Phosphogypsum pipe forming die

Abstract

The invention relates to the technical field of ardealite pipe forming, in particular to an ardealite pipe forming mold which comprises a base. The forming mechanism comprises an annular groove formed in the base, two arc-shaped plates are slidably connected to the inner wall of the annular groove, two first electric push rods are fixedly connected to the side walls of the two arc-shaped plates, the movable ends of the two first electric push rods are jointly and fixedly connected with an outer mold, and an L-shaped plate is fixedly connected to the upper end of the base; the lower end of the L-shaped plate is rotationally connected with a first rod, and the side wall of the first rod is fixedly connected with an inner mold. The forming mechanism is arranged, after a gypsum pipe is cooled and formed, four first electric push rods are adjusted to contract, two outer molds are driven to be separated from an inner mold, then two second electric push rods are adjusted to move downwards, a sealing ring moves downwards, the ardealite pipe located on the side wall of the inner mold is extruded downwards, and then the ardealite pipe flows out through a discharging opening; and the formed ardealite pipe can be conveniently taken out.

Description

Technical Field

[0001] The invention relates to the technical field of phosphogypsum pipe molding, and in particular to a phosphogypsum pipe molding die. Background Art

[0002] There are two main colors of phosphogypsum: gray-black and gray-white. The random discharge and accumulation of phosphogypsum has seriously damaged the ecological environment, not only polluting groundwater resources but also causing waste of land resources. Currently, phosphogypsum is recycled and reused, and using phosphogypsum to make pipes is one of its uses.

[0003] Currently, when phosphogypsum is made into pipes, the phosphogypsum is mixed with other materials, melted, and then injected into a mold for cooling and forming. Existing molds are all integrally formed, resulting in the need for workers to invert the mold after the phosphogypsum pipe is cooled and formed, and then continuously knock on the mold to take out the formed phosphogypsum pipe. This method increases the work intensity while reducing the forming efficiency of the phosphogypsum pipe. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a phosphogypsum pipe forming mold.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A phosphogypsum pipe forming mold, comprising:

[0007] Base;

[0008] A molding mechanism, the molding mechanism includes an annular groove opened on the base, the inner wall of the annular groove is slidably connected to two arc plates, the side walls of the two arc plates are fixedly connected to two first electric push rods, the movable ends of the two first electric push rods are commonly fixedly connected to an outer mold, the upper end of the base is fixedly connected to an L-shaped plate, the lower end of the L-shaped plate is rotatably connected to a first rod, the side wall of the first rod is fixedly connected to an inner mold, the inner mold is located between the two outer molds, the side wall of the first rod above the inner mold is fixedly connected to a fixed plate, the lower end of the fixed plate is fixedly connected to two second electric push rods, the movable ends of the two second electric push rods are commonly fixedly connected to a sealing ring, the lower end of the sealing ring passes through and is fixedly connected to a feeding pipe, the inner side wall of the sealing ring is tightly fitted with the side wall of the inner mold, and the outer side wall of the sealing ring is tightly fitted with the inner side walls of the two outer molds.

[0009] Preferably, it also includes a rotating mechanism, which includes a ring rotatably connected to the upper end of the L-shaped plate, the side wall of the first rod is located in the ring, the side wall of the ring is fixedly connected to the inner walls of the two arc-shaped plates respectively through two fixing plates, the upper end of the L-shaped plate is fixedly connected to a motor through a support plate, and the motor is provided with a driving mechanism for driving the first rod and the ring to rotate.

[0010] Preferably, the driving mechanism includes a first bevel gear fixedly connected to the side wall of the movable shaft of the motor, the side wall of the first rod is fixedly connected to the second bevel gear, the side wall of the ring is fixedly connected to the third bevel gear, the first bevel gear is located between the second bevel gear and the third bevel gear, the side wall of the first bevel gear is meshed with the side wall of the second bevel gear, and the side wall of the first bevel gear is meshed with the side wall of the third bevel gear.

[0011] Preferably, the outer side wall of the outer mold is elastically connected to a pressure plate through a plurality of first springs, the side wall of the pressure plate close to the outer mold is fixedly connected to a plurality of collision rods, the lower ends of the two fixed plates are rotatably connected to a second rod, the side wall of the second rod is fixedly connected to a convex column, and the convex column presses the pressure plate during rotation.

[0012] Preferably, the inner side walls of the two arc-shaped plates are rotatably connected to a third rod, the side wall of the third rod away from the arc-shaped plate is fixedly connected to a fourth bevel gear, the lower end of the second rod is fixedly connected to a fifth bevel gear, and the fourth bevel gear is meshed with the fifth bevel gear.

[0013] Preferably, an arc-shaped toothed plate is fixedly connected to the bottom of the annular groove close to the arc-shaped plate, a gear is fixedly connected to the side wall of the third rod, and the arc-shaped toothed plate is meshed with the gear.

[0014] Preferably, the upper end of the L-shaped plate is fixedly connected to an air extraction frame, the inner wall of the air extraction frame is sealingly and slidably connected to a slide plate, the lower end of the slide plate is elastically connected to the inner bottom of the air extraction frame via a plurality of second springs, the inner bottom of the air extraction frame is connected to the lower end of the sealing ring via an air extraction pipe, and an air outlet pipe is fixedly connected to the lower part of the inner wall of the air extraction frame.

[0015] Preferably, the upper end of the slide plate is fixedly connected to a fixing rod, the upper end of the fixing rod is fixedly connected to a wedge plate, and a wedge disk is fixedly connected to the upper side wall of the first rod, the wedge disk is semicircular, and the wedge disk squeezes the wedge plate during rotation.

[0016] Preferably, a one-way valve is installed in the exhaust pipe to allow gas to enter the exhaust frame from the closed space composed of two outer molds, the inner mold and the sealing ring, and a one-way valve is installed in the outlet pipe to allow gas to be discharged from the exhaust frame.

[0017] Preferably, a discharge port is formed through the lower end of the base, and the lower surfaces of the inner mold and the two outer molds are located in the discharge port.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. A molding mechanism is set. After the gypsum pipe is cooled and formed, the four first electric push rods are adjusted to contract, driving the two outer molds to separate from the inner mold respectively. Then, the two second electric push rods are adjusted to move downward, and the sealing ring moves downward to squeeze the phosphogypsum pipe located on the side wall of the inner mold downward. Then, the phosphogypsum pipe flows out through the discharge port, which is convenient for taking out the formed phosphogypsum pipe. This avoids the need for workers to invert the mold and then continuously knock on the mold to take out the formed phosphogypsum pipe after the phosphogypsum pipe is cooled and formed in the prior art. This method increases the work intensity while reducing the molding efficiency of the phosphogypsum pipe.

[0020] 2. Two second electric push rods are provided at the same time, so that the height position of the sealing ring on the side wall of the inner mold can be adjusted, and then the height of the entire enclosed space can be adjusted, so that phosphogypsum pipes of different heights can be formed, thereby increasing the application range of the mold.

[0021] 3. A rotating mechanism and a driving mechanism are set up so that the inner mold and the two outer molds can rotate in opposite directions to prevent the phosphogypsum pipe from sticking to the side walls of the inner mold and the inner walls of the two outer molds during molding, which may cause damage to the phosphogypsum pipe when it is subsequently taken out, affecting its use.

[0022] 4. A pressing plate and a collision rod are provided. During the rotation of the arc plate, the pressing plate intermittently moves toward and away from the outer mold under the action of the elastic force of multiple first springs and the extrusion force of the convex column, driving multiple collision rods to intermittently collide and strike the side wall of the outer mold, so that the molten liquid of the phosphogypsum pipe is evenly distributed, and the bubbles that may exist in the molten liquid of the phosphogypsum pipe can also be vibrated and discharged, thereby improving the molding quality of the phosphogypsum pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a phosphogypsum pipe forming mold proposed by the present invention;

[0024] Figure 2 for Figure 1 The vertical section view of the structure on the left;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0026] Figure 4 for Figure 2 A schematic diagram of the structure enlarged at B in the middle;

[0027] Figure 5 for Figure 1 Schematic diagram of the structure after the middle inner mold and two outer molds are separated;

[0028] Figure 6 for Figure 1 A vertical cross-sectional structural diagram of the middle front;

[0029] Figure 7 for Figure 6 A schematic diagram of the structure enlarged at C in the middle;

[0030] Figure 8 for Figure 1 Schematic diagram of the rear view structure.

[0031] In the figure: 1, base; 2, annular groove; 3, arc plate; 4, first electric push rod; 5, outer mold; 6, L-shaped plate; 7, first rod; 8, inner mold; 9, fixed plate; 10, second electric push rod; 11, sealing ring; 12, feed pipe; 13, sleeve ring; 14, fixed plate; 15, motor; 16, first bevel gear; 17, second bevel gear; 18, third bevel gear; 19, first spring; 20, pressure plate; 21, collision rod; 22, second rod; 23, boss; 24, third rod; 25, fourth bevel gear; 26, fifth bevel gear; 27, arc tooth plate; 28, gear; 29, exhaust frame; 30, slide plate; 31, second spring; 32, air outlet pipe; 33, exhaust pipe; 34, fixed rod; 35, wedge plate; 36, wedge disk. 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] Reference Figure 1 - Figure 8 , a phosphogypsum pipe forming mold, including a base 1.

[0034] The molding mechanism includes an annular groove 2 provided on the base 1, two arc plates 3 are slidably connected to the inner wall of the annular groove 2, two first electric push rods 4 are fixedly connected to the side walls of the two arc plates 3, and the movable ends of the two first electric push rods 4 are commonly fixedly connected to an outer mold 5, an L-shaped plate 6 is fixedly connected to the upper end of the base 1, and a first rod 7 is rotatably connected to the lower end of the L-shaped plate 6, and the side wall of the first rod 7 is fixedly connected to an inner mold 8, and the inner mold 8 is located between the two outer molds 5. The side wall of the first rod 7 located above the inner mold 8 is fixedly connected to a fixed plate 9, and the lower end of the fixed plate 9 is fixedly connected to two second electric push rods 10, and the movable ends of the two second electric push rods 10 are commonly fixedly connected to a sealing ring 11, and the lower end of the sealing ring 11 is penetrated and fixedly connected to a feeding pipe 12 (such as Figure 6 shown).

[0035] The inner wall of the sealing ring 11 is tightly fitted with the side wall of the inner mold 8 , and the outer wall of the sealing ring 11 is tightly fitted with the inner walls of the two outer molds 5 .

[0036] The lower end of the base 1 is provided with a discharge port, and the lower surfaces of the inner mold 8 and the two outer molds 5 are located in the discharge port (such as Figure 1 and Figure 2 shown).

[0037] During the forming process of the phosphogypsum pipe, the two outer molds 5 and the inner mold 8 are tightly fitted together. At this time, the closed space composed of the two outer molds 5, the inner mold 8 and the sealing ring 11 is the area where the phosphogypsum pipe is cooled and formed (such as Figure 1 and Figure 2 As shown), after the gypsum pipe is cooled and formed, the four first electric push rods 4 are adjusted to contract, driving the two outer molds 5 to separate from the inner mold 8 respectively (as shown in FIG. Figure 5 As shown), the two second electric push rods 10 are adjusted to move downward, and the sealing ring 11 is moved downward to squeeze the phosphogypsum pipe located on the side wall of the inner mold 8 downward, and then the phosphogypsum pipe flows out through the discharge port, so as to facilitate the removal of the formed phosphogypsum pipe. This avoids the need for workers to invert the mold after the phosphogypsum pipe is cooled and formed in the prior art, and then continuously knock on the mold to take out the formed phosphogypsum pipe. This method increases the work intensity while reducing the forming efficiency of the phosphogypsum pipe.

[0038] At the same time, two second electric push rods 10 are provided to adjust the height position of the sealing ring 11 on the side wall of the inner mold 8, thereby adjusting the height of the entire enclosed space, so that phosphogypsum pipes of different heights can be formed, thereby increasing the application range of the mold.

[0039] The rotating mechanism also includes a sleeve 13 rotatably connected to the upper end of the L-shaped plate 6, and the side wall of the first rod 7 is located in the sleeve 13 (such as Figure 3 As shown), the side walls of the collar 13 are fixedly connected to the inner walls of the two arc-shaped plates 3 through two fixing plates 14 respectively, and the upper end of the L-shaped plate 6 is fixedly connected to a motor 15 through a support plate. The motor 15 is provided with a driving mechanism for driving the first rod 7 and the collar 13 to rotate.

[0040] The driving mechanism includes a first bevel gear 16 fixedly connected to the side wall of the movable shaft of the motor 15, a second bevel gear 17 fixedly connected to the side wall of the first rod 7, and a third bevel gear 18 fixedly connected to the side wall of the collar 13. The first bevel gear 16 is located between the second bevel gear 17 and the third bevel gear 18, and the side wall of the first bevel gear 16 is meshed with the side wall of the second bevel gear 17, and the side wall of the first bevel gear 16 is meshed with the side wall of the third bevel gear 18.

[0041] During the forming process of the phosphogypsum pipe, the driving motor 15 intermittently rotates forward and reversely at a small angle. At this time, the first bevel gear 16 drives the first rod 7 and the ring 13 to rotate forward and reverse intermittently through the second bevel gear 17 and the third bevel gear 18 respectively. At this time, the first rod 7 drives the inner mold 8 to rotate, and the ring 13 drives the two arc plates 3 to rotate through the two fixed plates 14. Subsequently, the two arc plates 3 drive the two outer molds 5 to rotate through the four first electric push rods 4, and the rotation directions of the first rod 7 and the ring 13 are opposite, so that the inner mold 8 and the two outer molds 5 rotate in opposite directions, thereby preventing the phosphogypsum pipe from sticking to the side wall of the inner mold 8 and the inner wall of the two outer molds 5 during forming, which may cause the phosphogypsum pipe to be damaged when it is subsequently taken out, affecting its use.

[0042] The outer side wall of the outer mold 5 is elastically connected to a pressing plate 20 (such as Figure 5 As shown), the side wall of the pressing plate 20 close to the outer mold 5 is fixedly connected with a plurality of collision rods 21 (as shown Figure 4 As shown), the lower ends of the two fixed plates 14 are rotatably connected to the second rod 22, and the side wall of the second rod 22 is fixedly connected to the convex column 23, which presses the pressure plate 20 during the rotation process (as shown in FIG. Figure 4 shown).

[0043] The inner side walls of the two arc plates 3 are rotatably connected to the third rod 24, and the side wall of the third rod 24 away from the arc plate 3 is fixedly connected to the fourth bevel gear 25. The lower end of the second rod 22 is fixedly connected to the fifth bevel gear 26, and the fourth bevel gear 25 and the fifth bevel gear 26 are meshed.

[0044] The annular groove 2 is fixedly connected to an arc-shaped tooth plate 27 near the bottom of the arc-shaped plate 3 (such as Figure 6 and Figure 8 The side wall of the third rod 24 is fixedly connected to a gear 28, and the arc-shaped toothed plate 27 is meshed with the gear 28 (as shown in FIG. Figure 4 shown).

[0045] During the rotation of the arc plate 3, the gear 28 is driven by the third rod 24 to rotate on the side wall of the arc tooth plate 27. At this time, the gear 28 rotates under the action of the arc tooth plate 27, and then the third rod 24 drives the second rod 22 to rotate through the fourth bevel gear 25 and the fifth bevel gear 26, and drives the boss 23 to rotate, and then the boss 23 can intermittently squeeze the pressure plate 20. At this time, under the action of the elastic force of multiple first springs 19 and the squeezing force of the boss 23, the pressure plate 20 intermittently moves toward and away from the outer mold 5, driving multiple collision rods 21 to intermittently collide and knock on the side wall of the outer mold 5, so that the molten liquid of the phosphogypsum pipe is evenly distributed, and the bubbles that may exist in the molten liquid of the phosphogypsum pipe can also be vibrated and discharged, thereby improving the molding quality of the phosphogypsum pipe.

[0046] The upper end of the L-shaped plate 6 is fixedly connected to a vacuum frame 29 (such as Figure 7 As shown), the inner wall of the air pumping frame 29 is sealed and slidably connected with a slide plate 30, the lower end of the slide plate 30 is elastically connected to the inner bottom of the air pumping frame 29 through a plurality of second springs 31, the inner bottom of the air pumping frame 29 is connected with the lower end of the sealing ring 11 through an air pumping pipe 33, and an air outlet pipe 32 is fixedly connected to the lower part of the inner wall of the air pumping frame 29, a one-way valve that only allows gas to enter the air pumping frame 29 from the enclosed space composed of two outer molds 5, the inner mold 8 and the sealing ring 11 is installed in the air pumping pipe 33, and a one-way valve that only allows gas to be discharged from the air pumping frame 29 is installed in the air outlet pipe 32.

[0047] The upper end of the slide plate 30 is fixedly connected to a fixing rod 34, the upper end of the fixing rod 34 is fixedly connected to a wedge plate 35, and the upper side wall of the first rod 7 is fixedly connected to a wedge plate 36, which is semicircular (such as Figure 2 As shown), the wedge-shaped disc 36 squeezes the wedge plate 35 during the rotation process (as shown in FIG. Figure 7 shown).

[0048] During the rotation of the first rod 7, the rotation of the wedge disk 36 will intermittently squeeze the wedge plate 35. At this time, the slide plate 30 will move up and down under the squeezing force of the wedge disk 36 on the wedge plate 35 and the elastic force of the multiple second springs 31. At this time, the exhaust frame 29 can extract the gas in the closed space composed of the two outer molds 5, the inner mold 8 and the sealing ring 11 through the exhaust pipe 33 and the outlet pipe 32, thereby further improving the molding quality of the phosphogypsum pipe.

[0049] When producing phosphogypsum pipes, firstly, the four first electric push rods 4 are adjusted to extend, driving the two outer molds 5 to approach each other, so that the two outer molds 5 and the inner mold 8 are closely fitted. At this time, the closed space composed of the two outer molds 5, the inner mold 8 and the sealing ring 11 is the area where the phosphogypsum pipe is cooled and formed, and then the molten liquid of the phosphogypsum pipe is transported into the closed space through the feeding pipe 12;

[0050] Then, the driving motor 15 intermittently rotates forward and reversely at a small angle. At this time, the first bevel gear 16 drives the first rod 7 and the collar 13 to rotate forward and reverse intermittently through the second bevel gear 17 and the third bevel gear 18, respectively. The first rod 7 drives the inner mold 8 to rotate, and the collar 13 drives the two arc plates 3 to rotate through the two fixed plates 14. Then, the two arc plates 3 drive the two outer molds 5 to rotate through the four first electric push rods 4, so that the inner mold 8 and the two outer molds 5 rotate synchronously, and the rotation directions of the first rod 7 and the collar 13 are opposite, so that the inner mold 8 and the two outer molds 5 rotate in opposite directions, so as to avoid the phosphogypsum pipe sticking to the side wall of the inner mold 8 and the inner side walls of the two outer molds 5 during molding, which may cause the phosphogypsum pipe to be damaged when it is subsequently taken out, affecting its use;

[0051] And during the rotation of the arc plate 3, the gear 28 is driven by the third rod 24 to rotate on the side wall of the arc tooth plate 27. At this time, the gear 28 rotates under the action of the arc tooth plate 27, and then the third rod 24 drives the second rod 22 to rotate through the fourth bevel gear 25 and the fifth bevel gear 26, and drives the protruding column 23 to rotate, and then the protruding column 23 can intermittently squeeze the pressing plate 20. At this time, under the action of the elastic force of the multiple first springs 19 and the squeezing force of the protruding column 23, the pressing plate 20 intermittently moves toward and away from the outer mold 5, driving the multiple collision rods 21 to intermittently collide and knock the side wall of the outer mold 5, so that the molten liquid of the phosphogypsum pipe is evenly distributed, and the bubbles that may exist in the molten liquid of the phosphogypsum pipe can also be vibrated and discharged, thereby improving the molding quality of the phosphogypsum pipe;

[0052] The first rod 7 rotates to drive the wedge-shaped disc 36 to rotate. At this time, the wedge-shaped disc 36 will intermittently squeeze the wedge-shaped plate 35. At this time, the slide plate 30 will move up and down under the squeezing force of the wedge-shaped disc 36 on the wedge-shaped plate 35 and the elastic force of the plurality of second springs 31. At this time, the air extraction frame 29 can extract the gas in the closed space composed of the two outer molds 5, the inner mold 8 and the sealing ring 11 through the air extraction pipe 33 and the air outlet pipe 32, thereby further improving the molding quality of the phosphogypsum pipe.

[0053] After the gypsum pipe is cooled and formed, the four first electric push rods 4 are adjusted to contract, driving the two outer molds 5 to separate from the inner mold 8 respectively (such as Figure 5 As shown), the two second electric push rods 10 are adjusted to move downward, and the sealing ring 11 is moved downward to squeeze the phosphogypsum pipe located on the side wall of the inner mold 8 downward, and then the phosphogypsum pipe flows out through the discharge port, so as to facilitate the removal of the formed phosphogypsum pipe. This avoids the need for workers to invert the mold after the phosphogypsum pipe is cooled and formed in the prior art, and then continuously knock on the mold to take out the formed phosphogypsum pipe. This method increases the work intensity while reducing the forming efficiency of the phosphogypsum pipe.

[0054] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A phosphogypsum pipe forming mold, characterized in that: include: Base (1); A molding mechanism, the molding mechanism comprising an annular groove (2) provided on a base (1), the inner wall of the annular groove (2) being slidably connected to two arc-shaped plates (3), the side walls of the two arc-shaped plates (3) being fixedly connected to two first electric push rods (4), the movable ends of the two first electric push rods (4) being commonly fixedly connected to an outer mold (5), the upper end of the base (1) being fixedly connected to an L-shaped plate (6), the lower end of the L-shaped plate (6) being rotatably connected to a first rod (7), the side wall of the first rod (7) being fixedly connected to an inner mold (8), the inner mold (8 ) is located between two outer molds (5), the first rod (7) is located on the side wall above the inner mold (8) and is fixedly connected to a fixed plate (9), the lower end of the fixed plate (9) is fixedly connected to two second electric push rods (10), the movable ends of the two second electric push rods (10) are commonly fixedly connected to a sealing ring (11), the lower end of the sealing ring (11) is penetrated and fixedly connected to a feed pipe (12), the inner wall of the sealing ring (11) is tightly fitted with the side wall of the inner mold (8), and the outer wall of the sealing ring (11) is tightly fitted with the inner walls of the two outer molds (5).

2. A phosphogypsum pipe forming mold according to claim 1, characterized in that: The invention also comprises a rotating mechanism, wherein the rotating mechanism comprises a collar (13) rotatably connected to the upper end of the L-shaped plate (6), the side wall of the first rod (7) is located in the collar (13), the side wall of the collar (13) is respectively fixedly connected to the inner side walls of the two arc-shaped plates (3) through two fixing plates (14), the upper end of the L-shaped plate (6) is fixedly connected to a motor (15) through a supporting plate, and the motor (15) is provided with a driving mechanism for driving the first rod (7) and the collar (13) to rotate.

3. A phosphogypsum pipe forming mold according to claim 2, characterized in that: The driving mechanism comprises a first bevel gear (16) fixedly connected to the side wall of the movable shaft of the motor (15); the side wall of the first rod (7) is fixedly connected to the second bevel gear (17); the side wall of the collar (13) is fixedly connected to the third bevel gear (18); the first bevel gear (16) is located between the second bevel gear (17) and the third bevel gear (18); the side wall of the first bevel gear (16) is meshed with the side wall of the second bevel gear (17); and the side wall of the first bevel gear (16) is meshed with the side wall of the third bevel gear (18).

4. A phosphogypsum pipe forming mold according to claim 2, characterized in that: The outer side wall of the outer mold (5) is elastically connected to a pressure plate (20) via a plurality of first springs (19); the side wall of the pressure plate (20) close to the outer mold (5) is fixedly connected to a plurality of collision rods (21); the lower ends of the two fixed plates (14) are rotatably connected to a second rod (22); the side wall of the second rod (22) is fixedly connected to a convex column (23); the convex column (23) presses the pressure plate (20) during rotation.

5. A phosphogypsum pipe forming mold according to claim 4, characterized in that: The inner side walls of the two arc-shaped plates (3) are both rotatably connected to a third rod (24); the side wall of the third rod (24) away from the arc-shaped plate (3) is fixedly connected to a fourth bevel gear (25); the lower end of the second rod (22) is fixedly connected to a fifth bevel gear (26); the fourth bevel gear (25) and the fifth bevel gear (26) are meshed with each other.

6. The phosphogypsum pipe forming mold according to claim 5, characterized in that: The bottom of the annular groove (2) close to the arc plate (3) is fixedly connected with an arc-shaped toothed plate (27), and the side wall of the third rod (24) is fixedly connected with a gear (28), and the arc-shaped toothed plate (27) is meshed with the gear (28).

7. The phosphogypsum pipe forming mold according to claim 1, characterized in that: The upper end of the L-shaped plate (6) is fixedly connected to an air extraction frame (29), the inner wall of the air extraction frame (29) is sealingly and slidably connected to a slide plate (30), the lower end of the slide plate (30) is elastically connected to the inner bottom of the air extraction frame (29) via a plurality of second springs (31), the inner bottom of the air extraction frame (29) is connected to the lower end of the sealing ring (11) via an air extraction pipe (33), and an air outlet pipe (32) is fixedly connected below the inner wall of the air extraction frame (29).

8. The phosphogypsum pipe forming mold according to claim 7, characterized in that: The upper end of the slide plate (30) is fixedly connected to a fixing rod (34), the upper end of the fixing rod (34) is fixedly connected to a wedge plate (35), and the upper side wall of the first rod (7) is fixedly connected to a wedge disk (36), the wedge disk (36) is semicircular, and the wedge disk (36) presses the wedge plate (35) during rotation.

9. The phosphogypsum pipe forming mold according to claim 7, characterized in that: A one-way valve is installed in the exhaust pipe (33) so as to allow gas to enter the exhaust frame (29) from the closed space formed by the two outer molds (5), the inner mold (8) and the sealing ring (11), and a one-way valve is installed in the exhaust pipe (32) so as to allow gas to be discharged from the exhaust frame (29).

10. The phosphogypsum pipe forming mold according to claim 1, characterized in that: A discharge port is formed through the lower end of the base (1), and the lower surfaces of the inner mold (8) and the two outer molds (5) are located inside the discharge port.

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