Liquid ammonia filling machine

Abstract

The application discloses a liquid ammonia filling machine, and relates to the technical field of liquid ammonia filling, which comprises a filling device, a liquid ammonia storage bottle, a connecting head and a lifting device, wherein the filling device comprises a filling storage tank, a liquid ammonia conveying connecting pipe, a first control valve, a discharge pipe and a second control valve; the top of the liquid ammonia storage bottle is provided with a feeding head, and the upper end of the feeding head is provided with external threads; the top end of the connecting head is sleeved on the lower end of the discharge pipe, the connecting head can slide on the discharge pipe, the inner wall of the connecting head is provided with internal threads matched with the external threads, the connecting head is threadedly connected with the feeding head, the lower end of the discharge pipe is provided with a limiting block, the limiting block can limit the position of the downward movement of the connecting head, and the top of the lifting device is used for placing the liquid ammonia storage bottle and can drive the liquid ammonia storage bottle to ascend or descend, thereby improving the stability of the connection between the liquid ammonia storage bottle and the filling storage tank, facilitating and quickening the operation, and shortening the overall time consumption of the filling process.

Description

Technical Field

[0001] This invention relates to the field of liquid ammonia filling technology, and in particular to a liquid ammonia filling machine. Background Technology

[0002] Liquid ammonia is a colorless liquid with a strong, pungent odor. As an important chemical raw material, ammonia is typically liquefied from gaseous ammonia gas through pressurization or cooling for convenient transportation and storage. Ammonia is readily soluble in water, forming an alkaline solution of ammonium hydroxide. Liquid ammonia is mostly stored in pressure-resistant steel cylinders or tanks. Liquid ammonia filling is a crucial step in the industrial production and use of liquid ammonia.

[0003] In the process of filling liquid ammonia with existing liquid ammonia filling machines, if the filling nozzle connection is unstable, the filling nozzle may detach, causing liquid ammonia to leak from the connection point, which may easily lead to safety accidents. Therefore, it is necessary to securely connect the filling nozzle and the liquid ammonia storage bottle. However, the overall connection between the filling nozzle and the liquid ammonia storage bottle takes a long time. Therefore, the present invention provides a liquid ammonia filling machine. Summary of the Invention

[0004] The purpose of this invention is to provide a liquid ammonia filling machine to solve the problems existing in the prior art, improve the stability of the connection between the liquid ammonia storage bottle and the filling tank, make the operation convenient and fast, and shorten the overall time of the filling process.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a liquid ammonia filling machine, comprising: a filling device, a liquid ammonia storage bottle, a connector, and a lifting device. The filling device includes a filling tank, a liquid ammonia conveying connecting pipe, a first control valve, a discharge pipe, and a second control valve. One end of the liquid ammonia conveying connecting pipe is connected to and communicates with the top of the filling tank. The first control valve is disposed on the liquid ammonia conveying connecting pipe. The discharge pipe is disposed at the bottom of the filling device. The second control valve is disposed on the discharge pipe. A filling nozzle is disposed at the bottom of the discharge pipe. A feeding head is disposed at the top of the liquid ammonia storage bottle. A third control valve is disposed on the feeding head. The filling nozzle is used to insert into the feeding head. The upper end of the feeding head is provided with... It has an external thread; the top end of the connector is sleeved on the lower end of the discharge pipe, the connector can slide along the length of the discharge pipe, the inner wall of the connector is provided with an internal thread that matches the external thread, the connector and the feed head can be threadedly connected by the external thread and the internal thread, the lower end of the discharge pipe is provided with a limit block, the limit block can limit the downward movement of the connector so that the connector can fasten the feed head and the discharge pipe, the lifting device is used to be set below the discharge pipe, the top of the lifting device is used to place the liquid ammonia storage bottle and can drive the liquid ammonia storage bottle to rise or fall.

[0007] Preferably, it also includes a sealing gasket, which is fixedly connected to the lower end of the discharge pipe at the position for contact with the feed head.

[0008] Preferably, the lifting device includes a base and a lifting platform, the lifting platform being slidably connected to the base, and capable of rising or falling in the height direction and maintaining the moved position.

[0009] Preferably, it also includes an electric hydraulic cylinder, wherein the fixed end of the electric hydraulic cylinder is fixedly connected to the base, and the movable end of the electric hydraulic cylinder is fixedly connected to the lifting platform.

[0010] Preferably, it also includes a guide seat, which is vertically fixed to the top of the base and slidably connected to the lifting platform.

[0011] Preferably, the guide seat has a cylindrical structure, and the lifting platform is sleeved on the outside of the guide seat.

[0012] Preferably, it also includes a positioning seat and a placement slot. The positioning seat is fixedly disposed on the top of the lifting platform, and the placement slot is disposed on the positioning seat. The placement slot is used to fit with the bottom of the liquid ammonia storage bottle to fix the liquid ammonia storage bottle placed in the placement slot.

[0013] Preferably, the limiting block is an annular limiting block, the inner wall of the annular limiting block is fixedly connected to the outer wall of the discharge pipe, and the connector includes an integrally connected top wall and side wall. The top wall has an annular structure, the inner diameter of the top wall is smaller than the outer diameter of the limiting block and larger than the outer diameter of the discharge pipe, and the inner diameter of the side wall is larger than the outer diameter of the limiting block.

[0014] The present invention achieves the following technical effects compared to the prior art:

[0015] This invention provides a liquid ammonia filling machine. The liquid ammonia storage bottle is positioned on a lifting device, which moves the liquid ammonia storage bottle upward. Then, the filling nozzle enters the feed head, and the feed head squeezes the discharge pipe to form a seal. By screwing the connector and the feed head together, the connection stability is improved. By opening the first control valve, the second control valve, and the third control valve, liquid ammonia can be filled into the liquid ammonia storage bottle. The operation is convenient and fast, shortening the overall filling time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the liquid ammonia filling machine provided by the present invention;

[0018] Figure 2 A schematic diagram of the assembly structure of the discharge pipe and the inlet head in the liquid ammonia filling machine provided by the present invention;

[0019] Figure 3 This is a cross-sectional view of the lifting device in the liquid ammonia filling machine provided by the present invention;

[0020] Figure 4 A schematic diagram of the lifting platform, positioning seat, and placement trough in the liquid ammonia filling machine provided by the present invention;

[0021] In the diagram: 1. Filling tank; 2. Liquid ammonia conveying connection pipe; 3. First control valve; 4. Discharge pipe; 5. Second control valve; 6. Third control valve; 7. Feed head; 8. Liquid ammonia storage bottle; 9. Lifting device; 10. Positioning seat; 11. Connector; 12. Limiting block; 13. Sealing gasket; 14. Filling nozzle; 15. Base; 16. Lifting platform; 17. Placement trough; 18. Electric hydraulic cylinder; 19. Guide seat. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The purpose of this invention is to provide a liquid ammonia filling machine to solve the problems existing in the prior art, improve the stability of the connection between the liquid ammonia storage bottle and the filling tank, make the operation convenient and fast, and shorten the overall time of the filling process.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] This invention provides a liquid ammonia filling machine, such as Figures 1-4 As shown, the device includes: a filling device, a liquid ammonia storage bottle 8, a connector 11, and a lifting device 9. The filling device includes a filling tank 1, a liquid ammonia conveying pipe 2, a first control valve 3, a discharge pipe 4, and a second control valve 5. One end of the liquid ammonia conveying pipe 2 is connected to and communicates with the top of the filling tank 1. The first control valve 3 is located on the liquid ammonia conveying pipe 2. The discharge pipe 4 is located at the bottom of the filling device. The second control valve 5 is located on the discharge pipe 4. A filling nozzle 14 is located at the bottom of the discharge pipe 4. A feed head 7 is located at the top of the liquid ammonia storage bottle 8. A third control valve 6 is located on the feed head 7. The filling nozzle 14 is inserted into the feed head 7. The upper end of the feed head 7 is provided with an external thread. The top end of the connector 11 is sleeved on the lower end of the discharge pipe 4. The connector 11 can slide along the length of the discharge pipe 4. The inner wall of the connector 11 is provided with an internal thread that matches the external thread. The feed head 7 can be connected to the feed head 7 via external and internal threads. The lower end of the discharge pipe 4 is provided with a limit block 12, which can limit the downward movement of the connector 11, thereby enabling the connector 11 to fasten the feed head 7 and the discharge pipe 4. The lifting device 9 is used to be set below the discharge pipe 4. The top of the lifting device 9 is used to place the liquid ammonia storage bottle 8 and can drive the liquid ammonia storage bottle 8 to rise or fall. The liquid ammonia storage bottle 8 is positioned on the lifting device 9, and the liquid ammonia storage bottle 8 is moved upward by the lifting device 9. Then the filling nozzle 14 enters the feed head 7, and the feed head 7 squeezes the discharge pipe 4 to form a seal. By screwing the connector 11 and the feed head 7 together, the stability of the connection is improved. By opening the first control valve 3, the second control valve 5, and the third control valve 6, liquid ammonia can be filled into the liquid ammonia storage bottle 8. The operation is convenient and fast, shortening the overall time of the filling process.

[0026] In a preferred embodiment, the liquid ammonia filling machine further includes a sealing gasket 13, which is fixedly connected to the lower end of the discharge pipe 4 at the position where it contacts the feed head 7. By setting the sealing gasket 13, the sealing effect of the sealing structure formed by the feed head 7 squeezing the discharge pipe 4 can be improved.

[0027] In a preferred embodiment, the lifting device 9 includes a base 15 and a lifting platform 16. The lifting platform 16 is slidably connected to the base 15 and can rise or fall in the height direction and maintain the moved position. The liquid ammonia storage bottle 8 is placed on the lifting platform 16. The installation and disassembly of the liquid ammonia storage bottle 8 and the filling device can be completed by raising or lowering the lifting platform 16.

[0028] In a preferred embodiment, the liquid ammonia filling machine also includes an electric hydraulic cylinder 18. The fixed end of the electric hydraulic cylinder 18 is fixedly connected to the base 15, and the movable end of the electric hydraulic cylinder 18 is fixedly connected to the lifting platform 16. The structure is simple and easy to use. The lifting of the lifting platform 16 is completed by controlling the extension and retraction of the electric hydraulic cylinder 18.

[0029] In a preferred embodiment, the liquid ammonia filling machine further includes a guide seat 19, which is vertically fixed to the top of the base 15 and slidably connected to the lifting platform 16 to improve the stability of the lifting platform 16 during its up-and-down movement.

[0030] In a preferred embodiment, the guide seat 19 has a cylindrical structure, and the lifting platform 16 is sleeved on the outside of the guide seat 19 to improve the stability of the lifting platform 16 during its up-and-down movement.

[0031] In a preferred embodiment, the liquid ammonia filling machine further includes a positioning seat 10 and a placement groove 17. The positioning seat 10 is fixedly disposed on the top of the lifting platform 16, and the placement groove 17 is disposed on the positioning seat 10. The placement groove 17 is used to fit the bottom of the liquid ammonia storage bottle 8 to fix the liquid ammonia storage bottle 8 placed in the placement groove 17. The structure is simple and the operation is convenient. Placing the liquid ammonia storage bottle 8 into the placement groove 17 can fix the liquid ammonia storage bottle 8 and align the feed head 7 with the discharge pipe 4 at the same time.

[0032] In a preferred embodiment, the limiting block 12 is an annular limiting block 12, and the inner wall of the annular limiting block 12 is fixedly connected to the outer wall of the discharge pipe 4. The connector 11 includes an integrally connected top wall and side wall. The top wall has an annular structure. The inner diameter of the top wall is smaller than the outer diameter of the limiting block 12 and larger than the outer diameter of the discharge pipe 4. The inner diameter of the side wall is larger than the outer diameter of the limiting block 12. The structure is simple and satisfies the requirement that while the connector 11 slides on the discharge pipe 4, the limiting block 12 can limit the connector 11.

[0033] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A liquid ammonia filling machine, characterized in that: include: A filling device, comprising a filling tank, a liquid ammonia conveying connection pipe, a first control valve, a discharge pipe, and a second control valve, wherein one end of the liquid ammonia conveying connection pipe is connected to and communicates with the top of the filling tank, the first control valve is disposed on the liquid ammonia conveying connection pipe, the discharge pipe is disposed at the bottom of the filling device, the second control valve is disposed on the discharge pipe, and a filling nozzle is disposed at the bottom of the discharge pipe; A liquid ammonia storage bottle, wherein a feed head is provided at the top of the liquid ammonia storage bottle, a third control valve is provided on the feed head, a filling nozzle is used to insert into the feed head, and an external thread is provided at the upper end of the feed head; A connector, the top end of which is fitted onto the lower end of the discharge pipe, is slidable along the length of the discharge pipe. The inner wall of the connector has an internal thread adapted to the external thread. The connector and the feed head are threadedly connected via the external and internal threads. A limit block is provided at the lower end of the discharge pipe, limiting the downward movement of the connector and thus ensuring that the connector secures the feed head to the discharge pipe. A lifting device is provided below the discharge pipe, and the top of the lifting device is used to place the liquid ammonia storage bottle and can drive the liquid ammonia storage bottle to rise or fall. The lifting device includes a base and a lifting platform, the lifting platform being slidably connected to the base and capable of rising or falling in the height direction and maintaining the moved position; It also includes an electric hydraulic cylinder, the fixed end of which is fixedly connected to the base, and the movable end of which is fixedly connected to the lifting platform; It also includes a guide seat, which is vertically fixed to the top of the base and slidably connected to the lifting platform; The guide seat has a cylindrical structure, and the lifting platform is sleeved on the outside of the guide seat; It also includes a positioning seat and a placement slot. The positioning seat is fixedly installed on the top of the lifting platform, and the placement slot is installed on the positioning seat. The placement slot is used to fit with the bottom of the liquid ammonia storage bottle to fix the liquid ammonia storage bottle placed in the placement slot. The limiting block is an annular limiting block, and the inner wall of the annular limiting block is fixedly connected to the outer wall of the discharge pipe. The connector includes an integrally connected top wall and side wall. The top wall has an annular structure. The inner diameter of the top wall is smaller than the outer diameter of the limiting block and larger than the outer diameter of the discharge pipe. The inner diameter of the side wall is larger than the outer diameter of the limiting block.

2. The liquid ammonia filling machine according to claim 1, characterized in that: It also includes a sealing gasket, which is fixedly connected to the lower end of the discharge pipe at the position where it contacts the feed head.

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