately in place.

[0038] See also Figure 5 As an implementation method of the limiting mechanism: a limiting mechanism is provided on the outer wall of the outer sleeve 8, the limiting mechanism includes a limiting sleeve 29, a vertical plate 30, a horizontal block 31, a locking sleeve 32, an unlocking groove 33 and a tension spring 34. The limiting sleeve 29 is slidably installed on the outer sleeve 8, and the vertical plates 30 are provided with multiple groups installed on the top surface of the limiting sleeve 29. The horizontal blocks 31 are provided with multiple groups respectively installed on multiple groups of vertical plates 30. The locking sleeve 32 is rotatably installed on the outer wall of the outer sleeve 8. The unlocking groove 33 is provided with multiple groups distributed on the outside of the locking sleeve 32. The two ends of the tension spring 34 are respectively connected to the limiting sleeve 29 and the outer sleeve 8.

[0039] The outer wall of the outer sleeve 8 is provided with a slide bar 35. The slide bar 35 is provided in multiple groups and is slidably connected with the limit sleeve 29. The slide bar 35 guides the movement of the limit sleeve 29 to ensure smooth sliding.

[0040] More specifically, the limit sleeve 29 is pushed to slide along the sliding strip 35 provided on the outer wall of the outer sleeve 8, so that the inner wall of the limit sleeve 29 applies downward pressure on the top of the multiple groups of positioning blocks 23, so that the positioning blocks 23 lock the adjustment sleeve 9, and then by rotating the locking sleeve 32, the cross block 31 enters or exits the unlocking groove 33, so that the multiple groups of cross blocks 31 perform the chassis 1 on the upper and lower sides of the locking sleeve 32, thereby locking or unlocking the position of the limit sleeve 29, and the tension spring 34 provides the force for the limit sleeve 29 to return to its original position, ensuring the reliability of the locking operation.

[0041] In summary, when the overall equipment is in use or running: the sand material in the sand box 6 is transported to the sandblasting head 5 through the hose 7, and then sprayed onto the surface of the iron core on the discharge plate 3, the transmission mechanism drives the rotating rod 16 to rotate through the motor 15, driving the turntable 17 to rotate, and the turntable 17 drives one end of the push rod 19 to rotate, so that the end connected to the push rod 19 and the hinged plate 18 repeatedly pushes and pulls the top of the hinge block back and forth, converting the rotational motion into the reciprocating swing of the support rod 4, so that the sandblasting head 5 moves within a certain range to ensure the uniformity of the sandblasting, and the operator drives the connecting sleeve 10 and the center rod 11 to rotate by rotating the adjusting sleeve 9, and at the same time drives the flow control sleeve The transmission plate 25 arranged on 12 rotates, and the transmission plate 25 slides in the spiral groove 27 through the ball block 26 arranged on the outer wall, thereby driving the flow control sleeve 12 to slide along the connecting sleeve 10 through the center rod 11, and converting the rotational movement into linear motion, so that the flow groove 13 on the flow control sleeve 12 overlaps with the opening of the blocking sleeve 14 to varying degrees, thereby adjusting the flow rate of the sand material. The spacing between the multiple groups of positioning grooves 22 is set to an accurate value. When the adjusting sleeve 9 rotates to the preset position, the positioning block 23 is embedded in the positioning groove 22 of the outer wall of the outer sleeve 8 under the action of the push spring 24 to achieve precise positioning, ensuring that each adjustment can be accurately in place.

[0042] The limit sleeve 29 is pushed to slide along the sliding strip 35 provided on the outer wall of the outer sleeve 8, so that the inner wall of the limit sleeve 29 applies downward pressure on the top of the multiple groups of positioning blocks 23, so that the positioning blocks 23 lock the adjustment sleeve 9, and then by rotating the locking sleeve 32, the cross block 31 enters or exits the unlocking groove 33, so that the multiple groups of cross blocks 31 perform the chassis 1 on the upper and lower sides of the locking sleeve 32, thereby locking or unlocking the position of the limit sleeve 29, and the tension spring 34 provides the force for the limit sleeve 29 to return to its original position, ensuring the reliability of the locking operation.

[0043] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An iron core surface sandblasting device, comprising a base frame (1), characterized in that: The base frame (1) is provided with a sandblasting mechanism, and the sandblasting mechanism comprises a shell (2), a discharge plate (3), a support rod (4), a sandblasting head (5), a transmission mechanism, a sandbox (6) and a hose (7). The shell (2) is mounted on the base frame (1), the discharge plate (3) is mounted in the shell (2), the support rod (4) is rotatably mounted in the shell (2), the sandblasting head (5) is provided with a plurality of groups mounted on the support rod (4), the transmission mechanism is provided on the shell (2) and connected to the support rod (4), the sandbox (6) is mounted on the top surface of the shell (2), the hose (7) is provided with a plurality of groups and respectively connects the sandbox (6) and the sandblasting head (5), and the plurality of groups of sandblasting heads (5) are all provided with a plurality of hoses (7). An adjusting mechanism is provided, which comprises an outer sleeve (8), an adjusting sleeve (9), a connecting sleeve (10), a center rod (11), a flow control sleeve (12), a flow groove (13) and a blocking sleeve (14). The outer sleeve (8) is mounted on the bottom end of the hose (7), the adjusting sleeve (9) is rotatably mounted on the bottom end of the outer sleeve (8), the connecting sleeve (10) is mounted on the inner wall of the adjusting sleeve (9), the center rod (11) is arranged in the connecting sleeve (10), the flow control sleeve (12) is mounted on the top end of the center rod (11), the flow groove (13) is arranged on the outer wall of the flow control sleeve (12), and the blocking sleeve (14) is mounted on the inner wall of the outer sleeve (8) and is slidably connected to the outer wall of the flow control sleeve (12).

2. The iron core surface sandblasting equipment according to claim 1, characterized in that: The transmission mechanism comprises a motor (15), a rotating rod (16), a rotating disk (17), a hinged plate (18) and a push rod (19); the motor (15) is mounted on one side of the housing (2); the rotating rod (16) is rotatably mounted in the housing (2) and one end of the rotating rod (16) is connected to the output end of the motor (15); the rotating disk (17) is mounted on the outer end of the rotating rod (16); the hinged plate (18) is mounted on one end of the support rod (4); and the two ends of the push rod (19) are rotatably connected to the rotating disk (17) and the hinged plate (18).

3. The core surface sandblasting device according to claim 2, characterized in that: The discharge plate (3) is configured as a sieve plate, a collecting hopper (20) is installed on the bottom surface of the housing (2), and a discharge pipe (21) is installed at the bottom end of the collecting hopper (20).

4. The core surface sandblasting device according to claim 3, characterized in that: The adjusting sleeve (9) is provided with a positioning mechanism, which includes a positioning groove (22), a positioning block (23) and a push spring (24). The positioning groove (22) is provided with multiple groups distributed on the outer wall of the outer sleeve (8), the positioning block (23) is provided with multiple groups and is slidably installed on the adjusting sleeve (9), and the push spring (24) is provided with multiple groups and its two ends are respectively connected to the top of the multiple groups of the positioning blocks (23) and the outer wall of the adjusting sleeve (9).

5. The core surface sandblasting device according to claim 4, characterized in that: A transmission plate (25) is installed on the bottom surface of the flow control sleeve (12), and a ball block (26) is installed on the outer wall of the transmission plate (25). The ball blocks (26) are provided in multiple groups. A spiral groove (27) is opened on the inner wall of the outer sleeve (8), and the multiple groups of ball blocks (26) are all slidably installed in the spiral groove (27).

6. The core surface sandblasting equipment according to claim 5, characterized in that: multiple groups The top of each of the sandblasting heads (5) is provided with a connecting pipe (28), and multiple groups of the connecting pipes (28) are rotatably connected to multiple groups of the adjusting sleeves (9).

7. The core surface sandblasting device according to claim 6, characterized in that: The outer wall of the outer sleeve (8) is provided with a limiting mechanism, and the limiting mechanism includes a limiting sleeve (29), a vertical plate (30), a horizontal block (31), a locking sleeve (32), an unlocking groove (33) and a tension spring (34). The limiting sleeve (29) is slidably mounted on the outer sleeve (8), the vertical plates (30) are provided with multiple groups mounted on the top surface of the limiting sleeve (29), the horizontal blocks (31) are provided with multiple groups respectively mounted on multiple groups of the vertical plates (30), the locking sleeve (32) is rotatably mounted on the outer wall of the outer sleeve (8), the unlocking groove (33) is provided with multiple groups distributed on the outside of the locking sleeve (32), and the two ends of the tension spring (34) are respectively connected to the limiting sleeve (29) and the outer sleeve (8).

8. The iron core surface sandblasting equipment according to claim 7, characterized in that: The outer wall of the outer sleeve (8) is provided with a sliding bar (35), and the sliding bar (35) is provided in multiple groups and is slidably connected to the limiting sleeve (29).

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