A kind of automatic closing traction mechanism for packing bag of waterless ice environmental protection toilet

Abstract

The utility model provides a kind of automatic closing traction mechanism of packing bag for waterless frozen environment-friendly closestool, including frame body, two traction components and the closing drive component of driving two traction components to approach each other or away from each other. Traction component includes screw rod sliding block and traction roller. Traction roller outer wall is provided with exhaust groove, exhaust groove extends along the circumference of traction roller, and the port of at least one exhaust groove is contacted with packing bag during the process that two traction rollers exert thrust on packing bag. The utility model provides a kind of beneficial effect: closing drive component drives two traction components to approach each other, to close packing bag. Downwards pulling force is exerted on packing bag by the rotation of two traction rollers driven by traction motor, to realize the automatic traction of packing bag, improve the replacement efficiency of packing bag. By being provided with multiple exhaust grooves on the outer wall of traction roller, air in packing bag can be discharged through the gap between packing bag located at exhaust groove, to reduce the volume of excrement after packing, save space.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to an automatic closing and traction mechanism for a waterless frozen environmentally friendly toilet packaging bag. Background Technology

[0002] Currently, waterless toilets typically use a plastic bag placed over the toilet bowl opening, ensuring the bag fits snugly against the toilet bowl's inner surface. After use, waste falls into the pre-lined bag. After each use, the bag is manually removed and a new bag is placed over the toilet bowl opening. Therefore, each use requires manual bag removal and refilling, and the plastic bag must be kept as close to the toilet bowl's inner surface as possible. This process is cumbersome and inefficient. Utility Model Content

[0003] This utility model provides an automatic closing and pulling mechanism for packaging bags used in waterless freezing and environmentally friendly toilets, which solves the problem of low packaging bag replacement efficiency in the prior art.

[0004] This utility model provides an automatic closing and pulling mechanism for a waterless frozen eco-friendly toilet bag, including a frame, two pulling components, and a closing drive component that drives the two pulling components to move closer or further apart. Each pulling component includes a lead screw slider and a pulling roller, with the pulling roller rotatably connected to the lead screw slider. The pulling roller is located on the opposite side of the lead screw slider, and a traction motor that drives the pulling roller to rotate is connected to the lead screw slider. An exhaust groove is provided on the outer wall of the pulling roller, and the exhaust groove extends circumferentially along the pulling roller. During the process of the two pulling rollers applying a pushing force to the bag, at least one port of the exhaust groove comes into contact with the bag.

[0005] Furthermore, the traction roller includes a roller body and a plurality of transmission teeth fixedly connected to the outer wall of the roller body. The roller body is rotatably connected to the lead screw slider. The transmission teeth are evenly distributed along the circumference of the roller body. The exhaust groove is located at the end of the transmission teeth away from the roller body. The two traction rollers are driven by meshing through the transmission teeth.

[0006] Furthermore, the closing drive assembly includes a bidirectional lead screw and a closing motor that drives the bidirectional lead screw to rotate. The bidirectional lead screw is rotatably connected to the frame. One lead screw slider is threadedly connected to one end of the bidirectional lead screw, and the other lead screw slider is threadedly connected to the other end of the bidirectional lead screw.

[0007] Furthermore, two bidirectional lead screws are provided, and the two bidirectional lead screws are respectively threaded to both sides of the lead screw slider. The ends of the two bidirectional lead screws are respectively fixedly connected to synchronous pulleys, and a synchronous transmission belt is sleeved between the two synchronous pulleys. The closing motor drives either of the bidirectional lead screws to rotate.

[0008] Furthermore, a tensioning assembly for adjusting the tension of the synchronous transmission belt is connected to the frame. The tensioning assembly includes a tensioning frame and a tensioning wheel. The tensioning wheel is rotatably connected to the tensioning frame, the tensioning frame is movably connected to the frame, and the outer wall of the tensioning wheel is in contact with the synchronous transmission belt.

[0009] Furthermore, the tensioning frame is provided with a first adjustment groove, and a first clamping bolt is inserted into the first adjustment groove. The end of the first clamping bolt passes through the first adjustment groove and is threadedly connected to the frame body. The tensioning frame slides along the first adjustment groove to make the tensioning wheel approach or move away from the synchronous transmission belt. The head of the first clamping bolt contacts the end face of the tensioning frame to press the tensioning frame onto the frame body.

[0010] Furthermore, a rotating shaft is connected to the end of the tensioning frame away from the tensioning wheel. The tensioning frame is rotatably connected to the frame body through the rotating shaft. A second adjusting groove is provided on the tensioning frame between the rotating shaft and the tensioning wheel. A second clamping bolt is inserted into the second adjusting groove. The end of the second clamping bolt passes through the second adjusting groove and is threadedly connected to the frame body. The head of the second clamping bolt contacts the end face of the tensioning frame to press the tensioning frame onto the frame body.

[0011] Furthermore, it also includes a controller, a first proximity switch and a second proximity switch, wherein the first proximity switch, the second proximity switch, the closing motor and the traction motor are respectively communicatively connected to the controller; The first proximity switch is fixedly connected to either of the lead screw and slider, and is used to detect the relative position between the two lead screws and sliders; The second proximity switch is fixedly connected to the frame or any of the lead screw sliders, and is used to detect the relative position between the lead screw slider and the frame.

[0012] The beneficial effects of this invention are as follows: When pulling the bag closed, the closing drive assembly drives two traction components to move closer together, and the traction roller closes the bag located between the two traction components. The traction motor drives the two traction rollers to rotate, applying a downward pulling force to the bag, thereby achieving automatic traction and improving the bag replacement efficiency. By opening multiple venting grooves on the outer wall of the traction rollers, air inside the bag can be discharged through the gaps between the bags after the traction rollers have closed, thus reducing the volume of the packaged excrement and saving space. Multiple transmission teeth are fixedly connected circumferentially to the outer wall of the traction rollers. Through the meshing of these teeth, the two traction rollers are linked, and the meshing of the transmission teeth clamps the bag, preventing slippage between the bag and the traction rollers, thereby improving the stability of the strapping pull. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is an exploded view of the tensioning assembly and synchronous transmission belt according to an embodiment of this utility model.

[0015] Figure 3 This is a structural schematic diagram of a tensioning component according to another embodiment of the present invention.

[0016] Figure 4 This is a utility model Figure 1 Enlarged diagram of point A in the middle.

[0017] Figure 5 This is a schematic diagram of the structure of the roller body and transmission teeth in an embodiment of this utility model.

[0018] Figure 6 This is a schematic diagram of the structure of the exhaust groove of this utility model when it is set as a ring.

[0019] Figure 7 This is a schematic diagram of the structure of the exhaust groove of this utility model when it is set in a spiral shape.

[0020] Figure 8 This is a schematic diagram showing the connection relationship between this utility model, the toilet liner, and the sealing mechanism.

[0021] Figure label: 1. Toilet liner; 11. Collection trough; 2. Sealing mechanism; 3. Frame; 4. Traction assembly; 41. Lead screw slider; 42. Traction roller; 421. Exhaust trough; 422. Roller body; 423. Transmission gear; 43. Traction motor; 5. Closing drive assembly; 51. Bidirectional lead screw; 52. Closing motor; 53. Synchronous pulley; 54. Synchronous transmission belt; 6. Tensioning assembly; 61. Tensioning frame; 62. Tensioning wheel; 63. First adjustment groove; 64. First clamping bolt; 65. Rotating shaft; 66. Second adjustment groove; 67. Second clamping bolt; 7. First proximity switch; 71. First sensing plate; 8. Second proximity switch; 81. Second sensing plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] This utility model discloses an automatic closing and pulling mechanism for packaging bags used in waterless freezing and environmentally friendly toilets, such as... Figure 8 As shown, it is installed between the toilet liner and the sealing mechanism. The cylindrical bag passes sequentially through the toilet liner, the automatic closing and pulling mechanism, and the sealing mechanism. The end of the bag extending out of the toilet liner is folded and turned over into a collection groove located on the outer wall of the toilet liner. The closing and pulling mechanism is used to close the bag extending from the bottom of the toilet liner and pull it towards the sealing mechanism.

[0026] The following is combined with Figures 1-8 This invention describes an automatic closing and pulling mechanism for a waterless, environmentally friendly toilet bag, such as... Figure 1 , Figure 5 As shown, the assembly includes a frame 3, two traction components 4, and a closing drive component 5 that drives the two traction components 4 to move closer or further apart. Each traction component 4 includes a lead screw slider 41 and a traction roller 42. The traction roller 42 is rotatably connected to the lead screw slider 41 and is located on the opposite side of the lead screw slider 41. A traction motor 43, which drives the traction roller 42 to rotate, is connected to the lead screw slider 41. An exhaust groove 421 is provided on the outer wall of the traction roller 42, extending circumferentially along the traction roller 42. During the process of the two traction rollers 42 applying a pushing force to the packing bag, at least one port of the exhaust groove 421 contacts the packing bag.

[0027] Specifically, in one alternative embodiment, such as Figure 6As shown, the traction roller 42 is cylindrical, and two traction motors 43 are provided, each driving one traction roller 42 to rotate. Exhaust grooves 421 extend circumferentially along the traction roller 42 to form a ring, and multiple exhaust grooves 421 are provided along the axial direction of the traction roller 42. In another optional embodiment, as... Figure 7 As shown, the exhaust groove 421 extends circumferentially along the traction roller 42 to form a spiral groove structure.

[0028] When the bag is pulled, it passes between the two traction rollers 42. The closing drive assembly 5 drives the two traction assemblies 42 to move closer together, thereby closing the bag. After the two traction rollers 42 clamp the bag, the two traction motors 43 synchronously drive the two traction rollers 42 to rotate. The linear velocity of the two traction rollers 42 at the contact point with the bag is downward, thus pulling the bag downward. During the clamping process, the traction rollers 42 maintain contact between the port of the vent groove 421 and the outer wall of the bag, so that the two side walls of the bag located at the vent groove 421 are not completely clamped and pressed together. When the bag located below the traction rollers 42 is squeezed, excess air can be discharged from the gap between the bags opposite the vent groove 421.

[0029] This utility model provides an automatic closing and pulling mechanism for waterless frozen eco-friendly toilet packaging bags. During the closing and pulling of the packaging bag, the closing drive assembly 5 drives two pulling components 4 to move closer together, and the pulling roller 42 closes the packaging bag located between the two pulling components 4. The traction motor 43 drives the two pulling rollers 42 to rotate, applying a downward pulling force to the packaging bag, thereby achieving automatic pulling of the packaging bag and improving the efficiency of packaging bag replacement. By opening multiple exhaust grooves 421 on the outer wall of the pulling roller 42, air inside the packaging bag can be discharged through the gaps between the packaging bags located at the exhaust grooves 421 after the pulling roller 42 has finished closing the packaging bag, thereby reducing the volume of the packaged excrement and saving space.

[0030] Furthermore, this application also provides a traction roller 42 with a different structure from the above embodiments. The traction roller 42 includes a roller body 422 and a plurality of transmission teeth 423 fixedly connected to the outer wall of the roller body 422. The roller body 422 is rotatably connected to the lead screw slider 41. The transmission teeth 423 are evenly distributed along the circumference of the roller body 422. The exhaust groove 421 is located at the end of the transmission teeth 423 away from the roller body 422. The two traction rollers 42 are driven by meshing through the transmission teeth 423.

[0031] Specifically, such as Figure 1As shown, when the packing bag is pulled, the closing drive assembly 5 drives the two traction rollers 42 to approach and mesh with each other. The traction motor 43 drives either traction roller 42 to rotate, and the two traction rollers 42 transmit torque through meshing. At the same time, the meshing transmission between the two traction rollers 42 applies traction force to the packing bag placed between the two traction rollers 42, thereby pulling the packing bag. The exhaust groove 421 is located at the port of the transmission gear 423, so that excess air can be discharged from between the packing bags opposite to the exhaust groove 421.

[0032] Furthermore, the closing drive assembly 5 includes a bidirectional lead screw 51 and a closing motor 52 that drives the bidirectional lead screw 51 to rotate. The bidirectional lead screw 51 is rotatably connected to the frame 3. One lead screw slider 41 is threadedly connected to one end of the bidirectional lead screw 51, and the other lead screw slider 41 is threadedly connected to the other end of the bidirectional lead screw 51.

[0033] Specifically, when the closing drive assembly 5 drives the two traction assemblies 4 to move, the closing motor 52 drives the bidirectional lead screw 51 to rotate, and the helical directions of the threads at both ends of the bidirectional lead screw 51 are opposite. When the bidirectional lead screw 51 rotates, the lead screw sliders 41, which are respectively threaded to both ends of the bidirectional lead screw 51, move closer to or further away from each other.

[0034] Furthermore, there are two bidirectional lead screws 51, which are threaded to both sides of the lead screw slider 41. The ends of the two bidirectional lead screws 51 are fixedly connected to synchronous pulleys 53, and a synchronous transmission belt 54 is sleeved between the two synchronous pulleys 53. The closing motor 52 drives either bidirectional lead screw 51 to rotate, and a tensioning component 6 for adjusting the tension of the synchronous transmission belt 54 is connected to the frame 3.

[0035] Specifically, such as Figure 1 , Figure 2 As shown, each end of the lead screw slider 41 is threaded with a bidirectional lead screw 51, which is rotatably connected to the frame 3. The synchronous rotation of the bidirectional lead screws 51 applies a thrust to both ends of the lead screw slider 41, driving the two lead screw sliders 41 closer together or further apart, thus improving the stability of the lead screw slider 41's sliding. The closing motor 52 drives either bidirectional lead screw 51 to rotate. The ends of the two bidirectional lead screws 51 are respectively fixedly connected to synchronous pulleys 53 located on the same side. A synchronous transmission belt 54 is sleeved between the two synchronous pulleys 53. Torque is transmitted between the two bidirectional lead screws 51 through the synchronous belt transmission, thereby ensuring the synchronicity of the rotation of the two bidirectional lead screws 51.

[0036] Furthermore, a tensioning assembly 6 for adjusting the tension of the synchronous transmission belt 54 is connected to the frame 3. The tensioning assembly 6 includes a tensioning frame 61 and a tensioning wheel 62. The tensioning wheel 62 is rotatably connected to the tensioning frame 61. The tensioning frame 61 is movably connected to the frame 3. The outer edge of the tensioning wheel 62 is in contact with the synchronous transmission belt 54.

[0037] Specifically, such as Figure 2 As shown, the tensioning wheel 62 is rotatably connected to the end of the tensioning frame 61, bringing the tensioning wheel 62 into contact with the synchronous drive belt 54 and applying pressure to it. The position of the tensioning frame 61 on the frame 3 is adjusted to regulate the pressure applied to the synchronous drive belt 54. The tensioning wheel 62 can be positioned inside the synchronous drive belt 54; when adjusting the tension of the synchronous drive belt 54, the tensioning wheel 62 pushes the synchronous drive belt 54 from the inside out, thus adjusting the tension of the synchronous drive belt 54. Alternatively, the tensioning wheel 62 can be positioned outside the synchronous drive belt 54; when adjusting the tension of the synchronous drive belt 54, the tensioning wheel 62 pushes the synchronous drive belt 54 from the outside in, thus adjusting the tension of the synchronous drive belt 54.

[0038] In an optional embodiment, the tensioning frame 61 is provided with a first adjustment groove 63, and a first clamping bolt 64 is inserted into the first adjustment groove 63. The end of the first clamping bolt 64 passes through the first adjustment groove 63 and is threadedly connected to the frame body 3. The tensioning frame 61 slides along the first adjustment groove 63 to make the tensioning wheel 62 approach or move away from the synchronous transmission belt 54. The head of the first clamping bolt 64 contacts the end face of the tensioning frame 61 to press the tensioning frame 61 onto the frame body 3.

[0039] Specifically, such as Figure 2 As shown, a first adjustment groove 63 is formed on the tensioning frame 61, and two first clamping bolts 64 are inserted into the first adjustment groove 63. The two first clamping bolts 64 pass through the first adjustment groove 63 and are threadedly connected to the frame body 3. The first adjustment groove 63 is set to be straight, and the two first clamping bolts 64 guide and limit the first adjustment groove 63, so that the first adjustment groove 63 is perpendicular to the synchronous transmission belt 54. When adjusting the relative position of the tensioning assembly 6 and the synchronous transmission belt 54, the tensioning frame 61 is slid along the first adjustment groove 63 to adjust the clamping force between the tensioning wheel 62 and the synchronous transmission belt 54. After the adjustment is completed, the position of the tensioning frame 61 is fixed by tightening the first clamping bolts 64.

[0040] In another optional embodiment, the end of the tensioning frame 61 away from the tensioning wheel 62 is connected to a rotating shaft 65. The tensioning frame 61 is rotatably connected to the frame body 3 through the rotating shaft 65. A second adjusting groove 66 is provided on the tensioning frame 61 between the rotating shaft 65 and the tensioning wheel 62. A second clamping bolt 67 is inserted into the second adjusting groove 66. The end of the second clamping bolt 67 passes through the second adjusting groove 66 and is threadedly connected to the frame body 3. The head of the second clamping bolt 67 contacts the end face of the tensioning frame 61 to press the tensioning frame 61 onto the frame body 3.

[0041] Specifically, such as Figure 3As shown, the tensioning frame 61 is rotatably connected to the frame body 3 via a rotating shaft 65. By rotating the tensioning frame 61 on the frame body 3, the position of the tensioning wheel 62 is adjusted, causing the tensioning wheel 62 to press against the synchronous transmission belt 54. The second adjusting groove 66 is set in an arc shape, and the second clamping bolt 67 passes through the second adjusting groove 66 and is threadedly connected to the frame body 3. When the tensioning frame 61 is rotated, the second adjusting groove 66 and the second clamping bolt 67 move relative to each other. After the rotation adjustment of the tensioning frame 61 is completed, the tensioning frame 61 is fixed by tightening the second clamping bolt 67 and pressing it against the frame body 3.

[0042] Furthermore, it also includes a controller, a first proximity switch 7 and a second proximity switch 8, the first proximity switch 7, the second proximity switch 8, the closing motor 52 and the traction motor 43, which are respectively connected to the controller in communication. The first proximity switch 7 is fixedly connected to any lead screw slider 41 and is used to detect the relative position between the two lead screw sliders 41. The second proximity switch 8 is fixedly connected to the frame 3 and is used to detect the relative position between the lead screw slider 41 and the frame 3.

[0043] Specifically, such as Figure 1 As described, a first proximity switch 7 is fixedly connected to one lead screw slider 41, and a first sensing plate 71 is fixedly connected to the other lead screw slider 41. The first proximity switch 7 and the first sensing plate 71 move with the two lead screw sliders 41. When the two traction rollers 42 approach each other to close the bag, the first sensing plate 71 moves to the first proximity switch 7, triggering the first proximity switch 7. The controller then controls the closing motor 52 to stop rotating and controls the traction motor 43 to rotate and pull the closed bag. After the bag is pulled, the controller controls the traction motor 43 to stop. Specifically, the speed and running time of the traction motor 43 can be set. When the traction motor 43 reaches the set speed and runs for the set time, the pulling of the bag is considered complete. Alternatively, an encoder can be connected to the end of the traction roller 42 to detect the number of rotations of the traction roller 42. When the traction roller 42 reaches the set number of rotations, the pulling of the bag is considered complete, and the controller controls the traction motor 43 to stop, thus achieving the pulling of a fixed length of bag each time. Specifically, an alarm can be connected to the controller. The controller can be used to set the initial length and warning length of the packaging bag. Since the initial length and the length of the packaging bag pulled by the traction roller 42 each time are fixed, the controller calculates the remaining length of the packaging bag after each run. When the remaining length of the packaging bag is less than or equal to the warning length, the controller activates the alarm to remind personnel to replace the packaging bag. Each time personnel replace the packaging bag, the controller updates the remaining length information of the packaging bag.

[0044] Specifically, such as Figure 4As shown, the second proximity switch 8 is fixedly connected to the frame 3, and the second sensing plate 81 is fixedly connected to the lead screw slider 41 adjacent to the frame 3 where the second proximity switch 8 is connected. Alternatively, the second proximity switch 8 is fixedly connected to the lead screw slider 41, and the second sensing plate 81 is fixedly connected to the frame 3 adjacent to the lead screw slider 41 where the second proximity switch 8 is connected.

[0045] The second sensing plate 81 or the second proximity switch 8 moves along with the lead screw slider 41. When the two traction sliders move away from each other to a set position, the second sensing plate 81 moves to the second proximity switch 8, triggering the second proximity switch 8. The controller then controls the closing motor 52 to stop, completing the reset of the two traction components 4. This achieves automatic control of the closing traction mechanism.

[0046] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic closing and pulling mechanism for a waterless freezing eco-friendly toilet bag, characterized in that: The device includes a frame, two traction components, and a closing drive component that drives the two traction components to move closer or further apart. Each traction component includes a lead screw slider and a traction roller. The traction roller is rotatably connected to the lead screw slider and is located on the opposite side of the lead screw slider. A traction motor that drives the traction roller to rotate is connected to the lead screw slider. An exhaust groove is provided on the outer wall of the traction roller and extends circumferentially along the traction roller. During the process of the two traction rollers applying a pushing force to the packing bag, at least one port of the exhaust groove comes into contact with the packing bag.

2. The automatic closing and pulling mechanism for the waterless freezing environmentally friendly toilet packaging bag according to claim 1, characterized in that: The traction roller includes a roller body and a plurality of transmission teeth fixedly connected to the outer wall of the roller body. The roller body is rotatably connected to the lead screw slider. The transmission teeth are evenly distributed along the circumference of the roller body. The exhaust groove is located at the end of the transmission teeth away from the roller body. The two traction rollers are driven by meshing through the transmission teeth.

3. The automatic closing and pulling mechanism for the waterless freezing environmentally friendly toilet packaging bag according to claim 1, characterized in that: The closing drive assembly includes a bidirectional lead screw and a closing motor that drives the bidirectional lead screw to rotate. The bidirectional lead screw is rotatably connected to the frame. One lead screw slider is threadedly connected to one end of the bidirectional lead screw, and the other lead screw slider is threadedly connected to the other end of the bidirectional lead screw.

4. The automatic closing and pulling mechanism for the waterless freezing environmentally friendly toilet packaging bag according to claim 3, characterized in that: Two bidirectional lead screws are provided, and the two bidirectional lead screws are respectively threaded to both sides of the lead screw slider. The ends of the two bidirectional lead screws are respectively fixedly connected to synchronous pulleys, and a synchronous transmission belt is sleeved between the two synchronous pulleys. The closing motor drives either of the bidirectional lead screws to rotate.

5. The automatic closing and pulling mechanism for the waterless freezing environmentally friendly toilet packaging bag according to claim 4, characterized in that: The frame is connected to a tensioning assembly for adjusting the tension of the synchronous transmission belt. The tensioning assembly includes a tensioning frame and a tensioning wheel. The tensioning wheel is rotatably connected to the tensioning frame, and the tensioning frame is movably connected to the frame. The outer wall of the tensioning wheel is in contact with the synchronous transmission belt.

6. The automatic closing and pulling mechanism for the packaging bag of the waterless freezing environmentally friendly toilet according to claim 5, characterized in that: The tensioning frame is provided with a first adjustment groove, and a first clamping bolt is inserted into the first adjustment groove. The end of the first clamping bolt passes through the first adjustment groove and is threadedly connected to the frame body. The tensioning frame slides along the first adjustment groove to make the tensioning wheel move closer to or away from the synchronous transmission belt. The head of the first clamping bolt contacts the end face of the tensioning frame to press the tensioning frame onto the frame body.

7. The automatic closing and pulling mechanism for the packaging bag of the waterless freezing environmentally friendly toilet according to claim 5, characterized in that: The tensioning frame is connected to a rotating shaft at one end away from the tensioning wheel. The tensioning frame is rotatably connected to the frame body via the rotating shaft. A second adjusting groove is provided on the tensioning frame between the rotating shaft and the tensioning wheel. A second clamping bolt is inserted into the second adjusting groove. The end of the second clamping bolt passes through the second adjusting groove and is threadedly connected to the frame body. The head of the second clamping bolt contacts the end face of the tensioning frame to press the tensioning frame onto the frame body.

8. The automatic closing and pulling mechanism for the packaging bag of the waterless freezing environmentally friendly toilet according to claim 3, characterized in that: It also includes a controller, a first proximity switch and a second proximity switch, wherein the first proximity switch, the second proximity switch, the closing motor and the traction motor are respectively communicatively connected to the controller; The first proximity switch is fixedly connected to either of the lead screw and slider, and is used to detect the relative position between the two lead screws and sliders; The second proximity switch is fixedly connected to the frame or any of the lead screw sliders, and is used to detect the relative position between the lead screw slider and the frame.

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