Pipeline connecting structure for heating and ventilation engineering

Abstract

The utility model relates to the technical field of pipeline connection, and discloses a pipeline connection structure for heating and ventilation engineering, which comprises a connection pipe and an external connection pipe, the connection pipe and the external connection pipe are mutually clamped, the side walls of the two sides of the connection pipe are respectively provided with a clamping groove, the side wall of the external connection pipe is fixedly connected with a clamping block, and the clamping block can extend into the inner cavity of the clamping groove. Sliding blocks are slidably connected to the two sides of the inner wall of the connecting pipe, springs are fixedly connected between the sliding blocks and the inner wall of the connecting pipe, the sliding blocks can slide into inner cavities of the clamping grooves, and connecting columns are rotatably connected to the ends of the sliding blocks; according to the pipeline connecting structure for the heating and ventilation project, a threaded bolt and a connecting column are used for pulling a sliding block to an inner cavity of a connecting pipe, a clamping block on the side wall of an external connecting pipe is inserted into an inner cavity of a clamping groove, the clamping block is rotated, the clamping block rotates in the inner cavity of the clamping groove, and when a clamping hole formed in the side wall of the clamping block rotates to one side of the sliding block, the sliding block can rotate under the elastic force action of a spring; therefore, the positioning of the clamping hole and the external connection pipe is completed, and the positioning is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field, concretely is pipeline connection structure for heating ventilation engineering. BACKGROUND

[0002] Heating ventilation engineering refers to the total engineering of heating ventilation system construction, wherein the heating ventilation pipe is the main pipeline for air delivery, the thickness and specification of the heating ventilation pipe can be changed according to requirements, and generally, when being connected, the two ends of the air pipe are always connected with fittings, in general, the two ends of the heating ventilation pipe are not provided with grooves and sealing rings, and the heating ventilation pipe is widely applicable, such as the clean system return air pipe, the central air conditioning ventilation pipe, the industrial air supply and exhaust ventilation pipe, the environmental protection system air suction and exhaust pipe, the mine gas extraction pipe and the mine rubber coated air pipe.

[0003] At present, the interface of the heating ventilation pipe on the market is generally provided with a flange, and two heating ventilation pipes are fixed with each other through the flange plate, but the flange plate is generally provided with a plurality of threaded holes, the threaded holes of the two flange plates need to be corresponded one by one, so that the installation can be completed, which is very cumbersome, and the threaded bolt is prone to rust after long time use and is difficult to disassemble. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a pipeline connection structure for heating ventilation engineering, which has the advantages of convenient positioning and fixing, and avoids the problems of complicated positioning, installation and disassembly.

[0005] In order to realize the purpose of convenient positioning and fixing, the utility model provides the following technical scheme:

[0006] The pipeline connection structure for heating ventilation engineering comprises a connecting pipe and an external connecting pipe, the connecting pipe and the external connecting pipe are clamped with each other, the side walls of the two sides of the connecting pipe are both provided with clamping grooves, the side wall of the external connecting pipe is fixedly connected with clamping blocks, and the clamping blocks can extend into the inner cavities of the clamping grooves, and the pipeline connection structure further comprises:

[0007] The inner walls of the connecting pipe are both slidably connected with sliding blocks, springs are fixedly connected between the sliding blocks and the inner walls of the connecting pipe, the sliding blocks can slide into the inner cavities of the clamping grooves, the end portions of the sliding blocks are rotatably connected with connecting columns, the connecting columns can penetrate through the connecting pipe, the end portions of the connecting columns are fixedly connected with threaded bolts, the threaded bolts can be threadedly connected with the side walls of the connecting pipe, and the side walls of the two sides of the clamping blocks are both provided with clamping holes, and the sliding blocks can extend into the inner cavities of the clamping holes.

[0008] According to some embodiments, the inner walls of the clamping grooves are fixedly connected with first sealing rings, the end portions of the external connecting pipes located outside the clamping blocks are fixedly connected with second sealing rings, clamping rings are clamped between the connecting pipe and the external connecting pipe located outside the second sealing rings, and the clamping rings are threadedly connected with fixing bolts.

[0009] According to some embodiments, a protective shell is clamped on the side wall of the connecting pipe outside the threaded bolt, the clamping bolt is threadedly connected to the side wall of the protective shell and can extend to the inner wall of the connecting pipe, the sliding block and the clamping hole are one-to-one corresponding, and the sliding block and the clamping hole are provided as cylinders and have the same diameter.

[0010] Advantages

[0011] The utility model provides a pipeline connection structure for heating engineering has the following advantages:

[0012] (1) the pipeline connection structure for heating engineering, utilize threaded bolt and connecting column pull sliding block to connecting pipe inner chamber, the clamping block of outer connecting pipe side wall is inserted into the clamping groove inner chamber, rotate clamping block, clamping block rotates in the clamping groove inner chamber, when the clamping hole of the side wall of clamping block rotates to one side of sliding block, sliding block will slide to the clamping hole inner chamber under the elastic force of spring, thereby the positioning of clamping hole and outer connecting pipe is completed, and the positioning is simple.

[0013] (2) the pipeline connection structure for heating engineering, rotate threaded bolt again to make it threadedly connected with the connecting pipe, and the threaded bolt drives the sliding block to extend to the clamping hole inner chamber through the connecting column, thereby fixing the clamping block, and after fixing, the protective shell is installed outside the threaded bolt, the protective shell can protect the threaded bolt from corrosion and rust damage, and the threaded bolt is convenient to disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model device;

[0015] Figure 2 It is a partial sectional structure schematic diagram of the utility model device;

[0016] Figure 3 It is a structural schematic diagram (front section) of the connecting pipe of the utility model;

[0017] Figure 4 It is Figure 3 The local amplification structure of point A;

[0018] Figure 5 It is the structural schematic diagram of the utility model outer connecting pipe.

[0019] In the drawing: 1, connecting pipe; 101, outer connecting pipe; 102, clamping groove; 103, clamping block; 2, sliding block; 201, spring; 202, connecting column; 203, threaded bolt; 204, clamping hole; 3, second sealing ring; 301, clamping ring; 4, protective shell. DETAILED DESCRIPTION

[0020] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0021] With reference to Figures 1-5 , the utility model discloses a pipeline connecting structure for heating engineering, which comprises a connecting pipe 1 and an external connecting pipe 101, the connecting pipe 1 and the external connecting pipe 101 are clamped with each other, clamping grooves 102 are formed in the side walls of the connecting pipe 1, clamping blocks 103 are fixedly connected to the side walls of the external connecting pipe 101 and can extend into the inner cavities of the clamping grooves 102, and the utility model further comprises:

[0022] sliding blocks 2 are slidably connected to the inner walls of the connecting pipe 1, springs 201 are fixedly connected between the sliding blocks 2 and the inner walls of the connecting pipe 1, the sliding blocks 2 can slide into the inner cavities of the clamping grooves 102, connecting columns 202 are rotatably connected to the end portions of the sliding blocks 2, the connecting columns 202 can penetrate through the connecting pipe 1, threaded bolts 203 are fixedly connected to the end portions of the connecting columns 202, and the threaded bolts 203 can be threadedly connected to the side walls of the connecting pipe 1;

[0023] clamping holes 204 are formed in the side walls of the clamping blocks 103, and the sliding blocks 2 can extend into the inner cavities of the clamping holes 204;

[0024] It should be noted that the threaded bolt 203 is pulled to the outside of the connecting pipe 1, the threaded bolt 203 pulls the sliding block 2 to slide into the inner cavity of the connecting pipe 1 by means of the connecting column 202, the spring 201 is compressed and generates a rebound force, at this time, the clamping block 103 on the side wall of the external connecting pipe 101 can be inserted into the inner cavity of the clamping groove 102 until the clamping block 103 is attached to the bottom of the clamping groove 102, at this time, the threaded bolt 203 can be loosened, the sliding block 2 slides into the inner cavity of the clamping groove 102 under the action of the rebound force of the spring 201, since the clamping block 103 is inserted into the inner cavity of the clamping groove 102 at this time, the side wall of the sliding block 2 is attached to the clamping block 103, the connecting pipe 1 is used to rotate the clamping block 103, the clamping block 103 rotates in the inner cavity of the clamping groove 102, when the clamping hole 204 formed in the side wall of the clamping block 103 rotates to one side of the sliding block 2, the sliding block 2 will slide into the inner cavity of the clamping hole 204 under the action of the elastic force of the spring 201, thereby the positioning of the clamping hole 204 and the external connecting pipe 101 is completed, the threaded bolt 203 is threadedly connected to the connecting pipe 1 by rotating the threaded bolt 203, the threaded bolt 203 drives the sliding block 2 to extend into the inner cavity of the clamping hole 204 through the connecting column 202, thereby the clamping block 103 is fixed, and the external connecting pipe 101 is fixed and positioned in the above manner.

[0025] With reference to Figures 1-5The inner wall of the clamping groove 102 is fixedly connected with a first sealing ring, and the end of the outer connecting pipe 101 located outside the clamping block 103 is fixedly connected with a second sealing ring 3.

[0026] The clamping ring 301 is clamped between the connecting pipe 1 and the outer connecting pipe 101 located outside the second sealing ring 3, and the fixing bolt is threadedly connected between the clamping rings 301.

[0027] It should be noted that the first sealing ring and the second sealing ring 3 enhance the sealing effect of the connecting pipe 1 and the outer connecting pipe 101, and prevent hot gas leakage. The clamping ring 301 not only reinforces the connection of the connecting pipe 1 and the outer connecting pipe 101, but also protects the second sealing ring 3.

[0028] Referring to Figures 1-5 The connecting pipe 1 side wall located outside the threaded bolt 203 is clamped with a protective shell 4, the protective shell 4 side wall is threadedly connected with a clamping bolt, and the clamping bolt can extend into the connecting pipe 1 inner wall.

[0029] The sliding block 2 and the clamping hole 204 correspond one-to-one, and the sliding block 2 and the clamping hole 204 are set as cylinders with the same diameter.

[0030] It should be noted that the protective shell 4 can protect the threaded bolt 203 from rusting and being damaged due to external corrosion. The sliding block 2 and the clamping hole 204 are arranged to make the outer connecting pipe 101 and the connecting pipe 1 connect tightly without shaking.

[0031] Operation mode: pull the threaded bolt 203 to the outside of the connecting pipe 1, the threaded bolt 203 pulls the sliding block 2 to slide into the connecting pipe 1 inner cavity by the connecting column 202, the spring 201 is compressed, and the rebound force is generated. At this time, the clamping block 103 on the side wall of the outer connecting pipe 101 can be inserted into the inner cavity of the clamping groove 102 until the clamping block 103 is attached to the bottom of the clamping groove 102. At this time, the threaded bolt 203 can be loosened, and the sliding block 2 slides into the inner cavity of the clamping groove 102 under the rebound force of the spring 201. Since the clamping block 103 is inserted into the inner cavity of the clamping groove 102 at this time, the sliding block 2 is attached to the side wall of the clamping block 103. Then, the connecting pipe 1 rotates the clamping block 103, and the clamping block 103 rotates in the inner cavity of the clamping groove 102. When the clamping hole 204 opened on the side wall of the clamping block 103 rotates to one side of the sliding block 2, the sliding block 2 will slide into the inner cavity of the clamping hole 204 under the elastic force of the spring 201, thereby completing the positioning of the clamping hole 204 and the outer connecting pipe 101.

[0032] The threaded bolt 203 is screwed with the connecting pipe 1, the threaded bolt 203 drives the sliding block 2 to extend into the inner cavity of the clamping hole 204 through the connecting column 202, thereby fixing the clamping block 103, and the external connecting pipe 101 is fixed and positioned, and then the fixing and installation of the protective shell 4 and the clamping ring 301 are completed, wherein the first sealing ring and the second sealing ring 3 strengthen the sealing effect of the connecting pipe 1 and the external connecting pipe 101, avoid heat leakage, the clamping ring 301 can not only reinforce the connection of the connecting pipe 1 and the external connecting pipe 101, but also can protect the second sealing ring 3, the protective shell 4 can protect the threaded bolt 203, avoid corrosion from the outside and cause rust damage, and facilitate subsequent disassembly.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe connecting structure for heating, ventilation and air conditioning, comprising a connecting pipe (1) and an external pipe (101), characterized in that: The connecting pipe (1) and the external pipe (101) are clamped with each other, the side wall of the connecting pipe (1) is provided with a clamping groove (102), the side wall of the external pipe (101) is fixedly connected with a clamping block (103), and the clamping block (103) can extend into the inner cavity of the clamping groove (102), and the connecting pipe (1) further comprises: The inner wall of the connecting pipe (1) is slidably connected with a sliding block (2) on both sides, a spring (201) is fixedly connected between the sliding block (2) and the inner wall of the connecting pipe (1), the sliding block (2) can be slid into the inner cavity of the clamping groove (102), the end of the sliding block (2) is rotatably connected with a connecting column (202), the connecting column (202) can penetrate through the connecting pipe (1), the end of the connecting column (202) is fixedly connected with a threaded bolt (203), and the threaded bolt (203) is threadedly connected with the side wall of the connecting pipe (1).

2. The pipe connection structure for heating, ventilation, and air conditioning according to claim 1, characterized by: The side wall of the clamping block (103) is provided with a clamping hole (204), and the sliding block (2) can extend into the inner cavity of the clamping hole (204).

3. The pipe connection structure for heating, ventilation and air conditioning according to claim 2, characterized by: The inner wall of the clamping groove (102) is fixedly connected with a first sealing ring, the end of the external pipe (101) is fixedly connected with a second sealing ring (3) outside the clamping block (103).

4. The pipe connection structure for heating, ventilation and air conditioning according to claim 3, characterized by: The connecting pipe (1) and the external pipe (101) are clamped with each other outside the second sealing ring (3), and the clamping ring (301) is threadedly connected with a fixing bolt between the clamping ring (301).

5. The pipe connection structure for heating, ventilation and air conditioning according to claim 4, characterized by: The side wall of the connecting pipe (1) is clamped with a protective shell (4) outside the threaded bolt (203), the side wall of the protective shell (4) is threadedly connected with a clamping bolt, and the clamping bolt can extend into the inner wall of the connecting pipe (1).

6. The pipe connection structure for heating, ventilation and air conditioning according to claim 5, characterized by: The sliding block (2) and the clamping hole (204) are one-to-one corresponding, and the sliding block (2) and the clamping hole (204) are provided as cylindrical bodies with the same diameter.

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