Concrete sandstone separator

Abstract

The utility model discloses a concrete sandstone separator which comprises a separator body, a separating device is arranged on the separator body and comprises a temporary storage bin, a separating cylinder, a feeding port, a spiral frame, a first discharging port, a water storage tank and a water leakage hole, the temporary storage bin is installed above the separating cylinder, the spiral frame is installed in the separating cylinder, the feeding port is formed in the top end of the separator body, and the water leakage hole is formed in the top end of the separator body. The first discharging port is connected with the bottom end of the separator, the water leakage hole is formed in the bottom end of the first discharging port, the water storage tank is installed at the bottom end of the separator, the top end of the temporary storage bin is connected with a regulation and control device, the regulation and control device comprises a top sleeve, a limiting plate, a sliding groove, a sliding block, a corrugated pipe, an adjusting piece, an adjusting pipe and a control sleeve, the top sleeve is connected with the corrugated pipe, and the control sleeve is installed on the outer side of the adjusting pipe. The adjusting piece is installed in the adjusting pipe, the sliding block is arranged on the outer side of the top sleeve, the sliding groove is formed in the inner wall of the adjusting pipe, the limiting plate is arranged on the inner side of the control sleeve, and one end of the water storage tank is connected with a quick connecting device.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete sand and gravel separation, and more specifically, to a concrete sand and gravel separator. Background Art

[0002] In the existing technology, the design of concrete sand and gravel separators usually presents some structural simplifications, which helps to reduce manufacturing and maintenance costs, but also limits the functionality of the machine, especially in terms of efficient screening and resource recycling and reuse. Due to the simplification of the structure, these machines are usually unable to effectively separate the fine particles and sand and gravel in the concrete, resulting in waste of resources and low recycling efficiency. This lack of efficiency not only increases resource consumption, but also aggravates the environmental impact of construction waste.

[0003] In addition, some existing equipment uses flushing to process concrete and sand and gravel to improve the recovery rate of resources. However, the flushing part of these equipment usually adopts a relatively simple pipeline structure and fails to provide an effective mechanism to regulate the flow rate and pressure of the flushing water. The uncontrollable flow rate may lead to unstable or insufficient flushing efficiency, further affecting the separation quality and purity of the recycled materials. Correct water flow control is essential to ensure that all recyclable materials are effectively cleaned and recycled, especially when processing heavy sand and gravel containing a large amount of residual concrete.

[0004] Another key issue is that the flushing part of some equipment lacks efficient pipe connections and quick release mechanisms. Although some pipe systems with quick docking functions have appeared on the market, these systems often have defects in sealing performance. Poor sealing performance may cause water leakage and material loss, affecting the efficiency and effectiveness of the entire separation process. In addition, poor sealing may also bring environmental risks, such as ground water contamination and water accumulation in the work site. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the utility model provides a concrete sand and gravel separator to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a concrete sand and gravel separator, comprising a separator, the separator is provided with a separation device, the separation device comprises a buffer bin, a separation cylinder, a feeding port, a spiral frame, a first discharge port, a water storage tank, and a water leakage hole, the buffer bin is installed above the separation cylinder, the separation cylinder can be movably installed in the separator, the spiral frame is installed in the separation cylinder, the feeding port is arranged at the top of the separator, the first discharge port is connected to the bottom of the separator, the water leakage hole is opened at the bottom of the first discharge port, the water storage tank is installed below the first discharge port, and the The top of the cache bin is connected with a regulating device, which includes a top sleeve, a limit plate, a slide groove, a slider, a bellows, an adjusting piece, an adjusting tube and a control sleeve. The bellows is installed at the top of the cache bin, the top sleeve is connected to the top of the bellows, the control sleeve is movably connected to the outside of the top sleeve through a thread, the adjusting tube sleeve is arranged on the outside of the top sleeve, the adjusting piece is movably installed in the adjusting tube, the slider is arranged on the outside of the top sleeve, the slide groove is opened on the inner wall of the adjusting tube, and the slider is slidably installed in the slide groove, the limit plate is arranged on the inner side of the control sleeve, and a quick connection device is connected to one end of the water tank.

[0009] The utility model is further configured that a cover plate is provided on the top of the separator, and the cover plate is installed above the feeding port.

[0010] The utility model is further configured that a second discharge port is provided at one side of the separator, a toggle plate is provided at one side of the second discharge port, and the toggle plate is connected to the spiral frame.

[0011] The utility model is further configured that a driving assembly is provided on one side of the separator, and an output end of the driving assembly is connected to one end of the spiral frame.

[0012] The utility model is further configured that a push spring is arranged in the regulating tube, and the other end of the push spring is connected to the regulating sheet. The configuration of the push spring facilitates the stable resetting of the regulating tube.

[0013] The utility model is further configured as follows: the quick-connect device includes a connecting pipe, a plug-in pipe, a plug-in frame, a plug-in groove, a rotating sleeve, a rotating plate, a tension spring, a sealing ring, a matching rod and a matching block; the connecting pipe is installed on one side of the water tank; the plug-in pipe is detachably installed in the connecting pipe; one end of the plug-in frame is engaged with the plug-in groove; the plug-in groove is provided on the outside of the plug-in pipe; the rotating sleeve is movably mounted on the outside of the connecting pipe; the rotating plate is provided on one side of the rotating sleeve; the tension spring is movably mounted on the inside of the plug-in frame; the sealing ring is detachably mounted on the inside of the connecting pipe; the matching rod is installed on both sides of the plug-in frame; the matching block is connected to one side of the sliding sleeve; and the quick-connect device realizes a quick connection between pipes.

[0014] The utility model is further configured that return blocks are provided on both sides of the rotating sleeve, a spring is provided on one side of the return block, and the spring is movably installed on the return block. The configuration of the return block and the spring simplifies the resetting operation of the quick-connect device.

[0015] The utility model is further configured such that a sealing strip is provided on the outer side of the plug-in tube, a groove is provided on the inner side of the connecting tube, and a plurality of the sealing strips are respectively engaged in the corresponding grooves. The configuration of the sealing strips and the grooves further enhances the sealing effect of the connection.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a concrete sand and gravel separator with the following features:

[0018] Beneficial effects:

[0019] 1. The separation device adopts a combination of multiple components such as a buffer bin and a separation cylinder, which improves the separation efficiency of concrete and sand and gravel, allows more refined material processing and enhances the ability of resource recycling. This efficient separation mechanism not only improves the quality of the screening process, but also ensures the high purity of resources such as sand and gravel, and meets the needs of resource recycling and environmental protection.

[0020] 2. The control device uses a sophisticated control system, including components such as regulating tubes and bellows, to enable the operator to accurately control the flow rate and pressure of the flushing water, thereby optimizing the effect of the flushing process. This precise flow rate control not only ensures the uniformity of flushing, but also reduces the waste of water resources, further improving the economy and environmental protection of the entire separation process.

[0021] 3. The quick-connect device greatly simplifies the operation of pipe connection and disassembly. Through a set of efficient plug-in and sealing systems, it ensures high sealing performance and fast operation at the connection. This quick connection technology reduces the time of equipment maintenance and pipeline configuration, and improves the adaptability and convenience of the system. Through the comprehensive application of these technologies, the concrete sand and gravel separator not only improves the operating efficiency and environmental protection effect, but also enhances the reliability and economic benefits of the equipment, and supports the construction practice of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a concrete sand and gravel separator in the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model without the mixed storage bin part and the cover plate;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the quick-connect device part of the utility model;

[0026] Figure 5 It is a schematic cross-sectional structure diagram of the control device part in the utility model.

[0027] In the figure: 1. separator; 2. buffer bin; 3. separation cylinder; 4. feeding port; 5. spiral rack; 6. first discharge port; 7. water storage tank; 8. leakage hole; 9. top sleeve; 10. limit plate; 11. slide groove; 12. slider; 13. bellows; 14. adjustment sheet; 15. adjustment tube; 16. control sleeve; 17. cover plate; 18. second discharge port; 19. toggle plate; 20. drive assembly; 21. push spring; 22. connecting pipe; 23. plug-in pipe; 24. plug-in rack; 25. plug-in slot; 26. rotating sleeve; 27. rotating plate; 28. tension spring; 29. ​​sealing ring; 30. matching rod; 31. matching block; 32. return block; 33. spring; 34. sealing strip; 35. groove. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model 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 meanings 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 used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference 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 directions are not used to limit the present invention.

[0031] See also Figure 1-5A concrete sand and gravel separator 1 comprises a separator 1, on which a separation device is arranged, the separation device comprising a buffer bin 2, a separation cylinder 3, a feeding port 4, a spiral frame 5, a first discharge port 6, a water storage tank 7, and a water leakage hole 8. The buffer bin 2 is installed above the separation cylinder 3, the separation cylinder 3 is movably installed in the separator 1, the spiral frame 5 is installed in the separation cylinder 3, the feeding port 4 is arranged at the top of the separator 1, the first discharge port 6 is connected to the bottom of the separator 1, the water leakage hole 8 is opened at the bottom of the first discharge port 6, the water storage tank 7 is installed below the first discharge port 6, the top of the buffer bin 2 is connected with a regulating device, and the regulating device comprises A top sleeve 9, a limit plate 10, a slide groove 11, a slider 12, a bellows 13, an adjusting piece 14, an adjusting tube 15 and a control sleeve 16. The bellows 13 is installed at the top of the cache bin 2. The top sleeve 9 is connected to the top of the bellows 13. The control sleeve 16 is movably connected to the outer side of the top sleeve 9 through a thread. The adjusting tube 15 is sleeved on the outer side of the top sleeve 9. The adjusting piece 14 is movably installed in the adjusting tube 15. The slider 12 is arranged on the outer side of the top sleeve 9. The slide groove 11 is opened on the inner wall of the adjusting tube 15, and the slider 12 is slidably installed in the slide groove 11. The limit plate 10 is arranged on the inner side of the control sleeve 16. A quick-connect device is connected to one end of the water tank 7.

[0032] A cover plate 17 is provided at the top of the separator 1 , and the cover plate 17 is installed above the feeding port 4 .

[0033] A second discharge port 18 is provided at one side of the separator 1 , and a toggle plate 19 is provided at one side of the second discharge port 18 . The toggle plate 19 is connected to the spiral frame 5 .

[0034] A driving assembly 20 is provided on one side of the separator 1 , and an output end of the driving assembly 20 is connected to one end of the spiral frame 5 .

[0035] A push spring 21 is provided in the regulating tube 15 , and the other end of the push spring 21 is connected to the regulating piece 14 .

[0036] In this embodiment, when it is necessary to use the device to separate concrete and sand and gravel, first open the cover plate 17, then put the concrete and sand and gravel into the separation cylinder 3 through the feeding bin, then open the driving assembly 20, the driving assembly 20 drives the spiral frame 5 to rotate, so that the spiral frame 5 drives the concrete and sand and gravel to move, and at the same time open the external conveying equipment to transport the flushing water to the buffer bin 2, and then transport the flushing water to the separator 1 through the external flushing head at the bottom of the buffer bin 2, so as to flush the concrete and sand and gravel in the separation cylinder 3 and promote the separation between the two, and then the used flushing water and the separated sand and gravel will flow into the bottom of the separator 1 through the filter holes opened on the side wall of the separation cylinder 3, and then flow to the first discharge port 6, and then the flushing water will flow into the water storage tank 7 arranged below through the leakage hole 8 opened at the bottom of the first discharge port 6, so as to facilitate the recycling and reuse of water resources, and then the flushed sand and gravel will flow into the external storage device through the first discharge port 6, so as to facilitate the recycling and reuse of sand and gravel, and then the spiral frame 5 will transport the separated concrete to the second discharge port 18 set at the other end of the separation cylinder 3, and then the toggle plate 19 will rotate with the spiral frame 5 to push out the concrete accumulated inside the second discharge port, so that the concrete falls into the external storage device, thereby facilitating the recycling of the concrete. When it is necessary to adjust the flow rate and pressure of the flushing water, the control sleeve 16 is rotated to ensure that the regulating pipe 15 does not rotate. Due to the limit setting of the slider 12 and the slide groove 11, the top sleeve 9 will not rotate with the control sleeve 16. Since the control sleeve 16 is movably connected to the outer side of the top sleeve 9 through threads, and due to the setting of the limit plate 10, the top sleeve 9 will slide upward in the adjusting tube 15, and at the same time, the top sleeve 9 will drive the bellows 13 to extend, and then the top sleeve 9 will push open the multiple adjusting plates 14 set in the adjusting tube 15, and at the same time, the adjusting plates 14 will compress the push spring 21 connected on the other side, thereby changing the cross-sectional area of ​​the corresponding position of the adjusting tube 15, and then changing the flow rate of the flushing water. When the adjustment is completed, stop rotating the control sleeve 16.

[0037] See also Figure 1-4 As an implementation method of the quick-connect device: the quick-connect device includes a connecting pipe 22, a plug-in pipe 23, a plug-in frame 24, a plug-in groove 25, a rotating sleeve 26, a rotating plate 27, a tension spring 28, a sealing ring 29, a matching rod 30 and a matching block 31. The connecting pipe 22 is installed on one side of the water tank 7, the plug-in pipe 23 is detachably installed in the connecting pipe 22, one end of the plug-in frame 24 is engaged in the plug-in groove 25, the plug-in groove 25 is arranged on the outside of the plug-in pipe 23, the rotating sleeve 26 is movably sleeved on the outside of the connecting pipe 22, the rotating plate 27 is arranged on one side of the rotating sleeve 26, the tension spring 28 is movably installed on the inside of the plug-in frame 24, the sealing ring 29 is detachably installed on the inside of the connecting pipe 22, the matching rod 30 is installed on both sides of the plug-in frame 24, and the matching block 31 is connected to one side of the sliding sleeve.

[0038] Return blocks 32 are provided on both sides of the rotating sleeve 26 , and a spring 33 is provided on one side of the return block 32 . The spring 33 is movably installed on the return block 32 .

[0039] A sealing strip 34 is disposed on the outer side of the plug-in tube 23 , and a groove 35 is disposed on the inner side of the connecting tube 22 . A plurality of sealing strips 34 are respectively engaged in the corresponding grooves 35 .

[0040] More specifically, when the pipes need to be connected together, first rotate the rotating plate 27 in the corresponding direction, the rotating plate 27 will drive the rotating sleeve 26 to rotate, and then the rotating sleeve 26 will compress the spring 33 set on one side through the return block 32, and at the same time the rotating sleeve 26 will drive the matching block 31 to move. Due to the special structural design of the matching block 31, the matching block 31 will gradually push open the matching rod 30, and then the matching rod 30 will drive the plug-in frame 24 to move outward, and at the same time the plug-in frame 24 will drive the tension spring 28 set on the inside to stretch. When the rotating plate 27 and the rotating sleeve 26 can no longer rotate, one end of the plug-in frame 24 is just flush with the inner side of the connecting pipe 22, and then the plug-in pipe 23 is inserted into the connecting pipe 22 and one end of the plug-in pipe 23 is against the sealing ring 29 set on the inner side of the connecting pipe 22, and then the rotating plate 27 is released. , the spring 33 will push the return block 32 to reset, thereby driving the rotating sleeve 26 and the matching block 31 to reset, and then the matching rod 30 will lose the limit of the matching block 31, and then the tension spring 28 will drive the matching rod 30 and the plug-in frame 24 to reset, so that the plug-in frame 24 is fully inserted into the plug-in slot 25. Due to the unique slope design on the inner side of the plug-in slot 25, when one end of the plug-in frame 24 is fully inserted into the plug-in slot 25, it will drive the plug-in tube 23 to squeeze the sealing ring 29, thereby ensuring the sealing effect. At the same time, the multiple sealing strips 34 arranged on the outer side of the plug-in tube 23 will be engaged with the corresponding grooves 35 one by one, thereby further strengthening the sealing performance of the connection. Then the sewage flowing into the water storage tank 7 can be transported to the sedimentation tank through the connecting pipe 22 and the delivery pipe, and then filtered and purified to achieve water resource recycling.

[0041] In summary, when the overall equipment is in use or running: when the equipment needs to be used to separate concrete and sand and gravel, first open the cover plate 17, then put the concrete and sand and gravel into the separation cylinder 3 through the feeding bin, and then turn on the drive assembly 20, the drive assembly 20 drives the spiral frame 5 to rotate, so that the spiral frame 5 drives the concrete and sand and gravel to move, and at the same time turn on the external conveying equipment to convey the flushing water to the buffer bin 2, and then convey the flushing water to the separator 1 through the external flushing head at the bottom of the buffer bin 2, so as to separate the separation cylinder 3 to wash the concrete and sand and gravel, and promote the separation between the two, then the used washing water and the separated sand and gravel will flow into the bottom end of the separator 1 through the filter holes opened on the side wall of the separation cylinder 3, and then flow to the first discharge port 6, and then the washing water will flow into the water storage tank 7 arranged below through the leakage hole 8 opened at the bottom end of the first discharge port 6, so as to facilitate the recycling and reuse of water resources, and then the washed sand and gravel will flow into the external storage device through the first discharge port 6, so as to facilitate the recycling and reuse of sand and gravel. Then the spiral frame 5 will transport the separated concrete to the second discharge port 18 set at the other end of the separation cylinder 3, and then the toggle plate 19 will rotate with the spiral frame 5 to push out the concrete accumulated inside the second discharge port, so that the concrete falls into the external storage device, thereby facilitating the recycling of the concrete. When it is necessary to adjust the flow rate and pressure of the flushing water, the control sleeve 16 is rotated to ensure that the regulating pipe 15 does not rotate. Due to the limit setting of the slider 12 and the slide groove 11, the top sleeve 9 will not rotate with the control sleeve 16. Since the control sleeve 16 is movably connected to the outer side of the top sleeve 9 through threads and due to the setting of the limit plate 10, the top sleeve 9 will slide upward in the adjusting tube 15, and at the same time, the top sleeve 9 will drive the bellows 13 to extend, and then the top sleeve 9 will push open the multiple adjusting sheets 14 set in the adjusting tube 15, and at the same time, the adjusting sheets 14 will compress the push spring 21 connected to the other side, thereby changing the cross-sectional area of ​​the corresponding position of the adjusting tube 15, and then changing the flow rate of the flushing water. When the adjustment is completed, stop rotating the control sleeve 16.

[0042] When the pipes need to be connected together, first rotate the rotating plate 27 in the corresponding direction, the rotating plate 27 will drive the rotating sleeve 26 to rotate, and then the rotating sleeve 26 will compress the spring 33 set on one side through the return block 32, and at the same time, the rotating sleeve 26 will drive the matching block 31 to move. Due to the special structural design of the matching block 31, the matching block 31 will gradually push open the matching rod 30, and then the matching rod 30 will drive the plug-in frame 24 to move outward, and at the same time, the plug-in frame 24 will drive the tension spring 28 set on the inside to stretch. When the rotating plate 27 and the rotating sleeve 26 can no longer rotate, one end of the plug-in frame 24 is just flush with the inner side of the connecting pipe 22, and then the plug-in pipe 23 is inserted into the connecting pipe 22 and one end of the plug-in pipe 23 is against the sealing ring 29 set on the inner side of the connecting pipe 22, and then the rotating plate 27 is released, and the spring 28 is released. The spring 33 will push the return block 32 to reset, thereby driving the rotating sleeve 26 and the matching block 31 to reset, and then the matching rod 30 will lose the limit of the matching block 31, and then the tension spring 28 will drive the matching rod 30 and the plug-in frame 24 to reset, so that the plug-in frame 24 is fully inserted into the plug-in slot 25. Due to the unique slope design on the inner side of the plug-in slot 25, when one end of the plug-in frame 24 is fully inserted into the plug-in slot 25, it will drive the plug-in tube 23 to squeeze the sealing ring 29, thereby ensuring the sealing effect. At the same time, the multiple sealing strips 34 arranged on the outside of the plug-in tube 23 will be snapped into the corresponding grooves 35 one by one, thereby further strengthening the sealing performance of the connection. Then the sewage flowing into the water storage tank 7 can be transported to the sedimentation tank through the connecting pipe 22 and the delivery pipe, and then filtered and purified to achieve water resource recycling.

[0043] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model 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 principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A concrete sand and gravel separator, comprising a separator (1), characterized in that: The separator (1) is provided with a separation device, which comprises a buffer bin (2), a separation cylinder (3), a feeding port (4), a spiral frame (5), a first discharge port (6), a water storage tank (7), and a water leakage hole (8). The buffer bin (2) is installed above the separation cylinder (3), the spiral frame (5) is installed in the separation cylinder (3), the feeding port (4) is arranged at the top of the separator (1), the first discharge port (6) is connected to the bottom of the separator (1), the water leakage hole (8) is opened at the bottom of the first discharge port (6), the water storage tank (7) is installed at the bottom of the separator (1), and the top of the buffer bin (2) is connected to a regulating The control device comprises a top sleeve (9), a limit plate (10), a slide groove (11), a slider (12), a bellows (13), an adjustment sheet (14), an adjustment tube (15) and a control sleeve (16); the top sleeve (9) is connected to the bellows (13); the control sleeve (16) is installed on the outside of the adjustment tube (15); the adjustment sheet (14) is installed in the adjustment tube (15); the slider (12) is arranged on the outside of the top sleeve (9); the slide groove (11) is opened on the inner wall of the adjustment tube (15); the limit plate (10) is arranged on the inner side of the control sleeve (16); and one end of the water storage tank (7) is connected with a quick connection device.

2. A concrete sand and gravel separator according to claim 1, characterized in that: The top of the separator (1) is provided with a cover plate (17), and the cover plate (17) is installed above the feeding port (4).

3. A concrete sand and gravel separator according to claim 2, characterized in that: A second discharge port (18) is provided on one side of the separator (1), and a shifting plate (19) is provided on one side of the second discharge port (18), wherein the shifting plate (19) is connected to the spiral frame (5).

4. A concrete sand and gravel separator according to claim 3, characterized in that: A drive assembly (20) is provided on one side of the separator (1), and an output end of the drive assembly (20) is connected to one end of the spiral frame (5).

5. The concrete sand and gravel separator according to claim 1, characterized in that: A push spring (21) is arranged inside the regulating tube (15), and the other end of the push spring (21) is connected to the regulating sheet (14).

6. A concrete sand and gravel separator according to any one of claims 1 to 5, characterized in that: The quick-connect device comprises a connecting pipe (22), a plug-in pipe (23), a plug-in frame (24), a plug-in slot (25), a rotating sleeve (26), a rotating plate (27), a tension spring (28), a sealing ring (29), a matching rod (30) and a matching block (31); the connecting pipe (22) is installed on one side of the water storage tank (7); the plug-in pipe (23) is detachably installed in the connecting pipe (22); one end of the plug-in frame (24) is engaged with the plug-in slot (25); The plug-in slot (25) is provided on the outside of the plug-in tube (23); the rotating sleeve (26) is movably sleeved on the outside of the connecting tube (22); the rotating plate (27) is arranged on one side of the rotating sleeve (26); the tension spring (28) is movably mounted on the inside of the plug-in frame (24); the sealing ring (29) is detachably mounted on the inside of the connecting tube (22); the matching rod (30) is mounted on both sides of the plug-in frame (24); and the matching block (31) is connected to one side of the sliding sleeve.

7. A concrete sand and gravel separator according to claim 6, characterized in that: Return blocks (32) are provided on both sides of the rotating sleeve (26), and a spring (33) is provided on one side of the return block (32). The spring (33) is movably mounted on the return block (32).

8. A concrete sand and gravel separator according to claim 7, characterized in that: A sealing strip (34) is provided on the outside of the plug-in tube (23), a groove (35) is provided on the inside of the connecting tube (22), and a plurality of the sealing strips (34) are respectively engaged in corresponding grooves (35).

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