Emulsion matrix water ring anti-drag conveying device

Abstract

The utility model relates to the field of emulsion explosive on-site conveying equipment, in particular to an emulsion matrix water ring anti-drag conveying device. The conveying device comprises an inner sleeve and an outer sleeve, the section, adjacent to the inlet end, of the outer sleeve is arranged on the section, adjacent to the outlet end, of the inner sleeve in a sleeving mode, at least one water inlet hole is formed in the section, arranged on the inner sleeve in a sleeving mode, of the outer sleeve, and a reducing section is arranged on the section, adjacent to the outlet end, of the inner sleeve. And a gap is formed between the inner ring surface of the outer sleeve and the outer ring surface of the inner sleeve from the water inlet hole to the outlet end of the inner sleeve. During use, high-pressure water is injected into the gap between the outer sleeve and the inner sleeve, the high-pressure water forms a water ring to wrap the emulsion matrix, and the emulsion matrix is wrapped by the water ring and conveyed forwards. As the diameter of the emulsion matrix is reduced after the emulsion matrix passes through the reducing section, the conveying speed of the emulsion matrix in the conveying process is higher. In addition, after the water ring is formed outside the emulsion matrix, the diameter of the water ring is not reduced any more, and the stability of the water ring is improved.

Description

Technical Field

[0001] The utility model relates to the field of on-site conveying equipment for emulsion explosives, in particular to a latex matrix water ring drag reduction conveying device. Background Art

[0002] Water ring drag reduction is mainly used in the pipeline transportation of high-viscosity liquids. It is currently often used at the inlet of the delivery pipe of the on-site mixing emulsion explosive vehicle. When the emulsion explosive matrix is delivered to the inlet of the delivery pipe by the screw pump, the lubricating water passes through the preset inlet on the water ring drag reduction device and forms a water film between the inner wall of the pipe and the latex matrix, reducing the resistance of the latex matrix during transmission in the pipe.

[0003] A Chinese patent (publication number: CN216115673U) discloses a latex matrix conveying drag-reducing water ring. The device injects high-pressure water from a through hole into the water ring area, and evenly ejects water along the inner wall of the tube through the gap between the outer circular surface of the right end of the core 1a and the inner circular surface of the outer sleeve 2a. The latex matrix is wrapped in water and conveyed forward. The latex matrix never contacts the inner wall of the conveying tube, thereby achieving drag reduction.

[0004] While existing water ring drag reduction and conveying devices can achieve drag reduction, they also present some problems during use. During use, after the latex matrix passes from the core 1a into the outer shell 2a, it is wrapped by the water ring. Because the outer shell 2a has a contraction surface 3a, as the latex matrix is conveyed toward the outlet, the water ring is squeezed by the contraction surface 3a and the latex matrix. This compression process makes it difficult to maintain uniform circumferential deformation of the water ring, resulting in the water ring being easily damaged and incomplete, which in turn reduces the drag reduction effect. Utility Model Content

[0005] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a latex-based water ring drag reduction and conveying device, which can enhance the stability of the water ring.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A latex matrix water ring drag reduction conveying device includes an inner sleeve and an outer sleeve, a section of the outer sleeve adjacent to the inlet end is sleeved on a section of the inner sleeve adjacent to the outlet end, the portion of the outer sleeve adjacent to the inlet end is cooperatively connected to the inner sleeve, at least one water inlet hole is opened on a section of the outer sleeve sleeved on the inner sleeve, a section of the inner sleeve adjacent to the outlet end has a reduced diameter section, the diameter of the reduced diameter section is reduced along the conveying direction of the latex matrix, and there is a gap between the inner annular surface of the outer sleeve and the outer annular surface of the inner sleeve from the water inlet hole to the outlet end of the inner sleeve.

[0008] By adopting the above scheme, during use, the latex matrix is input from the inlet end of the inner sleeve and ultimately output from the outlet end of the outer sleeve. Because the inner sleeve has a reduced diameter section, and the diameter of the reduced diameter section decreases along the direction of latex matrix transportation, the latex matrix is squeezed by the reduced diameter section during transportation, causing its diameter to decrease. After passing through the inlet end of the inner sleeve, the latex matrix enters the outer sleeve. High-pressure water is injected into the water inlet hole, entering the gap between the outer and inner sleeves, and then entering the outlet end of the outer sleeve. The high-pressure water forms a water ring that surrounds the latex matrix. The latex matrix is transported forward wrapped in the water, and the latex matrix never contacts the inner wall of the delivery tube, thereby achieving a drag reduction effect. The reduction in diameter of the latex matrix after passing through the reduced diameter section accelerates the delivery speed of the latex matrix during subsequent transportation. Furthermore, since the water ring is formed outside the latex matrix, its diameter does not decrease further. This ensures the integrity of the water ring, improves its stability, and further enhances the drag reduction effect.

[0009] The utility model is further configured such that the diameter of the diameter-reducing section gradually shrinks along the conveying direction of the latex matrix. As the diameter of the diameter-reducing section gradually shrinks, the diameter of the latex matrix gradually shrinks during the process of passing through the diameter-reducing section, thereby reducing the resistance of the latex matrix during the process of passing through the diameter-reducing section.

[0010] The present invention further provides that the diameter of the outer sleeve's outlet end is smaller than that of the inner sleeve's inlet end, and the inner sleeve's outlet end is provided with an annular extension. The extension extends into a section adjacent to the outer sleeve's outlet end, and a gap is formed between the outer annular surface of the extension and the inner annular surface of the inner sleeve. Since the diameter of the outer sleeve's outlet end is smaller than that of the inlet end, the outer sleeve's outlet end is more conveniently connected to a small-diameter pipe. The extension provided at the inner sleeve's outlet end cooperates with a section adjacent to the inner sleeve's outlet end to guide the water ring. The inner side of the extension guides the latex matrix after its diameter has been reduced, so that after this guidance, the water ring is wrapped around the latex matrix after its diameter has been reduced, resulting in a more stable water ring.

[0011] The utility model is further configured such that the outer sleeve is provided with two water inlet holes, which are evenly distributed along the circumference of the outer sleeve. Water is simultaneously injected into the water inlet holes through the two water inlet holes, which makes the formed water ring more uniform and improves the uniformity of the water ring.

[0012] The utility model is further configured such that the outer wall of the inner sleeve is provided with a groove corresponding to the water inlet along the circumferential direction. The groove enables water entering from the water inlet to be quickly distributed on the circumference of the inner sleeve, thereby improving the uniformity of the formed water ring.

[0013] The utility model is further configured such that the outer sleeve and the inner sleeve are connected by a threaded connection, so that the inner sleeve and the outer sleeve can be easily installed and removed.

[0014] The present invention further provides that the portion of the inner sleeve located outside the outer sleeve is provided with a protrusion along the circumferential direction, and the outer wall of the protrusion is a regular polygon. Since the outer side of the inner sleeve is provided with the protrusion with the outer wall being a regular polygon, the inner sleeve can be twisted with a wrench tool, thereby facilitating the installation and removal of the inner sleeve.

[0015] The present invention further provides a circumferentially disposed positioning boss on the outer wall of the inner sleeve, the boss being located between the threaded connection between the inner and outer sleeves and the groove, and a positioning groove adapted to accommodate the boss. The coaxiality between the outer and inner sleeves can be ensured by the engagement of the boss and the groove.

[0016] The present invention further provides a sealing ring between the positioning cone and the positioning groove, which axially clamps the sealing ring. The sealing ring further enhances the sealing between the inner and outer sleeves, preventing high-pressure water from leaking outward through the threaded connection between the outer and inner sleeves.

[0017] The utility model is further configured such that both the inner sleeve and the outer sleeve are made of stainless steel, which can well adapt to the environment of latex matrix transportation and effectively ensure the life of the product.

[0018] In summary, the latex matrix water ring drag reduction conveying device provided by the present invention has at least the following beneficial effects:

[0019] 1. After the water ring is formed outside the latex matrix, the diameter of the water ring will no longer be reduced. This ensures the integrity of the water ring, improves the stability of the water ring, and further enhances the drag reduction effect.

[0020] 2. The diameter of the latex matrix decreases after passing through the diameter-reducing section, which increases the conveying speed of the latex matrix in the subsequent conveying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without expending any novel work.

[0022] Figure 1 It is a structural diagram of a drag-reducing water ring in the prior art in the background art;

[0023] Figure 2 It is a front view of the utility model;

[0024] Figure 3 yes Figure 2 Cross-sectional view at aa in the middle;

[0025] Figure 4 It is a structural diagram of the outer sleeve in the utility model;

[0026] Figure 5 It is a structural schematic diagram of the inner sleeve in the utility model.

[0027] The reference numerals include: inner sleeve 1, outer sleeve 2, water inlet hole 3, reduced diameter section 4, extension 5, groove 6, external thread section 7, internal thread section 8, protrusion 9, positioning cone 10, positioning groove 11, sealing ring 12, water inlet channel 13, core 1a, outer sleeve 2a, and contraction surface 3a. DETAILED DESCRIPTION

[0028] In order to make those skilled in the art better understand the technical solution of the utility model, Figure 1-5 The present invention is further described in detail with reference to the following specific embodiments.

[0029] See also Figure 2-5The present embodiment provides a latex matrix water ring drag reduction conveying device, comprising an inner sleeve 1 and an outer sleeve 2, wherein the latex matrix is conveyed from right to left, the right end of the inner sleeve 1 is the inlet end, and the left end of the inner sleeve 1 is the outlet end; the right end of the outer sleeve 2 is the inlet end, and the left end of the outer sleeve 2 is the outlet end. A section of the outer sleeve 2 adjacent to the inlet end of the outer sleeve 2 is sleeved on a section of the inner sleeve 1 adjacent to the outlet end of the inner sleeve 1, and the portion of the outer sleeve 2 adjacent to the inlet end of the outer sleeve 2 is matingly connected to the inner sleeve 1. At least one water inlet hole 3 is opened on the section of the outer sleeve 2 sleeved on the inner sleeve 1. Wherein, if there are two or more water inlet holes 3, the water inlet holes 3 are preferably evenly distributed along the circumferential direction of the outer sleeve 2. In this embodiment, it is preferred that there are two water inlet holes 3, and the two water inlet holes 3 are evenly distributed along the circumferential direction of the outer sleeve 2. A section of the inner sleeve 1 adjacent to the outlet end has a reduced diameter section 4, the diameter of which decreases along the conveying direction of the latex matrix. The diameter of the reduced diameter section 4 preferably gradually decreases along the conveying direction of the latex matrix, that is, both the outer diameter and the inner diameter of the reduced diameter section 4 gradually decrease from right to left. A gap is provided between the inner annular surface of the outer sleeve 2 and the outer annular surface of the inner sleeve 1, from the water inlet hole 3 to the outlet end of the inner sleeve 1. An annular water inlet channel 13 is formed between the outer sleeve 2 and the inner sleeve 1. The inlet of the water inlet channel 13 is connected to the water inlet hole 3, and the outlet of the water inlet channel 13 is correspondingly connected to the outlet end of the outer sleeve 2. Water entering from the water inlet hole 3 can enter the inner side of a section adjacent to the outlet end of the outer sleeve 2 through the water inlet channel 13.

[0030] By adopting the above scheme, during use, the latex matrix is input from the inlet end of the inner sleeve and ultimately output from the outlet end of the outer sleeve. Because the inner sleeve has a reduced diameter section, and the diameter of the reduced diameter section decreases along the direction of latex matrix transportation, the latex matrix is squeezed by the reduced diameter section during transportation, causing its diameter to decrease. After passing through the inlet end of the inner sleeve, the latex matrix enters the outer sleeve. High-pressure water is injected into the water inlet hole, entering the gap between the outer and inner sleeves, and then entering the outlet end of the outer sleeve. The high-pressure water forms a water ring that surrounds the latex matrix, and the latex matrix is transported forward wrapped in the water. The latex matrix never contacts the inner wall of the delivery tube, thereby achieving a drag reduction effect. The reduction in diameter of the latex matrix after passing through the reduced diameter section increases the delivery speed of the latex matrix during subsequent transportation. Furthermore, since the water ring is formed outside the latex matrix, its diameter does not decrease further. This ensures the integrity of the water ring, improves its stability, and further enhances the drag reduction effect.

[0031] Please continue reading Figure 3The diameter of the outer sleeve 2 at the outlet is smaller than that at the inlet, and the shape of the section of the outer sleeve 2 adjacent to the outlet matches the reduced diameter section 4 of the inner sleeve 1. The outlet of the inner sleeve 1 is provided with an annular extension 5, which extends into the section adjacent to the outlet of the outer sleeve 2, with a gap between the outer annular surface of the extension 5 and the inner annular surface of the inner sleeve 1.

[0032] See also Figure 3 and 5 The outer wall of the inner sleeve 1 is provided with a groove 6 corresponding to the water inlet hole 3 along the circumferential direction. Water entering the groove 6 from the water inlet hole 3 can circle the inner sleeve 1 along the groove 6.

[0033] Please continue to refer to 3-5. The part where the outer sleeve 2 and the inner sleeve 1 are matched and connected is a threaded connection. Specifically, the right end of the outer sleeve 2 and a section adjacent to the right end are provided with an internal threaded section 8, and the inner sleeve 1 is provided with an external threaded section 7 that matches the threaded section. The external threaded section 7 of the inner sleeve 1 is threadedly matched with the internal threaded section 8 of the outer sleeve 2.

[0034] Please continue reading Figure 2 and Figure 3 The portion of the inner sleeve 1 outside the outer sleeve 2 is provided with a protrusion 9 along the circumferential direction, and the outer wall of the protrusion 9 is a regular polygon. In this embodiment, the outer wall of the protrusion 9 is preferably a regular hexagon.

[0035] See also Figure 3 and Figure 5 The outer wall of the inner sleeve 1 is provided with a positioning cone 10, which is arranged along the circumferential direction of the inner sleeve 1. The positioning cone 10 is located between the threaded connection between the inner sleeve 1 and the outer sleeve 2 and the groove 6. The inner wall of the outer sleeve 2 is provided with a positioning groove 11 for the adaptive insertion of the positioning cone 10. During assembly, the inner sleeve 1 is inserted into the outer sleeve 2 from right to left, and the inner sleeve 1 is rotated so that the inner sleeve 1 and the outer sleeve 2 are threaded together. During the process of inserting the inner sleeve 1 into the outer sleeve 2, the positioning cone 10 is inserted into the positioning groove 11, and the positioning groove 11 cooperates with the positioning cone 10, thereby ensuring the coaxiality between the inner sleeve 1 and the outer sleeve 2 and ensuring the assembly accuracy.

[0036] Please continue reading Figure 3 A sealing ring 12 is provided between the positioning truncated cone 10 and the positioning groove 11. The positioning truncated cone 10 and the positioning groove 11 clamp the sealing ring 12 together along the axial direction. The inner sleeve 1 and the outer sleeve 2 are both made of stainless steel.

[0037] It should be noted that the words indicating direction in this article, such as up and down, are all based on Figure 1 The setting of the direction is only for the convenience of description and has no other specific meaning.

[0038] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the article or device comprising the aforementioned elements.

[0039] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A latex-based water ring drag reduction conveying device, comprising an inner sleeve (1) and an outer sleeve (2), characterized in that: A section of the outer sleeve (2) adjacent to the inlet end is sleeved on a section of the inner sleeve (1) adjacent to the outlet end, and the portion of the outer sleeve (2) adjacent to the inlet end is cooperatively connected with the inner sleeve (1). At least one water inlet hole (3) is provided on a section of the outer sleeve (2) sleeved on the inner sleeve (1), and a diameter-reducing section (4) is provided on a section of the inner sleeve (1) adjacent to the outlet end. The diameter of the diameter-reducing section (4) is reduced along the conveying direction of the latex matrix, and a gap is provided between the inner annular surface of the outer sleeve (2) and the outer annular surface of the inner sleeve (1) from the water inlet hole (3) to the outlet end of the inner sleeve (1).

2. A latex-based water ring drag reduction conveying device as claimed in claim 1, characterized in that: The diameter of the diameter-reducing section (4) gradually shrinks along the conveying direction of the latex matrix.

3. A latex-based water ring drag reduction conveying device as claimed in claim 1, characterized in that: The diameter of the outlet end of the outer sleeve (2) is smaller than the diameter of the inlet end. The outlet end of the inner sleeve (1) is provided with an annular extension portion (5). The extension portion (5) extends into a section adjacent to the outlet end of the outer sleeve (2). There is a gap between the outer annular surface of the extension portion (5) and the inner annular surface of the inner sleeve (1).

4. A latex-based water ring drag reduction conveying device according to any one of claims 1 to 3, characterized in that: Two water inlet holes (3) are provided on the outer sleeve (2), and the two water inlet holes (3) are evenly distributed along the circumferential direction of the outer sleeve (2).

5. A latex-based water ring drag reduction conveying device as claimed in claim 4, characterized in that: The outer wall of the inner sleeve (1) is provided with a groove (6) corresponding to the water inlet hole (3) along the circumferential direction.

6. A latex-based water ring drag reduction conveying device as claimed in claim 5, characterized in that: The outer sleeve (2) and the inner sleeve (1) are connected in a threaded manner.

7. A latex-based water ring drag reduction conveying device as claimed in claim 6, characterized in that: The portion of the inner sleeve (1) located outside the outer sleeve (2) is provided with a protrusion (9) along the circumferential direction, and the outer wall of the protrusion (9) is a regular polygon.

8. A latex-based water ring drag reduction conveying device as claimed in claim 6, characterized in that: The outer wall of the inner sleeve (1) is provided with a positioning cone (10) along the circumferential direction. The positioning cone (10) is located between the threaded connection between the inner sleeve (1) and the outer sleeve (2) and the groove (6). The inner wall of the outer sleeve (2) is provided with a positioning groove (11) for the positioning cone (10) to be adaptively inserted.

9. A latex-based water ring drag reduction conveying device as claimed in claim 8, characterized in that: A sealing ring (12) is provided between the positioning truncated cone (10) and the positioning groove (11), and the positioning truncated cone (10) and the positioning groove (11) jointly clamp the sealing ring (12) along the axial direction.

10. The latex-based water ring drag reduction conveying device according to claim 1, characterized in that: The inner sleeve (1) and the outer sleeve (2) are both made of stainless steel.

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