Plastic fertilizing tank

Abstract

The utility model discloses a plastic fertilization tank which comprises a horizontal tank body formed by blow molding, an axial water inlet connecting pipe arranged at the lower part of a tank body end socket, a water outlet connecting pipe arranged at the upper part of the tank body end socket, a water spraying pipe inserted in the axial water inlet connecting pipe along the length direction of a tank barrel, and a plurality of water spraying holes arranged on the pipe wall of the water spraying pipe, the top of the tank barrel is provided with a charging opening, the charging opening is provided with a charging opening switch device, and the charging opening switch device is a charging valve which can open the charging opening during charging so as to enable solid fertilizer particles to enter the tank body, and can seal the charging opening after charging so as to prevent pressure liquid in the tank body from overflowing from the charging opening. The opening or closing operation of the charging port of the plastic fertilizing tank is convenient, the sealing effect of the charging port is not influenced by the internal pressure of the tank body, the sealing effect is not influenced after the charging port is repeatedly opened and closed for a long time, the allowable working pressure of the tank body is high, and the use requirements of large-flow and long-distance drip irrigation fertilizer conveying can be met.

Description

Technical Field

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

[0002] Fertilizer tanks are used in agricultural production to mix soluble solid fertilizers with water, and then transport them to the fields and drip irrigation to the roots of crops through pipelines. They are an important part of the drip irrigation system. The tank body of the fertilizer tank in the prior art is mostly made of metal. Since fertilizers have a certain corrosiveness, the service life of such metal fertilizer tanks is short, and rust residues are easily blocked by the drip irrigation system. In addition, the weight of the metal fertilizer tank is also large, which is not conducive to installation and transportation. When a plastic tank is used as the tank body of the fertilizer tank, although the shortcomings of the metal fertilizer tank such as easy corrosion and heavy weight can be overcome, the pressure bearing capacity of the plastic fertilizer tank is poor, especially when an ordinary external thread feeding tube is used, the feeding cap used to seal the external thread feeding tube is very easy to leak or even fall off under the water pressure in the tank, so that the plastic fertilizer tank has not been able to replace the metal fertilizer tank. The applicant applied for a plastic fertilizer tank earlier, including a blow-molded horizontal tank body, at least one axial downward pipe and one axial upward pipe at both ends of the tank body, a loading plane on the cylindrical surface at the top of the tank body, a circular loading port on the loading plane, an internal threaded loading pipe extending from the loading plane into the tank body along the edge of the circular loading port, and an external threaded sealing cap that matches the threaded sealing of the internal threaded loading pipe installed in the internal threaded loading pipe. The plastic fertilizer tank will not corrode in long-term use, is light in weight, easy to install and use, has a good sealing effect and strong pressure bearing capacity at the feeding port, and will not leak at the feeding port during the fertilizer dissolving process. However, it was found in actual use that when the pressure in the tank exceeded 0.3MPa, the threaded sealing connection between the external threaded sealing cap and the internal threaded loading pipe was prone to failure, which led to leakage of liquid in the tank. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to provide a plastic fertilizer tank, the filling port of which is easy to open or close, the sealing effect of the filling port is not affected by the internal pressure of 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 and can meet the requirements of large flow and long-distance transportation of drip irrigation fertilizers.

[0004] The technical solution adopted to solve the technical problem: a plastic fertilizer tank, including a blow-molded horizontal tank body, the tank body is composed of a tank barrel and tank body heads at both ends of the tank barrel, an axial water inlet pipe is provided at the lower part of the tank body head, a water outlet pipe is provided at the upper part of the tank body head, a water spray pipe arranged along the length direction of the tank barrel is inserted in the axial water inlet pipe, a plurality of water spray holes are opened on the pipe wall of the water spray pipe, a loading port for loading solid fertilizer particles into the tank body is provided at the top of the tank barrel, 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 the solid fertilizer particles to enter the tank body, and can close the loading port after loading to prevent the pressure liquid in the tank body from overflowing from the loading port.

[0005] As a further improvement of the utility model: a radial charging pipe connected to the tank barrel as a whole is provided at the charging port, and the charging valve is installed on the radial charging pipe.

[0006] As a further improvement of the utility model: the radial charging connecting pipe protrudes from the outer wall of the tank barrel, and is provided with an external thread for connecting the charging valve.

[0007] As a further improvement of the utility model: a safety valve installation hole is also provided on the top of the tank barrel, and a safety valve is installed in the safety valve installation hole.

[0008] As a further improvement of the utility model: the outer walls of the axial water inlet pipe and the water outlet pipe are respectively provided with external threads for connecting valves or external pipelines.

[0009] As a further improvement of the utility model: a water inlet valve is connected to the end of the axial water inlet pipe, and a water outlet valve is connected to the end of the water outlet pipe.

[0010] As a further improvement of the utility model: an axial water inlet pipe is provided at the lower part of the head at both ends of the tank body, one of which is connected to the external water supply pipe, and the other is a blind pipe with no hole at the end or is closed by a valve.

[0011] As a further improvement of the utility model: the loading valve, the water inlet valve and the water outlet valve are all plastic ball valves.

[0012] As a further improvement of the utility model: an internally threaded metal valve seat is pre-buried in the safety valve installation hole, and the safety valve is screwed and fixed on the internally threaded metal valve seat.

[0013] As a further improvement of the present invention: the inner diameter of the radial charging tube is not less than 50 mm.

[0014] Beneficial effects: The plastic fertilizer tank of the utility model adopts an axial water inlet pipe provided at the lower part of the tank body head, a water outlet pipe provided at the upper part of the tank body head, a water spray pipe arranged along the length direction of the tank barrel is inserted in the axial water inlet pipe, a plurality of water spray holes are opened on the pipe wall of the water spray pipe, a loading port for loading solid fertilizer particles into the tank body is provided at the top of the tank barrel, a loading port switch device is installed at the loading port, the loading port switch device is a technical feature of a loading valve that can open the loading port during loading to allow the solid fertilizer particles to enter the tank body, and can seal the loading port after loading to prevent the pressure liquid in the tank body from overflowing from the loading port, the loading valve is opened during loading, the solid fertilizer particles are loaded into the tank body through the loading valve, after loading, the loading valve is closed, water is injected into the tank body through the axial water inlet pipe, the fertilizer and water are mixed and dissolved, enter the external pipeline through the water outlet pipe, and finally drip irrigate to the roots of crops. Since the charging valve is used to close the charging port, the opening or closing operation of the charging port of the fertilizer tank is more convenient than the screw cap structure of the early fertilizer tank, and the sealing effect of the charging port is not affected by the internal pressure of the tank body. The tank body allows a higher working pressure, which can meet the use requirements of large flow and long-distance delivery of drip irrigation fertilizer. Due to the technical features that the radial charging pipe connected to the tank barrel as a whole is provided at the charging port, and the charging valve is installed on the radial charging pipe, the assembly and connection of the charging valve are more convenient and reliable. Due to the technical features that the radial charging pipe protrudes from the outer wall of the tank barrel and the radial charging pipe is provided with an external thread for connecting the charging valve, the plastic fertilizer tank of the utility model can select a valve with an internal thread interface in the prior art as the charging valve, the parts source is wider, which is conducive to reducing production costs, and when connected, the internal thread valve interface is screwed outside the radial charging pipe, and the radial charging pipe is tightly wrapped, so that the pressure resistance effect of the connection between the radial charging pipe and the charging valve is better. Due to the technical features that a safety valve installation hole is provided on the top of the tank tube and a safety valve is installed in the safety valve installation hole, the pressure inside the tank can be automatically released when the pressure exceeds the safety pressure, avoiding the tank body bursting due to excessive liquid pressure inside the tank caused by blockage of the water outlet pipe or other reasons during use, thereby improving the safety performance of the fertilizer tank. Due to the technical features that external threads for connecting valves or external pipelines are provided on the outer walls of the axial water inlet pipe and the water outlet pipe, on the one hand, it is convenient to connect the axial water inlet pipe and the water outlet pipe with the external pipeline or valve, and on the other hand, it is convenient to screw the external pipeline or valve on the outer circumference of the water outlet pipe and the axial water inlet pipe, thereby increasing the strength of the water outlet pipe and the axial water inlet pipe, making the pressure bearing effect of the connection part better and the connection more reliable. Due to the technical features that the end of the axial water inlet pipe is connected to the water inlet valve and the end of the water outlet pipe is connected to the water outlet valve, the equipment is more convenient to inspect, maintain and control.Due to the technical feature that an axial water inlet pipe is provided at the lower part of the end cap at both ends of the tank body, one of the axial water inlet pipes is connected to the external water supply pipe, and the other axial water inlet pipe is a blind pipe with no hole at the end or is closed by a valve, the direction of the axial water inlet pipe can be selected according to the site conditions, making the installation of the equipment more convenient. Due to the technical feature that the charging valve, the water inlet valve, and the water outlet valve are all plastic ball valves, not only can the valves be opened and closed conveniently and quickly, but also the corrosion resistance of the plastic ball valve is better, and the flexible opening and closing and sealing effect can be maintained after long-term use. Due to the technical feature that an internal thread metal valve seat is pre-buried in the safety valve installation hole, and the safety valve is screwed and fixed on the internal thread metal valve seat, the disadvantage that it is difficult to process a small diameter internal thread of the blow-molded tank barrel is overcome, making the installation of the safety valve more convenient and more secure. Due to the reasonable limitation of the inner diameter of the radial charging pipe, the plastic fertilizer tank of the utility model has a larger charging channel while ensuring the sealing and pressure-bearing effects, and can fill and fix granular fertilizers faster to meet the requirements of agricultural production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The plastic fertilizer tank of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 It is an axial section structure diagram of the plastic fertilizer tank of the utility model. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, the plastic fertilizer tank of the utility model comprises a blow-molded horizontal tank body, the tank body consists of a tank barrel 6 and two tank body heads 9 at both ends of the tank barrel, an axial water inlet pipe 10 parallel to the axis of the tank barrel is provided at the lower part of the tank body head, a water outlet pipe 2 is provided at the upper part of the tank body head, a water spray pipe 11 arranged along the length direction of the tank barrel is inserted in the axial water inlet pipe, a plurality of water spray holes 12 are opened on the pipe wall of the water spray pipe, a charging port 5 for charging solid fertilizer particles into the tank body is provided at the top of the tank barrel, a charging port switch device is installed at the charging port, the charging port switch device is a charging valve 4 which can open the charging port during charging to allow the solid fertilizer particles to enter the tank body, and can close the charging port after charging to prevent the pressure liquid in the tank body from overflowing from the charging port.

[0018] Preferably, a radial charging pipe 3 integrally connected to the tank barrel is provided at the charging port, and the charging valve is installed on the radial charging pipe. The radial charging pipe protrudes from the outer wall of the tank barrel, and an external thread for connecting the charging valve is provided on the radial charging pipe. With the radial charging pipe of this structure, the installation of the charging valve is more convenient, and the internal thread pipe of the charging valve is wrapped outside the radial connecting pipe, which improves the strength of the connection between the radial connecting pipe and the charging valve, especially when the pressure in the tank body increases, the sealing effect of the connection between the radial connecting pipe and the charging valve is better and less prone to leakage. In actual production and use, the internal threaded charging pipe extending into the tank body adopted in the Chinese patent application with application number 2024202870376 or 2024300826073 can also be used according to the situation. When the internal threaded charging pipe is used, a charging valve with an external thread interface needs to be used.

[0019] Preferably, the inner diameter of the radial loading tube is not less than 50 mm, and when the loading valve connected to the radial loading tube is fully opened, the diameter of the internal passage of the valve is also not less than 50 mm.

[0020] Preferably, a safety valve installation hole is also provided on the top of the tank barrel, and a safety valve 7 is installed in the safety valve installation hole.

[0021] Preferably, an internally threaded metal valve seat 8 is pre-buried in the safety valve mounting hole, and the safety valve is screwed and fixed on the internally threaded metal valve seat.

[0022] Preferably, the outer walls of the axial water inlet pipe and the water outlet pipe are respectively provided with external threads for connecting valves or external pipelines. During installation and use, the end of the axial water inlet pipe can be connected with a water inlet valve 13, and the end of the water outlet pipe can be connected with a water outlet valve 1 according to actual conditions.

[0023] Preferably, an axial water inlet pipe is provided at the lower part of the head at both ends of the tank body, and the axes of the two axial water inlet pipes coincide. One of the axial water inlet pipes is connected to the external water supply pipe, and the other axial water inlet pipe is a blind pipe with no hole at the end or is closed by a valve. Figure 1 In the embodiment, a blind pipe structure without openings is used. In this way, it is possible to choose at which end of the tank body the axial water inlet pipe is to be arranged according to the site conditions. The two ends of the water spray pipe can also be respectively inserted into the axial water inlet pipe, so that the water spray pipe can be conveniently fixed inside the tank body without other parts.

[0024] The charging valve, water inlet valve and water outlet valve in the plastic fertilizer tank of the utility model are preferably plastic ball valves. Other corrosion-resistant and easy-to-operate valves can also be selected in actual production and use.

[0025] The tank body, radial loading pipe, axial water inlet pipe and outlet pipe of the plastic fertilizer tank of the utility model are produced by a one-time blow molding process, and the minimum thickness of each part is not less than 3 mm. The internal thread metal valve seat is pre-fixed to the mold before blow molding, so as to be embedded in the cylinder wall of the tank cylinder after blow molding.

[0026] The plastic fertilizer tank of the utility model uses a charging valve to replace the threaded sealing cover in the prior art, thereby overcoming the shortcomings of the threaded sealing cover, such as poor pressure bearing capacity and poor sealing effect. In particular, the plastic thread is more likely to fail in sealing due to repeated twisting and opening and closing of the plastic thread. The plastic fertilizer tank of the utility model can withstand higher working pressure, and the sealing effect will not be affected by repeated opening and closing of the charging valve for a long time.

Claims

1. A plastic fertilizer tank, comprising a blow-molded horizontal tank body, the tank body consisting of a tank barrel and tank body heads at both ends of the tank barrel, an axial water inlet pipe is provided at the lower part of the tank body head, and a water outlet pipe is provided at the upper part of the tank body head, wherein: A water spray pipe arranged along the length direction of the tank barrel is inserted in the axial water inlet pipe, and a plurality of water spray holes are opened on the pipe wall of the water spray pipe. A loading port for loading solid fertilizer particles into the tank body is provided 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 the solid fertilizer particles to enter the tank body, and can also close the loading port after loading to prevent the pressure liquid inside the tank body from overflowing from the loading port.

2. The plastic fertilizer tank according to claim 1, characterized in that: A radial charging connecting pipe which is integrally connected with the tank barrel is arranged at the charging port, and the charging valve is installed on the radial charging connecting pipe.

3. The plastic fertilizer tank according to claim 2 is characterized in that: The radial charging connecting pipe protrudes from the outer wall of the tank barrel, and is provided with an external thread for connecting a charging valve.

4. The plastic fertilizer tank according to any one of claims 1 to 3, characterized in that: External threads for connecting valves or external pipelines are respectively arranged on the outer walls of the axial water inlet pipe and the water outlet pipe.

5. The plastic fertilizer tank according to claim 4 is characterized in that: The end of the axial water inlet pipe is connected with a water inlet valve, and the end of the water outlet pipe is connected with a water outlet valve.

6. The plastic fertilizer tank according to claim 5, characterized in that: The loading valve, water inlet valve and water outlet valve are all plastic ball valves.

7. The plastic fertilizer tank according to claim 6 is characterized in that: An axial water inlet pipe is respectively provided at the lower part of the head at both ends of the tank body, one of which is connected to the external water supply pipe, and the other is a blind pipe with no hole at the end or is closed by a valve.

8. The plastic fertilizer tank according to claim 7, characterized in that: A safety valve mounting hole is also provided on the top of the tank barrel, and a safety valve is installed in the safety valve mounting hole.

9. The plastic fertilizer tank according to claim 8, characterized in that: An internal thread metal valve seat is pre-buried in the safety valve installation hole, and the safety valve is screwed and fixed on the internal thread metal valve seat.

10. The plastic fertilizer tank according to claim 2 or 3, characterized in that: The inner diameter of the radial charging pipe is not less than 50 mm.

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