Tangential liquefied gas filling production line

Abstract

The utility model belongs to the technical field of liquefied gas packaging production, and provides a tangent line type liquefied gas filling production line which achieves mechanization and automation of liquefied gas filling operation, reduces potential safety hazards of operation and improves liquefied gas filling production efficiency. According to the technical scheme, a chain loop conveying mechanism is a rectangular annular circulating double-chain type conveying line used for conveying liquefied gas bottles, and corner guide mechanisms for preventing the liquefied gas bottles from falling off are installed at all corner positions of the conveying line of the chain loop conveying mechanism; a front weight detecting mechanism, a filling rotary table mechanism, a bottle opening sealing leakage detecting mechanism and a rear weight detecting mechanism are sequentially installed on the chain loop conveying mechanism in the conveying direction, and the filling rotary table mechanism is fixedly installed on one side of a line of the chain loop conveying mechanism. And a bottle pushing mechanism corresponding to an inlet of the filling rotary table mechanism and a bottle pulling mechanism corresponding to an outlet of the filling rotary table mechanism are arranged on the other side of the line of the chain loop conveying mechanism.

Description

Technical Field

[0001] The utility model discloses a tangent type liquefied gas filling production line, which belongs to the technical field of liquefied gas packaging production, and specifically relates to an automatic filling and packaging production line for liquefied gas. Background Art

[0002] In daily life, the most common way to use liquefied gas is as a cooking fuel in small street restaurants. You can also see liquefied gas bottles in night market stalls. In some areas, liquefied gas is still the common cooking fuel for families. In fact, liquefied gas is liquefied petroleum gas, which is produced when refining crude oil and evaporated during the extraction of oil or natural gas. Liquefied petroleum gas has the advantages of high calorific value, no smoke and no carbon slag, and is very convenient to operate. It has become a common fuel in many countries.

[0003] The essence of liquefied gas is a hydrocarbon mixture gas, so it is considered a clean energy. At room temperature, petroleum gas can be liquefied by simply pressurizing it and stored and transported in pressure cylinders.

[0004] Today's liquefied gas filling requires multiple processes to be operated in sequence, including empty tank weighing, liquefied gas filling, bottle mouth seal detection and full filling weighing, so as to achieve safe filling, liquefied gas net weight measurement and factory seal quality control. The whole process requires multiple workers to move and operate frequently, which wastes manpower and time, and there are certain safety hazards. The filling efficiency cannot be improved. Utility Model Content

[0005] In order to solve one of the above-mentioned technical defects, the utility model provides a tangential liquefied gas filling production line to achieve mechanization and automation of liquefied gas filling operations, reduce operational safety hazards, and improve liquefied gas filling production efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tangential liquefied gas filling production line, including a chain loop conveying mechanism, a corner guide mechanism, a front weight inspection mechanism, a bottle pushing mechanism, a filling turntable mechanism, a bottle pulling mechanism, a bottle mouth sealing leak detection mechanism and a rear weight inspection mechanism;

[0007] The chain loop conveying mechanism is a rectangular ring-shaped double-chain conveying line for conveying liquefied gas cylinders;

[0008] All corner positions of the conveying line of the chain loop conveying mechanism are equipped with corner guide mechanisms to prevent the liquefied gas cylinders from falling;

[0009] The chain loop conveying mechanism is provided with a front weight checking mechanism, a filling turntable mechanism, a bottle mouth sealing leakage checking mechanism and a rear weight checking mechanism in sequence along the conveying direction;

[0010] The filling turntable mechanism is fixedly installed on one side of the chain loop conveying mechanism, and the other side of the chain loop conveying mechanism is provided with a bottle pushing mechanism corresponding to the inlet of the filling turntable mechanism and a bottle pulling mechanism corresponding to the outlet of the filling turntable mechanism.

[0011] By adopting the tangent type liquefied gas filling production line provided by the utility model, the liquefied gas cylinders are continuously conveyed by the chain loop conveying mechanism, and the front weighing mechanism, the filling turntable mechanism, the bottle mouth sealing leak detection mechanism and the rear weighing mechanism on the chain loop conveying mechanism are sequentially used to carry out the entire process of empty tank weighing, liquefied gas filling, bottle mouth sealing detection and full filling weighing. There is no need for workers to frequently move and operate, thus saving manpower and time costs, reducing operational safety hazards and improving filling efficiency.

[0012] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the contents indicated in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the chain loop conveying mechanism in the utility model;

[0016] Figure 3 It is a side structural schematic diagram of the head-to-tail connection position of two conveying units in the utility model;

[0017] Figure 4 It is a schematic diagram of the top view of the end-to-end connection position of two conveying units in the utility model;

[0018] Figure 5 It is a partial structural schematic diagram of the transmission chain in the utility model;

[0019] Figure 6 It is a structural schematic diagram of the corner guide mechanism in the utility model;

[0020] Figure 7 This is a schematic diagram of the installation structure of the support guide assembly in the utility model;

[0021] Figure 8It is a schematic diagram of the installation structure of the front weight checking mechanism and the rear weight checking mechanism in the utility model;

[0022] Fig. 9 It is a three-dimensional structural schematic diagram of the weighing device of the front weighing mechanism and the rear weighing mechanism in the utility model;

[0023] Fig.10 It is a structural schematic diagram of the weighing device of the front weighing mechanism and the rear weighing mechanism in the utility model in a non-weighing state;

[0024] Fig.11 It is a structural schematic diagram of the weighing device of the front weighing mechanism and the rear weighing mechanism in the utility model under the weighing state;

[0025] Fig.12 It is a structural schematic diagram of the filling turntable mechanism in the utility model;

[0026] Fig.13 It is a structural schematic diagram of the filling unit in the utility model;

[0027] Fig.14 It is a three-dimensional structural schematic diagram of the magic wrench in the utility model;

[0028] Fig.15 This is a schematic diagram of the structure of the magic wrench in the utility model when viewed from above;

[0029] Fig.16 This is a structural schematic diagram of the bottle mouth sealing leak detection mechanism in the utility model;

[0030] Fig.17 It is a three-dimensional schematic diagram of the local structure of the bottle mouth sealing leakage detection mechanism located above the conveying line in the utility model;

[0031] Fig.18 It is a schematic diagram of the three-dimensional structure of the second lifting platform in the utility model;

[0032] Fig.19 It is a side structural schematic diagram of the second lifting platform in the utility model;

[0033] Fig. 20 It is a structural schematic diagram of a single-piece conveying and blocking bottle mechanism in the utility model;

[0034] Fig.21 It is a top view structural diagram of the single-piece conveying and blocking bottle mechanism in the utility model when placing the piece;

[0035] Fig. 22 It is a schematic diagram of the structure of the single-piece conveying and blocking mechanism of the utility model when the blocking member is performed from above;

[0036] Fig.23 This is a schematic diagram of the bottle pushing mechanism structure at the inlet of the filling turntable mechanism in the utility model;

[0037] Fig.24 It is a top view structural schematic diagram of the bottle pulling mechanism in the utility model;

[0038] Fig.25 It is a side view structural diagram of the bottle pulling mechanism in the utility model;

[0039] Fig.26 It is a top view of the installation structure of the bottle pushing mechanism and the roller group platform collecting frame in the utility model;

[0040] Fig. 27 It is a side view of the installation structure of the bottle pushing mechanism and the roller group platform collecting frame in the utility model. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0042] like Figure 1 As shown, the utility model is a tangential liquefied gas filling production line, comprising a chain loop conveying mechanism 1, a corner guide mechanism 2, a front weight checking mechanism 3, a bottle pushing mechanism 4, a filling turntable mechanism 5, a bottle pulling mechanism 6, a bottle mouth sealing leak detection mechanism 7 and a rear weight checking mechanism 8;

[0043] The chain loop conveying mechanism 1 is a rectangular loop-shaped double-chain conveying line for conveying liquefied gas cylinders;

[0044] All corner positions of the conveying line of the chain loop conveying mechanism 1 are equipped with a corner guide mechanism 2 to prevent the liquefied gas cylinder from falling;

[0045] The chain loop conveying mechanism 1 is provided with a front weight checking mechanism 3, a filling turntable mechanism 5, a bottle mouth sealing leakage checking mechanism 7 and a rear weight checking mechanism 8 in sequence along the conveying direction;

[0046] The filling turntable mechanism 5 is fixedly installed on one side of the chain loop conveying mechanism 1, and the other side of the chain loop conveying mechanism 1 is provided with a bottle pushing mechanism 4 corresponding to the inlet of the filling turntable mechanism 5 and a bottle pulling mechanism 6 corresponding to the outlet of the filling turntable mechanism 5.

[0047] An empty bottle loading area and a full bottle unloading area are arranged on the chain loop conveying mechanism 1, and both the empty bottle loading area and the full bottle unloading area are located on the conveying line between the front weighing mechanism 3 and the rear weighing mechanism 8, the empty bottle loading area is close to the front weighing mechanism 3, and the full bottle unloading area is close to the rear weighing mechanism 8;

[0048] In the empty bottle loading area, the empty liquefied gas cylinders are placed on the conveyor line one by one by a conveying mechanism or manually. The empty liquefied gas cylinders are first passed through the front weight inspection mechanism 3 for weight detection and registration, and then sent to the filling turntable mechanism 5. The bottle pushing mechanism 4 pushes the liquefied gas cylinders on the conveyor line to the filling turntable mechanism 5. The empty liquefied gas cylinders are filled with liquefied gas on the filling turntable mechanism 5. After the filling is completed, the full liquefied gas cylinders are pulled to the conveyor line by the bottle pulling mechanism 6, and continue to be sent to the bottle mouth sealing leakage detection mechanism 7 for bottle mouth sealing detection. After the detection is completed, they are sent to the rear weight inspection mechanism 8 by the conveyor line for weight detection and registration, and finally sent to the full bottle unloading area for unloading.

[0049] The following is a detailed description of the structure and working process of each process mechanism component in the utility model.

[0050] like Figure 2-4 As shown, the chain loop conveying mechanism 1 is composed of a plurality of conveying units connected end to end in sequence to form a rectangular ring-shaped circulating conveying line, and each conveying unit includes a power device 12, a driving wheel group 13, a driven wheel group 14, a double chain group 15, a chain groove 16 and a support frame 17;

[0051] The structure of the driving wheel group 13 is that a driving wheel is fixedly installed at both ends of the driving wheel shaft, the output shaft of the power device 12 is fixedly connected to the driving wheel shaft, and the power device 12 drives the driving wheel shaft to rotate slowly and uniformly; the power device 12 includes a variable speed motor and a reduction box, the output shaft of the variable speed motor is connected to the input shaft of the reduction box, and the output shaft of the reduction box is fixedly connected to the driving wheel shaft. When working, the power devices 2 of all conveying units drive all corresponding double chain groups 5 to run in one direction of the conveying line, so as to realize the circular operation and conveying of the entire ring conveying line;

[0052] The structure of the driven wheel set 14 is that a driven wheel is fixedly installed at each end of the driven wheel shaft;

[0053] The double chain set 15 includes two annular transmission chains 100 arranged in parallel, each transmission chain 100 is sleeved on the corresponding driving wheel and driven wheel, the upward chain and the downward chain of each transmission chain 100 are placed in the chain groove 16, and the top surface of the upward chain is higher than the top surface of the chain groove 16, and the chain groove 16 is fixed to the ground through a plurality of support frames 17, and the chain groove 16 where the upward chain is placed is provided with an elongated through hole for the top of the driving wheel and the driven wheel to penetrate and extend to the top of the chain groove 16;

[0054] The head-to-tail connection of the conveying units is achieved by arranging two upward chains at the head end of one conveying unit between two upward chains at the tail end of another conveying unit, and the upward chains of the two conveying units are located in the same plane;

[0055] A seat frame 11 fixed to the ground is provided at the head and tail connection positions of the two conveying units, the power device 12 is fixed on the seat frame 11, and the driving wheel shaft and the driven wheel shaft are both installed on the seat frame 11 through a bearing seat 19.

[0056] like Figure 5 As shown, the transmission chain is an annular chain formed by connecting a plurality of Y-shaped thick blocks end to end in sequence, one end of the Y-shaped thick block is a single-head head end and the other end is a double-head tail end, the single-head head end of the Y-shaped thick block is clamped in the gap of the double-head tail end of the previous Y-shaped thick block and is rotatably connected thereto through a rotating shaft, and a hole is reserved in the gap of the double-head tail end for the teeth of the driving wheel and the driven wheel to be inserted. The chain formed by the above structure has a flat top surface when placed in the chain groove, which is conducive to smoothly driving the liquefied gas cylinder for transportation.

[0057] Working principle of chain loop conveyor mechanism 1:

[0058] The variable speed motors of the power devices 12 of all conveying units are adjusted to the corresponding speed according to the system, so that they drive the driving wheel group 13 to rotate after being decelerated by the reduction box, and realize the same-direction and same-speed conveying operation of all double chain groups 15. The liquefied gas cylinders are placed vertically on the two upward chains of the double chain group 15, and the chains support the liquefied gas cylinders to move on the conveyor line, which can easily realize mechanical and automated transportation between multiple process points, save labor input costs, reduce the labor intensity of staff, thereby reducing production input costs, and improving work efficiency and work safety.

[0059] Since the conveyor line is a rectangular ring, the conveying speeds of the inner and outer chains at the corners are different, which can easily lead to bottle overturning. Therefore, a corner guide mechanism 2 is installed at all corners of the conveyor line to prevent the liquefied gas cylinder from falling.

[0060] like Figure 6 As shown, the corner guide mechanism 2 includes a single plate arc groove 21, an arc rod 22 and a vertical rod 23;

[0061] The chain groove 16 is taken as the inner side on the side with the smaller radius of the conveyor line (i.e., the side close to the center of the rectangular ring-shaped conveyor line). The single-plate arc groove 21 is an arc-shaped chain groove with side plates only arranged on the inner side, and no side plates are arranged on the outer side. On the one hand, the chain at the corner position is basically squeezed against the inner side plate, and on the other hand, the possibility of friction between the chain and the outer side plate is reduced. The side plate thickness of the single-plate arc groove 21 is designed to be greater than the side plate thickness of the chain groove 16. When conveying at the corner position, the chain is generally squeezed inward, so the side plate needs to be thickened to enhance its pressure-bearing performance. Two single-plate arc grooves 21 are arranged in parallel at the corner position of the conveyor line, and the two ends are fixedly connected to the corresponding chain grooves 16 respectively. The two transmission chains 100 are respectively placed in two single-plate arc grooves 21 to form two parallel arc angle chains. The single-plate arc grooves 21 are fixed to the ground through multiple support frames 17. An arc rod 22 is provided on the outer side and the inner side of the corner position of the conveyor line. The arc rod 22 is fixed on the support frame 17 through multiple vertical rods 23. When the liquefied gas cylinder enters the corner position, the arc rod 22 can effectively prevent the bottle from falling over, and keep the liquefied gas cylinder in an upright state during corner transportation. When the liquefied gas cylinder is vertically placed on the two upward chains of the double chain group 15, the height of the arc rod 22 corresponds to the middle of the bottle body of the liquefied gas cylinder, so that the liquefied gas cylinder can be more effectively clamped between the two arc rods 22.

[0062] In the present invention, in order to more clearly show the positional relationship of each component, the double chain set 15 is omitted in some figures. In fact, the two chains of the double chain set 15 are placed in the corresponding chain groove 16 and the single plate arc groove 21.

[0063] The inner bottom surface and inner side surface of the chain groove 16 and the single plate arc groove 21 are both installed with oil-containing nylon lining plates, so that the transmission chain has the advantages of anti-static and wear resistance when moving inside them, thereby improving its service life and safety.

[0064] like Figure 7 As shown, a support guide assembly 400 is provided at the connection portion between the single plate arc groove 21 and the chain groove 16 at the corner of the conveyor line;

[0065] The support guide assembly 400 includes a bottom connecting plate 401 and a trapezoidal frame 402. The bottom connecting plate 401 is fixed to the bottom surface of the connection portion between the single plate arc groove 21 and the chain groove 16. Two trapezoidal frames 402 are flatly fixedly installed on the bottom connecting plate 401, and the two trapezoidal frames 402 are located in the gap between the two single plate arc grooves 21 and the two chain grooves 16. The upper bottom edges of the two trapezoidal frames 402 are connected to each other. The bottom connecting plate 401 and the trapezoidal frame 402 effectively maintain the spacing between the two single plate arc grooves 21 and the two chain grooves 16, so as to prevent the single plate arc groove 21 and the two chain grooves 16 from being deformed due to stress, resulting in a change in the spacing and affecting the transmission.

[0066] like Figure 8-11As shown, the front weighing mechanism 3 includes a first base 31, a support rod 32, a first lifting platform 33, a first weighing platform 34 and a first lifting cylinder 35. Both sides of the first base 31 are fixed to the ground by first brackets 37, and the first base 31 is located between the upward chain and the downward chain. The first lifting platform 33 is installed above the first base 31 through a plurality of support rods 32. The corresponding support rods 32 on both sides of the conveyor line are fixedly connected by a transverse connecting plate to ensure their supporting stability. The plurality of support rods 32 are arranged in parallel, and both ends of the support rods 32 are hinged on the first base 31 and the first lifting platform 33, respectively. The cylinder body of the first lifting cylinder 35 is hinged at the center of the top surface of the first base 31, and the end of the piston rod of the first lifting cylinder 35 is hinged at the center of the bottom surface of the first lifting platform 33. The piston rod of the first lifting cylinder 35 is extended to apply an upward force to the first lifting platform 33. Under the action of the support rod 32, the first lifting platform 33 moves upward for a certain distance. The first scale platform 34 is fixedly installed on the top surface of the first lifting platform 33 and rises and falls with the first lifting platform 33. A weighing system is arranged inside the first scale platform 34. The weighing system is a prior art and is used to weigh the objects placed thereon. Its specific structure is not described in detail in this application.

[0067] The upper top surface of the first weighing platform 34 is provided with a first long groove 36 for accommodating the two chain grooves 16 where the upward chain is located. When the piston rod of the first lifting cylinder 35 extends to drive the first weighing platform 34 to rise so that the chain groove 16 is completely located inside the first long groove 36 (the lifting height is based on the chain groove 16 being completely located inside the first long groove 36 but not touching the bottom surface of the first long groove 36, so as to avoid the chain groove 16 applying downward pressure to the first weighing platform 34 and affecting the weighing accuracy), the top surface of the first weighing platform 34 is higher than the top surface of the upward chain inside the chain groove 16. At this time, the liquefied gas cylinder is not in contact with the transmission chain and is completely placed on the top surface of the first weighing platform 34, so that it can be weighed;

[0068] The first weighing platform 34 is equipped with a position monitor, which controls the extension and retraction of the first lifting cylinder 35. When the position monitor detects that a liquefied gas cylinder is in place, the piston rod of the first lifting cylinder 35 can be controlled to extend to a set length, thereby lifting the first weighing platform 34 to a set height.

[0069] A weight scanning and registration device is installed on the conveyor line at one end of the first scale 34, and the weight scanning and registration device includes a door-type rod frame 38 and a scanning device 310. The two bottom ends of the door-type rod frame 38 span across the two sides of the conveyor line and are fixed on the first bracket 37. The center of the top crossbar of the door-type rod frame 38 is fixedly installed with a scanning device 310. The scanning device 310 is located just above the central axis of the conveyor line. Before the liquefied gas cylinder is transported, a QR code will be pasted on the top of the bottle body. The scanning device 10 is used to identify the QR code passing below it and transmit it to the general system;

[0070] The structure of the rear weighing mechanism 8 is the same as that of the front weighing mechanism 3 .

[0071] The utility model installs a weight scanning and registration device on both the front weighing mechanism 3 and the rear weighing mechanism 8. The weighing device weighs the weight of the liquefied gas cylinder and feeds it back to the overall system. At the same time, the overall system receives the QR code information corresponding to the liquefied gas cylinder through the scanning device 310, and registers the weighed weight under the QR code. The total weight of the liquefied gas cylinder after filling minus the total weight of the liquefied gas cylinder before filling is the liquefied gas filling amount, which is registered under the QR code and the price calculation and registration are performed.

[0072] like Fig.12 As shown, the filling turntable mechanism 5 includes a turntable 51, a rotating power device, a center frame 52, an air source pipeline 53 and a filling unit 54;

[0073] The turntable 51 includes a fixed base and a rotating table. The fixed base is fixedly mounted on the ground on one side of the conveyor line. The rotating table is coaxially mounted on the fixed base. The rotating power device is mounted inside or on one side of the turntable 51 and drives the rotating table to achieve slow and uniform rotation. The conveyor line and the rotating table are arranged tangently and the inlet and outlet are set at the tangent point.

[0074] The middle section of the gas source pipeline 53 is buried underground, one end of the gas source pipeline 53 extends vertically from the center of the rotating table of the turntable 51 and the end is closed, the rotating table is rotatably connected to the gas source pipeline 53 through a rotating joint, and the other end of the gas source pipeline 53 is connected to the gas source tank buried underground, and a compressed air pump is installed on the gas source pipeline 53;

[0075] The center frame 52 is an annular frame fixed to the center of the upper surface of the rotating table, and a plurality of filling units 54 are fixedly installed on the outer edge of the top surface of the rotating table. A filling gun is hung on each filling unit 54, and the filling gun is connected to the inside of the air source pipeline 53 through an air pipe. The air pipe is installed on the center frame 52, and a solenoid valve is provided at the connection between the filling gun and the air pipe.

[0076] The utility model can control the rotating table to rotate slowly around its central axis through a rotating power device, so that each filling unit 54 on the outer edge of the top surface of the rotating table continuously passes through the inlet and outlet at the intersection of the conveying line and the rotating table, and takes out the empty liquefied gas cylinder on the conveying line at the inlet, and delivers the filled liquefied gas cylinder to the conveying line at the outlet; the compressed air pump on the gas source pipeline 3 is turned on to extract liquefied gas from the gas source tank stored underground in other places, and the filling gun then extracts liquefied gas from the gas source pipeline 3 through the gas pipe, and fills it into the liquefied gas cylinder on the corresponding filling unit 54, thereby realizing uninterrupted automatic taking, filling and automatic delivery of the filling system. In the utility model, a hanging device, such as a spring balancer, can be installed on the filling unit 54 to suspend the filling gun, so that it maintains a certain suspension height for easy access by the staff.

[0077] like Fig.13 As shown, the filling unit 54 includes a second base 541, a roller frame 542, a vertical frame 543, a top horizontal frame 544, a side clamping frame 545 and a magic wrench 546;

[0078] The second base 541 is fixedly mounted on the outer edge of the top surface of the rotating table of the turntable 51, and a vertical frame 543 is fixedly mounted on one side of the top surface of the second base 541 close to the center of the turntable 51, and a top cross frame 544 is fixedly connected to the top of the vertical frame 543, one end of the top cross frame 544 is connected to the top of the vertical frame 543 and the other end is a free end, and a magic wrench 546 for opening the valve of the liquefied gas cylinder is installed on the bottom surface of the free end of the top cross frame 544, and a control component for operating the up and down and rotating movements of the magic wrench 546 is fixedly mounted on the top cross frame 544, and the magic wrench 546 is located directly above the second base 541, and a second scale platform 547 is installed on the second base 541, and the roller The frame 542 is fixedly installed on the second weighing platform 547, and the weight display and weight reaching alarm corresponding to the second weighing platform 547 are installed on the vertical frame 543. The roller frame 542 is located directly below the magic wrench 546. The roller frame 542 is a roller plane composed of multiple rollers arranged in parallel. A side clamping frame 545 is fixedly installed in the middle of the vertical frame 543. The frame body of the side clamping frame 545 is fixed in the middle of the vertical frame 543, and an opening for clamping a liquefied gas cylinder is provided in the center of the side clamping frame 545 and the opening is located directly above the roller frame 542. When the liquefied gas cylinder is located on the roller frame 542 and fixed by the side clamping frame 545, the top bottle mouth of the liquefied gas cylinder is located directly below the magic wrench 546;

[0079] The side clamping frame 545 includes a U-shaped frame 5451 and a clamping wheel frame;

[0080] The middle of the sealing end of the U-shaped frame 5451 is fixed to the middle of the vertical frame 543, and a clamping wheel frame is installed at each end of the U-shaped frame 5451, and the two clamping wheel frames are symmetrically arranged;

[0081] The clamping wheel frame includes an obtuse-angle V-frame 5452, a clamping wheel 5453 and a clamping cylinder 5454. The middle part of the obtuse-angle V-frame 5452 is hinged at the end of the U-shaped frame 5451. One end of the obtuse-angle V-frame 5452 is rotatably mounted with multiple clamping wheels 5453. The axis of the clamping wheel 5453 is vertically arranged. The other end of the obtuse-angle V-frame 5452 is hinged to the end of the piston rod of the clamping cylinder 5454. The cylinder body of the clamping cylinder 5454 is hinged on the U-shaped frame 5451. The piston rod of the clamping cylinder 5454 extends and retracts to control the clamping wheel 5453 to move closer to or away from the opening center of the U-shaped frame 5451.

[0082] like Figure 14-15 As shown, the magic wrench 546 includes a rotating member 5461, a pressing cylinder 5462, a cover 5463 and a movable rod 5464;

[0083] The cylinder body of the downward pressure cylinder 5462 is installed on the top cross frame 544 through a rotating part 5461, and the piston rod of the downward pressure cylinder 5462 is vertically downward and a hollow cylindrical cover body 5463 with an open lower end is fixedly installed at the end. A partition is fixedly set in the middle of the inner cavity of the cover body 5463 and a plurality of through holes are provided on the partition, and a movable rod 5464 is slidably installed in each through hole, and a limit head is provided at the end of the movable rod 5464 above the partition, so that the movable rod 5464 can slide upward without descending to fall out of the partition.

[0084] The magic wrench 546 used in the utility model is mainly suitable for angle valve type liquefied gas cylinders (ie, the liquefied gas inlet pipe is arranged at a right angle to the valve).

[0085] The working process of the filling unit 54 is as follows:

[0086] When the empty liquefied gas cylinder is sent onto the roller frame 542 and placed in the center of the U-shaped frame 451 of the side clamping frame 545, the piston rod of the clamping cylinder 5454 extends out, and the clamping wheel 5453 is manipulated to approach the opening center of the U-shaped frame 5451 through the obtuse V-frame 5452 until it is close to the outer wall of the liquefied gas cylinder, and the clamping wheels 5453 on both sides clamp and fix the liquefied gas cylinder;

[0087] The staff connects the filling gun to the inlet pipe of the liquefied gas cylinder, and then extends the piston rod of the downward-pressing cylinder 5462 to make the cover body 5463 cover the plum blossom-shaped valve of the liquefied gas cylinder. Part of the movable rods 5464 are retracted upward under the upward action of the plum blossom-shaped valve, and the remaining movable rods 5464 surround the valve. The rotating part 5641 controls the rotation of the downward-pressing cylinder 5462 and the cover body 5463. The movable rods 5464 surrounding the valve act as a wrench at this time to open the valve and the filling gun is turned on. The solenoid valve is started and liquefied gas can be filled into the liquefied gas cylinder. During this period, the second scale 547 weighs the total weight of the liquefied gas cylinder, and then feeds back to the system and displays it on the weight display. When a certain amount of liquefied gas is filled and reaches the system set standard, the weight reaches the standard alarm and the solenoid valve of the filling gun is closed. The rotating part 5461 and the downward pressure cylinder 5462 of the magic wrench 546 are reset in turn, the valve of the liquefied gas cylinder is closed, and the staff removes the filling gun. At this point, one filling is completed.

[0088] The top surface of the cover 5463 is fixedly provided with an X-slide rail 5465, and a first slider 5466 is slidably mounted on the X-slide rail 5465, and a first return spring is installed between the two ends of the first slider 5466 and the corresponding ends of the X-slide rail 5465, and a Y-slide rail 5467 is fixedly provided on the top surface of the first slider 5466, and a second slider 5468 is slidably mounted on the Y-slide rail 5467, and a second return spring is installed between the two ends of the second slider 5468 and the corresponding ends of the Y-slide rail 5467. The combination of the above-mentioned slide rail and slider provides a fine-tuning space for the position of the liquefied gas cylinder valve in the cover 5463, and has a larger tolerance range for the position of the liquefied gas cylinder. When one filling is completed, the cover 5463 releases the valve, and the cover 5463 can return to the initial position under the action of the return spring.

[0089] like Figure 16-19 As shown, the bottle mouth sealing leak detection mechanism 7 includes a fixing frame 71, a second lifting platform 72, a limit plate 73, a pressing device 74, a sealing cover 75, an exhaust pipe 76 and a natural gas concentration detection meter 77;

[0090] The fixed frame 71 is a door-type frame structure, and the two side frames of the fixed frame 71 are respectively arranged on both sides of the conveyor line. A second lifting platform 72 is installed below the conveyor line between the two side frames of the fixed frame 71, and a limit plate 73 is installed on the side frame on one side of the second lifting platform 72. A clamping device 74 is installed on both side frames, and the clamping device 74 is located directly above the second lifting platform 72. The clamping device 74 includes a cylinder fixed on the side frame and an arc-shaped clamping ring fixed at the end of the cylinder piston rod. The height of the arc-shaped clamping ring corresponds to the middle of the liquefied gas cylinder and the arc surface of the arc-shaped clamping ring corresponds to the outer wall arc surface of the liquefied gas cylinder at this height position. A sealing cover 75 is installed on the top frame of the fixed frame 71 through a pushing cylinder. The sealing cover 75 is located directly above the second lifting platform 72, one end of the exhaust pipe 76 is connected to the inner cavity of the sealing cover 75, and the other end of the exhaust pipe 76 is connected to the inlet of the natural gas concentration detection meter 77, and an exhaust pump is installed on the exhaust pipe 76;

[0091] The second lifting platform 72 includes a third base 721, a spring seat 722, a lifting plate 723 and a second lifting cylinder 724;

[0092] The third base 721 is fixed on the fixing frame 71, and the third base 721 is located between the upward chain and the downward chain. A lifting plate 723 is installed above the third base 721 through a plurality of spring seats 722. The cylinder body of the second lifting cylinder 724 is hinged at the center of the top surface of the third base 721. The piston rod end of the second lifting cylinder 724 is hinged at the center of the bottom surface of the lifting plate 723. The upper top surface of the lifting plate 723 is provided with a second long groove 725 for accommodating the two chain grooves 16 where the upward chain is located. When the piston rod of the second lifting cylinder 724 extends to drive the lifting plate 723 to rise so that the chain groove 16 is completely located inside the second long groove 725, the top surface of the lifting plate 723 is higher than the top surface of the upward chain inside the chain groove 16.

[0093] The lifting plate 723 is provided with an in-position monitor, which controls the extension and retraction of the second lifting cylinder 724 .

[0094] The second lifting platform 72 is used to lift the liquefied gas cylinder that has reached the top thereof so that it does not continue to move forward along the conveyor line, but stays on the bottle mouth sealing leak detection mechanism to perform a sealing detection process.

[0095] Working process of bottle mouth sealing leak detection mechanism 7:

[0096] The in-situ monitor detects that the liquefied gas cylinder is in place, and the piston rod of the second lifting cylinder 724 extends to push the lifting plate 723 upward until the liquefied gas cylinder is detached from the upward chain. The cylinder piston rod of the clamping device 74 on the two side frames extends, so that the two arc-shaped clamps tightly embrace the body of the liquefied gas cylinder. At this time, the sealing cover is located directly above the liquefied gas cylinder, and the piston rod of the pushing cylinder extends downward until the sealing cover completely seals the upper bottle mouth of the liquefied gas cylinder. The vacuum pump is started, and the gas in the sealing cover 75 is pumped into the natural gas concentration detection meter 77 through the vacuum pipe 76 for detection. If the bottle mouth of the liquefied gas cylinder leaks, the gas extracted by the vacuum pipe 76 will enter the natural gas concentration detection meter 77 and be detected, which indicates that the part is unqualified. If the bottle mouth does not leak, no natural gas enters the natural gas concentration detection meter 77, and it cannot detect liquefied gas, which indicates that the part is qualified.

[0097] like Figure 1 As shown, the conveying lines on the entrance side of the front weighing mechanism 3, the filling turntable mechanism 5, the bottle mouth sealing and leak detection mechanism 7 and the rear weighing mechanism 8 are all equipped with a single-piece conveying and blocking bottle mechanism 9, which can make the liquefied gas cylinders queue up to enter the process, avoiding the confusion caused by too fast delivery on the subsequent conveying lines, affecting normal work;

[0098] like Figure 20-22 As shown, the single-piece conveying bottle blocking mechanism 9 includes a queuing barrier 91, a support 92 and a stopper, the queuing barrier 91 includes two cross bars 911 respectively arranged on the two outer sides of the conveying line, and the two cross bars 911 are respectively fixed to the support frame 17 through a plurality of vertical bars 912, and a support 92 is respectively fixedly installed on both sides of the conveying line at the exit of the queuing barrier 91, and a stopper is installed on each of the two supports 92, and the two stoppers are symmetrically arranged;

[0099] The stop device includes an L-arm 93, a stop wheel 94 and a stop cylinder 95. The angle portion of the L-arm 93 is hinged on a support 92. One end of the L-arm 93 is close to the center line of the conveyor line and a stop wheel 94 is rotatably mounted on the end portion. The other end of the L-arm 93 is away from the center line of the conveyor line and is hinged to the piston rod end of the stop cylinder 95. The cylinder body end of the stop cylinder 95 is hinged on the support 92. The stop cylinder 95 telescopes and controls the L-arm 93 to rotate in a plane to achieve the fit and separation of the wheel surface of the stop wheel 94 and the outer wall of the liquefied gas tank. The in-situ monitor installed on the current process of the conveyor line controls the telescoping of the stop cylinder 95.

[0100] When the liquefied gas cylinder passes normally, the single-piece conveying and blocking bottle mechanism 9 is as follows: Fig.21 As shown, the stop wheel 94 is away from the center line of the conveyor line, and the liquefied gas cylinder can pass smoothly. The in-place monitor on this process detects that the liquefied gas cylinder is being operated and feeds back the information to the main system. The main system commands the stop cylinder 95 to control the stop wheel 94 to approach the center line of the conveyor line through the L arm 93, as shown in FIG. Fig. 22As shown, if the distance between the two stop wheels 94 is less than that for a liquefied gas cylinder to pass through, the liquefied gas cylinder can be blocked, and the blocked multiple liquefied gas cylinders are between the two queuing barriers 91 to prevent the liquefied gas cylinders from falling over due to the squeezing of multiple bottles caused by the blocking of the bottles. According to actual needs, a position monitor can also be set on the support 92 to monitor the position of the liquefied gas cylinder. The position monitor cooperates with the position monitor on the process position. When no liquefied gas cylinder is operated in the process, only one liquefied gas cylinder is placed. When the position monitor on the support 92 detects that the second liquefied gas cylinder is about to pass, it will be blocked.

[0101] The bottle pushing mechanism 4 at the entrance of the filling turntable mechanism 5 is as follows Fig.23 As shown, the bottle pushing mechanism 4 includes a bottle pushing plate 42 and a bottle pushing cylinder 43. The bottle pushing cylinder 43 is fixedly installed on the side of the conveying line away from the turntable 51 through a frame, and the bottle pushing plate 42 is fixedly installed on the piston rod of the bottle pushing cylinder 43. The extending direction of the piston rod of the bottle pushing cylinder 43 points to the turntable 51 on the other side of the conveying line, and the bottle pushing plate 42 corresponds to the middle and lower part of the liquefied gas cylinder on the conveying line. The piston rod of the bottle pushing cylinder 43 extends and can push the corresponding liquefied gas cylinder on the conveying line to the filling unit 54 on the turntable 51 on the other side through the bottle pushing plate 42.

[0102] The two lateral ends of the bottle pushing plate 42 are bent toward the side close to the conveying line, so that the bottle pushing plate 42 embraces the liquefied gas cylinder for pushing, and has stronger stability. A plurality of rubber discs 44 are fixed on one side of the bent portion close to the conveying line to avoid damage to the outer wall of the liquefied gas cylinder during the pushing process.

[0103] The bottle pulling mechanism 6 at the outlet of the filling turntable mechanism 5 is as follows Figure 24-25 As shown, the bottle pulling mechanism 6 includes a fourth base 61, a bottle pulling cylinder 62 and a bottle pulling hook frame 63. The fourth base 61 is fixed on the ground on one side of the conveyor line, and the cylinder body of the bottle pulling cylinder 62 is fixedly installed on the fourth base 61. The piston rod of the bottle pulling cylinder 62 points to the other side of the conveyor line and the bottle pulling hook frame 63 is fixedly installed on the end thereof. The bottle pulling hook frame 63 is a horizontally placed C-shaped frame. When the piston rod of the bottle pulling cylinder 62 is extended, the bottle pulling hook frame 63 is located on the liquefied gas cylinder conveying path on the other side of the conveyor line, and the opening of the bottle pulling hook frame 63 faces the direction of the liquefied gas cylinder conveying path. When the filled liquefied gas cylinder reaches the inside of the bottle pulling hook frame 63, the piston rod of the bottle pulling cylinder 62 is retracted, and the liquefied gas cylinder can be hooked onto the conveyor line.

[0104] A rubber lining is attached to the inner side surface of one end of the bottle-pulling hook frame 63 away from the bottle-pulling cylinder 62 to prevent damage to the outer wall of the liquefied gas cylinder during the bottle-pulling process.

[0105] A roller frame 64 is installed on the conveyor line below the bottle pulling hook frame 63, and the roller frame includes a second bracket 641 and multiple roller shafts 642. The multiple roller shafts 642 are rotatably installed on the second bracket 641. The multiple roller shafts 642 are respectively arranged between the two upward chains and between the conveyor line and the liquefied gas cylinder conveying path. The second bracket is fixed on the fourth base 61. The roller frame 64 can effectively prevent the bottom of the liquefied gas cylinder from sinking into the gap of the conveyor line chain or the gap between the conveyor line and the liquefied gas cylinder conveying path on the turntable during the bottle hooking process. The top of the roller shaft 642 is 1-2 cm lower than the top surface of the upward chain to prevent it from affecting the chain's conveyance of the liquefied gas cylinder.

[0106] like Figure 1 As shown, the conveying lines at the outlet sides of the front weight inspection mechanism 3, the bottle mouth sealing and leak detection mechanism 7 and the rear weight inspection mechanism 8 are all equipped with bottle pushing mechanisms 4 for pushing unqualified products out of the conveying lines. The bottle pushing mechanisms 4 have the same structure as the bottle pushing mechanisms 4 at the inlet of the filling turntable mechanism 5, except that there is no filling unit 54 on the other side of the conveying line corresponding to the bottle pushing mechanisms 4. Therefore, a roller group platform collecting frame 41 is installed on the other side of the conveying line where the bottle pushing mechanisms 4 of the front weight inspection mechanism 3, the bottle mouth sealing and leak detection mechanism 7 and the rear weight inspection mechanism 8 are located, as shown in FIG. Figure 26-27 As shown, the structure of the roller group platform collection frame 41 is that multiple rollers are arranged in parallel on the frame to form a roller plane, which is located in the same plane as the upward chain and docked with the side of the adjacent upward chain. Guardrails 45 are provided on both sides of the frame and the end away from the conveyor line of the roller group platform collection frame 41. When unqualified liquefied gas cylinders reach the position corresponding to the bottle pushing plate 42, the in-place monitor installed on one side of the conveyor line and corresponding to the position of the bottle pushing plate 42 will provide information feedback, and the piston rod of the bottle pushing cylinder 43 will extend to control the bottle pushing plate 42 to push the liquefied gas cylinder on the conveyor line to the roller plane of the roller group platform collection frame 41 on the other side, while qualified liquefied gas cylinders will directly pass through and be transported to the next process. Guardrails can be provided on both sides of the roller group platform collection frame 41 and the rear end away from the conveyor line to prevent the liquefied gas cylinders from falling off.

[0107] A power box 46 is installed under the frame of the roller group platform collection frame 41, and multiple roller shafts are connected by a gear chain combination to achieve power connection. A reduction motor is installed in the power box 46, and the output shaft of the reduction motor is provided with a main gear. The main gear is connected to the gear chain combination and controls its rotation. An in-place monitor is installed at the end of the roller group platform collection frame 41 close to the conveyor line. The in-place monitor controls the start and stop of the reduction motor. When the in-place monitor detects that a liquefied gas cylinder is pushed onto the roller group platform collection frame 1, it can command the start of the reduction motor to actively move the liquefied gas cylinder that has arrived at the roller group platform collection frame 41 backward to vacate the front end position (the front end is the end close to the conveyor line).

[0108] In the actual operation of the utility model, it is necessary to coordinate with the deployment of the parts such as the in-situ monitor and the overall system. The parts such as the in-situ monitor and the overall system are specifically arranged according to the actual structure and situation, and will not be described in detail here.

[0109] When the above process structures are detailed and perfect, the empty liquefied gas cylinders are placed on the conveyor line one by one from the empty bottle loading area by the conveying mechanism or manually, and then go through the following processes:

[0110] 1. Under the action of the single-piece conveying and blocking bottle mechanism 9 at the inlet end of the front weighing mechanism 3, the liquefied gas cylinders are sorted individually and sent to the general system by scanning the QR code on the bottle body by the code scanning device 310 through the front weighing mechanism 3. The front weighing mechanism 3 performs weight detection and feeds back to the general system to be registered under the QR code. At the same time, the general system determines whether the weight of the empty bottle reaches the empty bottle weight standard set by the system. If it reaches the standard, it is directly sent to the next process by the conveyor line. If it does not reach the standard, when the liquefied gas cylinder reaches the bottle pushing mechanism 4 at the outlet end of the front weighing mechanism 3, it is screened and pushed to the corresponding roller group platform collection rack 41;

[0111] 2. Under the action of the single-piece conveying and blocking bottle mechanism 9 at the entrance of the filling turntable mechanism 5, the liquefied gas cylinders are sorted and pushed one by one by the bottle pushing mechanism 4 to the corresponding filling units 54 on the filling turntable mechanism 5 for filling. After the filling is completed, they arrive at the exit of the filling turntable mechanism 5 as the turntable rotates, and are pulled to the conveyor line by the bottle pulling mechanism 6 and then sent to the next process;

[0112] 3. Under the action of the single-piece conveying and blocking bottle mechanism 9 at the entrance of the bottle mouth sealing and leak detection mechanism 7, the liquefied gas cylinders are sorted individually and passed through the bottle mouth sealing and leak detection mechanism 7 for bottle mouth sealing detection to determine whether the bottle mouth sealing meets the standard. If it meets the standard, it is directly sent to the next process by the conveyor line. If it does not meet the standard, when the liquefied gas cylinder reaches the bottle pushing mechanism 4 at the outlet end of the bottle mouth sealing and leak detection mechanism 7, it is screened and pushed to the corresponding roller group platform collection rack 41;

[0113] 4. Under the action of the single-piece conveying and bottle intercepting mechanism 9 at the inlet end of the rear-weighing mechanism 8, the liquefied gas cylinders are sorted individually and passed through the rear-weighing mechanism 3. The scanning device 310 scans the QR code on the bottle body and transmits it to the general system. The rear-weighing mechanism 8 performs weight detection and feeds back to the general system to be registered under the QR code. At the same time, the general system determines whether the net weight of the liquefied gas meets the standard through two weight detections and registers it. If it meets the standard, it is directly sent to the full bottle unloading area by the conveyor line for unloading. If it does not meet the standard, when the liquefied gas cylinder reaches the bottle pushing mechanism 4 at the outlet end of the rear-weighing mechanism 8, it is screened and pushed to the corresponding roller group platform collection rack 41.

[0114] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0115] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0116] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0117] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0118] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A tangential liquefied gas filling production line, characterized in that: It comprises a chain loop conveying mechanism (1), a corner guide mechanism (2), a front weight checking mechanism (3), a bottle pushing mechanism (4), a filling turntable mechanism (5), a bottle pulling mechanism (6), a bottle mouth sealing leak detection mechanism (7) and a rear weight checking mechanism (8); The chain loop conveying mechanism (1) is a rectangular loop-shaped double-chain conveying line for conveying liquefied gas cylinders; All corner positions of the conveying line of the chain loop conveying mechanism (1) are equipped with corner guide mechanisms (2) for preventing the liquefied gas cylinders from falling; The chain loop conveying mechanism (1) is provided with a front weight checking mechanism (3), a filling turntable mechanism (5), a bottle mouth sealing leak detection mechanism (7) and a rear weight checking mechanism (8) in sequence along the conveying direction; The filling turntable mechanism (5) is fixedly mounted on one side of the line of the chain loop conveying mechanism (1), and a bottle pushing mechanism (4) corresponding to the inlet of the filling turntable mechanism (5) and a bottle pulling mechanism (6) corresponding to the outlet of the filling turntable mechanism (5) are provided on the other side of the line of the chain loop conveying mechanism (1).

2. The tangential liquefied gas filling production line according to claim 1 is characterized in that: The chain loop conveying mechanism (1) is composed of a plurality of conveying units connected end to end in sequence to form a rectangular ring-shaped circulating conveying line, each conveying unit comprising a power device (12), a driving wheel group (13), a driven wheel group (14), a double chain group (15), a chain groove (16) and a support frame (17); The structure of the driving wheel group (13) is that a driving wheel is fixedly installed at each end of the driving wheel shaft, the output shaft of the power device (12) is fixedly connected to the driving wheel shaft, and the power device (12) drives the driving wheel shaft to rotate slowly and at a uniform speed; The structure of the driven wheel assembly (14) is that a driven wheel is fixedly mounted on each of the two ends of the driven wheel shaft; The double chain set (15) comprises two annular transmission chains (100) arranged in parallel, each transmission chain (100) is sleeved on a corresponding driving wheel and a driven wheel, the upward chain and the downward chain of each transmission chain (100) are placed in a chain groove (16), and the top surface of the upward chain is higher than the top surface of the chain groove (16), the chain groove (16) is fixed to the ground through a plurality of support frames (17), and the chain groove (16) where the upward chain is placed is provided with an elongated through hole for the top of the driving wheel and the driven wheel to penetrate and extend to the top of the chain groove (16); The head-to-tail connection of the conveying units is achieved by arranging two upward chains at the head end of one conveying unit between two upward chains at the tail end of another conveying unit, and the upward chains of the two conveying units are located in the same plane; A seat frame (11) fixed to the ground is provided at the head and tail connection positions of the two conveying units, the power device (12) is fixed on the seat frame (11), and the driving wheel shaft and the driven wheel shaft are both mounted on the seat frame (11) via a bearing seat (19).

3. The tangential liquefied gas filling production line according to claim 2 is characterized in that: The corner guide mechanism (2) comprises a single plate arc groove (21), an arc rod (22) and a vertical rod (23); The chain groove (16) on one side of the conveyor line with a smaller radius is taken as the inner side, the single-plate arc groove (21) is an arc-shaped chain groove with a side plate only arranged on the inner side, two single-plate arc grooves (21) are arranged in parallel at the corner position of the conveyor line and both ends are fixedly connected to the corresponding chain grooves (16), two transmission chains (100) are respectively placed in the two single-plate arc grooves (21) to form two parallel arc angle chains, the single-plate arc groove (21) is fixed to the ground via a plurality of support frames (17), an arc rod (22) is arranged on the outer side and the inner side of the corner position of the conveyor line, and the arc rod (22) is fixed to the support frame (17) via a plurality of vertical rods (23).

4. The tangential liquefied gas filling production line according to claim 3 is characterized in that: The front weighing mechanism (3) comprises a first base (31), a support rod (32), a first lifting platform (33), a first weighing platform (34) and a first lifting cylinder (35); both sides of the first base (31) are fixed to the ground via first brackets (37); the first base (31) is located between an upward chain and a downward chain; the first lifting platform (33) is installed above the first base (31) via a plurality of support rods (32); the plurality of support rods (32) are arranged in parallel, and the two ends of the support rods (32) are respectively hinged on the first base (31) and the first lifting platform (33); the cylinder body of the first lifting cylinder (35) is hinged on the first base The piston rod end of the first lifting cylinder (35) is hinged at the center of the bottom surface of the first lifting platform (33), and the first weighing platform (34) is fixedly installed on the top surface of the first lifting platform (33). A weighing system is arranged inside the first weighing platform (34), and the upper top surface of the first weighing platform (34) is provided with a first long groove (36) for accommodating two chain grooves (16) where the upward chain is located. When the piston rod of the first lifting cylinder (35) extends to drive the first weighing platform (34) to rise so that the chain groove (16) is completely located inside the first long groove (36), the top surface of the first weighing platform (34) is higher than the top surface of the upward chain inside the chain groove (16); The first weighing platform (34) is provided with an in-position monitor, and the in-position monitor controls the extension and retraction of the first lifting cylinder (35); A weight-counting and code scanning registration device is installed on the conveyor line at one end of the first weighing platform (34), and the weight-counting and code scanning registration device comprises a door-shaped rod frame (38) and a code scanning device (310). The two bottom ends of the door-shaped rod frame (38) span across the two sides of the conveyor line and are fixed on the first bracket (37). The center of the top crossbar of the door-shaped rod frame (38) is fixedly installed with the code scanning device (310). The code scanning device (310) is located directly above the central axis of the conveyor line. The rear weight checking mechanism (8) has the same structure as the front weight checking mechanism (3).

5. The tangential liquefied gas filling production line according to claim 4 is characterized in that: The filling turntable mechanism (5) comprises a turntable (51), a rotation power device, a center frame (52), an air source pipeline (53) and a filling unit (54); The turntable (51) comprises a fixed base and a rotating table, the fixed base is fixedly mounted on the ground at one side of the conveyor line, the rotating table is coaxially mounted on the fixed base, a rotating power device is mounted inside or on one side of the turntable (51) and drives the rotating table to achieve slow and uniform rotation, the conveyor line and the rotating table are arranged tangently, and an inlet and an outlet are arranged at the tangent point; The middle section of the gas source pipeline (53) is buried underground, one end of the gas source pipeline (53) extends vertically from the center of the rotating table surface of the turntable (51) and the end is closed, the other end of the gas source pipeline (53) is connected to the gas source tank buried underground, and a compressed air pump is installed on the gas source pipeline (53); The central frame (52) is an annular frame fixed to the center of the upper surface of the rotating table, and a plurality of filling units (54) are fixedly installed on the outer edge of the top surface of the rotating table. A filling gun is hung on each filling unit (54), and the filling gun is connected to the inside of the gas source pipeline (53) through an air supply pipe. The air supply pipe is installed on the central frame (52), and a solenoid valve is provided at the connection between the filling gun and the air supply pipe. The filling unit (54) comprises a second base (541), a roller frame (542), a vertical frame (543), a top horizontal frame (544), a side clamping frame (545) and a magic wrench (546); The second base (541) is fixedly mounted on the outer edge of the top surface of the rotating table of the turntable (51); a vertical frame (543) is fixedly mounted on one side of the top surface of the second base (541) close to the center of the turntable (51); a top horizontal frame (544) is fixedly connected to the top of the vertical frame (543); one end of the top horizontal frame (544) is connected to the top of the vertical frame (543) and the other end is a free end; a magic wrench (546) for opening the valve of the liquefied gas cylinder is mounted on the bottom surface of the free end of the top horizontal frame (544); a control component for operating the up and down and rotating movements of the magic wrench (546) is fixedly mounted on the top horizontal frame (544); the magic wrench (546) is located directly above the second base (541); a second weighing platform (547) is mounted on the second base (541); The roller frame (542) is fixedly mounted on the second weighing platform (547); a weight display and a weight reaching alarm corresponding to the second weighing platform (547) are mounted on the vertical frame (543); the roller frame (542) is located directly below the magic wrench (546); the roller frame (542) is a roller plane formed by a plurality of rollers arranged in parallel; a side clamping frame (545) is fixedly mounted in the middle of the vertical frame (543); a frame body of the side clamping frame (545) is fixed in the middle of the vertical frame (543); an opening for clamping a liquefied gas cylinder is provided in the center of the side clamping frame (545); and the opening is located directly above the roller frame (542); when the liquefied gas cylinder is located on the roller frame (542) and fixed by the side clamping frame (545), the top end of the bottle mouth is located directly below the magic wrench (546); The side-holding clamping frame (545) comprises a U-shaped frame (5451) and a holding wheel frame; The middle part of the sealing end of the U-shaped frame (5451) is fixed to the middle part of the vertical frame (543), and a clamping wheel frame is respectively installed at the two ends of the U-shaped frame (5451), and the two clamping wheel frames are symmetrically arranged; The clamping wheel frame comprises an obtuse-angle V-frame (5452), a clamping wheel (5453) and a clamping cylinder (5454); the middle part of the obtuse-angle V-frame (5452) is hinged to the end of the U-shaped frame (5451); one end of the obtuse-angle V-frame (5452) is rotatably mounted with a plurality of clamping wheels (5453); the axis of the clamping wheel (5453) is vertically arranged; the other end of the obtuse-angle V-frame (5452) is hinged to the end of the piston rod of the clamping cylinder (5454); the cylinder body of the clamping cylinder (5454) is hinged to the U-shaped frame (5451); the piston rod of the clamping cylinder (5454) is extended or retracted to control the clamping wheel (5453) to move closer to or farther from the opening center of the U-shaped frame (5451); The magic wrench (546) comprises a rotating part (5461), a downward pressure cylinder (5462), a cover body (5463) and a movable rod (5464); The cylinder body of the downward pressure cylinder (5462) is installed on the top cross frame (544) through a rotating member (5461), the piston rod of the downward pressure cylinder (5462) is vertically downward and a hollow cylindrical cover body (5463) with an open lower end is fixedly installed at the end, a partition is fixedly arranged in the middle of the inner cavity of the cover body (5463) and a plurality of through holes are arranged on the partition, a movable rod (5464) is slidably installed in each through hole, and a limit head is arranged at the end of the movable rod (5464) located above the partition; An X-slide rail (5465) is fixedly arranged on the top surface of the cover body (5463), and a first slider (5466) is slidably mounted on the X-slide rail (5465), and a first return spring is installed between the two ends of the first slider (5466) and the corresponding ends of the X-slide rail (5465), and a Y-slide rail (5467) is fixedly arranged on the top surface of the first slider (5466), and a second slider (5468) is slidably mounted on the Y-slide rail (5467), and a second return spring is installed between the two ends of the second slider (5468) and the corresponding ends of the Y-slide rail (5467).

6. The tangential liquefied gas filling production line according to claim 5 is characterized in that: The bottle mouth sealing leak detection mechanism (7) comprises a fixing frame (71), a second lifting platform (72), a limit plate (73), a pressing device (74), a sealing cover (75), an exhaust pipe (76) and a natural gas concentration detection meter (77); The fixed frame (71) is a door-type frame structure. The two side frames of the fixed frame (71) are respectively arranged on both sides of the conveyor line. A second lifting platform (72) is installed below the conveyor line between the two side frames of the fixed frame (71). A limit plate (73) is installed on the side frame on one side of the second lifting platform (72). A clamping device (74) is installed on both side frames. The clamping device (74) is located directly above the second lifting platform (72). The clamping device (74) includes a cylinder fixed on the side frame and an arc fixed at the end of the cylinder piston rod. A curved snap ring, the height of the curved snap ring corresponds to the middle of the liquefied gas cylinder and the curved surface of the curved snap ring corresponds to the curved surface of the outer wall of the liquefied gas cylinder at the height position, a sealing cover (75) is installed on the top frame of the fixing frame (71) through a pushing cylinder, and the sealing cover (75) is located directly above the second lifting platform (72), one end of the exhaust pipe (76) is connected to the inner cavity of the sealing cover (75), and the other end of the exhaust pipe (76) is connected to the inlet of the natural gas concentration detection meter (77), and an exhaust pump is installed on the exhaust pipe (76); The second lifting platform (72) comprises a third base (721), a spring seat (722), a lifting plate (723) and a second lifting cylinder (724); The third base (721) is fixed on the fixing frame (71), and the third base (721) is located between the upward chain and the downward chain. A lifting plate (723) is installed above the third base (721) via a plurality of spring seats (722). The cylinder body of the second lifting cylinder (724) is hinged at the center of the top surface of the third base (721). The end of the piston rod of the second lifting cylinder (724) is hinged at the center of the bottom surface of the lifting plate (723). The upper top surface of the lifting plate (723) is provided with a second long groove (725) for accommodating two chain grooves (16) where the upward chain is located. When the piston rod of the second lifting cylinder (724) extends to drive the lifting plate (723) to rise so that the chain groove (16) is completely located inside the second long groove (725), the top surface of the lifting plate (723) is higher than the top surface of the upward chain inside the chain groove (16). The lifting plate (723) is provided with an in-position monitor, and the in-position monitor controls the extension and retraction of the second lifting cylinder (724).

7. The tangential liquefied gas filling production line according to claim 6 is characterized in that: A single-piece conveying bottle blocking mechanism (9) is installed on the conveying line on the inlet side of the front weighing mechanism (3), the filling turntable mechanism (5), the bottle mouth sealing leak detection mechanism (7) and the rear weighing mechanism (8); The single-piece conveying bottle blocking mechanism (9) comprises a queuing barrier (91), a support (92) and a stop device, wherein the queuing barrier (91) comprises two cross bars (911) respectively arranged on the outer sides of the conveying line, and the two cross bars (911) are respectively fixed to the support frame (17) through a plurality of vertical bars (912), and a support (92) is respectively fixedly installed on both sides of the conveying line at the exit of the queuing barrier (91), and a stop device is installed on each of the two supports (92), and the two stop devices are symmetrically arranged; The stop device comprises an L-arm (93), a stop wheel (94) and a stop cylinder (95); the angled portion of the L-arm (93) is hinged on a support (92); one end of the L-arm (93) is close to the center line of the conveyor line and the stop wheel (94) is rotatably mounted on the end; the other end of the L-arm (93) is away from the center line of the conveyor line and is hinged to the end of the piston rod of the stop cylinder (95); the cylinder body end of the stop cylinder (95) is hinged on the support (92); the stop cylinder (95) controls the L-arm (93) to rotate in a plane to achieve the contact and separation of the wheel surface of the stop wheel (94) with the outer wall of the liquefied gas tank; and the in-situ monitor installed on the current process of the conveyor line controls the extension and retraction of the stop cylinder (95).

8. The tangential liquefied gas filling production line according to claim 7 is characterized in that: The bottle pushing mechanism (4) comprises a bottle pushing plate (42) and a bottle pushing cylinder (43); the bottle pushing cylinder (43) is fixedly mounted on a side of the conveyor line away from the turntable (51) through a frame; the bottle pushing plate (42) is fixedly mounted on the piston rod of the bottle pushing cylinder (43); the piston rod of the bottle pushing cylinder (43) extends in a direction pointing to the turntable (51) on the other side of the conveyor line, and the bottle pushing plate (42) corresponds to the middle and lower part of the liquefied gas cylinder on the conveyor line; Both transverse ends of the bottle pushing plate (42) are bent toward a side close to the conveyor line, and a plurality of rubber discs (44) are fixed to a side of the bent portion close to the conveyor line.

9. The tangential liquefied gas filling production line according to claim 8 is characterized in that: The bottle pulling mechanism (6) comprises a fourth base (61), a bottle pulling cylinder (62) and a bottle pulling hook frame (63); the fourth base (61) is fixed on the ground at one side of the conveyor line; the cylinder body of the bottle pulling cylinder (62) is fixedly mounted on the fourth base (61); the piston rod of the bottle pulling cylinder (62) points to the other side of the conveyor line and the bottle pulling hook frame (63) is fixedly mounted on the end thereof; the bottle pulling hook frame (63) is a horizontally placed C-shaped frame; when the piston rod of the bottle pulling cylinder (62) is extended, the bottle pulling hook frame (63) is located on the liquefied gas cylinder conveying path at the other side of the conveyor line, and the opening of the bottle pulling hook frame (63) faces the direction of the liquefied gas cylinder conveying path; A roller frame (64) is installed on the conveying line below the bottle pulling hook frame (63), and the roller frame comprises a second bracket (641) and a plurality of roller shafts (642). The plurality of roller shafts (642) are rotatably mounted on the second bracket (641), and the plurality of roller shafts (642) are respectively arranged between two upward chains and between the conveying line and the conveying path of the liquefied gas cylinder. The second bracket is fixed on the fourth base (61), and the top end of the roller shaft (642) is 1-2 cm lower than the top surface of the upward chain.

10. The tangential liquefied gas filling production line according to claim 9, characterized in that: A bottle pushing mechanism (4) is installed on the conveying line at the outlet side of the front weighing mechanism (3), the bottle mouth sealing leak detection mechanism (7) and the rear weighing mechanism (8); a roller group platform collecting frame (41) is installed on the other side of the conveying line where the bottle pushing mechanism (4) of the front weighing mechanism (3), the bottle mouth sealing leak detection mechanism (7) and the rear weighing mechanism (8) is located; the structure of the roller group platform collecting frame (41) is that a plurality of roller axes are arranged in parallel on a frame body to form a roller plane, the roller plane and the upward chain are located in the same plane and are butted against the adjacent side of the upward chain; guardrails (45) are provided on both sides of the frame body and the end away from the conveying line of the roller group platform collecting frame (41).

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