Blow-molded plastic fertilizer flushing tank

Abstract

The utility model discloses a blow-molded plastic fertilizer flushing tank which comprises a blow-molded horizontal tank body, a radial charging connecting pipe is arranged at the top of the tank body, and a sealing rubber ring and a metal sealing cover are arranged at a pipe opening of the charging connecting pipe. A pressing assembly enabling the sealing rubber ring and the metal sealing cover to be pressed and sealed with a pipe opening of the charging connecting pipe is further arranged on the charging connecting pipe, the pressing assembly comprises a hoop fixed to the outer wall of the charging connecting pipe, two oppositely-arranged supporting lug plates are arranged on the hoop, a beam inserting opening is formed in each supporting lug plate, and the beam inserting openings are communicated with the beam inserting openings. The pressing assembly further comprises a pressing beam, the two ends of the pressing beam are movably inserted into the beam inserting openings of the supporting lug plates respectively, a threaded hole is formed in the center of the pressing beam, and a jacking screw capable of pressing the metal sealing cover downwards to enable the metal sealing cover to seal the pipe opening of the charging connecting pipe is arranged in the threaded hole. And a tightening screw screwing handle is arranged at the upper end of the tightening screw. The plastic fertilizer flushing tank has the advantages of high pressure bearing capacity, high fertilizer filling speed, good sealing effect and the like.

Description

Technical Field

[0001] The utility model relates to a chemical fertilizer water mixing and conveying device, in particular to a plastic fertilizer flushing tank produced by a blow molding process. Background Art

[0002] A fertilizer tank is a commonly used fertilizing device used to mix soluble solid fertilizer with water, transport it to the field through a pipeline, and drip-irrigate it to the roots of crops. CN 221670419 U discloses a plastic fertilizer tank, an early product of the applicant. The plastic fertilizer tank comprises a blow-molded horizontal tank body, with at least one axial downward pipe and one axial upward pipe provided at each end of the tank body. A loading plane is provided on the cylindrical surface of the tank body top, a circular loading port is provided on the loading plane, an internally threaded loading pipe is provided along the edge of the circular loading port, and an externally threaded sealing cap is installed within the internally threaded loading pipe, which is thread-sealed with the internally threaded loading pipe. The plastic fertilizer tank will not corrode during long-term use, is lightweight, and is easy to install and use. The loading port has a good sealing effect and strong pressure-bearing capacity, and the loading port will not leak during the fertilizer dissolving process. However, it was found during actual use that when the pressure inside the tank exceeds 0.3MPa, the threaded sealing connection between the external thread sealing cover and the internal thread loading tube is prone to failure, which in turn causes the liquid in the tank to leak. In order to overcome this defect, CN222235565 U discloses a plastic fertilizer tank, which is the applicant's second-generation product. The plastic fertilizer tank is provided with a loading port at the top of the tank barrel, and a loading port switch device is installed at the loading port. The loading port switch device is a loading valve that can open the loading port during loading to allow solid fertilizer particles to enter the interior of the tank body, and can also close the loading port after loading to prevent the pressurized liquid inside the tank body from overflowing from the loading port. The loading port of the plastic fertilizer tank is easy to open or close, the sealing effect of the loading port is not affected by the pressure inside the tank body, and repeated opening and closing for a long time will not affect the sealing effect. The tank body allows a high working pressure, which can meet the requirements of large flow and long-distance transportation of drip irrigation fertilizers. However, in actual use, the loading valve is easy to fall off from the loading pipe, and when filling fertilizer into the tank body, it will be restricted by the diameter of the loading valve, the fertilizer filling speed is slow, affecting the working efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a blow-molded plastic fertilizer flushing tank, which has the advantages of strong pressure bearing capacity, fast fertilizer filling speed, good sealing effect and the like.

[0004] The technical solution adopted to solve the technical problem is: a blow-molded plastic fertilizer flushing tank, including a blow-molded horizontal tank body, an axial water inlet pipe and an axial water outlet pipe are provided at the end of the tank body, a radial charging pipe is provided on the top of the tank body, a sealing rubber ring and a metal sealing cover that can seal the charging pipe mouth are provided at the charging pipe mouth, and a clamping assembly that presses the sealing rubber ring and the metal sealing cover to the charging pipe mouth is also provided on the charging pipe. The clamping assembly includes a clamp fixed to the outer wall of the charging pipe, two relatively arranged supporting ear plates are provided on the clamp, and a beam socket is provided on each of the supporting ear plates. The clamping assembly also includes a pressure beam whose two ends are movably inserted into the beam sockets of the supporting ear plates, a threaded hole is provided at the center position of the pressure beam, and a tightening screw that can press the metal sealing cover down so that the metal sealing cover seals the charging pipe mouth is installed in the threaded hole, and a tightening screw screwing handle is provided at the upper end of the tightening screw.

[0005] As a further improvement of the present invention, an annular boss is provided on the outer wall of the charging pipe to prevent the clamp from sliding upward.

[0006] As a further improvement of the present invention, the charging pipe is composed of an injection-molded prefabricated pipe and a blow-molded layer covering the outer wall of the injection-molded prefabricated pipe and integrally connected to the tank body.

[0007] As a further improvement of the present invention, an anti-stripping pattern is provided on the outer wall of the injection-molded preformed tube to prevent the injection-molded preformed tube from separating from the blow-molded layer.

[0008] As a further improvement of the present invention: the injection-molded prefabricated pipe is composed of a steel pipe and an injection-molded plastic layer covering the steel pipe.

[0009] As a further improvement of the present invention, a plurality of through holes are opened on the wall of the steel pipe, so that the injection-molded plastic layer on the inner wall of the steel pipe and the injection-molded plastic layer on the outer wall of the steel pipe are connected into one body.

[0010] As a further improvement of the present invention, an annular ridge is provided on the outer wall of the steel pipe at a position corresponding to the annular boss on the outer wall of the charging pipe.

[0011] As a further improvement of the present invention: the anti-stripping grooves are spiral grooves or multiple annular grooves formed on the surface of the injection-molded plastic layer on the outer wall of the steel pipe.

[0012] As a further improvement of the present invention, a positioning ring is provided at the center of the upper surface of the metal sealing cover and cooperates with the lower end of the tightening screw.

[0013] As a further improvement of the present invention, a safety valve seat is provided on the top of the tank body, and a safety valve is installed in the safety valve seat.

[0014] Beneficial effect: The blow-molded plastic fertilizer flushing tank of the utility model adopts a sealing rubber ring and a metal sealing cover that can seal the charging pipe mouth, and a pressing component that presses the sealing rubber ring and the metal sealing cover to the charging pipe mouth to seal. The pressing component includes a clamp fixed to the outer wall of the charging pipe, and two supporting ear plates that are oppositely arranged are provided on the clamp, and a beam socket is provided on each of the supporting ear plates. The pressing component also includes a pressure beam whose two ends are movably inserted into the beam sockets of the supporting ear plates, and a threaded hole is provided at the center of the pressure beam. A device that can press the metal sealing cover down is installed in the threaded hole so that the metal sealing cover can be pressed The technical feature of the tightening screw for sealing the opening of the charging pipe and the tightening screw turning handle installed at the upper end of the tightening screw frees the diameter of the charging pipe in the blow-molded plastic fertilizer tank of the utility model from the limitation of the valve diameter and can be made larger according to the needs of the user, thereby making the fertilizer filling speed faster, meeting the needs of fertilizing large areas of farmland and improving the working efficiency. At the same time, the use of a compression-type metal sealing cover to seal the opening of the charging pipe has a stronger pressure-bearing capacity and better sealing effect than the use of threaded seals. In addition, the compression assembly in the blow-molded plastic fertilizer tank of the utility model has the advantages of simple structure, easy use, high reliability, and easy maintenance. The technical feature of the annular boss on the outer wall of the charging pipe to prevent the clamp from sliding upwards makes the clamp more fixed, preventing the metal sealing cover from being compressed during use and causing the clamp to slide upward along the outer wall of the charging pipe, thereby ensuring the sealing effect. The technical feature that the charging nozzle is composed of an injection-molded preformed tube and a blow-molded layer covering the outer wall of the injection-molded preformed tube and integrally connected to the tank body compensates for the shortcomings of the charging nozzle formed by blow molding, which is insufficient in strength and easily deformed and damaged under pressure during use. The technical feature that the outer wall of the injection-molded preformed tube is provided with an anti-stripping device to prevent the injection-molded preformed tube from separating from the blow-molded layer increases the contact area between the injection-molded preformed tube and the blow-molded layer, and the welding effect is better, and it will not separate or delaminate during long-term use. The technical feature that the injection-molded preformed tube is composed of a steel tube and an injection-molded plastic layer covering the steel tube can prevent the injection-molded preformed tube from softening and deforming due to heat during the blow-molding process, and further improve the pressure-bearing capacity of the charging nozzle. The invention utilizes a technical feature of providing multiple through-holes in the steel pipe wall, thereby integrally connecting the injection-molded plastic layer on the inner wall of the steel pipe with the injection-molded plastic layer on the outer wall of the steel pipe. This overcomes the drawback of injection-molded plastic not easily bonding to metal, allowing the injection-molded plastic layer to firmly wrap the steel pipe and prevent the plastic layer from loosening or falling off the steel pipe even after long-term use. Furthermore, the invention utilizes a technical feature of providing an annular ridge on the outer wall of the steel pipe at a position corresponding to the annular boss on the outer wall of the charging nozzle, thereby preventing the annular boss formed by the plastic from being insufficiently strong, thereby making the blow-molded plastic fertilizer flushing tank of the invention more reliable.Due to the technical feature that the anti-stripping lines are spiral grooves or multiple annular grooves formed on the surface of the injection-molded plastic layer on the outer wall of the steel pipe, the connection between the injection-molded plastic layer and the blow-molded layer is more secure, and the spiral grooves or multiple annular grooves on the surface of the injection-molded plastic layer are easier to process. Due to the technical feature that a positioning ring is provided at the center position of the upper surface of the metal sealing cover to cooperate with the lower end of the tightening screw, the lower end of the tightening screw can be accurately pressed against the center position of the metal sealing cover, so that the pressure applied by the metal sealing cover to the loading pipe opening is more evenly distributed and the sealing effect is better. Due to the technical feature that a safety valve seat is embedded in the top of the tank body and a safety valve is installed in the safety valve seat, when the pressure in the tank body reaches the safety valve release pressure, the safety valve will automatically release the pressure to prevent the tank body from bursting, making the blow-molded plastic fertilizer flushing tank of the utility model safer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The blow-molded plastic fertilizer flushing tank of the present invention will be described in further detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of a blow-molded plastic fertilizer flushing tank of the present invention;

[0017] Figure 2 This is an exploded view of the compression assembly portion of the blow-molded plastic fertilizer flushing tank of the utility model;

[0018] Figure 3 This is an enlarged partial cross-sectional view of the charging pipe in the blow-molded plastic fertilizer flushing tank of the present invention;

[0019] Figure 4 This is a three-dimensional diagram of the injection-molded prefabricated pipe in the blow-molded plastic fertilizer flushing tank of the utility model;

[0020] Figure 5 The utility model is a stereoscopic view of a steel pipe in an injection-molded prefabricated pipe in a blow-molded plastic fertilizer flushing tank. DETAILED DESCRIPTION

[0021] like Figure 1 、 Figure 2As shown, the blow-molded plastic fertilizer tank of the present invention includes a blow-molded horizontal tank body 1, an axial water inlet pipe 16 and an axial water outlet pipe 15 are provided at the end of the tank body, a radial charging pipe 13 is provided on the top of the tank body, a sealing rubber ring 4 and a metal sealing cover 5 are provided at the charging pipe opening to seal the charging pipe opening, and a clamping assembly is further provided on the charging pipe to press the sealing rubber ring and the metal sealing cover to the charging pipe opening to seal, the clamping assembly includes a hoop 14 fixed to the outer wall of the charging pipe, two supporting ear plates 6 arranged oppositely are provided on the hoop, and a beam plug is provided on each of the supporting ear plates Mouth 12, the clamping assembly also includes a pressure beam 7 whose two ends are movably inserted into the beam socket of the supporting ear plate, a threaded hole 10 is opened at the center of the pressure beam, and a tightening screw 9 is installed in the threaded hole to press the metal sealing cover down so that the metal sealing cover can seal the charging pipe mouth, a tightening screw screw handle 8 is installed at the upper end of the tightening screw, and a positioning ring 11 that cooperates with the lower end of the tightening screw is provided at the center position of the upper surface of the metal sealing cover. A safety valve seat 2 is also embedded in the top of the tank body, and a safety valve 3 is installed in the safety valve seat. An annular boss 17 is provided on the outer wall of the charging pipe to prevent the clamp from sliding upward.

[0022] like Figure 3 As shown, the charging pipe is composed of an injection molded prefabricated pipe and a blow molded layer 20 coated on the outer wall of the injection molded prefabricated pipe and connected to the tank body as a whole. The injection molded prefabricated pipe is composed of a steel pipe 18 and an injection molded plastic layer 19 coated on the steel pipe. Since the charging pipe is a gyroid, Figure 3 The other half of the cross-sectional view symmetrical to the shown figure is omitted.

[0023] like Figure 5 As shown, a plurality of through holes 23 are opened on the wall of the steel pipe, so that the injection-molded plastic layer on the inner wall of the steel pipe and the injection-molded plastic layer on the outer wall of the steel pipe are fused and connected into one body, and an annular ridge 24 is provided on the outer wall of the steel pipe at the position of the annular boss on the outer wall of the charging pipe.

[0024] like Figure 4 As shown, the outer wall of the injection molded preformed tube 21 is provided with anti-stripping grooves to prevent the plastic preformed tube from separating from the blow molded layer. The anti-stripping grooves are spiral grooves or multiple annular grooves 22 formed on the surface of the injection molded plastic layer on the outer wall of the steel tube.

[0025] The metal sealing cover, hoop, supporting ear plate, tightening screw and pressure beam in the blow-molded plastic fertilizer flushing tank of the utility model are all made of hard metals such as iron, steel, stainless steel, aluminum, aluminum alloy or copper alloy. The supporting ear plate can be fixed to the hoop by welding or can be stamped integrally with the hoop plate constituting the hoop. The two hoop plates of the hoop are tightened and fixed by two bolts.

[0026] The blow-molded plastic fertilizer flushing tank of the utility model has been subjected to a pressure test and the interior thereof can withstand a working pressure of 5 kg / cm2, and can meet the fertilizer flushing needs of large-area farmland.

Claims

1. A blow-molded plastic fertilizer tank, comprising a blow-molded horizontal tank body, with an axial water inlet pipe and an axial water outlet pipe provided at the end of the tank body, characterized in that: A radial charging pipe is provided on the top of the tank body, and a sealing rubber ring and a metal sealing cover that can seal the charging pipe mouth are provided at the charging pipe mouth. A clamping assembly is also provided on the charging pipe for pressing and sealing the sealing rubber ring and the metal sealing cover with the charging pipe mouth. The clamping assembly includes a clamp fixed to the outer wall of the charging pipe, and two oppositely arranged supporting ear plates are provided on the clamp, and each of the supporting ear plates is provided with a beam socket. The clamping assembly also includes a pressure beam whose two ends are movably inserted into the beam sockets of the supporting ear plates, and a threaded hole is provided at the center of the pressure beam. A tightening screw that can press the metal sealing cover down so that the metal sealing cover seals the charging pipe mouth is installed in the threaded hole, and a tightening screw screwing handle is provided at the upper end of the tightening screw.

2. The blow-molded plastic fertilizer flushing tank according to claim 1, characterized in that: An annular boss is provided on the outer wall of the charging pipe to prevent the clamp from sliding upward.

3. The blow-molded plastic fertilizer flushing tank according to claim 2, characterized in that: The charging connecting pipe is composed of an injection-molded prefabricated pipe and a blow-molded layer covering the outer wall of the injection-molded prefabricated pipe and integrally connected with the tank body.

4. The blow-molded plastic fertilizer flushing tank according to claim 3, characterized in that: Anti-stripping lines are provided on the outer wall of the injection-molded prefabricated tube to prevent the injection-molded prefabricated tube from separating from the blow-molded layer.

5. The blow-molded plastic fertilizer flushing tank according to claim 4, characterized in that: The injection-molded prefabricated pipe consists of a steel pipe and an injection-molded plastic layer covering the steel pipe.

6. The blow-molded plastic fertilizer flushing pot according to claim 5, characterized in that: A plurality of through holes are opened on the pipe wall of the steel pipe, so that the injection-molded plastic layer on the inner wall of the steel pipe and the injection-molded plastic layer on the outer wall of the steel pipe are connected into one body.

7. The blow-molded plastic fertilizer flushing pot according to claim 6, characterized in that: An annular ridge is provided on the outer wall of the steel pipe at a position corresponding to the annular boss on the outer wall of the charging pipe.

8. The blow-molded plastic fertilizer flushing pot according to any one of claims 4 to 7, characterized in that: The anti-stripping grooves are spiral grooves or multiple annular grooves formed on the surface of the injection-molded plastic layer on the outer wall of the steel pipe.

9. The blow-molded plastic fertilizer flushing pot according to any one of claims 3 to 7, characterized in that: A positioning ring that cooperates with the lower end of the tightening screw is provided at the center position of the upper surface of the metal sealing cover.

10. The blow-molded plastic fertilizer flushing pot according to any one of claims 1 to 7, characterized in that: A safety valve seat is also provided on the top of the tank body, and a safety valve is installed in the safety valve seat.

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