A device and method for pouring concrete water pipes in water supply and drainage

Abstract

The present invention discloses a device and method for pouring concrete water pipes in pipes for water supply and drainage, belonging to the field of concrete water pipe pouring. It includes a support frame, and also includes: a first support column fixedly connected to the inner wall of the support frame, the upper end of the first support column is fixedly connected to a bottom plate; an outer mold arranged on the outer wall of the bottom plate, the outer wall of the outer mold is fixedly connected to the first support plate, wherein the side wall of the first support plate is fixedly connected to the second support plate, the side wall of the second support plate is installed with a first cylinder, and the output end of the first cylinder is fixedly connected to a scraper; an inner mold arranged on the surface of the bottom plate, a molding cavity is arranged between the inner mold and the outer mold, after pouring is completed, the first cylinder is started to push the scraper to scrape off the concrete on the upper ends of the outer mold and the inner mold, so as to reduce the phenomenon of adhesion between the concrete water pipe and the inner mold and the outer mold, and reduce the phenomenon of edge collapse of the concrete water pipe during demoulding, thereby improving the molding and demoulding effects of the concrete water pipe.

Description

Technical Field

[0001] The invention relates to the technical field of concrete water pipe casting, and in particular to a device and method for in-pipe casting of concrete water pipes for water supply and drainage. Background Art

[0002] The water supply and drainage engineering studies the social circulation of water. "Water supply": a modern water plant draws natural water from rivers, lakes and reservoirs every day, and uses a series of physical and chemical methods to purify the water into tap water that meets the standards for production and domestic water use. The tap water is then transported to thousands of households through the extensive urban water network. "Drainage": an advanced sewage treatment plant centrally treats the sewage and wastewater used in our production and life, and then discharges it into rivers, lakes and reservoirs cleanly. The process of water intake, treatment, transportation, reprocessing and then discharge is the main content of the water supply and drainage engineering research. In water supply and drainage engineering, concrete water pipe casting equipment is often required to prepare concrete water pipes.

[0003] The concrete water pipe casting equipment in the prior art generally limits the range of the outer wall of the concrete water pipe by a mold tube, and then pours concrete into the mold tube, so that the concrete in the mold tube accumulates from bottom to top into the shape of a concrete water pipe. During the forming process of the concrete water pipe, there will be some spread concrete on the top of the concrete water pipe and the inner wall of the mold tube, making the concrete water pipe wavy and sticking to the mold tube. When the concrete water pipe needs to be demolded after air-drying and forming, the place where the edge of the concrete water pipe is adhered to the mold tube is not easy to detach, causing the edge of the concrete water pipe to collapse, affecting the forming and demolding effects of the concrete water pipe. Therefore, it is necessary to improve it. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the edge of the concrete water pipe and the mold pipe are not easy to be separated during demoulding, and to propose a concrete water pipe in-pipe casting device and method for water supply and drainage.

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

[0006] A device for pouring concrete water pipes in pipes for water supply and drainage, comprising a support frame, and also comprising: a first support column fixedly connected to the inner wall of the support frame, the upper end of the first support column fixedly connected to a base plate; an outer mold arranged on the outer wall of the base plate, the inner diameter of the outer mold being consistent with the outer diameter of the base plate, the outer wall of the outer mold fixedly connected to the first support plate, wherein the side wall of the first support plate is fixedly connected to the second support plate, the side wall of the second support plate is installed with a first cylinder, the output end of the first cylinder is fixedly connected to a scraper, the bottom of the scraper is flush with the upper end of the outer mold; an inner mold arranged on the surface of the base plate, a molding cavity is arranged between the inner mold and the outer mold.

[0007] In order to facilitate the pressing of concrete during the pouring process, preferably, a fourth cylinder is installed on the surface of the support frame, the output end of the fourth cylinder is connected to the sixth support plate through a connecting assembly, and the bottom of the sixth support plate is fixedly connected to a pressing ring through a fifth support column, wherein the inner diameter of the pressing ring is larger than the outer diameter of the inner mold, and the outer diameter of the pressing ring is smaller than the inner diameter of the outer mold.

[0008] In order to facilitate the connection between the output end of the fourth cylinder and the sixth support plate, the connection component further includes: a concave plate fixedly connected to the output end of the fourth cylinder, the inner wall of the concave plate is fixedly connected with a first slide bar; a vertical plate fixedly connected to the surface of the sixth support plate, the first slide bar passes through the vertical plate, the vertical plate is slidably connected to the first slide bar, and a first spring is symmetrically fixedly connected between the vertical plate and the concave plate; a second slide bar fixedly connected to the surface of the vertical plate, the inner wall of the support frame is provided with a slide groove, one end of the second slide bar is slidably connected in the slide groove, the slide groove includes a first straight portion and a second straight portion, and a wavy portion is connected between the first straight portion and the second straight portion.

[0009] Preferably, the side wall of the support frame is fixedly connected with a guide rod, a reciprocating plate is slidably connected to the guide rod, an inclined bar is fixedly connected to the side wall of the reciprocating plate, and the end of the second sliding bar away from the concave plate cooperates with the inclined bar; the side wall of the support frame is slidably connected with a knocking rod, one end of the knocking rod is fixedly connected to the reciprocating plate, and the other end of the knocking rod can contact the outer mold; a second spring is connected between the reciprocating plate and the side wall of the support frame.

[0010] In order to facilitate the separation of the inner mold and the concrete water pipe during demolding, preferably, a second cylinder is installed on the inner wall of the support frame, the output end of the second cylinder is fixedly connected to the third support plate, the surface of the third support plate is provided with a second support column, the upper end of the second support column is fixedly connected to the inner mold, and the inner mold passes through the bottom plate.

[0011] In order to facilitate the smoothing of the inner wall of the concrete water pipe, further, the second support column is rotatably connected to the third support plate, and the outer wall of the second support column is coaxially fixedly connected with a second gear, wherein a first motor is installed on the surface of the third support plate, and the output end of the first motor is fixedly connected with a first rotating shaft, and the output end of the first rotating shaft is fixedly connected with a first gear, and the first gear and the second gear are meshed with each other.

[0012] In order to facilitate the normal movement of the third support plate, further, the third support plate is disc-shaped, the outer diameter of the third support plate is consistent with the outer diameter of the inner mold, and the bottom plate is slidably connected to the inner mold.

[0013] In order to facilitate the separation of the outer mold and the concrete water pipe during demolding, preferably, a third cylinder is installed on the inner wall of the support frame, the output end of the third cylinder is fixedly connected to a fourth support plate, the bottom of the fourth support plate is fixedly connected to a fifth support plate through a fourth support column, and the outer mold passes through the fifth support plate.

[0014] In order to facilitate the smoothing of the outer wall of the concrete water pipe, further, a second motor is installed on the surface of the fifth support plate, the output end of the second motor is fixedly connected to the second rotating shaft, the output end of the second rotating shaft is fixedly connected to the third gear, wherein the outer wall of the outer mold is coaxially fixedly connected to a fourth gear, the fourth gear and the third gear are meshed with each other, and the outer mold is rotatably connected to the fifth support plate.

[0015] A method for pouring concrete water pipes for water supply and drainage, the operation steps are as follows:

[0016] Step 1: first pour half of the volume of concrete into the molding cavity, start the fourth cylinder to drive the pressing ring to press the concrete in the molding cavity, and then pour and press the other half of the volume of concrete; Step 2: during the pressing process, make one end of the second slide slide in the slide groove, so that the pressing ring vibrates while pressing, thereby making the concrete in the molding cavity accumulate more compactly; Step 3: after the pouring is completed, control the first motor and the second motor to rotate the inner mold and the outer mold, and make the inner mold and the outer mold rotate in opposite directions, so as to smooth the concrete water pipe; Step 4: simultaneously control the second cylinder and the third cylinder to make the outer mold and the inner mold descend at the same time to complete the demoulding.

[0017] Compared with the prior art, the present invention provides a concrete water pipe in-pipe pouring device for water supply and drainage, which has the following beneficial effects:

[0018] (1) The device for pouring concrete pipes in water supply and drainage pours concrete into a forming cavity during use, so that the concrete in the forming cavity accumulates from bottom to top into a concrete pipe shape. During the forming process of the concrete pipe, some spread concrete will be on the top of the concrete pipe and on the inner walls of the inner and outer molds. At this time, the first cylinder is started to push the scraper to scrape off the concrete on the upper ends of the outer and inner molds, thereby reducing the phenomenon of adhesion between the concrete pipe and the inner and outer molds, and reducing the phenomenon of edge collapse of the concrete pipe during demolding, thereby improving the forming and demolding effects of the concrete pipe.

[0019] (2) The device for pouring concrete water pipes in pipes for water supply and drainage starts the first motor to drive the first rotating shaft to rotate. By designing the first gear and the second gear, the second support column is rotated, thereby rotating the inner mold, thereby smoothing the inner wall of the concrete water pipe. The second motor is started to drive the second rotating shaft to rotate. By designing the third gear and the fourth gear, the outer mold is rotated, thereby smoothing the outer wall of the concrete water pipe. The first motor and the second motor are controlled to make the inner mold and the outer mold rotate in opposite directions, which can reduce the gaps and bubbles retained inside the concrete water pipe and improve the quality of the concrete water pipe. At the same time, it is convenient for subsequent demoulding. While ensuring the pouring quality, it solves the pain point that some pouring molds are difficult to demould, thereby improving the practicality of the device for pouring concrete water pipes in pipes and facilitating use.

[0020] (3) The in-pipe pouring device for concrete water pipes for water supply and drainage, starts the fourth cylinder to drive the connecting assembly to descend, the movement of the connecting assembly drives the sixth support plate to move downward, under the support of the fifth support column, the movement of the sixth support plate drives the pressing ring to descend in the forming cavity, thereby squeezing the concrete in the forming cavity more compactly, starts the fourth cylinder to drive the concave plate to descend, the movement of the concave plate causes the second slide bar to slide in the slide groove, when the second slide bar slides in the wavy portion, the first slide bar and the vertical plate slide relative to each other, under the action of the first spring, the pressing ring vibrates while descending, further filling the concrete in the forming cavity more compactly, thereby improving the strength of the concrete water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram from a first perspective of a device for pouring concrete water pipes in water supply and drainage proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the inner mold structure in a device for pouring concrete water pipes for water supply and drainage proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the outer mold structure in a device for pouring concrete water pipes for water supply and drainage proposed by the present invention;

[0024] Figure 4 This is a schematic structural diagram from a second perspective of a device for pouring concrete water pipes in water supply and drainage according to the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the connection components in a concrete water pipe in-pipe pouring device for water supply and drainage proposed by the present invention;

[0026] Figure 6 The invention provides a concrete water pipe in-pipe pouring device for water supply and drainage. Figure 1A schematic diagram of the structure enlargement at point A;

[0027] Figure 7 This is a schematic structural diagram of a reciprocating plate of a concrete water pipe in-pipe pouring device for water supply and drainage proposed by the present invention.

[0028] In the figure: 1, support frame; 2, outer mold; 3, inner mold; 4, first support plate; 5, second support plate; 6, first cylinder; 7, scraper; 8, first support column; 9, bottom plate; 10, molding cavity; 11, second cylinder; 12, third support plate; 13, second support column; 14, first motor; 15, first rotating shaft; 16, first gear; 17, second gear; 18, third cylinder; 19, fourth support plate; 20, fourth support column; 21, fifth support plate; 22, second motor machine; 23, second rotating shaft; 24, third gear; 25, fourth gear; 26, fourth cylinder; 27, sixth support plate; 28, fifth support column; 29, pressing ring; 30, concave plate; 31, first slide bar; 32, first spring; 33, second slide bar; 34, slide groove; 341, first straight portion; 342, wavy portion; 343, second straight portion; 35, vertical plate; 36, reciprocating plate; 37, inclined bar; 39, guide rod; 40, second spring; 41, knock rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Embodiment 1:

[0032] Reference Figure 1-7A device for pouring concrete water pipes in water supply and drainage comprises a support frame 1, and also comprises: a first support column 8 fixedly connected to the inner wall of the support frame 1, the upper end of the first support column 8 is fixedly connected to a bottom plate 9; an outer mold 2 arranged on the outer wall of the bottom plate 9, the inner diameter of the outer mold 2 is consistent with the outer diameter of the bottom plate 9, the outer wall of the outer mold 2 is fixedly connected to a first support plate 4, wherein the side wall of the first support plate 4 is fixedly connected to a second support plate 5, the side wall of the second support plate 5 is installed with a first cylinder 6, the output end of the first cylinder 6 is fixedly connected to a scraper 7, the bottom of the scraper 7 is flush with the upper end of the outer mold 2; an inner mold 3 arranged on the surface of the bottom plate 9, a molding cavity 10 is arranged between the inner mold 3 and the outer mold 2.

[0033] When in use, concrete is poured into the molding cavity 10 so that the concrete in the molding cavity 10 accumulates from bottom to top into a concrete water pipe shape. During the molding process of the concrete water pipe, there will be some spread concrete on the top of the concrete water pipe and the inner walls of the inner mold 3 and the outer mold 2. At this time, the first cylinder 6 is started to push the scraper 7 to scrape off the concrete on the upper ends of the outer mold 2 and the inner mold 3, thereby reducing the adhesion between the concrete water pipe and the inner mold 3 and the outer mold 2, and reducing the edge collapse of the concrete water pipe during the demoulding process, thereby improving the molding and demoulding effects of the concrete water pipe.

[0034] Embodiment 2:

[0035] Reference Figure 4-5 , which is basically the same as Example 1, and further, is a specific implementation plan for pressing concrete during the pouring process.

[0036] A fourth cylinder 26 is installed on the surface of the support frame 1, and the output end of the fourth cylinder 26 is connected to the sixth support plate 27 through a connecting component, and the bottom of the sixth support plate 27 is fixedly connected to a pressing ring 29 through a fifth support column 28, wherein the inner diameter of the pressing ring 29 is larger than the outer diameter of the inner mold 3, and the outer diameter of the pressing ring 29 is smaller than the inner diameter of the outer mold 2.

[0037] The specific pressing process is: start the fourth cylinder 26 to drive the connecting assembly to descend, the movement of the connecting assembly drives the sixth support plate 27 to move downward, and under the support of the fifth support column 28, the movement of the sixth support plate 27 drives the pressing ring 29 to descend in the molding cavity 10, thereby squeezing the concrete in the molding cavity 10 more compactly.

[0038] Embodiment 3:

[0039] Reference Figure 4-7 , which is basically the same as Example 2, and further, a specific implementation scheme for causing the pressing ring 29 to vibrate during the pressing process is specifically added.

[0040] The connection component includes: a concave plate 30 fixedly connected to the output end of the fourth cylinder 26, and a first slide bar 31 is fixedly connected to the inner wall of the concave plate 30; a vertical plate 35 fixedly connected to the surface of the sixth support plate 27, the first slide bar 31 passes through the vertical plate 35, the vertical plate 35 is slidably connected to the first slide bar 31, and a first spring 32 is symmetrically fixedly connected between the vertical plate 35 and the concave plate 30; a second slide bar 33 fixedly connected to the surface of the vertical plate 35, and a slide groove 34 is opened on the inner wall of the support frame 1, and one end of the second slide bar 33 is slidably connected in the slide groove 34.

[0041] The slide groove 34 includes a first straight portion 341 and a second straight portion 343 , and a wavy portion 342 is connected between the first straight portion 341 and the second straight portion 343 .

[0042] A guide rod 39 is fixedly connected to the side wall of the support frame 1, and a reciprocating plate 36 is slidably connected to the guide rod 39. An inclined bar 37 is fixedly connected to the side wall of the reciprocating plate 36. The end of the second slide bar 33 away from the concave plate 30 cooperates with the inclined bar 37. The number of the inclined bars 37 is 3-7. During the downward movement of the second slide bar 33, it can contact the inclined bar 37. The width of the inclined bar 37 is greater than the swing amplitude of the second slide bar 33 in the wavy portion 342.

[0043] The side wall of the support frame 1 is slidably connected with a knocking rod 41, one end of the knocking rod 41 is fixedly connected to the reciprocating plate 36, and the other end of the knocking rod 41 can contact the outer mold 2. Figure 4 , the number of the knocking rods 41 is 2.

[0044] A second spring 40 is connected between the reciprocating plate 36 and the side wall of the support frame 1 .

[0045] The process of the pressing ring 29 shaking is as follows: starting the fourth cylinder 26 to drive the concave plate 30 to descend, and the movement of the concave plate 30 causes the second slide bar 33 to slide in the slide groove 34. When the second slide bar 33 slides in the wavy portion 342, under the action of the wavy portion 342, the first slide bar 31 and the vertical plate 35 slide relative to each other, thereby driving the sixth support plate 27 to shake, so that when the pressing ring 29 descends, the concrete in the molding cavity 10 is filled more compactly, thereby improving the strength of the concrete water pipe. At the same time, the pressing ring 29 shakes again while descending, and the shaking pressing ring 29 collides and knocks the inner wall of the outer mold 2, causing it to vibrate, which facilitates demoulding.

[0046] In the process of the second slide bar 33 moving downward, it contacts the inclined bar 37 synchronously, pushes the reciprocating plate 36 to move through the inclined bar 37, stretches the second spring 40, and then when it loses contact with the inclined bar 37, the reciprocating plate 36 quickly moves in the opposite direction, driving the knocking rod 41 to knock the side wall of the outer mold 2, and then when the second slide bar 33 continues to move downward, the knocking rod 41 continues to knock the side wall of the outer mold 2, causing it to vibrate, which is convenient for subsequent demoulding. When the fourth cylinder 26 is started, it not only achieves the purpose of squeezing concrete through the pressing ring 29, but also cooperates with the wavy portion 342 to make the pressing ring 29 swing, collide and knock the inner wall of the outer mold 2, causing it to vibrate, which is convenient for demoulding. On this basis, the second slide bar 33 cooperates with the reciprocating plate 36 to make the knocking rod 41 continue to knock the side wall of the outer mold 2, and the demoulding quality is once again maintained.

[0047] Embodiment 4:

[0048] Reference Figure 2-3 , which is basically the same as Example 3, and further, a specific implementation plan for demoulding the concrete water pipe is added.

[0049] A second cylinder 11 is installed on the inner wall of the support frame 1, and a third support plate 12 is fixedly connected to the output end of the second cylinder 11. The third support plate 12 is disc-shaped, and the outer diameter of the third support plate 12 is consistent with the outer diameter of the inner mold 3. A second support column 13 is arranged on the surface of the third support plate 12, and the upper end of the second support column 13 is fixedly connected to the inner mold 3. The inner mold 3 passes through the bottom plate 9, and the bottom plate 9 is slidably connected to the inner mold 3.

[0050] A third cylinder 18 is installed on the inner wall of the support frame 1 , and a fourth support plate 19 is fixedly connected to the output end of the third cylinder 18 . A fifth support plate 21 is fixedly connected to the bottom of the fourth support plate 19 via a fourth support column 20 , and the outer mold 2 passes through the fifth support plate 21 .

[0051] The specific demoulding process is: the second cylinder 11 and the third cylinder 18 are controlled at the same time, the second cylinder 11 controls the third support plate 12 to move downward, the movement of the third support plate 12 drives the second support column 13 to move downward, the movement of the second support column 13 drives the inner mold 3 to descend, the third cylinder 18 controls the fourth support plate 19 to move downward, the movement of the fourth support plate 19 drives the fourth support column 20 to move, the movement of the fourth support column 20 drives the fifth support plate 21 to move downward, so that the outer mold 2 descends, and the movement of the inner mold 3 and the outer mold 2 facilitates demoulding.

[0052] Embodiment 5:

[0053] Reference Figure 2-4 , which is basically the same as Example 4, and further, a specific implementation plan for smoothing the concrete water pipe is specifically added.

[0054] The second support column 13 is rotatably connected to the third support plate 12, and the outer wall of the second support column 13 is coaxially fixedly connected with the second gear 17, wherein a first motor 14 is installed on the surface of the third support plate 12, and the output end of the first motor 14 is fixedly connected with the first rotating shaft 15, and the output end of the first rotating shaft 15 is fixedly connected with the first gear 16, and the first gear 16 and the second gear 17 are meshed with each other.

[0055] A second motor 22 is installed on the surface of the fifth support plate 21, and the output end of the second motor 22 is fixedly connected to the second rotating shaft 23, and the output end of the second rotating shaft 23 is fixedly connected to the third gear 24, wherein the outer wall of the outer mold 2 is coaxially fixedly connected to the fourth gear 25, the fourth gear 25 and the third gear 24 are meshed with each other, and the outer mold 2 is rotatably connected to the fifth support plate 21.

[0056] The specific smoothing process is: start the first motor 14 to drive the first rotating shaft 15 to rotate, the rotation of the first rotating shaft 15 drives the first gear 16 to rotate, the rotation of the first gear 16 drives the second gear 17 to rotate, the rotation of the second gear 17 drives the second support column 13 to rotate, the rotation of the second support column 13 drives the inner mold 3 to rotate, so as to achieve smoothing of the inner wall of the concrete water pipe;

[0057] The second motor 22 is started to drive the second rotating shaft 23 to rotate. The rotation of the second rotating shaft 23 drives the third gear 24 to rotate. The rotation of the third gear 24 drives the fourth gear 25 to rotate. The rotation of the fourth gear 25 drives the outer mold 2 to rotate, thereby achieving smoothing of the outer wall of the concrete water pipe.

[0058] Controlling the first motor 14 and the second motor 22 to make the inner mold 3 and the outer mold 2 rotate in opposite directions can reduce the gaps and bubbles retained inside them, improve the quality of the concrete water pipe, and facilitate subsequent demoulding processing. While ensuring the casting quality, it solves the pain point that some casting molds are difficult to demould, thereby improving the practicality of the concrete water pipe in-pipe casting device and facilitating use.

[0059] A method for pouring concrete water pipes for water supply and drainage, the operation steps are as follows:

[0060] Step 1: first pour half of the volume of concrete into the molding cavity 10, start the fourth cylinder 26 to drive the pressing ring 29 to press the concrete in the molding cavity 10, and then pour and press the other half of the volume of concrete;

[0061] Step 2: During the pressing process, one end of the second slide bar 33 slides in the slide groove 34, so that the pressing ring 29 vibrates while pressing, thereby making the concrete in the molding cavity 10 more compact;

[0062] Step 3: After pouring is completed, the first motor 14 and the second motor 22 are controlled to rotate the inner mold 3 and the outer mold 2, and the rotation directions of the inner mold 3 and the outer mold 2 are opposite, so as to smooth the concrete water pipe;

[0063] Step 4: Control the second cylinder 11 and the third cylinder 18 simultaneously to make the outer mold 2 and the inner mold 3 descend simultaneously to complete demoulding.

[0064] The above description is only a preferred specific implementation manner 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, and they should be covered by the protection scope of the present invention.

Claims

1. A concrete water pipe in-pipe pouring device for water supply and drainage, characterized in that: It comprises a support frame (1), a first support column (8) fixedly connected to the inner wall of the support frame (1), the upper end of the first support column (8) being fixedly connected to a bottom plate (9); an outer mold (2) arranged on the outer wall of the bottom plate (9), the inner diameter of the outer mold (2) being consistent with the outer diameter of the bottom plate (9), the outer wall of the outer mold (2) being fixedly connected to a first support plate (4), the side wall of the first support plate (4) being fixedly connected to a second support plate (5), the side wall of the second support plate (5) being mounted with a first cylinder (6), the output end of the first cylinder (6) being fixedly connected to a scraper (7), the bottom of the scraper (7) being flush with the upper end of the outer mold (2); an inner mold (3) arranged on the surface of the bottom plate (9), a molding cavity (10) being arranged between the inner mold (3) and the outer mold (2); A fourth cylinder (26) is mounted on the surface of the support frame (1); an output end of the fourth cylinder (26) is connected to a sixth support plate (27) via a connection assembly; a pressing ring (29) is fixedly connected to the bottom of the sixth support plate (27) via a fifth support column (28); an inner diameter of the pressing ring (29) is larger than an outer diameter of the inner mold (3), and an outer diameter of the pressing ring (29) is smaller than an inner diameter of the outer mold (2); The connection assembly comprises: a concave plate (30) fixedly connected to the output end of the fourth cylinder (26), the inner wall of the concave plate (30) being fixedly connected to a first slide bar (31); a vertical plate (35) fixedly connected to the surface of the sixth support plate (27), the first slide bar (31) penetrating the vertical plate (35), the vertical plate (35) being slidably connected to the first slide bar (31), a first spring (32) being symmetrically fixedly connected between the vertical plate (35) and the concave plate (30); a second slide bar (33) fixedly connected to the surface of the vertical plate (35), the inner wall of the support frame (1) being provided with a slide groove (34), one end of the second slide bar (33) being slidably connected in the slide groove (34); the slide groove (34) comprising a first straight portion (341) and a second straight portion (342). A straight portion (343), a wavy portion (342) is connected between the first straight portion (341) and the second straight portion (343); a guide rod (39) is fixedly connected to the side wall of the support frame (1), a reciprocating plate (36) is slidably connected to the guide rod (39), an inclined bar (37) is fixedly connected to the side wall of the reciprocating plate (36), and one end of the second sliding bar (33) away from the concave plate (30) cooperates with the inclined bar (37); a knocking rod (41) is slidably connected to the side wall of the support frame (1), one end of the knocking rod (41) is fixedly connected to the reciprocating plate (36), and the other end of the knocking rod (41) can contact the outer mold (2); a second spring (40) is connected between the reciprocating plate (36) and the side wall of the support frame (1).

2. A concrete water pipe in-pipe pouring device for water supply and drainage according to claim 1, characterized in that: A second cylinder (11) is mounted on the inner wall of the support frame (1); an output end of the second cylinder (11) is fixedly connected to a third support plate (12); a second support column (13) is disposed on the surface of the third support plate (12); an upper end of the second support column (13) is fixedly connected to an inner mold (3); and the inner mold (3) passes through the bottom plate (9).

3. A concrete water pipe in-pipe pouring device for water supply and drainage according to claim 2, characterized in that: The second support column (13) is rotatably connected to the third support plate (12), and a second gear (17) is coaxially fixedly connected to the outer wall of the second support column (13). A first motor (14) is mounted on the surface of the third support plate (12); an output end of the first motor (14) is fixedly connected to a first rotating shaft (15); an output end of the first rotating shaft (15) is fixedly connected to a first gear (16); the first gear (16) and a second gear (17) are meshed with each other.

4. A device for pouring concrete water pipes for water supply and drainage according to claim 3, characterized in that: The third support plate (12) is disc-shaped, the outer diameter of the third support plate (12) is consistent with the outer diameter of the inner mold (3), and the bottom plate (9) is slidably connected to the inner mold (3).

5. A device for pouring concrete water pipes for water supply and drainage according to claim 4, characterized in that: A third cylinder (18) is installed on the inner wall of the support frame (1); an output end of the third cylinder (18) is fixedly connected to a fourth support plate (19); a bottom of the fourth support plate (19) is fixedly connected to a fifth support plate (21) via a fourth support column (20); and the outer mold (2) passes through the fifth support plate (21).

6. A device for pouring concrete water pipes for water supply and drainage according to claim 5, characterized in that: A second motor (22) is mounted on the surface of the fifth support plate (21); an output end of the second motor (22) is fixedly connected to a second rotating shaft (23); an output end of the second rotating shaft (23) is fixedly connected to a third gear (24); A fourth gear (25) is coaxially fixedly connected to the outer wall of the outer mold (2); the fourth gear (25) and the third gear (24) are meshed with each other; and the outer mold (2) is rotatably connected to the fifth support plate (21).

7. A method for pouring concrete pipes for water supply and drainage, using the device for pouring concrete pipes for water supply and drainage as claimed in claim 6, characterized in that: The steps are as follows: Step 1: first pour half of the volume of concrete into the molding cavity (10), start the fourth cylinder (26) to drive the pressing ring (29) to press the concrete in the molding cavity (10), and then pour and press the other half of the volume of concrete; Step 2: During the pressing process, one end of the second slide bar (33) slides in the slide groove (34), so that the pressing ring (29) vibrates while pressing, thereby making the concrete in the molding cavity (10) accumulate more compactly; Step 3: After pouring is completed, the first motor (14) and the second motor (22) are controlled to rotate the inner mold (3) and the outer mold (2), and the rotation directions of the inner mold (3) and the outer mold (2) are opposite, so that the concrete water pipe is smoothed; Step 4: Control the second air cylinder (11) and the third air cylinder (18) simultaneously to make the outer mold (2) and the inner mold (3) descend simultaneously, thus completing demoulding.

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