Flange reducer

Abstract

The utility model discloses a flange reducer, which relates to the technical field of flange reducers and comprises a reducer main body and flange plates detachably arranged at two ends of the reducer main body, a plurality of buffer grooves are arranged on the outer walls of two ends of the reducer main body in a surrounding manner, and positioning grooves corresponding to the buffer grooves are arranged on the inner walls of the flange plates. A buffer groove is formed in the reducer main body, a positioning insert used for fastening a flange plate is arranged in the buffer groove, annular rotation supply grooves are further formed in the outer walls of the two ends of the reducer main body, extrusion parts matched with the positioning insert are arranged in the annular rotation supply grooves, the positioning insert comprises a positioning insert block which is slidably arranged in the buffer groove in a right trapezoid shape, and the bevel edge of the positioning insert block deviates from the positioning groove; through the arrangement of the positioning plug-in unit and the extrusion part, on the premise of ensuring the stability of the flange plate when the flange plate is used at the end part of the reducer main body, the flange plate can be detached and replaced independently by personnel when the flange plate is damaged, so that serious material waste caused by integral replacement of the reducer main body and the flange plate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flange reducers, and specifically relates to a flange reducer. Background Art

[0002] Reducers are used for connecting two pipes with different diameters, and are divided into concentric reducers and eccentric reducers. Referring to pipe fittings, the materials of reducing pipes include stainless steel reducing pipes, alloy steel, carbon steel reducing pipes, etc.

[0003] In the prior art, flange plates are configured at both ends of the reducer to facilitate the connection between the reducer and the pipeline. However, in reality, the flange plate and the reducer are mostly integrally formed. Once the flange plate is severely damaged due to being bumped during the transportation of the reducer, personnel often need to replace the flange plate and the reducer as a whole, which will seriously cause waste of materials and affect the practicability. Summary of the Utility Model

[0004] To solve the above technical problems, a flange reducer is provided, which solves the problem that in the prior art, the flange plate and the reducer are mostly integrally formed. Once the flange plate is severely damaged due to being bumped during the transportation of the reducer, personnel often need to replace the flange plate and the reducer as a whole, which will seriously cause waste of materials.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a flange reducer, including a reducer main body and flange plates detachably arranged at both ends of the reducer main body. A plurality of buffer grooves are circumferentially formed on the outer walls at both ends of the reducer main body. Positioning grooves corresponding to the buffer grooves are formed on the inner walls of the flange plates. Positioning plugs for fastening the flange plates are arranged in the buffer grooves. Annular supply rotation grooves are also formed on the outer walls at both ends of the reducer main body. Extrusion components matched with the positioning plugs are arranged in the annular supply rotation grooves;

[0006] The positioning plug includes a positioning block in the shape of a right trapezoid slidably arranged in the buffer groove, and the hypotenuse of the positioning block faces away from the positioning groove;

[0007] The extrusion component includes an internal thread cylinder located below the buffer groove and vertically rotatably arranged on the inner wall of the bottom end of the annular supply rotation groove. An external thread block is threadedly connected to the inside of the internal thread cylinder, and a pressing rod is vertically fixed on the external thread block.

[0008] Preferably, a penetration and contraction groove communicating with the inside of the annular supply rotation groove is formed on the inner wall of one end of the buffer groove. The end of the pressing rod is elliptical, and the end of the pressing rod penetrates into the penetration and contraction groove and corresponds to the hypotenuse of the buffer groove.

[0009] Preferably, the positioning plug-in further includes a sliding slot opened at the top end of the positioning block and a fixing piece slidably disposed in the sliding slot and fixedly connected to the inner wall of the top end of the buffer slot perpendicularly. A return spring is fixedly connected between the fixing piece and the inner wall of one side of the sliding slot.

[0010] Preferably, the extrusion member further includes an internal gear disk vertically rotatably disposed between the inner walls of both ends of the annular rotation groove. A gear meshing with the internal tooth surface of the internal gear disk is tightly sleeved on the pipe body of the internal thread cylinder. A plurality of handles are fixedly connected around the outer wall of the internal gear disk.

[0011] Preferably, circular positioning plates are attached to the corresponding surfaces of the two flange plates. The positioning plates are tightly sleeved on the outer wall of the reducing head body, and a plurality of positioning columns are fixedly arranged around the positioning plates. Positioning holes adapted to the positioning columns are opened on the flange plates.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] (1) Through the arrangement of the positioning plug-in and the extrusion member, on the premise of ensuring the stability of the flange plate when used at the end of the reducing head body, it is convenient for personnel to separately disassemble and replace the flange plate when it is damaged, so as to avoid the overall replacement of the reducing head body and the flange plate, resulting in serious material waste.

[0014] (2) Through the arrangement of the positioning holes and the positioning columns, when the flange plate is sleeved on the end of the reducing head body, the positioning columns need to be aligned and inserted into the positioning holes. In this way, the positioning holes and the positioning columns cooperate with each other, so that after the flange plate is sleeved on the end of the reducing head body, the positioning groove and the buffer groove are in corresponding positions, facilitating the subsequent extension of the positioning block towards the inside of the positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the partial external structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the partial internal structure of the present utility model;

[0018] Figure 4 is the present utility model Figure 3 schematic diagram of the structure at A in;

[0019] Figure 5 is the present utility model Figure 4 schematic diagram of the structure at B in.

[0020] The reference numerals in the drawings are:

[0021] 1. Reducing head body; 2. Flange; 3. Buffer groove; 4. Positioning groove; 5. Positioning plug; 6. Fixed piece; 7. Return spring; 8. Annular rotation groove; 9. Internal thread cylinder; 10. External thread block; 11. Pressure rod; 12. Internal gear disc; 13. Gear; 14. Handle; 15. Positioning plate; 16. Positioning column. Detailed implementation manner

[0022] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0023] Referring to Figures 1-5 As shown, a flange reducing head includes a reducing head body 1 and flanges 2 detachably arranged at both ends of the reducing head body 1. A plurality of buffer grooves 3 are circumferentially formed on the outer walls at both ends of the reducing head body 1. Positioning grooves 4 corresponding to the buffer grooves 3 are formed on the inner walls of the flanges 2. A positioning plug for fastening the flange 2 is arranged in the buffer groove 3. An annular rotation groove 8 is also formed on the outer walls at both ends of the reducing head body 1, and an extrusion component cooperating with the positioning plug is arranged in the annular rotation groove 8;

[0024] Through the arrangement of the positioning plug and the extrusion component, on the premise of ensuring the stability of the flange 2 when used at the end of the reducing head body 1, it is convenient for personnel to separately disassemble and replace the flange 2 when it is damaged, so as to avoid the overall replacement of the reducing head body 1 and the flange 2, resulting in serious material waste.

[0025] Furthermore, referring to Figure 5 As shown, it should be noted that the positioning plug includes a positioning block 5 with a right-angled trapezoidal shape slidably arranged in the buffer groove 3, and the hypotenuse of the positioning block 5 faces away from the positioning groove 4;

[0026] The extrusion component includes an internal thread cylinder 9 located below the buffer groove 3 and vertically rotatably arranged on the inner wall of the bottom end of the annular rotation groove 8. An external thread block 10 is threadedly connected to the inside of the internal thread cylinder 9, and a pressure rod 11 is vertically fixed on the external thread block 10;

[0027] A penetration and contraction groove communicating with the inside of the annular rotation groove 8 is formed on the inner wall at one end of the buffer groove 3. The end of the pressure rod 11 is elliptical, and the end of the pressure rod 11 penetrates into the penetration and contraction groove and corresponds to the hypotenuse of the buffer groove 3;

[0028] By controlling the rotation of the internal thread cylinder 9, the external thread block 10 can slide upward on the inside of the internal thread cylinder 9 under the thread structure and push the pressure rod 11, so that the pressure rod 11 penetrates into the buffer groove 3 from the penetration and contraction groove. In this way, the end of the pressure rod 11 abuts against the hypotenuse of the positioning block 5, which can cause the positioning block 5 to be passively pressurized and penetrate into the positioning groove 4 to fasten the flange 2.

[0029] Further, with reference to Figure 5 As shown, it is worth noting that the positioning plug-in further includes a sliding slot opened at the top end of the positioning plug 5 and a fixing piece 6 slidably disposed in the sliding slot and fixedly connected perpendicular to the inner wall of the top end of the buffer slot 3. A return spring 7 is fixedly connected between the fixing piece 6 and the inner wall of one side of the sliding slot;

[0030] During the process of the positioning plug 5 being squeezed and inserted into the positioning slot 4, the fixing piece 6 can remain fixed in the sliding slot and compress the return spring 7 to deform. Thus, when the inner threaded cylinder 9 is rotated in the reverse direction, causing the pressure rod 11 to reduce the extrusion on the positioning plug 5, the positioning plug 5 can actively contract inside the buffer slot 3 under the elastic force of the return spring 7 and withdraw from the inside of the positioning slot 4, releasing the fixing effect on the flange 2.

[0031] Further, with reference to Figure 4 As shown, it is worth noting that the extrusion component further includes an internal gear disk 12 vertically rotatably disposed between the inner walls of both ends of the annular rotation supply slot 8. A gear 13 meshing with the internal tooth surface of the internal gear disk 12 is tightly sleeved on the pipe body of the inner threaded cylinder 9. A plurality of handles 14 are fixedly connected around the outer wall of the internal gear disk 12;

[0032] When the handle 14 is rotated, during the rotation of the internal gear disk 12, its internal tooth surface can continuously mesh with the gear 13, thereby supplying rotation to the inner threaded cylinder 9 and providing a rotational force for the inner threaded cylinder 9.

[0033] Further, with reference to Figure 4 and Figure 5 As shown, it is worth noting that circular positioning plates 15 are attached to the corresponding surfaces of the two flanges 2. The positioning plates 15 are tightly sleeved on the outer wall of the reducer body 1, and a plurality of positioning columns 16 are fixedly arranged around the positioning plates 15. Positioning holes adapted to the positioning columns 16 are opened on the flanges 2;

[0034] Through the arrangement of the positioning holes and the positioning columns 16, when the flange 2 is sleeved on the end of the reducer body 1, the positioning columns 16 need to be aligned and inserted into the positioning holes. In this way, the positioning holes and the positioning columns 16 cooperate, enabling the positioning slot 4 and the buffer slot 3 to be in corresponding positions after the flange 2 is sleeved on the end of the reducer body 1, facilitating the subsequent extension of the positioning plug 5 towards the inside of the positioning slot 4.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A flange reducer, comprising a reducer body (1) and flanges (2) detachably arranged at both ends of the reducer body (1), characterized in that: A plurality of buffer grooves (3) are formed around the outer walls of both ends of the reducer main body (1); a positioning groove (4) corresponding to the buffer groove (3) is formed on the inner wall of the flange (2); a positioning plug-in for fastening the flange (2) is arranged in the buffer groove (3); an annular rotation supply groove (8) is formed on the outer walls of both ends of the reducer main body (1); an extrusion component matching the positioning plug-in is arranged in the annular rotation supply groove (8); The positioning plug-in unit comprises a positioning plug-in block (5) in a right-angle trapezoidal shape and slidably disposed in the buffer groove (3), and the oblique side of the positioning plug-in block (5) faces away from the positioning groove (4); The extrusion component comprises an internal threaded barrel (9) located below the buffer groove (3) and vertically rotatably arranged on the inner wall of the bottom end of the annular supply groove (8); an external threaded block (10) is threadedly connected to the inner side of the internal threaded barrel (9); and a pressure rod (11) is vertically fixed on the external threaded block (10).

2. A flange reducer according to claim 1, characterized in that: A through-contraction groove communicating with the inner side of the annular rotation supply groove (8) is provided on the inner wall of one end of the buffer groove (3); the end of the pressure rod (11) is elliptical, and the end of the pressure rod (11) penetrates into the through-contraction groove and corresponds to the oblique side of the buffer groove (3).

3. The flange reducer according to claim 1, characterized in that: The positioning plug-in unit also includes a sliding slot formed at the top end of the positioning plug-in unit (5) and a fixing plate (6) slidably disposed in the sliding slot and fixedly connected perpendicularly to the inner wall at the top end of the buffer groove (3); a return spring (7) is fixedly connected between the fixing plate (6) and the inner wall on one side of the sliding slot.

4. The flange reducer according to claim 1, characterized in that: The extrusion component also includes an internal toothed disc (12) which is vertically rotatably arranged between the inner walls at both ends of the annular rotation supply groove (8); a gear (13) which meshes with the inner tooth surface of the internal toothed disc (12) is tightly sleeved on the tube body of the internal threaded tube (9); and a plurality of handles (14) are fixedly connected around the outer wall of the internal toothed disc (12).

5. The flange reducer according to claim 1, characterized in that: A circular ring-shaped positioning plate (15) is attached to the corresponding side of the two flanges (2), the positioning plate (15) is tightly sleeved on the outer wall of the reducer and reducer body (1), and a plurality of positioning columns (16) are fixed around the positioning plate (15), and positioning holes matched with the positioning columns (16) are opened on the flanges (2).

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