A concrete sand and gravel mixing separation and recycling equipment
By designing a concrete sand and gravel mixing separation and recycling equipment, and using a mixing roller and a fishing unit to stir and screen the concrete slurry water, the problem of mortar adhering to the surface of the sand and gravel is solved, and sand and gravel separation with high cleanliness is achieved.
Patent Information
- Application Number
- CN202411980659.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the existing concrete sand and gravel separation equipment separates sand and mortar, the mortar is prone to accumulate and adhere to the surface of the sand and gravel particles, increasing the cleaning workload of the sand and gravel surface.
A concrete sand and gravel mixing separation and recycling equipment is designed. Through the setting of a mixing tank and a fishing unit, the slurry water is stirred evenly by using a stirring roller to make the sand and gravel roll, and the sand and gravel are screened and fished through the fishing unit to reduce the adhesion of the slurry ash on the surface of the sand and gravel.
The separation is achieved during the rolling process of sand and gravel, reducing the adhesion of slurry ash on the surface of the sand and gravel, and improving the cleanliness of sand and gravel separation.
Smart Images
Figure CN119733698A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of concrete recycling, in particular to concrete sand and gravel mixing, separation and recycling equipment. Background Art
[0002] If the unused concrete slurry is not handled in time, the concrete slurry will stick to the storage and transportation equipment. For example, the residual slurry in the concrete transport tanker will condense on the inner wall of the tanker, making it extremely difficult to clean. At the same time, the sand and gravel in the slurry can be recycled. If it is not separated and recycled, it will increase the construction cost and is not conducive to environmental protection. For this reason, the unused concrete needs to be separated in time. The existing concrete sand and gravel separator generally dilutes the concrete slurry or flushes the slurry water into the separation equipment, and separates the sand and gravel from the mortar through the rotation and vibration of the screening mechanism such as the screening roller, and then refines the sand and gravel in the screening machine. However, when separating the sand and gravel from the mortar, the existing separation equipment generally directly pours the slurry through the fine screen for separation, which makes the mortar easily accumulate and adhere to the surface of the sand and gravel particles, increasing the subsequent cleaning workload of the sand and gravel surface. Summary of the invention
[0003] The object of the present invention is to provide a concrete sand and gravel mixing, separation and recovery device to solve the problems raised in the above background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A concrete sand and gravel mixing, separation and recycling device, comprising:
[0006] A bottom frame, the top surface of which is fixedly connected with a plurality of side support rods;
[0007] A top cover is arranged above the bottom frame, the bottom end of the top cover is rotatably connected to a stirring roller, a ring frame is fixedly installed below the top cover, the ring frame is fixedly connected to the top ends of a plurality of side support rods, a driving motor 1 is installed at the top end of the top cover, and the output end of the driving motor 1 is drivingly connected to the top end of the stirring roller;
[0008] A stirring tank is installed at the bottom end of the base frame, and the stirring tank is used to receive the slurry water;
[0009] The rotating mechanism is rotatably connected to the bottom surface of the top cover, and the rotating mechanism includes a rotating frame, and both sides of the bottom surface of the rotating frame are fixedly connected with folding rods, and the bottom end of the folding rod is rotatably connected with a sleeve rod, and the outer side wall of the sleeve rod is slidably sleeved with a scooping unit, and the top surface of the top cover is installed with a second driving motor, and the second driving motor is used to drive the rotating frame to rotate.
[0010] Furthermore, the scooping unit comprises a sleeve, the sleeve is slidably sleeved with a sleeve rod, one side of the sleeve is fixedly connected with a connecting seat, one side of the connecting seat is rotatably connected with a screen plate, one side of one end of the screen plate is fixedly connected with a rocker arm, and one end of the rocker arm is fixedly connected with a support rod.
[0011] Further, a gear 1 is arranged at the top end of the folding line rod, the gear 1 is rotationally connected to the bottom surface of the rotating frame, the gear 1 is rotationally connected to the top end of the sleeve rod, and a groove portion is arranged on the folding line rod.
[0012] Furthermore, gear 2 is rotatably connected to one side of the bottom surface of the rotating frame, arc tooth 1 is fixedly connected to one side of the top cover, arc tooth 2 is fixedly connected to the outer side of the top cover at a position on one side of arc tooth 1, gear 2 is meshed with gear 1, and gear 3 is fixedly sleeved on the outer side wall of the sleeve, and gear 3 is used to mesh with arc tooth 2.
[0013] Furthermore, an annular seat is fixedly connected to the top surface of the rotating frame, the annular seat is rotatably connected to the top cover, an annular gear ring is fixedly connected to the inner wall of the annular seat, a transmission gear is fixedly connected to the output end of the second driving motor, and the transmission gear is meshed with the annular gear ring.
[0014] Furthermore, the bottom end of the second gear is fixedly connected with a limiting wheel, the inner wall of the annular frame is fixedly connected with a C-shaped rail, and the opening position of the C-shaped rail is aligned with the position of the first arc tooth.
[0015] Furthermore, winding rollers are installed on both sides of the top surface of the rotating frame, and a pull rope is wound and fixedly connected to the winding rollers. A connecting head is rotatably connected to the outer wall of the top end of the sleeve, and the bottom end of the pull rope is fixedly connected to one end of the connecting head. A bevel gear is fixedly installed on one end of the winding roller, and an arc gear rod is fixedly connected to the bottom surface of the top cover, and the bevel gear is used for meshing transmission with the arc gear rod.
[0016] The invention further comprises: a bottom rod is rotatably connected between the bottom ends of the two sleeve rods, and a vertical rod is fixedly connected between the bottom rod and the rotating frame.
[0017] Furthermore, the top surface of the screen plate is inwardly curved.
[0018] Furthermore, a partition is fixedly connected to the middle position of the top surface of the screen plate.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. Through the setting of the mixing tank and the scooping unit, the slurry water in the mixing tank is stirred evenly by the mixing roller, so that the slurry water rotates forward, thereby making the sand and gravel in the slurry water roll in the mixing tank, and the sand and gravel are screened and scooped by the scooping unit, and the second driving motor drives the rotary mechanism to rotate forward, and the rotary mechanism drives the two scooping units to revolve forward, and the revolving speed of the scooping unit is lower than the rotation speed of the slurry water, so that it is convenient for the scooping unit to intercept the sand and gravel, and the scooping unit can unload the sand and gravel to the outside of the mixing tank. Through the setting of the two scooping units, the sand and gravel in the mixing tank are scooped cyclically, and the sand and gravel are separated during the rolling process, the adhesion of slurry ash on the surface of the sand and gravel is reduced, and the cleanliness of the sand and gravel separation is improved;
[0021] 2. Through the setting of the scooping unit and the slewing mechanism, through the setting of the support rod and the screen plate, when the sleeve rod rotates, the sleeve drives the screen plate to rotate around the sleeve rod through the sleeve. Through the setting of the rocker arm and the support rod, when the screen plate is located at the bottom end of the sleeve rod, the support rod and the sleeve rod are in conflict, so that the screen plate remains in an inclined state in the mixing tank, so that the screen plate can intercept sand and gravel conveniently. When the scooping unit moves up along the sleeve rod, until the support rod moves to the corresponding height of the groove part, when the support rod is parallel to the groove part, the scooping unit still maintains the original inclination angle. When the sleeve rod rotates, The sleeve rod drives the screen plate to deflect outward, and the support rod and the groove part are staggered at an angle, so that the screen plate is tilted in the vertical direction, so that the sand and gravel are dumped to the outside of the mixing tank, that is, when the screen plate deflects outward, the screen plate deflects downward. When the screen plate deflects inward, the screen plate is driven to deflect upward through the setting of the rotating mechanism, so that the screen plate unloads the sand and gravel outward and then rotates back to the mixing tank to reset, so that the screen plate is convenient to move up and deflect outward and downward at the same time, and then reset. The cyclic movement of the screen plate is only moved by the second driving motor;
[0022] 3. Through the setting of arc tooth 1 and arc tooth 2, driving motor 2 drives the rotating frame to rotate through the driving gear. During the positive rotation of the rotating frame, the bevel gear and the arc tooth rod are in contact and meshing, driving the winding roller to rotate. The winding roller pulls the sleeve upward through the pull rope and the connector, thereby pulling the screen plate upward. Then gear 2 contacts arc tooth 1, and gear 2 is driven to rotate. Gear 2 drives gear 1 to rotate, and gear 1 drives the sleeve rod to rotate, thereby driving the screen plate to deflect outward. The sleeve is driven to rotate in the opposite direction through arc tooth 2 and gear 3, so that the screen plate returns to the top of the mixing tank, so that when the scooping unit revolves in the positive direction, the screen plate is driven to rotate outward and then rotate inward to reset. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0024] Figure 2 It is a schematic diagram of the overall front view structure of the present invention;
[0025] Figure 3 This is a schematic diagram of the internal structure of the stirring tank in the present invention;
[0026] Figure 4 It is a schematic diagram of the structure of the scooping unit in the present invention;
[0027] Figure 5 It is a schematic diagram of the structure of the rotary mechanism in the present invention;
[0028] Figure 6 yes Figure 5 A local enlarged schematic diagram of point A;
[0029] Figure 7 It is a schematic diagram of the rotary frame structure of the present invention;
[0030] Figure 8 It is a schematic diagram of the broken line rod structure in the present invention.
[0031] In the figure: 100, bottom frame; 110, side support rod; 200, stirring tank; 300, top cover; 301, arc tooth 1; 302, arc tooth 2; 310, driving motor 1; 320, driving motor 2; 330, annular frame; 331, C-shaped rail; 340, stirring roller; 350, arc gear rod; 400, rotating mechanism; 410, rotating frame; 420, annular seat; 421, annular gear ring; 430, winding Line roller; 431, bevel gear; 440, folding line rod; 441, gear one; 442, groove part; 450, gear two; 451, limit wheel; 460, sleeve rod; 470, bottom rod; 471, vertical rod; 500, scooping unit; 510, connecting seat; 520, sleeve; 521, connecting head; 530, gear three; 540, screen plate; 541, partition; 550, rocker arm; 551, support rod. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0033] See also Figure 1 to Figure 6In an embodiment of the present invention, a concrete sand and gravel mixing, separation and recycling device includes a base frame 100, a mixing tank 200, a top cover 300 and a rotary mechanism 400. The top surface of the base frame 100 is fixedly connected with a plurality of side support rods 110. The top cover 300 is arranged above the base frame 100. The bottom end of the top cover 300 is rotatably connected with a stirring roller 340. An annular frame 330 is fixedly installed below the top cover 300. The annular frame 330 is fixedly connected to the top ends of the plurality of side support rods 110. A driving motor 310 is installed at the top of the top cover 300. The output end of the driving motor 310 is connected to the stirring roller. The top transmission connection of 340, the stirring tank 200 is installed at the bottom end of the base frame 100, the stirring tank 200 is used to receive the slurry water, the rotating mechanism 400 is rotatably connected to the bottom surface of the top cover 300, the rotating mechanism 400 includes a rotating frame 410, both sides of the bottom surface of the rotating frame 410 are fixedly connected with a folding rod 440, the bottom end of the folding rod 440 is rotatably connected with a sleeve rod 460, the outer side wall of the sleeve rod 460 is slidably sleeved with a scooping unit 500, and the top surface of the top cover 300 is installed with a driving motor 2 320, and the driving motor 2 320 is used to drive the rotating frame 410 to rotate.
[0034] Specifically, after adding concrete slurry into the mixing tank 200, the driving motor 1 310 drives the stirring roller 340 to rotate, and the slurry in the mixing tank 200 is stirred by the stirring roller 340, so that the slurry rotates in the positive direction, so that the sand and gravel in the slurry roll in the mixing tank 200, and the sand and gravel are screened and scooped by the scooping unit 500, and the driving motor 2 320 drives the rotating mechanism 400 to rotate positively, and the rotating mechanism 400 drives the two scooping units 500 to revolve in the positive direction, and the revolving speed of the scooping unit 500 is lower than the revolving speed of the slurry, so that the scooping unit 500 is convenient for screening the sand and gravel. When the scooping unit 500 revolves, the scooping unit 500 is driven to move up and down along the sleeve rod 460. After the scooping unit 500 moves up, the sleeve rod 460 is driven to rotate forward, so that the scooping unit 500 is deflected in the forward direction, so that the bottom end of the scooping unit 500 is deflected to the outer wall of the mixing tank 200, thereby unloading the sand and gravel on the scooping unit 500 to the outside of the mixing tank 200. Through the setting of the two scooping units 500, the sand and gravel in the mixing tank 200 are scooped cyclically, and separation is achieved during the tumbling process of the sand and gravel, thereby reducing the adhesion of slurry ash on the surface of the sand and gravel, and improving the cleanliness of the sand and gravel separation.
[0035] Embodiment 1
[0036] like Figure 3 to Figure 8As shown, in this embodiment, the scooping unit 500 includes a sleeve 520, which is slidably connected to the sleeve rod 460, a connecting seat 510 is fixedly connected to one side of the sleeve 520, a screen plate 540 is rotatably connected to one side of the connecting seat 510, a rocker arm 550 is fixedly connected to one side of one end of the screen plate 540, and a support rod 551 is fixedly connected to one end of the rocker arm 550, a gear 441 is provided at the top of the folding line rod 440, the gear 441 is rotatably connected to the bottom surface of the rotating frame 410, the gear 441 is rotatably connected to the top of the sleeve rod 460, a groove portion 442 is provided on the folding line rod 440, and one side of the bottom surface of the rotating frame 410 is rotatably connected. It is connected with gear 2 450, one side of the top cover 300 is fixedly connected with arc tooth 1 301, the outer side of the top cover 300 is fixedly connected with arc tooth 2 302 at one side of the arc tooth 1 301, gear 2 450 is meshed with gear 1 441, the outer side wall of the sleeve 520 is fixedly sleeved with gear 3 530, gear 3 530 is used to mesh with arc tooth 2 302, the top surface of the rotating frame 410 is fixedly connected with an annular seat 420, the annular seat 420 is rotatably connected to the top cover 300, the inner wall of the annular seat 420 is fixedly connected with an annular gear ring 421, the output end of the driving motor 2 320 is fixedly connected with a transmission gear, the transmission gear is meshed with the annular gear ring 421.
[0037] In a specific implementation, by setting the support rod 551 and the screen plate 540, when the sleeve rod 460 rotates, the sleeve 520 drives the screen plate 540 to rotate around the sleeve rod 460. By setting the rocker arm 550 and the support rod 551, when the screen plate 540 is located at the bottom end of the sleeve rod 460, the support rod 551 and the sleeve rod 460 are in conflict with each other, so that the screen plate 540 remains in an inclined state in the mixing tank 200, so that the screen plate 540 is convenient for intercepting sand and gravel. When the scooping unit 500 moves up along the sleeve rod 460, until the support rod 551 moves to the corresponding height of the groove portion 442, at this time, the support rod 551 and the groove portion 442 are in contact with each other. When they are parallel, the scooping unit 500 still maintains the original inclination angle. When the sleeve rod 460 rotates, the sleeve rod 460 drives the screen plate 540 to deflect outward, and the support rod 551 and the groove portion 442 are staggered at an angle, so that the screen plate 540 is tilted in the vertical direction, thereby dumping the sand and gravel to the outside of the mixing tank 200, that is, when the screen plate 540 deflects outward, the screen plate 540 deflects downward. When the screen plate 540 deflects inward, the screen plate 540 is driven to deflect upward through the setting of the rotating mechanism 400, so that the screen plate 540 unloads the sand and gravel outward and then rotates back to the mixing tank 200 to reset.
[0038] Embodiment 2
[0039] like Figures 4 to 8As shown, in this embodiment, the bottom end of the gear 2 450 is fixedly connected to the limit wheel 451, the inner wall of the annular frame 330 is fixedly connected to the C-shaped rail 331, the opening position of the C-shaped rail 331 is aligned with the position of the arc tooth 1 301, and winding rollers 430 are installed on both sides of the top surface of the rotating frame 410. A pull rope is wound and fixedly connected to the winding roller 430, and the outer wall of the top end of the sleeve 520 is rotatably connected to the connector 521. The bottom end of the pull rope is connected to one end of the connector 521. A bevel gear 431 is fixedly installed at one end of the winding roller 430, an arc gear rod 350 is fixedly connected to the bottom surface of the top cover 300, the bevel gear 431 is used for meshing transmission with the arc gear rod 350, a bottom rod 470 is rotatably connected between the bottom ends of the two sleeve rods 460, a vertical rod 471 is fixedly connected between the bottom rod 470 and the rotating frame 410, the top surface of the screen plate 540 is curved inward, and a partition plate 541 is fixedly connected to the middle position of the top surface of the screen plate 540.
[0040] In a specific implementation, the driving motor 2 320 drives the rotating frame 410 to rotate through the driving gear. During the forward rotation of the rotating frame 410, the bevel gear 431 is in contact and meshing with the arc gear rod 350, driving the winding roller 430 to rotate. The winding roller 430 pulls the sleeve 520 upward through the pull rope and the connecting head 521, thereby pulling the screen plate 540 upward. Subsequently, the gear 2 450 contacts the arc gear 1 301, and the gear 2 450 is driven to rotate. The gear 2 450 drives the gear 1 441 to rotate, and the gear 1 441 drives the sleeve rod 4 60 degrees, thereby driving the screen plate 540 to deflect outward. When the screen plate 540 deflects outward, the screen plate 540 is limited by the broken line rod 440, so that the bottom end of the screen plate 540 deflects downward, and then the gear three 530 is in contact with the arc tooth two 302, and the sleeve 520 is driven to rotate in the opposite direction through the arc tooth two 302 and the gear three 530, so that the screen plate 540 returns to the top of the mixing tank 200, and then the bevel gear 431 is disengaged from the arc tooth rod 350, and the scooping unit 500 is under the impact of its own weight and the water flow. The gear 3 530 is disengaged from the arc tooth 2 302 by the setting of the limiting wheel 451, and the limiting wheel 451 is in contact with the C-shaped rail 331, thereby limiting the rotation angle of the gear 2 450, thereby preventing the screen plate 540 from being impacted and rotated around the sleeve rod 460 by the water flow when the screen plate 540 rotates in the forward direction, thereby limiting the rotation angle of the screen plate 540 around the sleeve rod 460, and realizing that the two scooping units 500 circulate to scoop sand and gravel, and unload the sand and gravel to the mixing The outside of the tank 200 is used to continuously separate the sand and gravel from the slurry, thereby improving the cleanliness of the sand and gravel separation. The curved setting of the screen plate 540 facilitates the screen plate 540 to scoop up the sand and gravel, and reduces the screen plate 540 before it is unloaded and deflected downward, thereby improving the retention effect of the screen plate 540 on the sand and gravel. The slurry in the mixing tank 200 is continuously stirred by the stirring roller 340, so that the sand and gravel are continuously rolled in the mixing tank 200 during the scooping process by the screen plate 540, thereby reducing the adhesion of the mortar on the sand and gravel.
[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A concrete sand and gravel mixing, separation and recycling equipment, characterized in that: include A bottom frame (100) has a top surface fixedly connected to a plurality of side support rods (110); A top cover (300) is arranged above the bottom frame (100); the bottom end of the top cover (300) is rotatably connected to a stirring roller (340); a ring frame (330) is fixedly installed below the top cover (300); the ring frame (330) is fixedly connected to the top ends of a plurality of side support rods (110); a driving motor (310) is installed at the top end of the top cover (300); the output end of the driving motor (310) is drivingly connected to the top end of the stirring roller (340); A stirring tank (200) is installed at the bottom end of the base frame (100), and the stirring tank (200) is used to receive slurry water; The rotating mechanism (400) is rotatably connected to the bottom surface of the top cover (300), and the rotating mechanism (400) includes a rotating frame (410). Both sides of the bottom surface of the rotating frame (410) are fixedly connected with folding rods (440), and the bottom end of the folding rod (440) is rotatably connected with a sleeve rod (460), and the outer side wall of the sleeve rod (460) is slidably sleeved with a scooping unit (500). The top surface of the top cover (300) is installed with a second driving motor (320), and the second driving motor (320) is used to drive the rotating frame (410) to rotate.
2. The concrete sand and gravel mixing, separation and recycling equipment according to claim 1, characterized in that: The scooping unit (500) comprises a sleeve (520), the sleeve (520) and the sleeve rod (460) are slidably sleeved, one side of the sleeve (520) is fixedly connected to a connecting seat (510), one side of the connecting seat (510) is rotatably connected to a screen plate (540), one side of one end of the screen plate (540) is fixedly connected to a rocker arm (550), and one end of the rocker arm (550) is fixedly connected to a support rod (551).
3. The concrete sand and gravel mixing, separation and recycling equipment according to claim 2 is characterized in that: A gear 1 (441) is provided at the top end of the folding line rod (440), and the gear 1 (441) is rotatably connected to the bottom surface of the rotating frame (410). The gear 1 (441) is rotatably connected to the top end of the sleeve rod (460), and a groove portion (442) is provided on the folding line rod (440).
4. The concrete sand and gravel mixing, separation and recycling equipment according to claim 3 is characterized in that: One side of the bottom surface of the rotating frame (410) is rotatably connected to a gear 2 (450), one side of the top cover (300) is fixedly connected to an arc tooth 1 (301), the outer side of the top cover (300) is fixedly connected to an arc tooth 2 (302) at a position on the side of the arc tooth 1 (301), the gear 2 (450) is meshed with the gear 1 (441), and the outer side wall of the sleeve (520) is fixedly sleeved with a gear 3 (530), and the gear 3 (530) is used to mesh with the arc tooth 2 (302).
5. The concrete sand and gravel mixing, separation and recycling equipment according to claim 4, characterized in that: The top surface of the rotating frame (410) is fixedly connected with an annular seat (420), and the annular seat (420) is rotatably connected to the top cover (300). The inner wall of the annular seat (420) is fixedly connected with an annular gear ring (421), and the output end of the second driving motor (320) is fixedly connected with a transmission gear, and the transmission gear is meshed with the annular gear ring (421).
6. The concrete sand and gravel mixing, separation and recycling equipment according to claim 5, characterized in that: The bottom end of the second gear (450) is fixedly connected to a limiting wheel (451), and the inner wall of the annular frame (330) is fixedly connected to a C-shaped rail (331), and the opening position of the C-shaped rail (331) is aligned with the position of the arc tooth one (301).
7. The concrete sand and gravel mixing, separation and recycling equipment according to claim 5, characterized in that: Winding rollers (430) are installed on both sides of the top surface of the rotating frame (410), and a pull rope is wound and fixedly connected to the winding rollers (430). The top outer wall of the sleeve (520) is rotatably connected to a connector (521), and the bottom end of the pull rope is fixedly connected to one end of the connector (521). A bevel gear (431) is fixedly installed on one end of the winding roller (430), and an arc gear rod (350) is fixedly connected to the bottom surface of the top cover (300), and the bevel gear (431) is used for meshing transmission with the arc gear rod (350).
8. The concrete sand and gravel mixing, separation and recycling equipment according to claim 5, characterized in that: A bottom rod (470) is rotatably connected between the bottom ends of the two sleeve rods (460), and a vertical rod (471) is fixedly connected between the bottom rod (470) and the rotating frame (410).
9. The concrete sand and gravel mixing, separation and recycling equipment according to claim 5, characterized in that: The top surface of the screen plate (540) is inwardly curved.
10. The concrete sand and gravel mixing, separation and recycling equipment according to claim 9, characterized in that: A partition plate (541) is fixedly connected to the middle position of the top surface of the screen plate (540).