Segmented liquid propulsion device

Abstract

The present application relates to the technical field of liquid injection devices. Specifically disclosed is a segmented liquid propulsion device. Key features of the technical solution are as follows: The segmented liquid propulsion device comprises a chamber body and a cap body. The chamber body comprises an accommodating part and a quantitative propulsion part. A medium is stored in the accommodating part. One end of the accommodating part is provided with a nozzle, and the quantitative propulsion part is arranged at the other end of the accommodating part and used to quantitatively push out the medium within the accommodating part. The cap body is detachably connected to the end of the accommodating part provided with the nozzle. The present application has the effect of facilitating improved accuracy in dose propulsion.

Description

Liquid segmented propulsion device Technical Field

[0001] The present application relates to the technical field of liquid injection devices, and in particular to a liquid segmented propulsion device. Background Art

[0002] A syringe is a common medical device consisting of a syringe with a small hole at the front end and a matching piston rod. It is used to inject a small amount of medium into or extract from areas that are inaccessible by other methods.

[0003] Common handheld syringes are usually operated by manual pressing to advance the syringe, and the amount of advancement is completely controlled by the operator. The dosage accuracy is poor and it is not suitable for some occasions where high dosage accuracy is required. This problem needs to be solved urgently. Summary of the Invention

[0004] In order to improve the accuracy of dose advancement, the present application provides a liquid segmented advancement device.

[0005] The present application provides a liquid segmented propulsion device, comprising:

[0006] A chamber body, the chamber body comprising a receiving portion and a quantitative pushing portion, the receiving portion storing a medium, a nozzle at one end of the receiving portion, and the quantitative pushing portion being provided at the other end of the receiving portion and used to push out a quantitative amount of the medium in the receiving portion;

[0007] A cap body is detachably connected to one end of the accommodating portion having the nozzle.

[0008] By adopting the above technical solution, when the liquid segmented propulsion device is not needed, the cap body can be detachably connected to the end of the accommodating part having the nozzle to isolate and protect the medium in the accommodating part. When the liquid segmented propulsion device is needed, the operator separates the cap body from the chamber body, and then pushes out the medium in the accommodating part in a quantitative manner through the quantitative propulsion part, thereby realizing the quantitative use of the dose, which is conducive to improving the accuracy of the dose propulsion.

[0009] Preferably, the quantitative advancement portion includes a piston rod and a movable sleeve, the movable sleeve is movably sleeved on the end of the accommodating portion away from the nozzle, the accommodating portion is fixedly provided with a limiting step for preventing the movable sleeve from moving toward the nozzle, the movable sleeve is threadedly sleeved on the piston rod, and a sealing sleeve is provided on the end of the piston rod facing the nozzle, and the end of the piston rod provided with the sealing sleeve penetrates into the accommodating portion, and the torque force of the threaded sleeve of the movable sleeve and the piston rod is less than the friction force between the sealing sleeve and the accommodating portion.

[0010] By adopting the above technical solution, before using the liquid segmented propulsion device, the movable sleeve abuts against the limiting step. When the operator rotates the movable sleeve, the torque force of the movable sleeve and the piston rod threaded sleeve is less than the friction force between the sealing sleeve and the accommodating portion, so that the movable sleeve moves along the length direction of the piston rod, and the limiting step prevents the movable sleeve from moving in the direction close to the nozzle, so that the movable sleeve can only move in the direction away from the nozzle. At this time, the movable sleeve has space to move in the direction close to the nozzle, and then the operator presses the movable sleeve in the direction close to the nozzle, and the movable sleeve drives the piston rod to push out the medium in the accommodating portion until the movable sleeve abuts the limiting step again, thereby realizing the quantitative push-out of the medium. The operator can control the moving distance of the movable sleeve by rotating the movable sleeve, thereby controlling the amount of medium used, which is beneficial to improving the accuracy of dosage propulsion.

[0011] Preferably, the movable sleeve includes a barrel and a connecting sleeve, the connecting sleeve is coaxially fixedly connected to the inside of the barrel, and the connecting sleeve is threadedly sleeved on the piston rod.

[0012] By adopting the above technical solution, the barrel is threadedly sleeved on the piston rod through the connecting sleeve, which can reduce the production diameter of the piston rod and reduce the production cost while achieving the threaded sleeve connection function.

[0013] Preferably, a limiting assembly is provided at one end of the accommodating portion connected to the movable sleeve, and the limiting assembly includes a pushing member and an elastic member. The accommodating portion is provided with an accommodating groove for accommodating the pushing member and the elastic member, the pushing member is close to the accommodating portion, and the elastic member is close to the quantitative advancement portion. The pushing member moves with the movement of the movable sleeve, one end of the elastic member abuts against the pushing member, and the other end of the elastic member abuts against the groove wall of the accommodating groove.

[0014] By adopting the above technical solution, when the movable sleeve moves in a direction away from the nozzle, the movable sleeve drives the pushing member to squeeze the elastic member, and the elastic member has a blocking force on the pushing member and the movable sleeve, which is beneficial to prevent the movable sleeve from completely separating from the accommodating portion. At the same time, the elastic member has a tightening effect on the pushing member and the movable sleeve, which is beneficial to improve the structural stability between the movable sleeve and the piston rod. In addition, when the operator presses the movable sleeve, the restoring force of the elastic member after being squeezed promotes the operator's operation of pressing the movable sleeve, thereby facilitating the operator's pressing operation on the movable sleeve.

[0015] Preferably, the pushing member is configured as a pushing clamping ring, a clamping groove is provided on the inner side of the cylinder body, the inner side of the pushing clamping ring is accommodated in the accommodating groove, and the outer side of the pushing clamping ring is clamped in the clamping groove.

[0016] By adopting the above technical solution, the push clamp is clamped in the clamping groove, so that the push clamp can move with the movement of the barrel, and at the same time, the elastic member is squeezed as the push clamp moves.

[0017] Preferably, the elastic member is configured as a spring, and when the side of the pushing member facing away from the spring abuts against the groove wall of the accommodating groove, the spring is in a natural state.

[0018] By adopting the above technical solution, when the side of the pushing member facing away from the spring abuts against the wall of the accommodating groove, the spring is in a natural state. When the barrel drives the pushing retaining ring to move in a direction away from the nozzle, the pushing retaining ring squeezes the spring, so that the spring is in a compressed state. The restoring force of the spring has a blocking effect on the movable sleeve, which is beneficial to prevent the movable sleeve from completely detaching from the accommodating portion, and the restoring force of the spring presses the movable sleeve against the pushing retaining ring, which is beneficial to improve the structural stability between the movable sleeve and the piston rod. In addition, the direction of the restoring force of the spring is the same as the direction of the pressure applied by the operator to press the movable sleeve, which promotes the operator to press the movable sleeve.

[0019] Preferably, a clamping block is fixedly provided on the outer side wall of the bin body, the cap body is sleeved on the accommodating portion of the bin body, and a clamping groove is provided on the inner side wall of the cap body for clamping with the clamping block.

[0020] By adopting the above technical solution, the cap body is detachably connected to the bin body through the snap-fitting cooperation between the snap-fitting block and the snap-fitting groove, and the structure is simple and convenient.

[0021] Preferably, the accommodating portion is configured as a transparent accommodating compartment, and the cap body is provided with a window for observing the accommodating portion.

[0022] By adopting the above technical solution, the operator can observe the medium in the accommodating portion through the window, thereby facilitating the operator's use of the liquid segmented propulsion device.

[0023] Preferably, a spring piece is provided on the position of the magazine body that is engaged with the cap body, and the spring piece protrudes toward the direction of the nozzle. The engaging groove includes a straight groove portion and a groove portion that are connected, and the groove portion and the straight groove portion are arranged adjacent to each other on the left and right. When the magazine body needs to be connected to the cap body, the engaging block is aligned with the straight groove portion.

[0024] By adopting the above technical solution, when the cap body needs to be connected to the warehouse body, the user aligns the snap block with the straight groove portion and pushes it to push the snap block into the straight groove portion. At this time, the snap block is located on one side of the groove portion. At the same time, the spring piece is squeezed, and then the user rotates the warehouse body to allow the snap block to enter the groove portion. After the user lets go, the restoring force of the spring piece after being squeezed pushes the snap block deeper into the groove portion. The spring piece limits the snap block in the axial direction of the warehouse body, and the groove portion limits the snap block in the direction perpendicular to the axis of the warehouse body. In the absence of external force, the warehouse body and the cap body are difficult to separate, which is beneficial to improving the stability of the connection between the warehouse body and the cap body.

[0025] Preferably, a serpentine groove is provided on the bin body at a position where the bin body is engaged with the cap body, and the serpentine groove is arranged at an angle to form the spring piece.

[0026] By adopting the above technical solution, the setting of the serpentine groove is conducive to improving the elasticity of the shrapnel, and the opening of the serpentine groove is conducive to reducing the weight of the segmented propulsion device while improving the elasticity of the shrapnel, thereby improving the portability.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By arranging the piston rod and the movable sleeve, before using the liquid segmented propulsion device, the movable sleeve abuts against the limiting step. When the operator rotates the movable sleeve, the torque force of the movable sleeve and the piston rod threaded sleeve is less than the friction force between the sealing sleeve and the accommodating portion, causing the movable sleeve to move along the length direction of the piston rod, and the limiting step prevents the movable sleeve from moving in the direction close to the nozzle, so that the movable sleeve can only move in the direction away from the nozzle. At this time, the movable sleeve has space to move in the direction close to the nozzle, and then the operator presses the movable sleeve in the direction close to the nozzle, and the movable sleeve drives the piston rod to push out the medium in the accommodating portion until the movable sleeve abuts against the limiting step again, thereby realizing the quantitative push-out of the medium. The operator can control the moving distance of the movable sleeve by rotating the movable sleeve, thereby controlling the amount of medium used, which is beneficial to improving the accuracy of dosage propulsion.

[0029] 2. By arranging a pushing member and an elastic member, when the movable sleeve moves in a direction away from the nozzle, the movable sleeve drives the pushing member to squeeze the elastic member. The elastic member has a blocking force on the pushing member and the movable sleeve, which is beneficial to prevent the movable sleeve from completely separating from the accommodating portion. At the same time, the elastic member has a tightening effect on the pushing member and the movable sleeve, which is beneficial to improve the structural stability between the movable sleeve and the piston rod. In addition, when the operator presses the movable sleeve, the restoring force after the elastic member is squeezed promotes the operator's operation of pressing the movable sleeve, thereby facilitating the operator's pressing operation on the movable sleeve.

[0030] 3. By providing a push clamping ring, the push clamping ring is clamped in the clamping groove, so that the push clamping ring can move with the movement of the barrel, and at the same time, the elastic member is squeezed as the push clamping ring moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of the liquid segmented propulsion device in Example 1 of the present application when the chamber body and the cap body are separated.

[0032] Figure 2 is a vertical cross-sectional view of the warehouse body in Example 1 of the present application.

[0033] Figure 3 is a vertical cross-sectional view of the quantitative propulsion unit in Example 1 of the present application.

[0034] FIG4 is an enlarged view of portion A in FIG3 .

[0035] Figure 5 is a structural diagram of the liquid segmented propulsion device in Example 2 of the present application when the warehouse body and the cap body are separated.

[0036] FIG6 is an enlarged view of portion B in FIG5.

[0037] Explanation of the accompanying drawings: 1. Warehouse body; 11. Accommodating portion; 12. Quantitative propulsion portion; 121. Piston rod; 122. Movable sleeve; 1221. Cylinder body; 1222. Connecting sleeve; 2. Nozzle; 3. Cap body; 4. Limiting step; 5. Sealing sleeve; 6. Limiting assembly; 61. Pushing clamp; 62. Spring; 7. Accommodating groove; 8. Clamping groove; 9. Clamping block; 10. Clamping groove; 101. Straight groove portion; 102. Groove portion; 13. Window; 14. Shrapnel; 15. Serpentine groove. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to Figures 1-6.

[0039] Example 1:

[0040] Embodiment 1 of the present application discloses a liquid segmented propulsion device, which includes a chamber body 1 and a cap body 3, with reference to FIG1. ​​The chamber body 1 and the cap body 3 are detachably connected to facilitate storage and use of the liquid segmented propulsion device. Specifically, the outer wall of the chamber body 1 is integrally formed with a snap-fit ​​block 9. At the same time, the cap body 3 is sleeved on the chamber body 1, and the inner wall of the cap body 3 is provided with a snap-fit ​​groove 10 that snaps with the snap-fit ​​block 9. The snap-fitting between the snap-fit ​​block 9 and the snap-fit ​​groove 10 allows the cap body 3 and the chamber body 1 to be detachably connected, which is simple and convenient.

[0041] 1 and 2 , the chamber body 1 includes a accommodating portion 11 and a quantitative propulsion portion 12. The accommodating portion 11 stores a medium, and one end of the accommodating portion 11 has a nozzle 2 for the medium to flow out. The cap body 3 is sleeved on the chamber body 1 from the end of the accommodating portion 11 having the nozzle 2 to isolate and protect the medium in the accommodating portion 11. The quantitative propulsion portion 12 is provided at the other end of the accommodating portion 11 and is used to quantitatively push the medium in the accommodating portion 11 out of the nozzle 2, thereby achieving quantitative use of the dose and eliminating the need for the operator to manually control the dose to be propulsed, thereby improving the accuracy of the dose propulsion. It should be noted that the accommodating portion 11 is provided as a transparent accommodating chamber. At the same time, the side wall of the cap body 3 is fixedly provided with a window 13 for observing the accommodating portion 11 along its length. The operator can observe the medium in the accommodating portion 11 through the window 13, thereby facilitating the operator's use of the liquid segmented propulsion device.

[0042] 2 and 3 , the metered delivery portion 12 includes a piston rod 121 and a movable sleeve 122. The movable sleeve 122 is movably mounted on the end of the accommodating portion 11 away from the nozzle 2. Furthermore, the accommodating portion 11 is fixedly provided with a stopper step 4 that prevents the movable sleeve 122 from moving toward the nozzle 2. The stopper step 4 is fixedly arranged around the circumference of the accommodating portion 11. The movable sleeve 122 is threadedly mounted on the piston rod 121. The end of the piston rod 121 facing the nozzle 2 is provided with a sealing sleeve 5. The end of the piston rod 121 provided with the sealing sleeve 5 penetrates the accommodating portion 11. In this embodiment, the sealing sleeve 5 is made of soft silicone to improve the sealing performance of the accommodating portion 11 and the friction between the piston rod 121 and the accommodating portion 11. It should be noted that the torque generated by the threaded mounting of the movable sleeve 122 and the piston rod 121 is less than the friction between the sealing sleeve 5 and the accommodating portion 11.

[0043] Before using the liquid segmented propulsion device, one end of the movable sleeve 122 abuts against the limiting step 4. When the operator rotates the movable sleeve 122, since the torque of the threaded sleeve 122 and the piston rod 121 is less than the friction between the sealing sleeve 5 and the accommodating portion 11, the movable sleeve 122 moves along the length direction of the piston rod 121, and the limiting step 4 prevents the movable sleeve 122 from moving in the direction close to the nozzle 2, so that the movable sleeve 122 can only move in the direction away from the nozzle 2. At this time, the movable sleeve 122 has space to move in the direction close to the nozzle 2, and then the operator presses the movable sleeve 122 in the direction close to the nozzle 2. The movable sleeve 122 drives the piston rod 121 to push out the medium in the accommodating portion 11 until the movable sleeve 122 abuts the limiting step 4 again, thereby realizing the quantitative pushout of the medium. The operator can control the moving distance of the movable sleeve 122 by rotating the movable sleeve 122, thereby controlling the amount of medium used, which is conducive to improving the accuracy of dosage propulsion.

[0044] 2 and 3 , the movable sleeve 122 includes a barrel 1221 and a connecting sleeve 1222. The connecting sleeve 1222 is coaxially fixedly connected to the interior of the barrel 1221, and the length of the connecting sleeve 1222 is less than the length of the barrel 1221. The connecting sleeve 1222 is threadedly sleeved on the piston rod 121. The barrel 1221 is threadedly sleeved on the piston rod 121 through the connecting sleeve 1222. While satisfying the function of the movable sleeve 122 being threadedly sleeved on the piston rod 121, the diameter of the piston rod 121 can be reduced or the thickness of the barrel 1221 can be reduced, thereby helping to reduce production costs and making the liquid segmented propulsion device more lightweight.

[0045] 3 and 4 , one end of the accommodating portion 11 that is movably connected to the barrel 1221 is provided with a limiting assembly 6 for limiting the movement of the barrel 1221 to prevent the barrel 1221 from completely detaching from the accommodating portion 11. Specifically, the limiting assembly 6 includes a pusher and an elastic member. The outer side wall of the accommodating portion 11 is surrounded by a accommodating groove 7 for accommodating the pusher and the elastic member. It should be noted that the pusher is located in the accommodating groove 7 near one end of the accommodating portion 11, and the elastic member is located in the accommodating groove 7 near one end of the quantitative advancement portion 12. The pusher moves with the movement of the movable sleeve 122, and one end of the elastic member abuts against the pusher, and the other end of the elastic member abuts against the groove wall of the accommodating groove 7.

[0046] As the movable sleeve 122 rotates and moves away from the nozzle 2, the barrel 1221 drives the pusher to move synchronously away from the nozzle 2. The pusher's movement compresses the elastic member, and the restoring force generated by the compression of the elastic member blocks the movement of the pusher, making it difficult for the barrel 1221 to completely disengage from the accommodating portion 11. In this embodiment, the pusher is configured as a pusher clasp 61, and the elastic member is configured as a spring 62. A retaining groove 8 is defined around the inner side of the barrel 1221. The inner side of the pusher clasp 61 is received within the accommodating groove 7, and the outer side of the pusher clasp 61 is engaged within the retaining groove 8. This allows the movement of the barrel 1221 to synchronously drive the pusher clasp 61. Simultaneously, when the side of the pusher clasp 61 facing away from the spring 62 abuts against the wall of the accommodating groove 7, the spring 62 is in a neutral position. It should be noted that the provision of the spring 62 and the push collar 61 not only prevents the barrel 1221 from completely separating from the accommodating portion 11, but the elastic force of the spring 62 also enhances structural stability, helping to prevent the various connecting structures in the cartridge body 1 from shaking due to assembly clearance, thereby further improving the accuracy of dose advancement. Furthermore, when the operator presses the movable sleeve 122, the restoring force of the compressed spring 62 facilitates the operator's pressing of the movable sleeve 122, thereby facilitating the operator's pressing operation.

[0047] The implementation principle of the liquid segmented propulsion device in Example 1 of the present application is as follows: before using the liquid segmented propulsion device, the barrel 1221 is in a state of abutting against the limit step 4. When the liquid segmented propulsion device needs to be used for quantitative use of the medium, the operator rotates the movable sleeve 122. Since the torque of the threaded sleeve of the movable sleeve 122 and the piston rod 121 is less than the friction between the sealing sleeve 5 and the accommodating portion 11, the piston rod 121 is stationary, and the movable sleeve 122 moves along the length direction of the piston rod 121. The limit step 4 prevents the movable sleeve 122 from moving towards the nozzle 2. When the movable sleeve 122 moves in the direction away from the nozzle 2, the movable sleeve 122 can only move in the direction away from the nozzle 2. At this time, the movable sleeve 122 has space to move in the direction close to the nozzle 2. Then the operator presses the movable sleeve 122 in the direction close to the nozzle 2. The movable sleeve 122 drives the piston rod 121 to push the medium in the accommodating portion 11 out until the movable sleeve 122 abuts against the limiting step 4 again, thereby realizing the quantitative push-out of the medium. The operator can control the moving distance of the movable sleeve 122 by rotating the movable sleeve 122, thereby controlling the amount of medium used, which is beneficial to improving the accuracy of dose advancement.

[0048] Example 2:

[0049] 5 and 6 , the difference from Example 1 is that a spring piece 14 is provided at the position on the warehouse body 1 that is engaged with the cap body 3, and the spring piece 14 protrudes toward the direction of the nozzle 2. The engaging groove 10 includes a straight groove portion 101 and a groove portion 102 that are connected. The groove portion 102 and the straight groove portion 101 are arranged adjacent to each other on the left and right. When the warehouse body 1 and the cap body 3 need to be connected, the engaging block 9 is aligned with the straight groove portion 101. It should be noted that a serpentine groove 15 is provided at the position on the warehouse body 1 that is engaged with the cap body 3. The serpentine groove 15 is arranged at an angle to form the spring piece 14. The provision of the serpentine groove 15 is conducive to improving the elasticity of the spring piece 14. The provision of the serpentine groove 15 is conducive to reducing the weight of the segmented propulsion device while improving the elasticity of the spring piece 14, thereby improving the portability.

[0050] When the cap body 3 needs to be connected to the warehouse body 1, the user aligns the clamping block 9 with the straight groove portion 101 and pushes it to push the clamping block 9 into the straight groove portion 101. At this time, the clamping block 9 is located on one side of the groove portion 102. At the same time, the spring piece 14 is squeezed, and then the user rotates the warehouse body 1 to make the clamping block 9 enter the groove portion 102. After the user lets go, the restoring force of the spring piece 14 after being squeezed pushes the clamping block 9 deeper into the groove portion 102. The spring piece 14 limits the clamping block 9 in the axial direction of the warehouse body 1, and the groove portion 102 limits the clamping block 9 in the direction perpendicular to the axis of the warehouse body 1. In the absence of external force, the warehouse body 1 and the cap body 3 are difficult to separate, which is beneficial to improve the stability of the connection between the warehouse body 1 and the cap body 3.

[0051] The implementation principle of a liquid segmented propulsion device in Example 2 of the present application is roughly the same as that in the previous embodiment and will not be repeated here.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A liquid segmented propulsion device, characterized in that: include: A chamber body (1), the chamber body (1) comprising a receiving portion (11) and a quantitative pushing portion (12), the receiving portion (11) storing a medium, a nozzle (2) at one end of the receiving portion (11), and the quantitative pushing portion (12) being arranged at the other end of the receiving portion (11) and used for quantitatively pushing out the medium in the receiving portion (11); A cap body (3) is detachably connected to one end of the accommodating portion (11) having the nozzle (2).

2. The liquid segmented propulsion device according to claim 1, characterized in that: The quantitative advancement portion (12) comprises a piston rod (121) and a movable sleeve (122), wherein the movable sleeve (122) is movably sleeved on an end of the accommodating portion (11) away from the nozzle (2), and the accommodating portion (11) is fixedly provided with a limiting step (4) for preventing the movable sleeve (122) from moving toward the nozzle (2). The movable sleeve (122) is threadedly sleeved on the piston rod (121), and a sealing sleeve (5) is provided on an end of the piston rod (121) facing the nozzle (2). The end of the piston rod (121) provided with the sealing sleeve (5) penetrates into the accommodating portion (11), and the torque force of the threaded sleeve of the movable sleeve (122) and the piston rod (121) is smaller than the friction force between the sealing sleeve (5) and the accommodating portion (11).

3. The liquid segmented propulsion device according to claim 2, characterized in that: The movable sleeve (122) comprises a barrel (1221) and a connecting sleeve (1222), wherein the connecting sleeve (1222) is coaxially fixedly connected to the inside of the barrel (1221), and the connecting sleeve (1222) is threadedly sleeved on the piston rod (121).

4. The liquid segmented propulsion device according to claim 3, characterized in that: A limiting assembly (6) is provided at one end of the accommodating portion (11) connected to the movable sleeve (122), and the limiting assembly (6) includes a pushing member and an elastic member. The accommodating portion (11) is provided with an accommodating groove (7) for accommodating the pushing member and the elastic member. The pushing member is close to the accommodating portion (11), and the elastic member is close to the quantitative advancing portion (12). The pushing member moves with the movement of the movable sleeve (122), and one end of the elastic member abuts against the pushing member, and the other end of the elastic member abuts against the groove wall of the accommodating groove (7).

5. The liquid segmented propulsion device according to claim 4, characterized in that: The pushing member is configured as a pushing snap ring (61), a snap groove (8) is provided on the inner side of the barrel (1221), the inner side of the pushing snap ring (61) is accommodated in the accommodation groove (7), and the outer side of the pushing snap ring (61) is engaged in the snap groove (8).

6. The liquid segmented propulsion device according to claim 4, characterized in that: The elastic member is configured as a spring (62). When the side of the pushing member facing away from the spring (62) abuts against the groove wall of the accommodating groove (7), the spring (62) is in a natural state.

7. The liquid segmented propulsion device according to claim 1, characterized in that: A snap-fit ​​block (9) is fixedly provided on the outer side wall of the bin body (1); the cap body (3) is sleeved on the accommodating portion (11) of the bin body (1); and a snap-fit ​​groove (10) is provided on the inner side wall of the cap body (3) for snap-fitting with the snap-fit ​​block (9).

8. The liquid segmented propulsion device according to claim 1, characterized in that: The accommodating portion (11) is configured as a transparent accommodating compartment, and the cap body (3) is provided with a window (13) for observing the accommodating portion (11).

9. The liquid staged propulsion device according to claim 7, characterized in that: A spring piece (14) is provided on the magazine body (1) at a position where it is engaged with the cap body (3), and the spring piece (14) protrudes toward the direction of the nozzle (2). The engaging groove (10) includes a straight groove portion (101) and a groove portion (102) that are connected to each other. The groove portion (102) and the straight groove portion (101) are arranged adjacent to each other on the left and right. When it is necessary to connect the magazine body (1) with the cap body (3), the engaging block (9) is aligned with the straight groove portion (101).

10. The liquid staged propulsion device according to claim 9, characterized in that: A serpentine groove (15) is provided on the bin body (1) at a position where the bin body (1) is engaged with the cap body (3), and the serpentine groove (15) is arranged at an angle to form the spring piece (14).

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