Dry cement feeding device

Abstract

The utility model relates to the technical field of underground operation equipment in petroleum engineering, in particular to a dry cement throwing device, and aims to solve the problems that the labor intensity is high, the consumed time is long and grouting is not facilitated when dry cement is thrown into a stirring tank. The device comprises a double-opening storage bag, an air control valve and a dust control cylinder, the upper end of the bag body is connected with the air control valve, and the lower end of the bag body is inserted into the dust control cylinder; the bag body is used for storing dry cement, the air control valve is used for supplementing air into the double-opening storage bag, and the dust control cylinder is inserted below the liquid level and receives the dry cement discharged by the bag body. According to the utility model, the bagged dry cement is poured into the double-opening storage bag in advance, is hoisted above the stirring tank by means of tools such as a crane and is poured into the double-opening storage bag for stirring, so that the situation that the bagged dry cement is manually carried above the stirring tank bag by bag and is poured into the stirring tank is avoided, the labor intensity is reduced, and the time for preparing cement paste is shortened; sufficient time is reserved for grouting, and the early setting quality accident risk caused by too long configuration time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole operation equipment in petroleum engineering, in particular to a dry cement feeding device. Background Technique

[0002] At present, in the construction operation of preparing cement slurry with dry cement at the workover site, 50-kilogram bags of dry cement are generally used. For example, in a construction operation of a primary casing in oil well with an inner diameter of 0.124 meters and a cement plug injection of 500 meters, at least 6.04 cubic meters of cement slurry with a density of 1.85 grams per cubic centimeter needs to be prepared (without considering the additional coefficient). The required 50-kilogram bags of dry cement are at least 150 bags, and the preparation and injection work need to be completed within a cement thickening time of less than 90 minutes. Generally, mechanical mixing tanks have been used for mixing at the site, but for feeding dry cement into the mixing tank, four basic operations of manual handling, bag opening, shaking the material, and discarding the bag are still required. Due to the high labor intensity, the labor demand has increased significantly. Taking 150 bags as an example, at least 12 people need to be divided into 2 groups to construct simultaneously, and the time used will not be less than 60 minutes. In this way, the time left for injection is very tight. That is, the existing work of feeding dry cement into the mixing tank has problems of high labor intensity, long time consumption, and being unfavorable for grouting. Content of the Utility Model

[0003] The purpose of the utility model is to provide a dry cement feeding device to solve the problems of high labor intensity, long time consumption, and being unfavorable for grouting in the existing work of feeding dry cement into the mixing tank.

[0004] To solve the above technical problems, the technical solution provided by the utility model lies in:

[0005] A dry cement feeding device, characterized in that it includes a double-port storage bag, an air control valve, and a dust control cylinder;

[0006] The double-port storage bag includes a bag body, the upper end of the bag body is connected to the air control valve, and the lower end is inserted into the dust control cylinder;

[0007] The bag body is used for storing dry cement, the air control valve is used for supplementing air into the double-port storage bag, and the dust control cylinder is inserted below the liquid level and receives the dry cement discharged from the bag body.

[0008] Further, the upper end opening of the bag body is used for connecting with the air control valve, and the lower end opening is used for discharging dry cement.

[0009] Further, the double-port storage bag further includes a sealing component;

[0010] The sealing component includes a fixed belt clip, a movable hole clip, and a conical plug;

[0011] Both ends of the fixed belt clip are connected to the bag body and form a first through hole extending in the vertical direction;

[0012] The movable hole clip is arranged below the fixed belt clip, one end is connected to the bag body, and the other end is provided with a second through hole extending in the horizontal direction;

[0013] After the end of the movable hole clip provided with the second through hole passes through the first through hole, the tapered pin is inserted into the second through hole.

[0014] Further, the sealing assembly further includes a release pull cord and a safety nut. One end of the tapered pin is connected to the release pull cord, and the other end is threadedly connected to the safety nut;

[0015] The diameter of the end of the tapered pin connected to the release pull cord is larger than the diameter of the end connected to the safety nut.

[0016] Further, the sealing assembly further includes a first safety cord and a second safety cord;

[0017] Both ends of the tapered pin are respectively connected to the first safety cord and the second safety cord;

[0018] The ends of the first safety cord and the second safety cord far from the tapered pin are respectively connected to the bag body.

[0019] Further, the double - mouth storage bag further includes a sling for hoisting.

[0020] Further, the air - control valve includes a differential pressure valve, and the differential pressure valve is provided with a valve cavity, a first communication hole, a second communication hole, a sealing ball and a baffle;

[0021] One end of the first communication hole communicates with the valve cavity, and the other end communicates with the outside; one end of the second communication hole communicates with the valve cavity, and the other end communicates with the bag body;

[0022] The sealing ball can fall into the first communication hole to close the first communication hole, and the baffle is used to block the sealing ball from closing the second communication hole.

[0023] Further, the dust - control cylinder includes a cylinder body and a partition net. The partition net is horizontally arranged and installed in the cylinder body;

[0024] The upper end face of the cylinder body is provided with a flanging, and the lower end of the bag body is inserted into the cylinder body.

[0025] Further, the dust - control cylinder further includes a support rod. The support rod is horizontally arranged and connected to the cylinder body, and is used to abut against the top of the mixing tank to support the cylinder body.

[0026] Furthermore, the dust control cylinder also includes a soft cylinder, which is connected to the cylinder body and inserted below the liquid level.

[0027] Based on the above technical solutions, the technical effects that can be achieved by the utility model are:

[0028] The dry cement delivery device provided by the utility model comprises a double-mouth storage bag, an air control valve and a dust control cylinder; the double-mouth storage bag comprises a bag body, the upper end of the bag body is connected with the air control valve, and the lower end of the bag body is inserted into the dust control cylinder; the bag body is used to store dry cement, the air control valve is used to add air to the double-mouth storage bag, and the dust control cylinder is inserted below the liquid level and receives the dry cement discharged from the bag body.

[0029] The dry cement delivery device provided by the utility model is to pour the bagged dry cement into a double-mouth storage bag in advance, hoist it above the mixing tank with the help of a crane or other tools, and pour the dry cement into the mixing tank for mixing. This process can avoid the manual transportation of the bagged dry cement to the top of the mixing tank and pouring it into the mixing tank, thereby reducing the labor intensity and the time for preparing cement slurry, leaving sufficient time for grouting, and avoiding the risk of early setting quality accidents caused by too long preparation time.

[0030] At the same time, the air control valve can add air to the double-mouth storage bag to prevent the negative pressure caused by the discharge of dry cement from affecting the discharge speed of dry cement, further shortening the time for preparing cement slurry. The dust control cylinder avoids the harm to health and environment caused by dust when pouring dry cement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a dry cement delivery device provided in an embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of the differential pressure valve.

[0034] Icons: 200-air control valve; 300-dust control cylinder; 110-bag body; 130-sling; 111-upper open bag; 112-cylindrical bag; 113-lower open bag; 121-fixed belt clamp; 122-movable hole clamp; 123-conical latch; 124-untie rope; 125-safety nut; 126-first safety rope; 127-second safety rope; 210-differential pressure valve; 220-conical hole insert; 211-valve chamber; 212-first connecting hole; 213-second connecting hole; 214-sealing ball; 215-baffle; 310-cylinder body; 320-partition net; 330-pole; 340-flexible cylinder; 311-flange. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] When dry cement is used to prepare cement slurry at the well repair site, 50 kg bags of bagged dry cement are generally used. When the dry cement is delivered into the mixing tank, manual handling, unpacking, shaking and discarding of the bags are required, which is labor-intensive, time-consuming and not conducive to grouting.

[0039] In view of this, the utility model provides a dry cement delivery device, including a double-port storage bag, an air control valve 200 and a dust control cylinder 300; the double-port storage bag includes a bag body 110, the upper end of the bag body 110 is connected to the air control valve 200, and the lower end is inserted into the dust control cylinder 300; the bag body 110 is used to store dry cement, the air control valve 200 is used to add air to the double-port storage bag, and the dust control cylinder 300 is inserted below the liquid level and receives the dry cement discharged from the bag body 110.

[0040] The dry cement feeding device provided by the utility model pours bagged dry cement into a double-port storage bag in advance, and uses tools such as a crane to hoist it above the mixing tank and pour the dry cement into the tank for mixing. This process can avoid manually carrying each bag of bagged dry cement to the top of the mixing tank and pouring it into the mixing tank, reducing the labor intensity and the time for preparing cement slurry, leaving sufficient time for grouting, and avoiding the risk of early setting quality accidents caused by too long preparation time.

[0041] At the same time, the air control valve 200 can supply air into the double-port storage bag to avoid the negative pressure caused by the discharge of dry cement from affecting the discharge speed of dry cement, further shortening the time for preparing cement slurry. The dust control cylinder 300 avoids the harm of dust generated when dry cement is poured out to health and the environment.

[0042] The following combines Figure 1 、 Figure 2 to elaborate in detail on the structure and shape of the dry cement feeding device provided in this embodiment:

[0043] In this embodiment, the double-port storage bag includes a bag body 110, a sealing component, and a suspension strap 130. Specifically, the bag body 110 includes an upper-opening bag 111, a cylindrical bag 112, and a lower-opening bag 113 that are connected in sequence, as Figure 1 shown. The cross-section of the cylindrical bag 112 is circular, with a top and a bottom, and its inner cavity is used to store dry cement. The upper end of the cylindrical bag 112 is open and connected to the upper-opening bag 111. At the same time, a suspension strap 130 is connected to the upper end, and the lower end is connected to the upper end of the lower-opening bag 113; the upper end of the upper-opening bag 111 is provided with an opening for filling dry cement into the cylindrical bag 112, and the lower end of the lower-opening bag 113 is provided with an opening for discharging the dry cement in the cylindrical bag 112. The upper-opening bag 111, the cylindrical bag 112, and the lower-opening bag 113 can be made of nylon material and connected by sewing to ensure strength and weighing capacity, and at the same time have the advantages of being not easily worn and having good moisture-proof performance. At least two suspension straps 130 are provided to ensure the stability and convenience during hoisting and transportation; the cylindrical bag 112 with a circular cross-section is beneficial to ensuring that the center of gravity is centered and stable after loading dry cement, facilitating hoisting and transportation.

[0044] In this embodiment, the inner cavity volume of the double-port storage bag can be set above 0.5 cubic meters, so that more than 1 ton of dry cement can be filled at one time, improving the feeding efficiency of dry cement and shortening the feeding time. That is, 20 bags of dry cement can be fed at one time, and only 8 times of feeding are required for preparing cement slurry once, greatly reducing the number of feedings. Compared with feeding each bag one by one, the feeding time can be effectively reduced. In addition, cement can be filled in advance at the base or even at the cement factory, avoiding the four basic operations of on-site manual handling, unpacking, shaking the material, and discarding the bag, significantly reducing the labor intensity and improving the construction speed.

[0045] In this embodiment, the sealing assembly includes a fixed belt clip 121, a movable hole clip 122, a tapered pin 123, a release pull cord 124, a safety nut 125, a first safety cord 126, and a second safety cord 127, as Figure 1 shown. Specifically, both ends of the strip-shaped fixed belt clip 121 are connected to the outer surface of the cylindrical bag 112 to form a first through hole extending in the vertical direction; the movable hole clip 122 is disposed in the middle of the lower opening bag 113 and can be lifted upward to control the opening and closing of the opening of the lower opening bag 113, that is, the fixed belt clip 121 is located above the movable hole clip 122. In addition, the opening can be closed by screwing the lower opening bag 113 or turning the movable hole clip 122 upward. When turned upward, the movable hole clip 122 and the fixed belt clip 121 are disposed on both sides of the double-opening storage bag.

[0046] After closing the opening of the lower opening bag 113, the movable hole clip 122 passes through the first through hole for fixation. Specifically, one end of the movable hole clip 122 is connected to the lower opening bag 113, and the other end is provided with a second through hole extending in the horizontal direction; after the end of the movable hole clip 122 provided with the second through hole passes through the first through hole, the tapered pin 123 is inserted into the second through hole and abuts against the upper end of the fixed belt clip 121 to prevent the movable hole clip 122 from disengaging from the first through hole.

[0047] In this embodiment, the movable hole clip 122 is provided as a strip-shaped structure extending in the vertical direction, and the end far from the upper opening bag 111 can form the second through hole by folding; it can also be made of materials such as nylon and the second through hole is formed by punching. That is, the movable hole clip 122 can be made into a flexible member or a rigid member.

[0048] To prevent the tapered pin 123 from disengaging from the second through hole, the end of the tapered pin 123 inserted into the second through hole, that is, the end with a smaller diameter, is threadedly connected to the safety nut 125 to form a limit. Obviously, the diameter of the safety nut 125 is larger than the second through hole. The release pull cord 124 is connected to the other end with a larger diameter. When it is necessary to pull out the tapered pin 123, unscrew the safety nut 125 and then pull the release pull cord 124 to pull out the tapered pin 123 from the second through hole. Specifically, the second through hole can be made into a round hole or a tapered hole.

[0049] In this embodiment, both ends of the conical bolt 123 are respectively connected to the first safety rope 126 and the second safety rope 127; the ends of the first safety rope 126 and the second safety rope 127 away from the conical bolt 123 are respectively connected to the bag body 110. That is, the first safety rope 126 is connected to the end of the conical bolt 123 where it is connected to the safety nut 125, which is used to prevent inertial injury caused by excessive force when the conical bolt 123 is pulled out by untying the pull rope 124; the second safety rope 127 is connected to the end of the conical bolt 123 where it is connected to the pull rope 124, thereby connecting the conical bolt 123 to the bag body 110 to prevent the conical bolt 123 from being lost when it is not fixed in the second through hole by the safety nut 125.

[0050] In this embodiment, the upper-opening bag 111 can be closed by a binding rope, that is, the binding rope is tied into a movable knot to prevent sundries from entering.

[0051] In this embodiment, the bag body 110, the binding rope, the suspension strap 130, the fixed belt clip 121, and the movable hole clip 122 can all be made of nylon material. Nylon has the characteristics of high strength, can bear a relatively large weight, and is suitable for packaging relatively heavy items; at the same time, it is not easily worn and is durable; in addition, it has good moisture-proof performance and will not be affected by a humid environment, which is particularly important for storing and transporting dry cement to prevent caking and solidification; moreover, its softness and stiffness are suitable for industrial sewing and are easy to process and manufacture.

[0052] When filling with cement, fold the lower-opening bag 113 upward and then downward, or twist the lower-opening bag 113 to close the opening. Then, insert the end of the movable hole clip 122 provided with the second through hole through the first through hole, and insert the conical bolt 123 into the first through hole and then screw on the safety nut 125 to complete the closing of the lower end opening. After that, lift the suspension strap 130 to unfold the cylindrical bag 112, open the upper-opening bag 111 and fill the cylindrical bag 112 with dry cement through the upper-opening bag 111. Under the action of the gravity of the dry cement, the lower-opening bag 113 is squeezed and completely closes the opening. At this time, the opening of the lower-opening bag 113 is squeezed by the V-shaped structure formed by the upward insertion of the movable hole clip 122 into the first through hole, which drives the lower-opening bag 113 to turn up to form a closed state.

[0053] During on-site use, the hoisting machinery moves the double-opening storage bag to the predetermined position through the suspension strap 130. Then, remove the safety nut 125 and horizontally pull the pull rope 124 to make the conical bolt 123 withdraw from the second through hole. At this time, the movable hole clip 122 withdraws downward from the first through hole under the action of its own weight and the gravity of the dry cement, and then under the action of the gravity of the dry cement, the folding of the lower-opening bag 113 is flushed open to open the outlet, and the dry cement flows out. In this way, the four basic operations of manual handling, bag opening, shaking, and bag discarding before the on-site delivery of dry cement into the mixing tank are eliminated, greatly reducing the labor intensity and shortening the construction time, leaving sufficient time for injecting the cement slurry and avoiding quality accidents caused by early setting due to delay.

[0054] In this embodiment, the air control valve 200 includes a differential pressure valve 210 and a tapered hole insertion tube 220. The upper end of the tapered hole insertion tube 220 is connected to the lower end of the differential pressure valve 210 by a threaded connection, and the lower end is inserted into the upper opening bag 111 and connected to the upper opening bag 111 through a movable knot formed by a binding rope, thereby realizing the detachable connection between the air control valve 200 and the double-port storage bag. To ensure air intake and improve the air intake effect, a plurality of air intake holes extending radially are provided on the tapered hole insertion tube 220.

[0055] In this embodiment, the differential pressure valve 210 is used to control the air flow, and is provided with a valve cavity 211, a first communication hole 212, a second communication hole 213, a sealing ball 214 and a baffle 215, as Figure 2 shown; one end of the first communication hole 212 communicates with the valve cavity 211, and the other end communicates with the outside; one end of the second communication hole 213 communicates with the valve cavity 211, and the other end communicates with the bag body 110; the sealing ball 214 can fall into the first communication hole 212 to close the first communication hole 212, and the baffle 215 is used to block the sealing ball 214 from closing the second communication hole 213. Specifically, the valve cavity 211 is arranged as a rectangular inner cavity, the first through hole and the second through hole are both arranged on the lower surface of the valve cavity 211, and the tapered hole insertion tube 220 is threadedly connected and communicated with the second communication hole 213.

[0056] In this embodiment, the connection between the tapered hole insertion tube 220 and the upper opening bag 111 enables the differential pressure valve 210 to tilt limitedly under its own weight, so that the sealing ball 214 rolls into the first communication hole 212 under the action of gravity to achieve sealing, avoiding the communication between the double-port storage bag and the outside. When discharging dry cement, a negative pressure is generated in the upper part of the inner cavity of the cylindrical bag 112. When the internal and external pressure difference is large enough, the sealing ball 214 is pushed away from the first communication hole 212, and air can enter the inner cavity of the cylindrical bag 112 along the first communication hole 212 and the second communication hole 213, so that the internal and external pressures are balanced, which is beneficial to the smooth discharge of dry cement, ensures that all the dry cement can be discharged quickly, improves the construction speed, and avoids the risk of early setting quality accidents.

[0057] In addition, when the internal cavity pressure of the cylindrical bag 112 increases due to being squeezed or other conditions and dry cement dust overflows outward through the first communication hole 212, due to the air flow pushing and pressure action, it can assist the self-weight action of the sealing ball 214 to make the sealing ball 214 roll and fall into the first communication hole 212 for sealing, preventing dry cement dust from polluting the environment and affecting health.

[0058] In this embodiment, the dust control cylinder 300 is a cylindrical structure as a whole, is arranged below the double-port storage bag, and is placed at the top inlet of the mixing tank during construction, and includes a cylinder body 310, a partition net 320, a support rod 330 and a flexible cylinder 340, as Figure 1As shown. Specifically, during construction, the lower-opening bag 113 can be smoothly inserted into the cylinder body 310 after being unfolded. A flanging 311 is provided on the upper end surface of the cylinder body 310. When discharging dry cement, the bottom of the cylindrical bag 112 is in close contact with the flanging 311, avoiding dust emission. The partition net 320 is horizontally arranged and installed in the cylinder body 310, used to divide the discharged dry cement column, avoiding difficulties in stirring caused by large-volume caking of dry cement. The support rod 330 is horizontally arranged and connected to the cylinder body 310, used to abut against the top of the mixing tank to support the cylinder body 310, so as to ensure that the axis of the cylinder body 310 is vertical, facilitating the rapid insertion of the lower-opening bag 113. In this embodiment, the cylinder body 310, the partition net 320 and the support rod 330 are all made of metal materials, such as steel, to ensure strength and avoid deformation. The three can be connected by welding.

[0059] In this embodiment, the flexible cylinder 340 is connected to the lower end of the cylinder body 310 through a clamp. The material can be selected as silica gel to achieve the effects of anti-corrosion and heat resistance, and at the same time has the characteristic of easy recovery of deformation, used to seal dust emission. Specifically, the lower end of the flexible cylinder 340 is inserted below the liquid level, so that the dry cement directly enters the inner wall of the liquid, preventing dust emission when the dry cement enters the liquid level, and ensuring health and environmental safety.

[0060] In addition, when there is no dry cement passing through, the flexible cylinder 340 can be closed under its own elastic force, further avoiding environmental pollution.

[0061] In this embodiment, during on-site construction, one dust control cylinder 300, one air control valve 200 and multiple double-port storage bags can be configured. After one double-port storage bag discharges cement, the air control valve 200 can be removed and installed in the next double-port storage bag. Then, the processes of moving, positioning, unlocking and discharging of the double-port storage bag are carried out.

[0062] The large-volume double-port storage bag provided in this embodiment is pre-filled with dry cement, and is hoisted on-site by machinery and quickly unlocked through the lower-opening bag 113 to discharge dry cement, avoiding manual handling, unpacking, shaking and bag discarding and other actions, reducing labor intensity and improving construction speed; the air control valve 200 automatically supplements air during the dry cement discharging process, avoiding the formation of vacuum in the double-port storage bag and delaying the discharging speed, and eliminating the risk of early setting quality accidents caused by delay; the dust control cylinder 300 blocks dust emission through the cylinder body 310 and the flexible cylinder 340, reducing the risk of health and environmental damage caused by dust emission. At the same time, the air control valve 200 can also avoid dust emission while supplementing air, and the double-port storage bag improves the construction speed and further eliminates the risk of early setting quality accidents caused by delay.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dry cement delivery device, characterized in that: It comprises a double-port storage bag, an air control valve (200) and a dust control cylinder (300); The double-mouth storage bag comprises a bag body (110), the upper end of the bag body (110) is connected to the air control valve (200), and the lower end is inserted into the dust control cylinder (300); The bag body (110) is used to store dry cement, the air control valve (200) is used to add air to the double-mouth storage bag, and the dust control cylinder (300) is inserted below the liquid level and receives the dry cement discharged from the bag body (110).

2. The dry cement delivery device according to claim 1, characterized in that: The upper opening of the bag body (110) is used to be connected to the air control valve (200), and the lower opening is used to discharge dry cement.

3. The dry cement delivery device according to claim 1, characterized in that: The double-mouth storage bag also includes a sealing component; The sealing assembly comprises a fixed belt clamp (121), a movable hole clamp (122) and a tapered latch (123); The two ends of the fixing strap clip (121) are connected to the bag body (110) to form a first through hole extending in the vertical direction; The movable hole card (122) is arranged below the fixed belt card (121), one end of which is connected to the bag body (110), and the other end of which is provided with a second through hole extending in the horizontal direction; After one end of the movable hole card (122) provided with a second through hole passes through the first through hole, the tapered plug pin (123) is inserted into the second through hole.

4. The dry cement delivery device according to claim 3, characterized in that: The sealing assembly further comprises a release rope (124) and a safety nut (125); one end of the conical plug (123) is connected to the release rope (124), and the other end is threadedly connected to the safety nut (125); The diameter of one end of the conical plug pin (123) connected to the release rope (124) is greater than the diameter of the other end connected to the safety nut (125).

5. The dry cement delivery device according to claim 4, characterized in that: The sealing assembly further comprises a first safety rope (126) and a second safety rope (127); Two ends of the conical plug pin (123) are respectively connected to the first safety rope (126) and the second safety rope (127); One end of the first safety rope (126) and the second safety rope (127) away from the conical plug pin (123) are respectively connected to the bag body (110).

6. The dry cement delivery device according to claim 5, characterized in that: The double-port storage bag further comprises a sling (130), and the sling (130) is used for slinging.

7. The dry cement delivery device according to claim 1, characterized in that: The air control valve (200) comprises a differential pressure valve (210), wherein the differential pressure valve (210) is provided with a valve chamber (211), a first communicating hole (212), a second communicating hole (213), a sealing ball (214) and a baffle (215); One end of the first communication hole (212) is in communication with the valve cavity (211), and the other end is in communication with the outside; one end of the second communication hole (213) is in communication with the valve cavity (211), and the other end is in communication with the bag body (110); The sealing ball (214) can fall into the first communicating hole (212) to close the first communicating hole (212), and the baffle (215) is used to block the sealing ball (214) from closing the second communicating hole (213).

8. The dry cement delivery device according to claim 1, characterized in that: The dust control cylinder (300) comprises a cylinder body (310) and a partition net (320), wherein the partition net (320) is horizontally arranged and mounted on the cylinder body (310); The upper end surface of the cylinder (310) is provided with a flange (311), and the lower end of the bag body (110) is inserted into the cylinder (310).

9. The dry cement delivery device according to claim 8, characterized in that: The dust control cylinder (300) further comprises a support rod (330), wherein the support rod (330) is horizontally arranged and connected to the cylinder body (310), and is used for abutting against the top of the mixing tank to support the cylinder body (310).

10. The dry cement placing device according to claim 9, characterized in that: The dust control cylinder (300) further comprises a soft cylinder (340), wherein the soft cylinder (340) is connected to the cylinder body (310) and inserted below the liquid surface.

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