Modular and quickly assembled metering tank

Abstract

The application relates to the technical field of electric variable measurement, in particular to a modular and quickly-assembled metering box, which comprises an assembling component arranged between a first mounting area and a second mounting area, the assembling component comprises a plug-in cylinder arranged in the second mounting area, a mounting cylinder fixedly connected in the first mounting area, a shaft rod slidably connected to the mounting cylinder, a first reset spring fixedly connected between the shaft rod and the mounting cylinder, a corrugated cylinder rotatably connected to the mounting cylinder, a concave-convex ring slidably connected to the mounting cylinder, and a second reset spring fixedly connected between the mounting cylinder and the concave-convex ring. The box body is quickly assembled and stably locked by using the assembling component, mechanical interlocking is realized by using the relative displacement between the plug-in cylinder and the mounting cylinder during the assembling process, and a rigid self-locking structure is formed after the plug-in cylinder and the mounting cylinder are assembled, so that the assembling efficiency is ensured and the structural strength requirement is ensured, thereby meeting diversified application requirements.

Description

Technical Field

[0001] This invention relates to the field of electrical variable measurement technology, specifically to a modular metering box that can be quickly assembled. Background Technology

[0002] Metering boxes are important devices in fields such as power, communication and automation control. They are mainly used to install and protect metering instruments and control equipment. Their function is to provide a safe and stable operating environment for the internal equipment. At the same time, their reasonable layout and design greatly facilitate the daily maintenance and management of the equipment, thereby ensuring the efficient operation of the entire system.

[0003] Because different devices vary greatly in size and installation requirements, traditional metering boxes often need to be specially customized according to the actual installation needs of each project to meet the usage conditions. This customization model greatly reduces the flexibility of the metering box, not only increasing production costs but also making the installation process more complicated, requiring professionals to spend a lot of time and energy on debugging and installation.

[0004] To adapt to diverse installation needs, metering boxes are gradually evolving towards modularity, which involves assembling standardized unit modules to flexibly adjust the box volume. This approach allows for the rapid construction of metering boxes adapted to different equipment simply by selecting the appropriate number of modules based on actual requirements, effectively reducing customization costs. However, existing modular metering box assembly methods still have limitations. Their fixing primarily relies on bolts or clips, requiring tools during installation, making the process cumbersome and time-consuming, and requiring further optimization and improvement. Summary of the Invention

[0005] This invention provides a modular metering box that is easy to assemble and has a stable connection, so as to improve installation efficiency and meet diverse application needs.

[0006] The technical solution is as follows: A modular, rapidly assembleable metering box, comprising: a box body, with a first installation area and a second installation area respectively provided on both sides of the box body; an assembly component disposed between the first and second installation areas for assembling and fixing the box body, the assembly component comprising: a insert cylinder disposed in the second installation area, having a ring of access holes arranged in a circumferential array at equal angles; an installation cylinder fixedly connected to the first installation area; a ring of shafts slidably connected to the installation cylinder, the shafts being arranged in a circumferential array at equal angles along the installation cylinder; a first return spring fixedly connected between the shafts and the installation cylinder; a corrugated cylinder rotatably connected to the installation cylinder, the cylinder wall having a spiral guide groove; a guide shaft fixedly connected to the insert cylinder, the guide shaft engaging with the guide groove; a concave-convex ring slidably connected to the installation cylinder, which contacts the corrugated surface of the corrugated cylinder, the inner surface of the concave-convex ring having a ring of first inclined control surfaces for contacting each shaft; and a second return spring fixedly connected between the installation cylinder and the concave-convex ring.

[0007] Furthermore, the assembly components are arranged in layers along the vertical direction, with at least two layers, and each layer of assembly components has at least two sets along the front-back direction.

[0008] Furthermore, the metering box also includes: an unlocking component disposed in the first installation area, used to unlock the assembly and fixing function of the assembly components on the box body. The unlocking component includes: an installation bushing fixedly connected in the first installation area, the number of layers of the installation bushing being consistent with the number of layers of the assembly components, and the arrangement position corresponding one-to-one with the position of each layer of assembly components; a first threaded rod rotatably connected to each layer of installation bushing; a connecting block fixedly connected between the concave and convex rings of each group of assembly components in the same layer, with each layer's connecting block passing through the first threaded rod corresponding to its position; a guide ring slidably connected to each layer of installation bushing, with each layer's guide ring threadedly connected to each layer's first threaded rod and correspondingly contacting each layer's connecting block; an annular worm gear fixedly connected to the end of each layer's first threaded rod; a control rod rotatably connected in the first installation area; a worm segment fixedly connected to the control rod, the number of layers of the worm segment being consistent with the number of layers of the assembly components, with each layer correspondingly meshing with each layer's annular worm gear; and a first knob fixedly connected to the top of the control rod and exposed outside the box body.

[0009] Furthermore, each assembly component also includes: a mounting plate fixedly connected to the second mounting area, to which the insert is rotatably connected; and a reset torsion spring fixedly connected between the insert and the mounting plate, the reset torsion spring causing the insert to be in the unfolded state in its natural state.

[0010] Furthermore, a through groove is provided on the outer wall of the second installation area, which is arranged according to the number and position of each insert; the metering box also includes: a folding assembly disposed in the second installation area for folding the insert in the unfolded state, the folding assembly including: a mounting frame fixedly connected to the second installation area; a control plate slidably connected to the mounting frame, the control plate having a second inclined control surface arranged according to the number and position of each insert; a second threaded rod rotatably connected to the upper part of the second installation area, the second threaded rod being threadedly connected to the control plate; and a second knob fixedly connected to the top of the second threaded rod and exposed outside the box body for external operation control.

[0011] Furthermore, the retraction assembly also includes: a stop plate fixedly connected to the control panel, which is set according to the number and position of each insert, and the stop plate is located below each second inclined control surface.

[0012] Furthermore, the metering box also includes: a sealing component disposed in the second installation area, the number of layers of the sealing component being consistent with the number of layers of the assembly component, used to correspondingly seal each through slot when the insert is in the folded state, the sealing component including: a sealing block disposed in the second installation area for sealing the through slots.

[0013] Furthermore, the enclosure assembly also includes: a guide plate fixedly connected to the second installation area, located below the through groove, with a 7-shaped groove on the guide plate; a movable shaft slidably connected to the groove in the guide plate; a connecting plate rotatably connected to the movable shaft; a guide frame fixedly connected to the second installation area; a mating plate slidably connected to the guide frame, with one end of the mating plate rotatably connected to the connecting plate, and the enclosure block rotatably connected to the other end of the connecting plate; toothed plates fixedly connected to the control plate and the mating plate respectively, with the teeth of the two toothed plates arranged in opposite directions; and a gear rotatably connected to the second installation area, with the toothed plates on both sides simultaneously meshing with the gear.

[0014] The beneficial effects of this invention are as follows: This invention uses assembly components to achieve rapid assembly and stable locking of the housing. During assembly, the relative displacement between the insert and mounting cylinders achieves mechanical interlocking, and the assembled insert and mounting cylinders form a rigid self-locking structure, ensuring both assembly efficiency and structural strength requirements to meet diverse application needs. This invention uses an unlocking component to directionally unlock the assembly components. While maintaining the stability of the original self-locking structure, the unlocking operation can be completed simply by controlling the rotation of the first knob, making disassembly convenient. Furthermore, the self-locking characteristics of the annular worm gear and worm segment are used to maintain the unlocked position without continuous human intervention, further improving operational convenience. This invention designs the insert as a foldable structure and sets a retraction component to control the folding of the insert, improving the structural safety of the insert. This invention uses a sealing component to achieve linkage protection. When folding the insert, the linkage control automatically seals the through-slot, forming a physical isolation barrier, effectively preventing external foreign objects from entering the second installation area, thereby ensuring the operational safety of the internal components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a cross-sectional view of the internal structure of the present invention.

[0017] Figure 3 This is a schematic diagram of the positional structure of the assembly components in this invention.

[0018] Figure 4 This is a diagram showing the connection structure of the assembled components in this invention.

[0019] Figure 5 This is a schematic diagram of the location and structure of the unlocking component in this invention.

[0020] Figure 6 This is a diagram showing the connection structure of the unlocking component in this invention.

[0021] Figure 7 This is a schematic diagram showing the position and structure of the retracting component in this invention.

[0022] Figure 8This is a diagram showing the connection structure of the retractable component in this invention.

[0023] Figure 9 This is a schematic diagram of the location structure of the enclosed component in this invention.

[0024] Figure 10 This is a schematic diagram of the connection structure of the enclosed component in this invention.

[0025] Figure 11 This is a schematic diagram of the connection structure after the closed component changes state in this invention.

[0026] In the above attached diagrams: 101: Housing, 102: First mounting area, 103: Second mounting area, 201: Mounting plate, 202: Return torsion spring, 203: Insert sleeve, 204: Mounting cylinder, 205: Shaft, 206: First return spring, 207: Corrugated cylinder, 208: Inlet hole, 209: Guide shaft, 210: Guide groove, 211: Concave-convex ring, 212: First inclined control surface, 213: Second return spring, 301: Mounting bushing, 302: First threaded rod, 303: 304: Guide ring; 305: Connecting block; 306: Annular worm gear; 307: Worm section; 308: First knob; 401: Mounting bracket; 402: Control plate; 403: Second inclined control surface; 404: Support plate; 405: Through groove; 406: Second threaded rod; 407: Second knob; 501: Guide plate; 502: Moving shaft; 503: Connecting plate; 504: Guide frame; 505: Assembly plate; 506: Closing block; 507: Toothed plate; 508: Gear. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Example: A modular, quickly assembled metering box, see reference. Figures 1-2 A modular metering box that can be quickly assembled includes: a first installation area 102 and a second installation area 103 respectively provided on both sides of the box body 101. The first installation area 102 is located on the right side of the box body 101, and the second installation area 103 is located on the left side of the box body 101. When the two boxes 101 are placed side by side, the first installation area 102 of one box body 101 will be adjacent to the second installation area 103 of the other box body 101.

[0029] See Figures 2-4The metering box also includes: an assembly assembly disposed between the first installation area 102 and the second installation area 103, used to assemble and fix the box body 101. The assembly assembly is arranged in three layers along the vertical direction to enhance the force balance in the vertical direction. Each layer of the assembly assembly is arranged in two sets along the front-back direction to improve the force stability in the front-back direction. Each set of assembly assemblies includes: a plug 203 disposed in the second installation area 103, with a ring of access holes 208 arranged in a circumferential array at equal angles around its outer periphery; and a fixedly installed in the first installation area 102. When assembling the housing 101, the control insert 203 is inserted into the mounting cylinder 204 through the housing 101 for assembly and fixation. A ring of shafts 205 is slidably mounted on the mounting cylinder 204. The shafts 205 are arranged in an array at equal angles around the circumference of the mounting cylinder 204. When the insert 203 is inserted into the mounting cylinder 204, the position of each shaft 205 will correspond one-to-one with the position of each access hole 208 on the mounting cylinder 204. After the shaft 205 is inserted into the access hole 208, it will lock the relative position between the insert 203 and the mounting cylinder 204. A first return spring 206 is fixedly installed between the shaft 205 and the mounting cylinder 204. The first return spring 206 is sleeved on the shaft 205 to provide stable guidance. A corrugated cylinder 207 is rotatably installed on the mounting cylinder 204, and its cylinder wall has a spiral guide groove 210. A guide shaft 209 is fixedly installed on the insert cylinder 203. During the process of inserting the insert cylinder 203 into the mounting cylinder 204, the guide shaft 209 will cooperate with the guide groove 210 to drive the corrugated cylinder 207 to rotate. A concave-convex ring 211 is slidably installed on the mounting cylinder 204. It will contact the corrugated cylinder 207. The inner surface of the concave-convex ring 211 is provided with a first inclined control surface 212 for contacting each shaft 205. Through the first inclined control surface 212, the axial displacement of the concave-convex ring 211 will compress the radial displacement of the shaft 205. The second return spring 213 is fixedly installed between the mounting cylinder 204 and the concave-convex ring 211. The second return spring 213 is sleeved on the outside of the mounting cylinder 204. When the corrugated cylinder 207 rotates, it will cooperate with the second return spring 213 through its corrugated surface to realize the return movement of the concave-convex ring 211.

[0030] When it is necessary to expand the capacity of this metering box, it is done by adding a box body 101 and splicing it with the existing box body 101. Specifically, the two box bodies 101 are arranged side by side, so that the insert 203 of one box body 101 passes through the mounting cylinder 204 of the other box body 101. During the relative movement of the insert 203 with respect to the mounting cylinder 204, the guide shaft 209 will move to cooperate with the guide groove 210, thereby rotating the bellows 207. When the bellows 207 rotates, its corrugated surface will apply an axial force to the concave-convex ring 211, causing the concave-convex ring 211 to be axially displaced along the mounting cylinder 204 and compressing the second return spring 213. During this stage, the first inclined control surface 212 on the concave-convex ring 211 will disengage from the shaft 205, and the first return spring 206 will recover its deformation from the compressed state, releasing elastic potential energy to push the shaft 205 to move radially outward along the mounting cylinder 204. The first half of the guide groove 210 corresponds to the guide shaft 209. When the guide shaft 209 enters the second half of the guide groove 210, the corrugated surface of the bellows 207 stops pressing the concave-convex ring 211. Then the second return spring 213 can reset the concave-convex ring 211 to reverse displacement. At this time, the first inclined control surface 212 of the concave-convex ring 211 will press the shaft 205 and control it to move into the mounting cylinder 204. At this stage, the access hole 208 on the insert cylinder 203 moves to the position corresponding to the shaft 205. Then the shaft 205 is inserted into the access hole 208, realizing the mechanical interlock between the shaft 205 and the mounting cylinder 204. In this locked state, there is no relative displacement between the shaft 205 and the mounting cylinder 204 and the bellows 207, so that the bellows 207 stops rotating and the concave-convex ring 211 remains stationary, thereby forming a stable self-locking mechanism for the assembled components, and finally ensuring the structural stability of the assembly between the housings 101.

[0031] See Figure 1 , Figure 2 , Figure 5 and Figure 6The metering box also includes: an unlocking component disposed in the first installation area 102, used to unlock the assembly and fixing function of the assembly components on the box body 101. The unlocking component includes: a three-layer mounting bushing 301 fixedly installed in the first installation area 102, the three layers of which are arranged in a one-to-one correspondence with the positions of the three-layer assembly components; a first threaded rod 302 rotatably installed on each layer of mounting bushing 301; a connecting block 304 fixedly installed between the concave and convex rings 211 of the two sets of assembly components in each layer, with each layer of connecting block 304 passing through the first threaded rod 302 at the corresponding position; and a guide slidably installed on each layer of mounting bushing 301. The guide ring 303 and the three-layer guide ring 303 are respectively threadedly connected to the three-layer first threaded rod 302 and respectively contact the three-layer connecting block 304. The displacement of the guide ring 303 will push the connecting block 304 to move the concave and convex ring 211. The annular worm gear 305 is fixedly installed at the end of each layer of the first threaded rod 302. The control rod 306 is rotatably installed in the first installation area 102. The three-layer worm gear section 307 is fixedly installed on the control rod 306, which respectively meshes with the three-layer annular worm gear 305. The first knob 308 is fixedly installed on the top of the control rod 306 and exposed in the housing 101 for external operation control.

[0032] When the assembled components are locked and the housing 101 needs to be disassembled, rotating the first knob 308 drives the control lever 306 to rotate. The worm gear segment 307 on the lever then drives the annular worm wheel 305 to rotate, causing the first threaded rod 302 to rotate forward. The first threaded rod 302 then drives the guide ring 303 to move axially, causing it to push the connecting block 304 and even the concave-convex ring 211 to move axially. The second return spring 213 is compressed, causing the concave-convex ring 211 to disengage from the shaft 205. The first return spring 206 releases its elastic potential energy, pushing the shaft 205 out of the insertion hole 208 of the insert 203. The mechanical unlocking between the mounting cylinder 204 and the insertion cylinder 203 is achieved, allowing the assembly of the housing 101 to be freely disassembled. Thanks to the self-locking characteristics of the annular worm gear 305 and the worm pair, the concave-convex ring 211 can maintain its current position after displacement, eliminating the need for the operator to continuously maintain the rotation of the first knob 308, thus improving the ease of operation of this metering box. Finally, when it is necessary to restore the locking function of the assembled components, the first knob 308 is rotated in the opposite direction to reset the guide ring 303, and the second reset spring 213 then pushes the concave-convex ring 211 and the connecting block 304 back to their initial positions, thereby restoring the normal function of the concave-convex ring 211.

[0033] See Figure 7 Each assembly component also includes: a mounting plate 201 fixedly installed in the second mounting area 103, on which the insert 203 is rotatably mounted; and a reset torsion spring 202 fixedly installed between the insert 203 and the mounting plate 201, which causes the insert 203 to be in the unfolded state in its natural state. See Figure 1 , Figure 2 , Figure 7 and Figure 8 The outer wall of the second installation area 103 is provided with a through groove 405, which has three layers and two sets per layer, correspondingly providing movement space for the rotation and unfolding of each insert 203; the metering box also includes: a folding assembly disposed in the second installation area 103, which is used to fold the insert 203. The folding assembly includes: a mounting frame 401 fixedly installed in the second installation area 103; a control plate 402 slidably installed on the mounting frame 401, which moves in the vertical direction, and the control plate 402 is provided with three layers and two sets of second inclined control surfaces 40 3. The positions of each second inclined control surface 403 correspond to the positions of each insert 203; the abutment plate 404 is fixedly installed on the control plate 402, and the abutment plate 404 has three layers, with two sets in each layer, and each abutment plate 404 is correspondingly located below each second inclined control surface 403; the second threaded rod 406 is rotatably installed on the upper part of the second installation area 103, and the second threaded rod 406 is threadedly connected to the control plate 402; the second knob 407 is fixedly installed on the top of the second threaded rod 406 and exposed in the housing 101 for external operation control.

[0034] To improve the structural safety of the insert 203 and prevent it from being exposed to the outside of the housing 101 for extended periods, it is designed as a foldable structure. A folding mechanism controls the folding of the insert 203. In its natural state, the elastic force of the return torsion spring 202 keeps the insert 203 in its unfolded state, extending it to the outside of the second mounting area 103 of the housing 101. Simultaneously, the bottom of the insert 203 is supported by the abutment plate 404 to ensure its stability during use. When the housing 101 is in its outermost position in a side-by-side arrangement, since it does not need to dock with adjacent housings 101, the insert 203 needs to be folded for storage to reduce the risk of external damage. This is achieved by rotating the second knob 407. The second threaded rod 406 rotates, causing the control plate 402 to move downwards, so that its second inclined control surface 403 contacts the end of the insert 203 and applies pressure, squeezing the insert 203 from the through slot 405 into the second mounting area 103, realizing structural folding and storage. At this time, the reset torsion spring 202 is twisted and stores energy. When it is necessary to unfold the insert 203 again, the second knob 407 is rotated in the opposite direction to move the control plate 402 upwards and reset it. Its second inclined control surface 403 disengages from the insert 203, and the reset torsion spring 202 releases the stored energy, pushing the insert 203 back to the unfolded state and unfolding it again to the outside of the second mounting area 103, preparing for the subsequent splicing of the box 101.

[0035] See Figure 2 , Figure 9 , Figure 10 and Figure 11The metering box also includes a three-layer sealing assembly disposed in the second installation area 103, used to correspondingly seal each through slot 405 when the insert 203 is in the folded state to prevent foreign objects from entering. The sealing assembly includes: a guide plate 501 fixedly installed in the second installation area 103, which is correspondingly disposed below the two through slots 405 on the same layer, and the guide plate 501 has a 7-shaped groove; a moving shaft 502 slidably installed in the groove of the guide plate 501; a connecting plate 503 rotatably installed on the moving shaft 502; and a connecting plate 503 fixedly installed in the second installation area. The guide frame 504 is located within the second mounting area 103; the composite plate 505 is slidably mounted on the guide frame 504 and moves vertically thereafter, and the composite plate 505 is rotatably connected to one end of the connecting plate 503; two sealing blocks 506 are rotatably mounted on the other end of the connecting plate 503 and are used to seal the through groove 405; toothed plates 507 are fixedly mounted on the control plate 402 and the composite plate 505 respectively, and the teeth of the two toothed plates 507 are arranged in opposite directions; and a gear 508 is rotatably mounted in the second mounting area 103, and the toothed plates 507 on both sides mesh with the gear 508 simultaneously.

[0036] During the process of the control plate 402 moving down to fold the insert 203, its displacement is achieved through the gear 508 and the toothed plates 507 on both sides to achieve reverse transmission, controlling the upward displacement of the mating plate 505. During this process, the channel of the guide plate 501 guides and restricts the moving shaft 502, so that the moving shaft 502 and the connecting plate 503 first move upward synchronously with the mating plate 505. When the moving shaft 502 moves to the turning area of ​​the channel, the connecting plate 503 will rotate, causing its end to deflect to the left, and the left-moving sealing block 506 will move. That is, the sealing block 506 will eventually move in a figure-7 trajectory, first moving vertically upward to the height position flush with the through groove 405, and then moving horizontally to accurately embed into the through groove 405 to achieve complete sealing. In the folded state of the insert 203, the sealing block 506 forms a physical isolation of the through groove 405, effectively preventing external foreign objects from entering the interior of the second installation area 103, improving the working environment safety of each component in the second installation area 103, and ensuring the long-term operational stability of the relevant components.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A modular, rapidly assembleable metering box, characterized in that, include: A housing (101) has a first mounting area (102) and a second mounting area (103) on its two sides respectively. An assembly component is provided between the first mounting area (102) and the second mounting area (103) for assembling and fixing the housing (101). The assembly component includes: a plug cylinder (203) provided in the second mounting area (103) with a ring of access holes (208) arranged in a circumferential array at equal angles; a mounting cylinder (204) fixedly connected in the first mounting area (102); a shaft (205) slidably connected to the mounting cylinder (204) with the shaft (205) arranged in a circumferential array at equal angles along the mounting cylinder (204); and a fixed connection between the shaft (205) and the mounting cylinder (204). The assembly consists of a first return spring (206) between the mounting cylinder (204) and the corrugated cylinder (207) rotatably connected to the mounting cylinder (204), with a spiral guide groove (210) on its wall; a guide shaft (209) fixedly connected to the insert cylinder (203), the guide shaft (209) engaging with the guide groove (210); a concave-convex ring (211) slidably connected to the mounting cylinder (204), which can contact the corrugated surface of the corrugated cylinder (207), and a first inclined control surface (212) on the inner surface of the concave-convex ring (211) for contacting each shaft (205); a second return spring (213) fixedly connected between the mounting cylinder (204) and the concave-convex ring (211); and the assembly components are arranged in layers along the vertical direction, with at least one layer of the assembly. The metering box has two layers, and each layer has at least two sets of assembly components arranged along the front-to-back direction; the metering box also includes: an unlocking component set in the first installation area (102) for unlocking the assembly components from fixing the box body (101), the unlocking component includes: an installation bushing (301) fixedly connected in the first installation area (102), the number of layers of the installation bushing (301) is the same as the number of layers of the assembly components, and the arrangement position corresponds one-to-one with the position of each layer of assembly components; a first threaded rod (302) rotatably connected to the installation bushing (301) of each layer; and a connecting block (304) fixedly connected between the concave and convex rings (211) of each group of assembly components in the same layer, the connecting block (304) of each layer passing through the first threaded rod corresponding to the position ( 302); guide rings (303) slidably connected to the mounting bushings (301) of each layer, each layer guide ring (303) being threadedly connected to the first threaded rod (302) of each layer and correspondingly contacting the connecting blocks (304) of each layer; annular worm gears (305) fixedly connected to the ends of the first threaded rods (302) of each layer; control rods (306) rotatably connected to the first mounting area (102); worm segments (307) fixedly connected to the control rods (306), the number of layers of worm segments (307) being consistent with the number of layers of the assembly, each layer correspondingly meshing with the annular worm gears (305) of each layer; and a first knob (308) fixedly connected to the top of the control rods (306) and exposed in the housing (101).

2. The modular, rapidly assembleable metering box according to claim 1, characterized in that, Each assembly component also includes: a mounting plate (201) fixedly connected in the second mounting area (103), on which the insert (203) is rotatably connected; and a reset torsion spring (202) fixedly connected between the insert (203) and the mounting plate (201), which causes the insert (203) to be in the unfolded state in its natural state.

3. A modular, rapidly assembleable metering box according to claim 2, characterized in that, The outer wall of the second installation area (103) is provided with a through groove (405), which is set according to the number and position of each insert (203); the metering box also includes: a folding assembly set in the second installation area (103) for folding the insert (203) in the unfolded state. The folding assembly includes: a mounting frame (401) fixedly connected in the second installation area (103); a control plate (402) slidably connected to the mounting frame (401), the control plate (402) is provided with a second inclined control surface (403), which is set according to the number and position of each insert (203); a second threaded rod (406) rotatably connected to the upper part of the second installation area (103), the second threaded rod (406) being threadedly connected to the control plate (402); and a second knob (407) fixedly connected to the top of the second threaded rod (406) and exposed in the box body (101) for external operation control.

4. A modular, rapidly assembleable metering box according to claim 3, characterized in that, The retraction assembly also includes a stop plate (404) fixedly connected to the control panel (402), which is set according to the number and position of each insert (203), and the stop plate (404) is located below each second inclined control surface (403).

5. A modular, rapidly assembleable metering box according to claim 4, characterized in that, The metering box further includes: a sealing component disposed in the second installation area (103), the number of layers of the sealing component being consistent with the number of layers of the assembly component, used to correspondingly seal each through slot (405) when the insert (203) is in the folded state, the sealing component including: a sealing block (506) disposed in the second installation area (103) for sealing the through slot (405).

6. A modular, rapidly assembleable metering box according to claim 5, characterized in that, The enclosure assembly further includes: a guide plate (501) fixedly connected to the second mounting area (103), located below the through groove (405), with a 7-shaped groove on the guide plate (501); a movable shaft (502) slidably connected to the groove of the guide plate (501); a connecting plate (503) rotatably connected to the movable shaft (502); a guide frame (504) fixedly connected to the second mounting area (103); and a connecting plate (503) slidably connected to the guide frame (504). The assembly plate (505) is rotatably connected to one end of the connecting plate (503), and the closing block (506) is rotatably connected to the other end of the connecting plate (503); the toothed plates (507) are respectively fixedly connected to the control plate (402) and the assembly plate (505), and the teeth of the two toothed plates (507) are set in opposite directions; the gear (508) is rotatably connected to the second mounting area (103), and the two toothed plates (507) mesh with the gear (508) at the same time.

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