Sand storage bag for ceramsite proppant

By introducing vibration support devices, clamping components and support components into the sand storage bag for ceramic proppant, the problems of easy breakage, wear and large space occupation during shipping and storage are solved, and the ton bags are realized Quick folding, compression and convenient storage reduce wear risk.

CN222203553UActive Publication Date: 2024-12-20ZHENGZHOU XINYUAN WEAR RESISTANT MATERIAL CO LTD
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Patent Information

Application Number
CN202421125945.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-21
Publication Date
2024-12-20
Estimated Expiration
2034-05-21

AI Technical Summary

Technical Problem

Tons of existing ceram proppant bags are easily broken, bulged, worn during shipping and storage, and occupy a large space, making it difficult to store in a small space.

Method used

A sand storage bag for ceramic proppant is designed, including the main body and a suspender of the bag. It is equipped with a vibration support device, a clamping component and a support component. The vibration support device drives the folding and compression of the bag, and the clamping component is quickly connected. The support assembly provides a transverse support structure that reduces wear and space consumption.

Benefits of technology

It realizes rapid folding and compression of ton bags, reduces storage space, improves storage convenience, and reduces contact wear through support structures and extends service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sand storage bag for a ceramsite proppant. The sand storage bag comprises a ton bag main body, a hanging belt and a vibration supporting device, the vibration supporting device is arranged, namely, under transmission of the first connecting rod and the second connecting rod, the first vertical plate and the second vertical plate can drive the ton bag body to be folded and compressed, the overall size is reduced, and therefore the advantages that the storage space is reduced, and convenient and fast storage is matched are achieved; a pressing plate is arranged, namely the pressing plate can abut against and be matched with a limiting plate under transmission of a screw to be connected with the upper end of the ton bag body in a clamped mode, so that the vibration supporting device is rapidly connected with the outer side of the ton bag body, and it is guaranteed that follow-up folding and collecting activities are convenient and rapid; and a transverse supporting structure is formed to assist in supporting the ton bag main body, so that the advantages that the ton bag main body assists in carrying, supporting and matching, and the contact abrasion phenomenon is reduced are achieved.
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Description

Technical Field

[0001] The utility model relates to the relevant field of ceramsite proppant production, in particular to a sand storage bag for ceramsite proppant. Background Art

[0002] Proppant refers to natural sand or artificial high-strength ceramsite particles with a certain particle size and gradation. Ceramsite proppants are made of bauxite as raw material, through powder granulation and sintering. They have the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high conductivity, low density, low breakage rate, etc., and are the most widely used;

[0003] Nowadays, when packaging and shipping finished ceramsite proppant products, sand storage bags are needed. Most of the sand storage bags used today are ton bags to achieve shipping coordination. Ton bags are a flexible transportation packaging container with the advantages of moisture-proof, dust-proof, radiation-resistant, firm and safe, and have sufficient structural strength. Since container bags are easy to load and unload, and the loading and unloading efficiency is significantly improved, they have developed rapidly in recent years. Container bags are generally made of polyester fibers such as polypropylene and polyethylene.

[0004] The existing application number is CN202122950984.8, which is a sand storage bag for ceramsite proppants, comprising a bag, a base and a support frame. The bag is a nylon bag body consisting of a bag body, a feed pipe and a discharge pipe. Four corners of the top of the bag body are respectively provided with hanging rings, the center of the outer top surface of the bag body is connected with a feed pipe, the center of the outer bottom surface of the bag body is connected with a discharge pipe, the upper surface of the base is connected to the outer bottom surface of the bag body, and the support frame comprises a support plate and a support rod. The center of the support plate is provided with a square through hole, and the support plate is sleeved on the outer side of the upper outer side surface of the bag body through the square through hole. The support rod comprises a left support rod, a right support rod, a front support rod and a rear support rod, and the left support rod, the right support rod, the front support rod and the rear support rod are connected between the support plate and the base. The purpose is to solve the problem that when the ton bag filled with ceramsite proppant finished products is stored or transported in the existing prior art, the bag body is easily broken, bulged, the bottom of the ton bag is easily worn, and the placement is unstable;

[0005] The above-mentioned existing ton bags are protected by providing support plates, left support rods, right support rods, front support rods and rear support rods to protect the outer side of the ton bags, which reduces the occurrence of collision, breakage or wear of the ton bags. However, after subsequent use, they can be stacked up and down for storage, but because the frame formed by the support plates, left support rods, right support rods, front support rods and rear support rods is relatively large, the overall storage space is large, which is not conducive to subsequent storage in a small space. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a sand storage bag for ceramsite proppant.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sand storage bag for expanded clay proppant, comprising a ton bag main body and a sling, the ton bag main body is connected to the sling by sewing at the four corners of the upper end thereof, and also comprises a vibration support device arranged on the outer side of the ton bag main body, the vibration support device comprises a first vertical plate arranged on the left and right sides of the ton bag main body, a connecting groove opened at the lower end of the first vertical plate, a first connecting rod arranged at the lower end of the first vertical plate and transmission connected to the connecting groove, a second connecting rod rotatably connected to the upper end of the first vertical plate and rotatably connected to the first connecting rod, a second vertical plate connected to the rear ends of at least two groups of the first connecting rod and the second connecting rod, a clamping assembly correspondingly arranged at the upper ends of the first vertical plate and the second vertical plate, and a support assembly installed at the lower ends of the first vertical plate and the second vertical plate, the first vertical plate and the second vertical plate are respectively connected to the outer side of the upper end of the ton bag main body through the clamping assemblies arranged at the top.

[0008] Preferably, the clamping assembly includes a fixing plate respectively fixed to the upper ends of the first vertical plate and the second vertical plate, a limiting plate arranged at the lower end of the fixing plate, a screw rod rotatably connected to the middle part of the fixing plate, a pressing plate threadedly connected to the outside of the screw rod and plugged into the inside of the fixing plate, and a serrated block arranged at the lower end of the pressing plate.

[0009] Preferably, the supporting assembly includes a first supporting plate and a second supporting plate rotatably connected to the lower ends of the first vertical plate and the second vertical plate on both sides, a second magnetic strip disposed inside the first supporting plate and the second supporting plate, a limiting groove opened on the right side of the first supporting plate, a protrusion fixed on the left side of the limiting groove, a plug-in plate plugged into the left side of the second supporting plate, a push block fixed at the lower end of the plug-in plate, and a compression spring built into the left side of the second supporting plate and against the right side of the plug-in plate.

[0010] Preferably, the first vertical plate and the second vertical plate further include a first magnetic strip installed in the middle of one opposite surface, and the positive and negative poles of the first magnetic strip on both sides are arranged in opposite directions.

[0011] Preferably, the first vertical plate, connecting groove, first connecting rod, second connecting rod, second vertical plate and first magnetic strip are all symmetrically arranged along the left and right sides of the ton bag body, and a long groove consistent with the connecting groove arranged at the lower end of the first vertical plate is correspondingly opened at the lower end of the second vertical plate.

[0012] Preferably, the limiting plate and the pressing plate are respectively located inside and outside the ton bag body, and the positions of the limiting plate and the pressing plate correspond to each other laterally.

[0013] Preferably, the first support plate and the second support plate are transversely combined to form a transverse support strip, and the lower end surfaces of the first support plate and the second support plate are in the same horizontal plane as the bottom of the first vertical plate or the second vertical plate.

[0014] Preferably, the upper end of the protrusion is combined with the limiting groove to form a limiting clamping joint, and the outer surface of the protrusion is polished and smooth without barbs.

[0015] Beneficial effects of the utility model:

[0016] Advantage 1: The utility model is provided with a vibration support device, that is, under the transmission of the first connecting rod and the second connecting rod, the first vertical plate and the second vertical plate can drive the ton bag body to fold and compress, so as to reduce the overall volume, thereby achieving the advantages of reducing the storage space and convenient storage.

[0017] Advantage 2: The utility model is provided with a clamping assembly, that is, the pressure plate can be driven by a screw rod to cooperate with the limit plate to clamp and connect with the upper end of the ton bag body, so that the vibration support device can be quickly connected to the outer side of the ton bag body, ensuring that the subsequent folding and collecting activities are convenient and fast.

[0018] Advantage 3: The utility model provides a support assembly, namely a first support plate and a second support plate, which can form a transverse support structure when the plug-in plate is plugged and locked with the limit groove to assist in supporting the main body of the ton bag, thereby achieving the advantages of auxiliary support and cooperation of the main body of the ton bag and reducing contact wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the vibration support device of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the support assembly of the utility model;

[0023] Figure 5 It is a schematic diagram of a front view cross-section of the support assembly combination of the utility model.

[0024] Among them: ton bag body-1, sling-2, vibration support device-3, first vertical plate-31, connecting groove-32, first connecting rod-33, second connecting rod-34, second vertical plate-35, first magnetic strip-3a, clamping assembly-36, fixing plate-361, limiting plate-362, screw-363, pressure plate-364, sawtooth block-365, support assembly-37, first support plate-371, second support plate-372, second magnetic strip-373, limiting groove-374, protrusion-375, plug-in plate-376, push block-377, compression spring-378. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0026] See also Figure 1 The utility model provides a sand storage bag for ceramsite proppant, comprising a ton bag body 1 and a sling 2, wherein the sling 2 is sewn and connected to the four corners of the upper end of the ton bag body 1, and also comprises a vibration support device 3 arranged on the outer side of the ton bag body 1.

[0027] See also Figure 2 The vibration support device 3 in this embodiment includes a first vertical plate 31 vertically arranged on the left and right sides of the front end of the ton bag body 1, a corresponding connecting groove 32 vertically opened at the lower end of the first vertical plate 31, so as to facilitate the smooth folding and collecting transmission, a first connecting rod 33 arranged on the inner side of the lower end of the first vertical plate 31 and connected to the connecting groove 32, a second connecting rod 34 rotatably connected to the upper end of the first vertical plate 31, and the middle part of the second connecting rod 34 is rotatably connected to the first connecting rod 33, and secondly, at least two groups of the first connecting rod 33 and the second connecting rod 34 are provided, and the head and tail ends of the two groups of the first connecting rod 33 and the second connecting rod 34 are correspondingly rotatably connected, and connected to at least two groups of the first connecting rod 33 and the second connecting rod 34. The second vertical plate 35 at the rear end of the connecting rod 34 is symmetrically arranged at the left and right ends of the rear side of the ton bag body 1 and is arranged opposite to the first vertical plate 31 in front and back. The clamping components 36 are correspondingly arranged on the upper ends of the first vertical plate 31 and the second vertical plate 35, so that the first vertical plate 31 and the second vertical plate 35 can be firmly clamped and connected with the four sides of the upper end of the ton bag body 1 by cooperating with the clamping components 36. The supporting components 37 installed at the lower ends of the first vertical plate 31 and the second vertical plate 35 can realize auxiliary support cooperation and reduce the occurrence of wear and tear caused by direct contact between the ton bag body 1 and the ground. The first vertical plate 31 and the second vertical plate 35 are connected to the outer side of the upper end of the ton bag body 1 through the clamping components 36 arranged on the top.

[0028] Among them, the first vertical plate 31 and the second vertical plate 35 also include a first magnetic strip 3a installed in the middle of the opposite side, and the positive and negative directions of the first magnetic strips 3a on both sides are set in opposite states, ensuring that the first vertical plate 31 and the second vertical plate 35 cooperate with the first magnetic strip 3a installed correspondingly in the middle to achieve folding magnetic locking cooperation; the first vertical plate 31, the connecting groove 32, the first connecting rod 33, the second connecting rod 34, the second vertical plate 35 and the first magnetic strip 3a are all symmetrically arranged along the left and right sides of the ton bag body 1, and the lower end of the second vertical plate 35 is correspondingly provided with a long groove consistent with the connecting groove 32 set at the lower end of the first vertical plate 31, ensuring that the first vertical plate 31 and the second vertical plate 35 can be stably connected to the first connecting rod 33 and the second connecting rod 34 through transmission, ensuring the stability and smoothness of the folding activity.

[0029] See also Figure 3The clamping assembly 36 in this embodiment includes a fixing plate 361 fixedly connected to the upper ends of the first vertical plate 31 and the second vertical plate 35 to achieve support cooperation, a limiting plate 362 fixedly connected to the lower end of the fixing plate 361 to achieve limiting cooperation, a screw rod 363 rotatably connected to the middle part of the fixing plate 361, a pressing plate 364 threadedly connected to the outer side of the screw rod 363 and plugged into the inside of the fixing plate 361, so as to cooperate with the threaded transmission of the screw rod 363 to achieve lateral movement, clamping or unlocking of the pressing plate 364, and a serrated block 365 correspondingly arranged at the lower end of the pressing plate 364, so as to cooperate with the serrated effect to improve the clamping firmness with the outer side of the ton bag body 1.

[0030] Specifically, the limit plate 362 and the pressure plate 364 are respectively located on the inner and outer sides of the ton bag body 1, and the positions of the limit plate 362 and the pressure plate 364 correspond horizontally, ensuring that the limit plate 362 and the pressure plate 364 cooperate with each other to stably clamp and connect with the outer side of the ton bag body 1, thereby ensuring the rapid folding of the subsequent ton bag body 1.

[0031] See also Figure 4-5 The support assembly 37 in this embodiment includes a first support plate 371 and a second support plate 372 which are rotatably connected to the lower ends of the first vertical plate 31 and the second vertical plate 35 on both sides, and the first support plate 371 and the second support plate 372 can rotate in opposite directions to vertically overlap with the first vertical plate 31 and the second vertical plate 35 to achieve rapid folding and collection, and a second magnetic strip 373 is placed inside the first support plate 371 and the second support plate 372 to cooperate with the second magnetic strip 373 to achieve magnetic attraction of the folded first support plate 371 and the second support plate 372. The locking fit is a limit groove 374 provided on the right side of the first support plate 371, a protrusion 375 fixedly connected to the left side of the limit groove 374 for extrusion fit, a plug-in board 376 laterally plugged into the left side of the second support plate 372 for telescopic plug-in and locking fit, and the left end of the plug-in board 376 is arranged in an inclined surface shape, a push block 377 fixedly connected to the lower end of the plug-in board 376, a compression spring 378 built into the left side of the second support plate 372 and abutting against the right side of the plug-in board 376, so as to cooperate with the compression spring 378 to realize elastic force to push the plug-in and lock.

[0032] To further illustrate, the first support plate 371 and the second support plate 372 are horizontally combined to form a horizontal support strip, and the lower end surfaces of the first support plate 371 and the second support plate 372 are in the same horizontal plane with the bottom of the first vertical plate 31 or the second vertical plate 35, ensuring that the first support plate 371 and the second support plate 372 achieve stable support and anti-wear cooperation with the first vertical plate 31 or the second vertical plate 35; the upper end of the protrusion 375 is combined with the limiting groove 374 to form a limiting card connection, and the outer surface of the protrusion 375 is overall smooth and has no barbs and is polished, ensuring that the protrusion 375 and the head end of the plug-in board 376 are in smooth contact with each other, reducing the occurrence of plug-in locking jams.

[0033] Here’s how it works:

[0034] When the ceramsite proppant is to be bagged, the ton bag body 1 can be placed at the discharge position to bag the finished ceramsite proppant. After bagging, the ton bag body 1 can be connected to the slings 2 provided at the four corners of the upper end of the ton bag body 1 by a crane or other lifting equipment, so that the ton bag body 1 can be conveniently lifted to the transportation equipment;

[0035] When the use of the ton bag body 1 is completed and the collection activity is required, the first vertical plate 31 and the second vertical plate 35 provided at the left and right ends of the outer side can be pushed at the same time to achieve a relatively close activity. In this way, the first connecting rod 33 and the second connecting rod 34 provided between the first vertical plate 31 and the second vertical plate 35 will cooperate with the connecting groove 32 provided at the lower ends of the first vertical plate 31 and the second vertical plate 35 to achieve the folding and collecting activity. Since the upper ends of the first vertical plate 31 and the second vertical plate 35 are connected to the outer side of the upper end of the ton bag body 1 through the clamping assembly 36, the ton bag body 1 can be folded and collected. Under the folding and collecting transmission of the first vertical plate 31 and the second vertical plate 35, the ton bag body 1 in the unfolded state will be driven to be compressed to reduce the overall volume and realize the reduction of the subsequent storage space. When the first vertical plate 31 and the second vertical plate 35 are in contact with each other, the first magnetic strips 3a respectively arranged on the first vertical plate 31 and the second vertical plate 35 will be matched to realize the magnetic locking activity to ensure the firmness of the folding and collecting state. In this way, the ton bag body 1 can be quickly folded, compressed and collected, achieving the advantages of reducing the storage space and convenient storage.

[0036] When the vibration support device 3 drives the ton bag body 1 to be in the unfolded state, the support components 37 provided at the lower ends of the first vertical plate 31 and the second vertical plate 35 can be respectively moved to rotate the first support plate 371 and the second support plate 372 provided inside the support component 37 to form a lateral support state. During the formation, the plug-in plate 376 provided on the left side of the second support plate 372 can be pre-moved into the limiting groove 374 provided on the right side of the first support plate 371, and abut against the protrusion 375 provided on the left side of the limiting groove 374 to achieve the overall squeezing of the plug-in plate 376. In this way, the plug-in plate 376 can be moved into the left side of the second support plate 372 to compress the compression spring 378 provided on the left side of the second support plate 372. When the plug-in plate 376 passes through the protrusion 375 and is horizontally plugged and locked with the limiting groove 374 by the rebound force of the compression spring 378, the first support plate 371 and the second support plate 372 can be completed. The second support plate 372 is in a lateral support state. When the bottom support assembly 37 of the second vertical plate 35 completes the support state, a stable support cooperation at the lower end of the ton bag body 1 can be achieved to reduce the contact wear between the ton bag body 1 and the ground, which greatly reduces the service life of the ton bag body 1. Secondly, when the lateral support state is released, the push block 377 at the lower end of the plug-in plate 376 is pushed horizontally to move the plug-in plate 376 out of the internal clamping end of the limit groove 374. In this way, the first support plate 371 and the second support plate 372 can be unlocked to be bent back to the vertical state, and the second magnetic strip 373 provided in the middle of the first support plate 371 or the second support plate 372 is magnetically attracted to the first vertical plate 31 or the second vertical plate 35 to ensure that the first support plate 371 or the second support plate 372 is in a firm state after being collected, thereby achieving the advantages of auxiliary support cooperation of the ton bag body 1 and reducing contact wear.

[0037] When the first vertical plate 31 or the second vertical plate 35 is clamped and connected with the ton bag body 1, the clamping position of the ton bag body 1 needs to be moved between the limit plate 362 and the pressure plate 364, and by rotating the screw 363 provided in the middle of the fixed plate 361, the internal sliding insertion pressure plate 364 on one side of the fixed plate 361 will be driven to move the pressure plate 364 toward the limit plate 362, thereby achieving a clamping and fastening connection with the outer side of the upper end of the ton bag body 1, and cooperating with the serrated block 365 provided on the inner side of the lower end of the pressure plate 364 to improve the clamping tightness and reduce looseness.

[0038] The utility model provides a sand storage bag for ceramsite proppant, which is provided with a vibration support device 3, that is, under the transmission of the first connecting rod 33 and the second connecting rod 34, the first vertical plate 31 and the second vertical plate 35 can drive the ton bag body 1 to fold and compress, so as to reduce the overall volume, thereby achieving the advantages of reduced storage space and convenient storage, and a clamping assembly 36 is provided, that is, a pressing plate 364 can be driven by a screw rod 363 to cooperate with a limit plate 362 to be clamped and connected with the upper end of the ton bag body 1, so that the vibration support device 3 is quickly connected to the outer side of the ton bag body 1, ensuring the convenience and speed of subsequent folding and collecting activities, and a support assembly 37 is provided, that is, a first support plate 371 and a second support plate 372 can be plugged and locked with the plug plate 376 and the limit groove 374 to form a transverse support structure to assist in supporting the ton bag body 1, thereby achieving the advantages of auxiliary support and cooperation of the ton bag body 1 and reducing contact wear.

[0039] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sand storage bag for ceramsite proppant, comprising a ton bag body (1) and a sling (2), wherein the sling (2) is sewn and connected to the four corners of the upper end of the ton bag body (1); Features: The invention also comprises a vibration support device (3) arranged on the outer side of the ton bag body (1), wherein the vibration support device (3) comprises a first vertical plate (31) arranged on the left and right sides of the ton bag body (1), a connecting groove (32) opened at the lower end of the first vertical plate (31), a first connecting rod (33) arranged at the lower end of the first vertical plate (31) and drivingly connected to the connecting groove (32), a second connecting rod (34) rotatably connected to the upper end of the first vertical plate (31) and rotatably connected to the first connecting rod (33), a second vertical plate (35) connected to the rear ends of at least two groups of the first connecting rod (33) and the second connecting rod (34), a clamping assembly (36) arranged at the upper ends of the first vertical plate (31) and the second vertical plate (35) respectively, and a supporting assembly (37) installed at the lower ends of the first vertical plate (31) and the second vertical plate (35), wherein the first vertical plate (31) and the second vertical plate (35) are respectively connected to the outer side of the upper end of the ton bag body (1) through the clamping assembly (36) arranged at the top.

2. A sand storage bag for ceramsite proppant according to claim 1, characterized in that: The clamping assembly (36) comprises a fixing plate (361) fixedly mounted on the upper ends of the first vertical plate (31) and the second vertical plate (35), respectively, a limiting plate (362) mounted on the lower end of the fixing plate (361), a screw rod (363) rotatably connected to the middle of the fixing plate (361), a pressing plate (364) threadedly connected to the outer side of the screw rod (363) and plugged into the interior of the fixing plate (361), and a sawtooth block (365) mounted on the lower end of the pressing plate (364).

3. A sand storage bag for ceramsite proppant according to claim 1, characterized in that: The support assembly (37) comprises a first support plate (371) and a second support plate (372) rotatably connected to the lower ends of the first vertical plate (31) and the second vertical plate (35) on both sides, a second magnetic strip (373) disposed inside the first support plate (371) and the second support plate (372), a limiting groove (374) opened on the right side of the first support plate (371), a protrusion (375) fixedly arranged on the left side of the limiting groove (374), a plug-in plate (376) plugged into the left side of the second support plate (372), a push block (377) fixedly arranged at the lower end of the plug-in plate (376), and a compression spring (378) built into the left side of the second support plate (372) and abutting against the right side of the plug-in plate (376).

4. A sand storage bag for ceramsite proppant according to claim 1, characterized in that: The first vertical plate (31) and the second vertical plate (35) further comprise a first magnetic strip (3a) installed in the middle of one opposite surface, and the positive and negative poles of the first magnetic strip (3a) on both sides are arranged in opposite directions.

5. A sand storage bag for ceramsite proppant according to claim 1, characterized in that: The first vertical plate (31), the connecting groove (32), the first connecting rod (33), the second connecting rod (34), the second vertical plate (35) and the first magnetic strip (3a) are all symmetrically arranged along the left and right sides of the ton bag body (1), and the lower end of the second vertical plate (35) is provided with a long groove that is consistent with the connecting groove (32) provided at the lower end of the first vertical plate (31).

6. A sand storage bag for ceramsite proppant according to claim 2, characterized in that: The limiting plate (362) and the pressing plate (364) are respectively located inside and outside the ton bag body (1), and the positions of the limiting plate (362) and the pressing plate (364) correspond to each other in the transverse direction.

7. A sand storage bag for ceramsite proppant according to claim 3, characterized in that: The first support plate (371) and the second support plate (372) are transversely combined to form a transverse support strip, and the lower end surfaces of the first support plate (371) and the second support plate (372) are in the same horizontal plane as the bottom of the first vertical plate (31) or the second vertical plate (35).

8. A sand storage bag for ceramsite proppant according to claim 3, characterized in that: The upper end of the protrusion (375) is combined with the limiting groove (374) to form a limiting clamping joint, and the outer surface of the protrusion (375) is polished and smooth without barbs.