Connecting structure of wear-resistant double-sleeve pneumatic conveying pipeline

Abstract

The utility model discloses a wear-resisting double-sleeve pneumatic conveying pipeline connecting structure which comprises a connecting unit and a sealing unit, the connecting unit comprises double sleeves and a connecting pipe, flange plates are fixedly connected to the two ends of the connecting pipe in a sleeved mode, and the double sleeves are fixedly connected with one flange plate on the connecting pipe through bolts. The fixing device comprises a fixing block fixedly connected to the inner wall of a connecting pipe, one side of the fixing block is fixedly connected with a connecting cylinder, and inserting pipes are arranged at the two ends of the inner wall of the connecting cylinder in a sliding mode respectively. The conical rods of the two insertion pipes are mutually inserted into the conical holes of the two insertion pipes by pushing the insertion pipes, so that the two insertion pipes can seal the joint of the two inner pipes, gas can freely move at the joint of the two inner pipes through the two insertion pipes, and the turbulent flow blowing effect of the inner pipes can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of double-sleeve pipes, in particular to a connection structure of a wear-resistant double-sleeve pipe pneumatic conveying pipeline. Background Art

[0002] The double-tube system consists of an inner tube with a smaller internal diameter and an outer tube with a larger external diameter. The inner tube has specific openings at regular intervals. This structure allows that when a material blockage occurs somewhere during the conveying process, the conveying pressure in front of the blockage increases, forcing the conveying airflow into the inner tube and out through the opening downstream of the blockage at a higher speed, causing disturbance and blowing through the blocked material, thus ensuring normal conveying of the material in the tube.

[0003] A double-tube structure is composed of an inner tube with a smaller inner diameter and an outer tube with a larger outer diameter, and a plurality of double-tube structures can form a pneumatic conveying pipeline. When two double-tube structures are connected, the inner tubes of the two double-tube structures are usually aligned, and then the outer tubes of the two double-tube structures are flange-connected. This results in a lack of a sealed connection between the two inner tubes, resulting in a gap at the connection between the two inner tubes. Gas will flow out of the gap, thereby reducing the effect of the inner tube on the turbulent blowing of materials. Therefore, a connection structure for a wear-resistant double-tube pneumatic conveying pipeline is proposed. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned connection structure of the existing wear-resistant double-tube pneumatic conveying pipeline, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a connection structure for a wear-resistant double-sleeve pneumatic conveying pipeline, which is suitable for solving the problem that when two double-sleeves are connected, there is a lack of sealed connection between the two inner tubes, resulting in a gap at the connection between the two inner tubes, thereby reducing the effect of turbulent blowing of materials.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a connection structure of a wear-resistant double-tube pneumatic conveying pipeline, comprising:

[0008] The connecting unit comprises a double sleeve and a connecting pipe, wherein flanges are fixedly sleeved at both ends of the connecting pipe, and the double sleeve is fixedly connected to one of the flanges on the connecting pipe by bolts;

[0009] A sealing unit includes a fixed block fixedly connected to the inner wall of the connecting tube, one side of the fixed block is fixedly connected to the connecting tube, and both ends of the inner wall of the connecting tube are slidably provided with inserts, the side surfaces of the two inserts are fixedly connected to rectangular blocks, the two rectangular blocks are slidably provided on the inner wall of the insert, the side surfaces of the two inserts are fixedly connected to rectangular plates, both ends of the connecting tube are provided with rectangular grooves that fit the rectangular plates, the opposite surfaces of the two inserts are fixedly connected with multiple conical rods and provided with multiple conical holes that fit the conical rods, the multiple conical rods and multiple conical holes at the opposite ends of the two inserts are staggered and correspond to each other, the inner wall of the connecting tube is fixedly connected to a fixed plate, and one side of the fixed plate is provided with multiple circular holes that fit the conical rods.

[0010] As a preferred solution of the connection structure of the wear-resistant double-tube pneumatic conveying pipeline described in the present invention, rubber rings are fixedly connected to both sides of the fixed plate, and multiple circular holes that fit the tapered rods are opened on one side of the two rubber rings.

[0011] As a preferred solution of the connection structure of the wear-resistant double-sleeve pneumatic conveying pipeline described in the utility model, springs are fixedly connected to both sides of the fixed block, and the ends of the two springs away from the fixed block are fixedly connected to the opposite surfaces of the two rectangular plates.

[0012] As a preferred solution of the connection structure of a wear-resistant double-sleeve pneumatic conveying pipeline described in the utility model, wherein: an arc groove and two limit grooves are opened on the side of the connecting pipe, the two ends of the arc groove are respectively connected to the two limit grooves, and a ball head rod is slidably provided on the inner side of one of the limit grooves, and the end of the ball head rod is fixedly connected to an iron rod.

[0013] As a preferred solution of the connection structure of the wear-resistant double-sleeve pneumatic conveying pipeline described in the utility model, one side of one of the flanges is embedded with a magnet, and the position of the magnet corresponds to the iron rod.

[0014] As a preferred solution of the connection structure of the wear-resistant double-sleeve pneumatic conveying pipeline described in the present invention, annular grooves are provided at both ends of the connecting pipe, and sealing gaskets are movably provided on the inner sides of the two annular grooves.

[0015] The beneficial effects of the utility model are as follows: by putting the inner tube of the double sleeve on the insertion tube, the two inner tubes of the double sleeve can be accurately aligned without deviation, and by pushing the insertion tube, the tapered rods of the two insertion tubes are inserted into each other's tapered holes, so as to ensure that the two insertion tubes can seal the connection between the two inner tubes, and the gas can move freely at the connection between the two inner tubes through the two insertion tubes, which can ensure the sealing of the connection between the two inner tubes and the turbulent blowing effect of the inner tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the connection structure of the wear-resistant double-tube pneumatic conveying pipeline proposed by the utility model;

[0018] Figure 2 This is a half-section schematic diagram of the connecting tube proposed by the present utility model;

[0019] Figure 3 This is a schematic diagram of the sealing unit structure proposed by the present utility model;

[0020] Figure 4 This is an exploded diagram of the positional relationship between the cannula, the rubber ring, and the fixing plate proposed in the present invention;

[0021] Figure 5 This is a schematic diagram of the positional relationship between the magnet and the iron rod proposed in the present invention.

[0022] Description of the drawings: 100, connecting unit; 101, double sleeve; 102, connecting pipe; 103, flange; 104, annular groove; 105, sealing gasket; 200, sealing unit; 201, connecting tube; 202, insert tube; 203, rectangular block; 204, rectangular plate; 205, tapered rod; 206, fixing plate; 207, rubber ring; 208, spring; 209, arc groove; 210, limit groove; 211, ball head rod; 212, iron rod; 213, magnet. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0027] Example

[0028] Reference Figure 1-Figure 5 , which is an embodiment of the present utility model, provides a connection structure of a wear-resistant double-tube pneumatic conveying pipeline, comprising: a connection unit 100 and a sealing unit 200;

[0029] The connection unit 100 includes a double sleeve 101 and a connecting pipe 102. Both ends of the connecting pipe 102 are fixedly sleeved with flanges 103. The double sleeve 101 is fixedly connected to one of the flanges 103 on the connecting pipe 102 by bolts.

[0030] The sealing unit 200 includes a fixed block fixedly connected to the inner wall of the connecting tube 102, one side of the fixed block is fixedly connected to the connecting tube 201, and the two ends of the inner wall of the connecting tube 201 are respectively slidably provided with inserts 202, the sides of the two inserts 202 are fixedly connected with rectangular blocks 203, the two rectangular blocks 203 are slidably provided on the inner wall of the inserts 202, the sides of the two inserts 202 are fixedly connected with rectangular plates 204, both ends of the connecting tube 102 are provided with rectangular grooves that fit the rectangular plates 204, the opposite surfaces of the two inserts 202 are fixedly connected with multiple tapered rods 205 and multiple tapered holes that fit the tapered rods 205, the multiple tapered rods 205 and the multiple tapered holes at the opposite ends of the two inserts 202 are staggered and correspond to each other, the inner wall of the connecting tube 201 is fixedly connected with a fixed plate 206, and one side of the fixed plate 206 is provided with multiple circular holes that fit the tapered rods 205.

[0031] In addition, rubber rings 207 are fixedly connected to both sides of the fixed plate 206, and multiple circular holes that fit the conical rods 205 are opened on one side of the two rubber rings 207. Springs 208 are fixedly connected to both sides of the fixed block, and the ends of the two springs 208 away from the fixed block are fixedly connected to the opposite surfaces of the two rectangular plates 204.

[0032] The two ends of the double sleeve 101 are fixedly connected with flanges that fit with the flange plate 103. The inner tube diameter and inner diameter of the double sleeve 101 are the same as those of the connecting tube 201, so that the insert tube 202 can be inserted into the inner tube of the double sleeve 101. When the inner tube is put on the insert tube 202, the end of the inner tube will contact each other with the rectangular plate 204, and the rectangular plate 204 is pushed by the inner tube to push the insert tube 202 toward the center of the connecting tube 201. The interior of the connecting tube 201 is provided with two straight grooves that fit with the rectangular block 203. The sliding of the rectangular block 203 in the straight groove prevents the insert tube 202 from deflecting in the connecting tube 201. When the rectangular plate 204 is located in the rectangular groove of the connecting tube 201, the rectangular plate 204 is flush with the end of the connecting tube 201, and the tapered rod 205 of the insert tube 202 will pass through the circular holes of the fixing plate 206 and the two rubber rings 207;

[0033] The rubber ring 207 is used to protect the contact surface between the insert 202 and the fixing plate 206 and improve the sealing between the two. At this time, the end of the inner tube is completely in contact with the end of the connecting tube 201. Then, the double sleeve 101 is fixed to one end of the connecting tube 102 by bolts and flange 103. Then, the inner tube of the other double sleeve 101 is put on the other insert 202, and the other insert 202 is pushed toward the fixing plate 206. The tapered rods 205 and the tapered holes of the two inserts 202 are staggered, and the tapered rods 205 of the two inserts 202 are staggered and inserted into each other's tapered holes.

[0034] The tapered rod 205 of the second insert tube 202 will also pass through the circular holes of the fixing plate 206 and the rubber ring 207. After the tapered rods 205 of the two insert tubes 202 are staggered and inserted into each other's tapered holes, the two insert tubes 202 are firmly locked and tightly attached to the two rubber rings 207, so that the two insert tubes 202 will not deflect or move. Then, the other double sleeve 101 can be fixed to the flange 103 by bolts to ensure that the two insert tubes 202 can seal the connection between the two inner tubes and allow the gas to move freely at the connection between the two inner tubes through the two insert tubes 202, thereby ensuring the sealing of the connection between the two inner tubes and the turbulent blowing effect of the inner tubes.

[0035] During disassembly, the inner tube can be pulled out from the insert 202 by removing the bolts fixing the flange 103 and the double sleeve 101. Then the spring 208 will push the rectangular plate 204 to separate the two inserts 202 from each other. The spring 208 makes it easier for workers to completely separate the two inserts 202 and connect the subsequent double sleeve 101.

[0036] Furthermore, an arc groove 209 and two limit grooves 210 are provided on the side of the connecting tube 102. The two ends of the arc groove 209 are respectively connected to the two limit grooves 210. A ball head rod 211 is slidably provided on the inner side of one of the limit grooves 210. The end of the ball head rod 211 is fixedly connected to an iron rod 212. A magnet 213 is embedded on one side of one of the flanges 103. The position of the magnet 213 corresponds to the iron rod 212. An annular groove 104 is provided at both ends of the connecting tube 102. A sealing gasket 105 is movably sleeved on the inner side of the two annular grooves 104.

[0037] The position of one of the limiting grooves 210 corresponds to the connection hole of the flange 103, and the other limiting groove 210 is located between two adjacent connection holes of the flange 103. The arc groove 209 can make the ball head rod 211 move into the two limiting grooves 210. By moving into the limiting groove 210 close to the connection hole, the iron rod 212 can pass through the connection hole of the flange 103. When the two double sleeves 101 are docked, the double sleeves 101 are too long to be docked. After one of the double sleeves 101 is connected to the connecting tube 201, the inner tube of the other double sleeve 101 is sleeved on the insert pipe 202 at the other end of the connecting tube 201. The end of the iron rod 212 will pass through the flange connection hole of the other double sleeve 101, thereby forming a two-point straight line through the insert pipe 202 and the iron rod 212.

[0038] Thus, the double sleeve 101 is locked and cannot rotate, so that the flange of the double sleeve 101 can be aligned with the connecting hole of the flange 103, so that workers can install bolts to fix it. The sealing gasket 105 will seal the connecting end of the connecting tube 201 and the double sleeve 101 to ensure the sealing of the connection. The sealing gasket 105 can be taken out and replaced through the annular groove 104. When some bolts have been connected to the flange 103;

[0039] The iron rod 212 is moved through the limiting groove 210 so that it is no longer inserted into the connecting hole of the flange 103. Then, the iron rod 212 is moved to another limiting groove 210 through the arc groove 209. At this time, the magnet 213 contacts the iron rod 212 and attracts the iron rod 212 so that it does not move on the arc groove 209. Then, all the bolts can be connected to the flange 103.

[0040] During use, the inner tube of the double sleeve 101 is put on the insertion tube 202, and then the rectangular plate 204 is pushed by the inner tube to make the tapered rod 205 of the insertion tube 202 pass through the circular holes of the fixing plate 206 and the two rubber rings 207. When the end of the inner tube is completely in contact with the end of the connecting tube 201, the double sleeve 101 is fixed to one end of the connecting tube 102 by bolts and flange 103. Then, the above operation is repeated to put the inner tube of the other double sleeve 101 on the other insertion tube 202, and the iron rod 212 is moved to lock the other double sleeve 101 to the iron rod 212 so that it cannot rotate.

[0041] Then, the other insert tube 202 is pushed toward the fixing plate 206 so that the tapered rods 205 of the two insert tubes 202 are inserted into each other's tapered holes in an alternating manner. At this time, the two insert tubes 202 are firmly locked and will not deflect or move. At this time, the other double sleeve 101 can be fixed to the flange 103 by bolts. When some bolts have been connected to the flange 103, the iron rod 212 is moved so that it is no longer inserted into the connecting hole of the flange 103, and the iron rod 212 is attracted by the magnet 213 so that it does not move on the arc groove 209. Then, all the bolts can be connected to the flange 103, so that the two insert tubes 202 can seal the connection between the two inner tubes. As a result, the gas can move freely at the connection between the two inner tubes through the two insert tubes 202 to ensure the turbulent blowing effect of the inner tubes.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A connection structure for a wear-resistant double-tube pneumatic conveying pipeline, characterized in that: include: A connecting unit (100) comprises a double sleeve (101) and a connecting pipe (102), wherein both ends of the connecting pipe (102) are fixedly sleeved with flanges (103), and the double sleeve (101) is fixedly connected to one of the flanges (103) on the connecting pipe (102) by bolts; The sealing unit (200) comprises a fixed block fixedly connected to the inner wall of the connecting tube (102), one side of the fixed block is fixedly connected to the connecting tube (201), both ends of the inner wall of the connecting tube (201) are slidably provided with inserts (202), the sides of the two inserts (202) are fixedly connected to rectangular blocks (203), the two rectangular blocks (203) are slidably provided on the inner wall of the insert (202), the sides of the two inserts (202) are fixedly connected to rectangular plates (204), and the connecting tubes (201) are fixedly connected to the inner wall of the connecting tube (202). Both ends of the tube (102) are provided with rectangular grooves that fit the rectangular plate (204); the opposite surfaces of the two inserting tubes (202) are fixedly connected with a plurality of tapered rods (205) and provided with a plurality of tapered holes that fit the tapered rods (205); the plurality of tapered rods (205) and the plurality of tapered holes at the opposite ends of the two inserting tubes (202) are staggered and correspond to each other; the inner wall of the connecting tube (201) is fixedly connected with a fixing plate (206); and a plurality of circular holes that fit the tapered rods (205) are provided on one side of the fixing plate (206).

2. The wear-resistant double-tube pneumatic conveying pipe connection structure according to claim 1, characterized in that: Both sides of the fixing plate (206) are fixedly connected with rubber rings (207), and one side of the two rubber rings (207) is provided with a plurality of circular holes that fit the tapered rods (205).

3. The wear-resistant double-tube pneumatic conveying pipe connection structure according to claim 1, characterized in that: Springs (208) are fixedly connected to both sides of the fixed block, and ends of the two springs (208) away from the fixed block are fixedly connected to opposite surfaces of the two rectangular plates (204).

4. The wear-resistant double-tube pneumatic conveying pipe connection structure according to claim 1, characterized in that: An arcuate groove (209) and two limiting grooves (210) are provided on the side of the connecting tube (102), and the two ends of the arcuate groove (209) are respectively connected to the two limiting grooves (210), and a ball head rod (211) is slidably provided on the inner side of one of the limiting grooves (210), and the end of the ball head rod (211) is fixedly connected to an iron rod (212).

5. The wear-resistant double-tube pneumatic conveying pipe connection structure according to claim 4, characterized in that: A magnet (213) is embedded on one side of one of the flanges (103), and the position of the magnet (213) corresponds to the iron rod (212).

6. The wear-resistant double-tube pneumatic conveying pipeline connection structure according to claim 1, characterized in that: Both ends of the connecting pipe (102) are provided with an annular groove (104), and the inner sides of the two annular grooves (104) are movably sleeved with sealing gaskets (105).

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