A method for manufacturing a movable cover of a biogas tank and application thereof

Abstract

The application discloses a manufacturing method of a movable cover of a biogas tank and application of the movable cover, and the manufacturing method comprises the following steps: a base model is made by using a basin-shaped outer mold and a cylindrical inner mold, a circular table is built outside the base model, and the movable cover is made by using a wood board, a straight board, iron wires, concrete, a gas guide pipe and a straight rod in cooperation with the circular table at the circular table and an opening of the biogas tank; and the application steps comprise the following steps: the movable cover is placed at the opening of the biogas tank, a pressing rod is inserted into two pressing rod rings, a wedge-shaped block is arranged at the bottom end of the pressing rod and the upper end of the movable cover, and the pressing rod and the movable cover are not movable; according to the manufacturing method, rural residents can make the movable cover which can seal and cover the opening of the biogas tank according to the opening aperture of the biogas tank, and the movable cover on the market is prevented from being not matched with the opening of the biogas tank, and the movable cover is correctly applied through the application method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biogas digester, in particular to a manufacturing method of a movable cover of a biogas digester and application thereof. BACKGROUND

[0002] The movable cover of the biogas digester needs to cover the biogas digester, and the aperture of the opening of the biogas digester of each household is inconsistent, and the movable cover with poor sealing is easy to cause biogas leakage, so many rural residents make the movable cover by themselves, therefore, the present application provides a manufacturing method of a movable cover of a biogas digester and application thereof. SUMMARY

[0003] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the application in order to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0004] In view of the problems existing in the manufacturing of the movable cover of the biogas digester in the rural area, the present application is proposed.

[0005] Therefore, the problem to be solved by the present application is how to solve the problem of enabling the rural residents to make the movable cover capable of sealing the opening aperture of the biogas digester by themselves.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a manufacturing method of a movable cover of a biogas digester, comprising the following steps:

[0007] S1: providing a basin-shaped outer mold, the inner wall of the basin-shaped outer mold is paved with a film, a cylindrical inner mold is placed in the middle of the inner cavity of the basin-shaped outer mold, the outer wall of the cylindrical inner mold is wrapped with a film, concrete is put into the gap between the basin-shaped outer mold and the cylindrical inner mold, the cylindrical inner mold is taken out after the concrete is dried, and a base model is obtained, the base model has a cylindrical inner cavity;

[0008] S2: covering the base model on the opening of the biogas digester, pasting a film on the outer wall of the base model, then smearing multiple layers of concrete outside the film, and laying bricks around the outside of the multiple layers of concrete to form a circular table, the base model is taken out after the concrete is air-dried, and two pressure rod rings are cast on the inner wall of the circular table;

[0009] S3: placing a wooden board in the opening of the biogas digester, the wooden board is connected with a wire in the middle, a plurality of straight boards are placed on the wooden board at an angle with the horizontal plane being perpendicular to the wooden board, the wire is pulled tight, the plurality of straight boards and the wooden board seal the opening of the biogas digester, the other end of the wire is tied to the middle of the straight rod, the straight rod is placed on the top end of the circular table, the wire is in a tight state, and a gas guide pipe is connected with the wire;

[0010] S4: In the upper end of the several straight plates and wood plates, the opening of the methane tank, and the inner wall of the circular table, lay a film, slide the air guide pipe to be located on the upper end face of the wood plate, pour a layer of concrete at the opening of the methane tank, place a steel support on the bottom layer of concrete, then continue to pour concrete, and the concrete should not overflow the air guide pipe, then insert two handle rings into the concrete that has not been dried;

[0011] S5: After the concrete in S4 is dried, the movable cover is formed, the iron wire is cut, the movable cover is taken out through the handle ring, then the wood plate and the several straight plates are taken out by loosening the iron wire.

[0012] As a preferred scheme of the method for manufacturing the movable cover of the methane tank, in the method, the cylindrical inner mold is made of mud or is made of bricks.

[0013] As a preferred scheme of the method for manufacturing the movable cover of the methane tank, in the method, the concrete in S1, S2, and S4 has a strength grade of C30 or C40.

[0014] The application of the movable cover of the methane tank manufactured by the method includes:

[0015] The movable cover is placed in the opening of the methane tank, the pressure rod is inserted into the two pressure rod rings, and the wedge-shaped block is placed at the bottom end of the pressure rod and the upper end of the movable cover, so that the pressure rod and the movable cover are not movable.

[0016] The method provided by the application can be used by rural residents to manufacture a movable cover that can seal and cover the opening of a methane tank according to the opening aperture of the methane tank, thereby avoiding the situation that the movable cover on the market does not match the opening of the methane tank. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0018] Figure 1 The structure diagram of the basin-shaped outer mold and the cylindrical inner mold in the application.

[0019] Figure 2 The structure diagram of the basin-shaped outer mold and the cylindrical inner mold in the application.

[0020] Figure 3 The schematic diagram of the circular table made of bricks outside the base model in the application.

[0021] Figure 4 The structure diagram of the circular table in the application.

[0022] Figure 5 A schematic diagram for making the movable cover of the present application.

[0023] Figure 6 Another perspective schematic diagram for making the movable cover of the present application.

[0024] Figure 7 A schematic diagram for making the movable cover of the present application.

[0025] Figure 8 A schematic diagram for making the movable cover of the present application.

[0026] Figure 9 A schematic diagram for making the movable cover of the present application. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Embodiment 1

[0028] Reference Figures 1-8 , the first embodiment of the present application provides a method for making a movable cover of a biogas tank, which comprises the following steps:

[0029] S1: providing a basin-shaped outer mold 1, the inner wall of which is paved with a film, a cylindrical inner mold 2 is placed in the middle of the inner cavity of the basin-shaped outer mold 1, the outer wall of the cylindrical inner mold 2 is wrapped with a film, and concrete is put into the gap between the basin-shaped outer mold 1 and the cylindrical inner mold 2, then the cylindrical inner mold 2 is taken out after the concrete is dried, and a base model 3 is obtained, which has a cylindrical inner cavity;

[0030] Since the inner wall of the basin-shaped outer mold 1 is paved with a film, and the outer wall of the cylindrical inner mold 2 is also wrapped with a film, the cylindrical inner mold 2 can be smoothly taken out after the concrete is coagulated without sticking to the coagulated concrete, and the concrete coagulated by air drying is the base model 3, which has two openings at the top and bottom, and the base model 3 is made of concrete, which is solid and durable, and can be reused;

[0031] S2: covering the base model 3 on the opening of the biogas tank 4, pasting a film on the outer wall of the base model 3, then applying multiple layers of concrete outside the film, and surrounding the multiple layers of concrete with bricks to form a circular table 5, then taking out the base model 3 after the concrete is air dried, and pouring two pressure rod rings 5a on both sides of the inner wall of the circular table 5;

[0032] The opening cover of the base model 3 can avoid the concrete and bricks from falling into the biogas tank 4 when the outer wall of the base model 3 is being built with bricks, and the circular table 5 built around the outer wall of the base model 3 can replace the base model 3, and has the functions of making and fixing the movable cover;

[0033] S3: placing a wooden board 6 in the opening of the biogas tank 4, connecting an iron wire 7 in the middle of the wooden board 6, placing a plurality of straight boards 8 on the wooden board 6 in turn at an angle with the horizontal plane perpendicular to the wooden board 6, pulling the iron wire 7 tightly, and making the plurality of straight boards 8 and the wooden board 6 seal the opening of the biogas tank 4, tying the other end of the iron wire 7 to the middle of a straight rod 9, placing the straight rod 9 on the top end of the circular table 5, and making the iron wire 7 in a tight state, and the iron wire 7 is sleeved with an air guide pipe 10;

[0034] The plurality of straight boards 8 and the wooden board 6 seal the opening of the biogas tank, which prevents the concrete from falling into the opening of the biogas tank, and the air guide pipe 10 has the function of providing air for the outside as a movable cover;

[0035] S4: laying a film on the upper end of the plurality of straight boards 8 and the wooden board 6, the opening of the biogas tank 4, and the inner wall of the circular table 5, sliding the air guide pipe 10 to be located on the upper end surface of the wooden board 6, pouring a layer of concrete at the opening of the biogas tank 4, placing a steel reinforcement support on the bottom layer of concrete, then continuing to pour concrete, and the concrete should not overflow the air guide pipe 10, and then inserting two handle rings 11 into the concrete which has not been dried;

[0036] The plurality of straight boards 8 and the wooden board 6 form the shape of the movable cover with the opening and the inner wall of the circular table 5, and the steel reinforcement support can be used to reinforce the firmness of the movable cover, and the movable cover can be taken out by pulling the two handle rings 11 after the concrete is dried;

[0037] S5: after the concrete in S4 is dried to form a movable cover 12, the iron wire 7 is cut off, the movable cover 12 is taken out through the handle rings 11, and then the wooden board 6 and the plurality of straight boards 8 are taken out by loosening the iron wire 7;

[0038] After the movable cover is taken out, the wooden board 6 and the plurality of straight boards 8 can be taken out, and the opening of the biogas tank is changed from a sealed state to a ventilated state.

[0039] Further, the cylindrical inner mold 2 is made of mud or built with bricks.

[0040] If the cylindrical inner mold 2 cannot be taken out, it can be made of mud or built with bricks, and the cylindrical inner mold 2 is broken after the concrete is dried, and then the base model 3 is taken out.

[0041] Further, the concrete in S1, S2, and S4 has a strength grade of C30 or C40.

[0042] The strength of the concrete can be selected as required.

[0043] Through the above steps, the movable cover 12 suitable for the opening of the biogas tank can be prepared, and the movable cover 12 can be tightly sealed with the opening of the biogas tank to prevent the biogas in the biogas tank from leaking out. Example 2

[0044] With reference to Figures 1-9 For the second embodiment of the present application, the embodiment is based on the previous embodiment, and the embodiment provides a manufacturing method of a movable cover of a biogas tank and application thereof, and the method comprises the following steps:

[0045] S1: A basin-shaped outer mold 1 is provided, a film is laid on the inner wall of the basin-shaped outer mold 1, a cylindrical inner mold 2 is placed in the middle of the inner cavity of the basin-shaped outer mold 1, the outer wall of the cylindrical inner mold 2 is wrapped with a film, and concrete is put into the gap between the basin-shaped outer mold 1 and the cylindrical inner mold 2. After the concrete is dried, the cylindrical inner mold 2 is taken out, and a base model 3 is obtained, which has a cylindrical inner cavity;

[0046] Since the inner wall of the basin-shaped outer mold 1 is laid with a film, and the outer wall of the cylindrical inner mold 2 is also wrapped with a film, the cylindrical inner mold 2 can be smoothly taken out after the concrete is coagulated without being adhered to the coagulated concrete. The concrete coagulated and dried is the base model 3, which has two openings at the top and bottom. The base model 3 is made of concrete, which is solid and durable, and can be repeatedly used;

[0047] S2: The base model 3 is covered on the opening of the biogas tank 4, a film is attached to the outer wall of the base model 3, and then multiple layers of concrete are applied outside the film. Bricks are laid around the outside of the multiple layers of concrete, so that the laid bricks form a circular table 5. After the concrete is dried, the base model 3 is taken out, and two pressure rod rings 5a are poured on the inner wall of the circular table 5;

[0048] Covering the openings of the base model 3 on the openings of the biogas tank 4 can avoid the concrete and bricks falling into the biogas tank when the bricks are laid on the outer wall of the base model 3. The circular table 5 laid around the outer wall of the base model 3 can replace the base model 3, which has the functions of manufacturing a movable cover and fixing the movable cover;

[0049] S3: A wooden board 6 is placed in the opening of the biogas tank 4, and an iron wire 7 is connected to the middle of the wooden board 6. A plurality of straight boards 8 are placed on the wooden board 6 in sequence at an angle that the horizontal plane is perpendicular to the wooden board 6. The iron wire 7 is pulled tight, so that the plurality of straight boards 8 and the wooden board 6 seal the opening of the biogas tank 4. The other end of the iron wire 7 is tied to the middle of a straight rod 9, and the straight rod 9 is placed on the top end of the circular table 5. The iron wire 7 is in a tight state, and a gas guide pipe 10 is sleeved on the iron wire 7;

[0050] The combination of the straight plates 8 and the wood plates 6 blocks the opening of the biogas tank, which prevents the concrete from falling into the opening of the biogas tank, and the air guide pipe 10 functions as a movable cover to supply air to the outside;

[0051] S4: A film is laid on the upper ends of the straight plates 8 and the wood plates 6, the opening of the biogas tank 4, and the inner wall of the circular table 5, the sliding air guide pipe 10 is located on the upper end surface of the wood plate 6, a layer of concrete is poured at the opening of the biogas tank 4, a steel support is placed on the bottom layer of concrete, then the concrete is continuously poured, the concrete should not overflow the air guide pipe 10, and then two handle rings 11 are inserted into the un-dried concrete;

[0052] The combination of the straight plates 8 and the wood plates 6 blocks the opening of the biogas tank, which prevents the concrete from falling into the opening of the biogas tank, and the air guide pipe 10 functions as a movable cover to supply air to the outside;

[0053] S5: After the concrete in S4 is dried, the iron wire 7 is cut, the movable cover 12 is taken out through the handle ring 11, then the wood plate 6 and the straight plates 8 are taken out by loosening the iron wire 7;

[0054] After the movable cover is taken out, the wood plate 6 and the straight plates 8 can be taken out, and the opening of the biogas tank is changed from a sealed state to a ventilated state.

[0055] Application of the movable cover of the biogas tank prepared by the preparation method: the movable cover 12 is placed in the opening of the biogas tank 4, the pressure rod 13 is inserted into the two pressure rod rings 5a, and the wedge-shaped block is placed at the bottom end of the pressure rod 13 and the upper end of the movable cover 12, so that the pressure rod 13 and the movable cover 12 cannot be moved.

[0056] The movable cover 12 prepared is placed in the opening of the biogas tank 4, which can just seal the opening. However, if there is too much biogas in the biogas tank, the gas pressure in the biogas tank will rise, and when it rises to a certain degree, the movable cover 12 will be opened, causing the biogas in the biogas tank to leak out. Therefore, the pressure rod 13 is inserted into the two pressure rod rings 5a, and the wedge-shaped block is placed at the bottom end of the pressure rod 13 and the upper end of the movable cover 12, so that the upper and lower ends of the wedge-shaped block just press against the bottom end of the pressure rod 13 and the upper end of the movable cover 12, respectively. Even if the gas pressure in the biogas tank is high, the movable cover 12 of the biogas tank will not be opened, causing the biogas to leak out. Residents can use gas through the air guide pipe 10 connected to the biogas tank.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A method of making a movable cover for a biogas digester, characterized by: The method comprises the following steps: S1: providing a basin-shaped outer mold (1), the inner wall of the basin-shaped outer mold (1) is paved with a film, a cylindrical inner mold (2) is placed in the middle of the inner cavity of the basin-shaped outer mold (1), the outer wall of the cylindrical inner mold (2) is wrapped with a film, concrete is put into the gap between the basin-shaped outer mold (1) and the cylindrical inner mold (2), the cylindrical inner mold (2) is taken out after the concrete is dried, and a base model (3) is obtained, the base model (3) has a cylindrical inner cavity; S2: covering the base model (3) on the opening of a biogas tank (4), pasting a film on the outer wall of the base model (3), then smearing multiple layers of concrete outside the film, and laying bricks around the outside of the multiple layers of concrete, so that the laid bricks enclose a circular table (5), the base model (3) is taken out after the concrete is air-dried, and two pressure rod rings (5a) are cast on the inner wall of the circular table (5); S3: placing a wooden board (6) in the opening of the biogas tank (4), the wooden board (6) is connected with a wire (7) in the middle, a plurality of straight boards (8) are placed on the wooden board (6) in sequence at an angle that the horizontal plane is perpendicular to the wooden board (6), the wire (7) is pulled tight, the plurality of straight boards (8) and the wooden board (6) seal the opening of the biogas tank (4), the other end of the wire (7) is tied to the middle of a straight rod (9), the straight rod (9) is placed on the top end of the circular table (5), the wire (7) is in a tight state, and a gas guide pipe (10) is sleeved outside the wire (7); S4: paving a film on the upper end of the plurality of straight boards (8) and the wooden board (6), the opening of the biogas tank (4), and the inner wall of the circular table (5), sliding the gas guide pipe (10) to be located on the upper end surface of the wooden board (6), pouring a layer of concrete at the opening of the biogas tank (4), placing a steel support on the bottom layer of concrete, then continuously pouring concrete, the concrete does not overflow the gas guide pipe (10), and then inserting two handle rings (11) into the concrete which is not air-dried; S5: after the concrete in S4 is air-dried to form a movable cover (12), the wire (7) is cut, the movable cover (12) is taken out through the handle rings (11), then the wooden board (6) and the plurality of straight boards (8) are taken out by loosening the wire (7).

2. The method of claim 1, wherein: The cylindrical inner mold (2) is made of mud or is made of bricks.

3. The method of claim 1, wherein: The concrete in S1, S2, and S4 has a strength grade of C30 or C40.

4. Use of the biogas tank movable cover made by the method according to any one of claims 1 to 3, characterized in that: The movable cover (12) is placed in the opening of the biogas tank (4), a pressure rod (13) is inserted into the two pressure rod rings (5a), a wedge-shaped block is placed at the bottom end of the pressure rod (13) and the upper end of the movable cover (12), and the pressure rod (13) and the movable cover (12) are not movable.

Images