Pneumatic conveying equipment for concrete cooling ice slurry

Abstract

The invention discloses concrete cooling ice slurry pneumatic conveying equipment, and belongs to the technical field of conveying equipment. Comprising a pump body device, a pneumatic mechanism and a pipeline assembly, the pipeline assembly comprises a separating pipe and a hose, the separating pipe is in a multi-fold U-shaped pipe shape, a pipe head is fixedly installed at the output end of the hose, a dispersing device is fixedly installed at the outer end of the pipe head, and a first electromagnetic valve and a second electromagnetic valve are fixedly installed at the input end and the output end of the separating pipe respectively; liquid drainage components are arranged at the bent positions of the bottom sides of the separation pipes, the top ends of the separation pipes are fixedly connected with the top of the plant infrastructure through hoisting components, each liquid drainage component comprises a fourth electromagnetic valve and a drainage pipe, the drainage pipes are vertically and fixedly installed at the U-shaped bent positions of the bottom ends of the separation pipes and communicated with the interiors of the separation pipes, and the fourth electromagnetic valves are fixedly installed on the drainage pipes. The problem that the content of water in the ice slurry affects the proportion of water in the concrete and further affects the quality of the concrete is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of conveying equipment, and in particular to a pneumatic conveying equipment for concrete cooling ice slurry. Background Art

[0002] Concrete is an important material in the construction industry. During the concrete construction process, measures are taken to control the temperature of the concrete to prevent cracks, deformation and other problems caused by excessive temperature. In order to ensure that the temperature of the concrete is within the specified range when it is poured into the mold, it must be cooled to below the specified temperature before being loaded into the cement tanker. This ensures that after a long period of transportation, the concrete slurry can still maintain the temperature of the specified temperature. The ice cooling method is an important method to efficiently reduce the temperature of concrete. During the concrete production process, adding a certain amount of ice cubes to the concrete can quickly reduce the temperature of the concrete, thereby avoiding cracks, deformation and other problems in the concrete.

[0003] Since ice is hard, it is difficult to transport it over long distances. Usually, ice slurry mixed with ice and water is transported. For example, the invention patent with authorization announcement number CN118515089B discloses an ice slurry high-efficiency jetting and conveying equipment, which transports the ice slurry into the mixture through a pipeline structure for cooling. In the above scheme, the water content in the ice slurry cannot be reduced, thereby affecting the proportion of water in the concrete, and further affecting the quality of the concrete. In addition, the water content in the ice slurry is too high, and the cooling effect is poor. Summary of the invention

[0004] The object of the present invention is to provide a pneumatic conveying device for cooling concrete ice slurry, so as to solve the problem in the above background technology that the water content in the ice slurry cannot be reduced, thereby affecting the proportion of water in the concrete and further affecting the quality of the concrete.

[0005] To achieve the above object, the present invention provides the following technical solutions: A concrete cooling ice slurry pneumatic conveying device, comprising: a pump body device, a pneumatic mechanism and a pipeline assembly, wherein the output end of the pump body device is connected and conducted with the input end of the pipeline assembly; The pipeline assembly includes a separation tube and a hose, the separation tube is in a multi-fold U-shaped tube, the input end of the separation tube is fixedly connected and conducted with the output end of the pump body device, the input end of the hose is fixedly connected and conducted with the output end of the separation tube, the output end of the hose is fixedly installed with a pipe head, and the outer end of the pipe head is fixedly installed with a dispersion device; The first solenoid valve and the second solenoid valve are respectively fixedly installed at the input end and the output end of the separation tube; The bottom bend of the separation pipe is provided with a drainage component, and the top of the separation pipe is fixedly connected to the top of the plant infrastructure through a hoisting component; The liquid discharge component includes a fourth solenoid valve and a drain pipe. The drain pipe is vertically fixedly installed at the U-shaped bend at the bottom end of the separation pipe and is connected to the inside of the separation pipe. The fourth solenoid valve is fixedly installed on the drain pipe.

[0006] Preferably, the pneumatic mechanism includes a pressure tank, an air compressor device, an air pipe and a third solenoid valve. A bracket is fixedly installed at the bottom of the pressure tank. The air compressor device is fixedly installed at the bottom of the pressure tank, and the port is connected to the inside of the pressure tank. The air pipe input end is fixedly connected to the pressure tank output end. The third solenoid valve is fixedly installed on the air pipe, and the air pipe output end is fixedly connected to the side of the separation tube input end.

[0007] Preferably, the lifting components include a truss, multiple hangers and multiple connecting parts, and the multiple connecting parts are fixedly installed on the side of the separation pipe. The top of the truss is fixedly connected to the top of the factory building infrastructure, and the bottom ends of the multiple hangers are respectively fixedly connected to the upper sides of the multiple connecting parts, and the top of the hanger is fixedly connected to the bottom end of the truss.

[0008] Preferably, the separation tube is equipped with multiple groups of compression and discharge mechanisms, and the compression and discharge mechanisms include a cylinder, a slider, multiple semipermeable membranes, a slide rod and multiple pairs of protective nets. The cylinder is vertically fixedly installed on the bottom side of the vertical section of the separation tube, and the inner diameter is the same as the inner diameter of the separation tube. The top of the cylinder is connected to the separation tube, the slide rod is vertically slidably sleeved in the middle of the cylinder and passes through the cylinder, the slider is vertically slidably sleeved in the cylinder and fixedly connected to the top of the slide rod, a plurality of through holes are opened in the slider, the multiple semipermeable membranes are respectively fixedly installed in the multiple through holes, and the conduction direction is from top to bottom, and multiple pairs of protective nets are respectively fixedly installed in the multiple through holes, each pair of protective nets is respectively located on the upper and lower sides of the semipermeable membrane, and the bottom ends of multiple slide rods are connected by lifting components.

[0009] Preferably, the lifting component includes a connecting frame, a first screw rod and a motor, the bottom ends of the plurality of sliding rods are fixedly connected to the connecting frame, the motor is fixedly installed on the bottom side of the truss, the first screw rod is vertically arranged, the top end is fixedly connected to the output end of the motor through a coupling, and the bottom end is threadedly sleeved with the middle part of the truss.

[0010] Preferably, a cavity is opened in the side wall of the separation tube provided with a pressure discharge mechanism, and a plurality of one-way valves are fixedly installed on the side wall of the cavity. The conduction direction is from the separation tube to the cavity. Overflow holes are symmetrically opened on the side wall of the drainage pipe, and both overflow holes are connected to the cavity. A drainage component is installed on the top of the drainage pipe.

[0011] Preferably, the drainage component includes a rotating shaft, a impeller and two turbines. The rotating shaft is horizontally rotatably installed on the top of the drain pipe, and both ends are inserted into the cavity. The two turbines are respectively fixedly sleeved on both ends of the rotating shaft. The impeller is fixedly sleeved in the middle of the rotating shaft and is located at the top input end of the drain pipe.

[0012] Preferably, the dispersion device includes two connecting rods, a cone block, multiple baffle rods, a disk body, multiple plug blocks, a second screw rod and multiple support rods. The cone block is fixedly connected to the end of the pipe head through two connecting rods. The multiple baffle rods are distributed in a ring shape, and the front ends are hinged to the cone block. The multiple plug blocks are respectively fixedly installed on the inner sides of the multiple baffle rods. The multiple support rods are distributed in a ring shape, and the two ends are respectively hinged to the plug blocks and the sides of the disk body. The second screw rod is threadedly sleeved in the middle of the disk body, and the end is rotatably sleeved on the front end of the cone block.

[0013] The beneficial effects of the present invention are as follows: 1. After the ice slurry reaches the separation tube, after a period of standing, the ice and water can be separated into layers, and then the water is discharged from the bottom side, thereby achieving solid-liquid separation, reducing the water content, thereby reducing its impact on the water ratio in the concrete, and improving the cooling effect; 2. With the cooperation of the compression and discharge mechanism, the semi-permeable effect is used to prevent water from passing through the semi-permeable membrane from bottom to top, thereby achieving a complete separation of water and ice. As the slider moves downward, the water is discharged faster, thereby achieving a rapid separation of ice and water; 3. During the drainage process, under the impact of the water flow, the drainage component operates, producing a suction effect on the cavity, the one-way valve is turned on, and the ice cubes can be further drained when passing through multiple one-way valves. After the water enters the cavity, it is discharged from the overflow holes on both sides of the drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a concrete cooling ice slurry pneumatic conveying device proposed by the present invention; Figure 2 This is a schematic diagram of a partial cross-sectional structure of a concrete cooling ice slurry pneumatic conveying device proposed by the present invention; Figure 3 for Figure 1 A magnified view of the structure at A; Figure 4 for Figure 2 A magnified view of the structure at B in FIG. Figure 5 for Figure 2 A magnified view of the structure at C in FIG. Figure 6 for Figure 2 Enlarged view of the structure at D in .

[0015] In the figure: 1, pump body device; 2, separation pipe; 3, hose; 4, pipe head; 5, first solenoid valve; 6, second solenoid valve; 7, pressure tank; 8, air compressor device; 9, air pipe; 10, third solenoid valve; 11, bracket; 12, truss; 13, suspension rod; 14, connecting piece; 15, fourth solenoid valve; 16, drain pipe; 17, cylinder; 18, slider; 19, semipermeable membrane; 20, slide rod; 21, protective net; 22, through hole; 23, connecting frame; 24, first screw; 25, motor; 26, cavity; 27, one-way valve; 28, overflow hole; 29, rotating shaft; 30, impeller; 31, turbine; 32, connecting rod; 33, cone block; 34, stop rod; 35, disk; 36, plug block; 37, second screw; 38, support rod. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, what is described is only a 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.

[0017] See also Figure 1-Figure 6 , a concrete cooling ice slurry pneumatic conveying device, comprising: a pump body device 1, a pneumatic mechanism and a pipeline assembly, wherein the output end of the pump body device 1 is connected and conducted with the input end of the pipeline assembly; The pipeline assembly includes a separation tube 2 and a hose 3. The separation tube 2 is a multi-fold U-shaped tube. The input end of the separation tube 2 is fixedly connected and conducted with the output end of the pump body device 1. The input end of the hose 3 is fixedly connected and conducted with the output end of the separation tube 2. The output end of the hose 3 is fixedly installed with a pipe head 4, and the outer end of the pipe head 4 is fixedly installed with a dispersion device. The input end of the pump device 1 is connected to an external ice storage device; The first solenoid valve 5 and the second solenoid valve 6 are fixedly installed at the input end and the output end of the separation tube 2 respectively; The bottom bend of the separation pipe 2 is provided with a drainage component, and the top of the separation pipe 2 is fixedly connected to the top of the plant infrastructure through a hoisting component; The liquid discharge component includes a fourth solenoid valve 15 and a drain pipe 16 . The drain pipe 16 is vertically fixedly installed at the U-shaped bend at the bottom end of the separation pipe 2 and is connected to the inside of the separation pipe 2 . The fourth solenoid valve 15 is fixedly installed on the drain pipe 16 .

[0018] Each electrical device is powered by an external power supply, and the entire device is controlled by a control terminal. Since the control terminal is a commonly used device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0019] The pneumatic mechanism includes a pressure tank 7, an air compressor device 8, an air pipe 9 and a third solenoid valve 10. A bracket 11 is fixedly installed at the bottom of the pressure tank 7. The air compressor device 8 is fixedly installed at the bottom of the pressure tank 7, and the port is connected to the inside of the pressure tank 7. The input end of the air pipe 9 is fixedly connected to the output end of the pressure tank 7. The third solenoid valve 10 is fixedly installed on the air pipe 9, and the output end of the air pipe 9 is fixedly connected to the side of the input end of the separation tube 2. The air compressor device 8 can deliver high-pressure air into the pressure tank 7. When the third solenoid valve 10 is opened, the high-pressure gas flows out from the air pipe 9, rushes into the separation tube 2, and pushes the ice cubes out.

[0020] When the device is used to transport ice slurry, the pump device 1 draws ice slurry from the ice storage place and sends it into the separation pipe 2. After a preset amount of ice slurry is sent into the separation pipe 2, the pump device 1 stops running.

[0021] After a period of stillness, the ice cubes will gather on the upper side of the separation tube 2, and the water will gather on the bottom side of the separation tube 2, realizing solid-liquid separation. Then the first solenoid valve 5 and the second solenoid valve 6 are closed, and the third solenoid valve 10 and the fourth solenoid valve 15 are opened, and a certain airflow is introduced. Subsequently, the third solenoid valve 10 is cut off and closed, and the water is discharged from the drain pipe 16, so that only ice cubes remain in the separation tube 2, thereby ensuring the concentration of the ice cubes.

[0022] Through the above method, after the ice slurry reaches the separation tube 2, after a period of standing, the ice and water can be separated into layers, and then the water is discharged from the bottom side, thereby achieving solid-liquid separation and reducing the water content, thereby reducing its impact on the water ratio in the concrete. The ice content increases, which can improve the refrigeration and cooling effect.

[0023] The lifting components include a truss 12, multiple hangers 13 and multiple connecting parts 14. The multiple connecting parts 14 are fixedly installed on the side of the separation pipe 2. The top of the truss 12 is fixedly connected to the top of the factory building infrastructure, the bottom ends of the multiple hangers 13 are respectively fixedly connected to the upper sides of the multiple connecting parts 14, and the top of the hanger 13 is fixedly connected to the bottom end of the truss 12.

[0024] The separation tube 2 is equipped with multiple groups of compression and discharge mechanisms, which include a cylinder 17, a slider 18, multiple semipermeable membranes 19, a slide bar 20 and multiple pairs of protective nets 21. The cylinder 17 is vertically fixedly installed on the bottom side of the vertical section of the separation tube 2, and its inner diameter is the same as the inner diameter of the separation tube 2. The top of the cylinder 17 is connected to the separation tube 2. The slide bar 20 is vertically slidably sleeved in the middle of the cylinder 17 and penetrates the cylinder 17. The slider 18 is vertically slidably sleeved in the cylinder 17 and is fixedly connected to the top of the slide bar 20. Multiple through holes 22 are opened in the slider 18. Multiple semipermeable membranes 19 are respectively fixedly installed in the multiple through holes 22, and the conduction direction is from top to bottom. Multiple pairs of protective nets 21 are respectively fixedly installed in the multiple through holes 22, and each pair of protective nets 21 is respectively located on the upper and lower sides of the semipermeable membrane 19. The bottom ends of multiple slide bars 20 are connected by lifting components.

[0025] The lifting components include a connecting frame 23, a first screw rod 24 and a motor 25. The bottom ends of the multiple sliding rods 20 are fixedly connected to the connecting frame 23. The motor 25 is fixedly installed on the bottom side of the truss 12. The first screw rod 24 is vertically arranged, and the top end is fixedly connected to the output end of the motor 25 through a coupling, and the bottom end is threadedly sleeved with the middle part of the truss 12.

[0026] When ice and water are separated, the motor 25 is started to drive the first screw 24 to rotate. The first screw 24 enables the connecting frame 23 to drive the multiple slide bars 20 to move upward. The multiple slide bars 20 drive the slider 18 to move upward, pushing the ice cubes upward, thereby accelerating the separation of the ice cubes from the water.

[0027] After the slide bar 20 moves to the upper limit position, the motor 25 stops, and the ice on the upper side of the slider 18 can be drained. After the fourth solenoid valve 15 is opened, when draining, the motor 25 rotates in the opposite direction to move the slide bar 20 downward and the slider 18 downward. At this time, the water is located on the lower side of the semipermeable membrane 19, and due to the semipermeability, the water cannot pass through the semipermeable membrane 19 from bottom to top, thereby achieving a complete separation of the water and the ice cubes. As the slider 18 moves downward, the water is discharged faster, thereby achieving a rapid separation of ice and water.

[0028] A cavity 26 is provided in the side wall of the separation tube 2 provided with a pressure discharge mechanism, and a plurality of one-way valves 27 are fixedly installed on the side wall of the cavity 26. The flow direction is from the separation tube 2 to the cavity 26. Overflow holes 28 are symmetrically provided on the side wall of the drain pipe 16. Both overflow holes 28 are connected to the cavity 26. A drainage component is installed on the top of the drain pipe 16.

[0029] The drainage component includes a rotating shaft 29, a impeller 30 and two turbines 31. The rotating shaft 29 is horizontally rotatably installed on the top of the drain pipe 16, and both ends are inserted into the cavity 26. The two turbines 31 are fixedly sleeved on both ends of the rotating shaft 29, and the impeller 30 is fixedly sleeved in the middle of the rotating shaft 29 and is located at the top input end of the drain pipe 16.

[0030] During drainage, water flows through the top of the drain pipe 16 and impacts the impeller 30. The impeller 30 rotates, driving the two turbines 31 to rotate through the rotating shaft 29, thereby producing a suction effect on the cavity 26. The one-way valve 27 is turned on, and the ice cubes can be further drained when passing through multiple one-way valves 27. After the water enters the cavity 26, it is discharged from the overflow holes 28 on both sides of the drain pipe 16.

[0031] The dispersion device includes two connecting rods 32, a cone block 33, multiple baffle rods 34, a disk body 35, multiple plug blocks 36, a second screw rod 37 and multiple struts 38. The cone block 33 is fixedly connected to the end of the pipe head 4 through the two connecting rods 32. The multiple baffle rods 34 are distributed in a ring shape, and the front ends are hinged to the cone block 33. The multiple plug blocks 36 are respectively fixedly installed on the inner sides of the multiple baffle rods 34. The multiple struts 38 are distributed in a ring shape, and the two ends are respectively hinged to the plug blocks 36 and the sides of the disk body 35. The second screw rod 37 is threadedly sleeved in the middle of the disk body 35, and the end is rotatably sleeved on the front end of the cone block 33.

[0032] After the ice-water separation is completed, the first solenoid valve 5 and the fourth solenoid valve 15 are turned off, the second solenoid valve 6 and the third solenoid valve 10 are turned on, and the pressure tank 7 releases the air pressure. Through the pneumatic thrust, the ice cubes are quickly pushed out of the separation tube 2 and finally discharged through the hose 3 to cool the concrete.

[0033] During the discharge process, due to the impact of aerodynamic force, the ice pile will hit the cone block 33 and be dispersed for the first time. As the ice moves, it will hit the blocking rod 34 again and be broken up again, so as to enter the concrete in a dispersed state and fully cool the concrete.

[0034] The second screw 37 is rotated to drive the disk 35 to move, and the disk 35 approaches or moves away from the cone block 33, so that the multiple support rods 38 change their inclination angles, thereby changing the inclination angles of the multiple blocking rods 34, thereby adjusting the dispersion degree of the ice cubes according to the size of the concrete area, so that the ice cubes can be fully dispersed to different areas.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete cooling ice slurry pneumatic conveying device, comprising: A pump body device (1), a pneumatic mechanism and a pipeline assembly, wherein the output end of the pump body device (1) is connected to the input end of the pipeline assembly; The feature is that the pipeline assembly comprises a separation tube (2) and a hose (3), the separation tube (2) is in a multi-fold U-shaped tube shape, the input end of the separation tube (2) is fixedly connected and conducted with the output end of the pump body device (1), the input end of the hose (3) is fixedly connected and conducted with the output end of the separation tube (2), the output end of the hose (3) is fixedly mounted with a pipe head (4), and the outer end of the pipe head (4) is fixedly mounted with a dispersion device; A first solenoid valve (5) and a second solenoid valve (6) are fixedly mounted on the input end and the output end of the separation tube (2), respectively; The bottom bend of the separation pipe (2) is provided with a drainage component, and the top of the separation pipe (2) is fixedly connected to the top of the plant infrastructure via a hanging component; The liquid discharge component comprises a fourth solenoid valve (15) and a drainage pipe (16); the drainage pipe (16) is vertically fixedly mounted at a U-shaped bend at the bottom end of the separation pipe (2) and is in communication with the interior of the separation pipe (2); and the fourth solenoid valve (15) is fixedly mounted on the drainage pipe (16).

2. The concrete cooling ice slurry pneumatic conveying equipment according to claim 1 is characterized by: The pneumatic mechanism comprises a pressure tank (7), an air compressor device (8), an air pipe (9) and a third solenoid valve (10); a bracket (11) is fixedly mounted on the bottom of the pressure tank (7); the air compressor device (8) is fixedly mounted on the bottom of the pressure tank (7), and a port is connected to the inside of the pressure tank (7); an input end of the air pipe (9) is fixedly connected to an output end of the pressure tank (7); the third solenoid valve (10) is fixedly mounted on the air pipe (9), and an output end of the air pipe (9) is fixedly connected to a side portion of an input end of a separation tube (2).

3. The concrete cooling ice slurry pneumatic conveying equipment according to claim 1 is characterized by: The hoisting components include a truss (12), a plurality of suspension rods (13) and a plurality of connecting members (14); the plurality of connecting members (14) are fixedly mounted on the side of the separation tube (2); the top of the truss (12) is fixedly connected to the top of the plant infrastructure; the bottom ends of the plurality of suspension rods (13) are respectively fixedly connected to the upper sides of the plurality of connecting members (14); and the top ends of the suspension rods (13) are fixedly connected to the bottom ends of the truss (12).

4. The concrete cooling ice slurry pneumatic conveying equipment according to claim 3 is characterized by: The separation tube (2) is provided with a plurality of groups of compression and discharge mechanisms, the compression and discharge mechanisms comprising a cylinder (17), a slider (18), a plurality of semipermeable membranes (19), a slide rod (20) and a plurality of pairs of protective nets (21); the cylinder (17) is vertically fixedly mounted on the bottom side of the vertical section of the separation tube (2) and has an inner diameter that is the same as that of the separation tube (2); the top end of the cylinder (17) is in communication with the separation tube (2); the slide rod (20) is vertically slidably sleeved on the middle part of the cylinder (17) and penetrates the cylinder (17); The slider (18) is vertically slidably sleeved in the cylinder (17) and fixedly connected to the top of the slide rod (20). A plurality of through holes (22) are provided in the slider (18). The plurality of semipermeable membranes (19) are respectively fixedly installed in the plurality of through holes (22), and the conducting direction is from top to bottom. A plurality of pairs of protective nets (21) are respectively fixedly installed in the plurality of through holes (22). Each pair of protective nets (21) is respectively located on the upper and lower sides of the semipermeable membrane (19). The bottom ends of the plurality of slide rods (20) are connected via a lifting component.

5. The concrete cooling ice slurry pneumatic conveying equipment according to claim 4 is characterized by: The lifting component comprises a connecting frame (23), a first screw rod (24) and a motor (25); the bottom ends of the plurality of sliding rods (20) are fixedly connected to the connecting frame (23); the motor (25) is fixedly mounted on the bottom side of the truss (12); the first screw rod (24) is vertically arranged, the top end of which is fixedly connected to the output end of the motor (25) via a coupling, and the bottom end of which is threadedly sleeved to the middle of the truss (12).

6. The concrete cooling ice slurry pneumatic conveying equipment according to claim 4, characterized in that: A cavity (26) is provided in the side wall of the separation tube (2) provided with a pressure discharge mechanism, and a plurality of one-way valves (27) are fixedly installed on the side wall of the cavity (26), and the flow direction is from the separation tube (2) to the cavity (26). Overflow holes (28) are symmetrically provided on the side wall of the drainage pipe (16), and both overflow holes (28) are in communication with the cavity (26). A drainage component is installed on the top of the drainage pipe (16).

7. The concrete cooling ice slurry pneumatic conveying equipment according to claim 6, characterized in that: The drainage component comprises a rotating shaft (29), a pulsator (30) and two turbines (31); the rotating shaft (29) is mounted on the top of the drainage pipe (16) for horizontal rotation, and both ends of the rotating shaft (29) penetrate into the cavity (26); the two turbines (31) are respectively fixedly sleeved on the two ends of the rotating shaft (29); the pulsator (30) is fixedly sleeved on the middle of the rotating shaft (29) and is located at the top input end of the drainage pipe (16).

8. The concrete cooling ice slurry pneumatic conveying equipment according to claim 1, characterized in that: The dispersion device comprises two connecting rods (32), a cone block (33), a plurality of blocking rods (34), a disk body (35), a plurality of insert blocks (36), a second screw rod (37) and a plurality of support rods (38). The cone block (33) is fixedly connected to the end of the pipe head (4) through the two connecting rods (32). The plurality of blocking rods (34) are distributed in an annular shape and the front ends are hinged to the cone block (33). The plurality of insert blocks (36) are respectively fixedly mounted on the inner sides of the plurality of blocking rods (34). The plurality of support rods (38) are distributed in an annular shape and the two ends are respectively hinged to the insert blocks (36) and the side of the disk body (35). The second screw rod (37) is threadedly sleeved in the middle of the disk body (35) and the end is rotatably sleeved on the front end of the cone block (33).

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