Water supply and drainage heating and ventilation reserved sleeve device

Abstract

The utility model relates to the technical field of water supply and drainage heating and ventilation, and discloses a water supply and drainage heating and ventilation reserved sleeve device which comprises a reserved sleeve and a central sleeve embedded in the reserved sleeve, and the outer side wall of the central sleeve is hinged to one ends of a plurality of sets of first connecting rods; the supporting rods are located on the peripheral side of the center sleeve and distributed at intervals, and the supporting rods are attached to the inner side wall of the reserved sleeve; the threaded rod is fixedly and slidably connected with the center sleeve in the axis direction of the reserved sleeve, the end, away from the center sleeve, of the threaded rod is in threaded connection with a threaded sleeve, the outer side wall of the threaded sleeve is rotationally connected with a driving ring, and one ends of a plurality of second connecting rods are hinged to the outer side wall of the driving ring; the other ends of the second connecting rods are hinged to the supporting rods in a one-to-one correspondence mode. Compared with a traditional structure, according to the reserved sleeves with different inner diameters, the rapid adjusting process of the supporting rod can be achieved through the structure that the threaded rod is fixedly and slidably connected with the center sleeve, the operation process of single screwing is reduced, and the adjusting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply, drainage and heating and ventilation, in particular to a water supply, drainage and heating and ventilation reserved casing device. Background Art

[0002] During the construction process, water supply and drainage pipes and HVAC pipes need to pass through walls or floors for connection. In order to ensure the safety and sealing of the pipes, it is usually necessary to reserve sleeves on the walls or floors.

[0003] The patent with announcement number CN217812358U discloses a reserved casing device for water supply, drainage and heating. The rotating rod of the patent drives the direction-changing gear to rotate, and then drives the bevel gear and the support screw sleeve to rotate. Under the action of the limit block and the limit groove, the support screw moves to the outside of the support round block, and the support screw drives the arc support block to move, so that the arc support block fits the inner wall of the reserved casing, which is convenient for fully supporting reserved casings of different diameters. However, the position adjustment process of the arc support block needs to be achieved entirely by twisting the rotating rod. When the position of the arc support block is far away from the inner wall of the reserved casing, the adjustment process takes a long time and will consume a lot of manpower costs.

[0004] In view of this, how to change the current situation in which the adjustment process of the reserved casing support structure of water supply, drainage and HVAC in the prior art is time-consuming and labor-intensive has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model aims to provide a water supply, drainage, heating and ventilation reserved casing device to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above purpose, the technical solution of the utility model is: a water supply, drainage, heating and ventilation reserved casing device, comprising:

[0007] A reserved sleeve and a central sleeve embedded in the reserved sleeve, wherein the outer side wall of the central sleeve is hinged with one end of a plurality of groups of first connecting rods;

[0008] A plurality of support rods are arranged at intervals around the central sleeve, the support rods are attached to the inner wall of the reserved sleeve and are parallel to the axis direction of the reserved sleeve, and the plurality of support rods are hingedly connected to the other ends of the plurality of groups of the first connecting rods in a one-to-one correspondence; and

[0009] A screw rod is fixedly and slidably connected to the central sleeve along the axial direction of the reserved sleeve, and the end of the screw rod away from the central sleeve is threadedly connected to a threaded sleeve, and the outer wall of the threaded sleeve is rotatably connected to a driving ring, and the outer wall of the driving ring is hinged to one end of a plurality of second connecting rods, and the other ends of the plurality of second connecting rods are hinged to a plurality of support rods one by one, and the second connecting rod connected to the same support rod intersects with the extension line of the first connecting rod.

[0010] Furthermore, an extension rod is provided at one end of the screw rod close to the center sleeve, the outer wall of the extension rod is provided with a first slide groove, a positioning blind hole is provided in the first slide groove, the side wall of the center sleeve is slidably connected with a positioning rod, and one end of the positioning rod is selectively slidably connected to the first slide groove or embedded in the positioning blind hole.

[0011] Furthermore, a plurality of the first slide grooves and the positioning rods are provided, and the plurality of the first slide grooves and the plurality of the positioning rods are arranged in one-to-one correspondence, the extension direction of the first slide groove is parallel to the axial direction of the reserved sleeve, the plurality of the first slide grooves are arranged at intervals in the circumferential direction along the outer wall of the extension rod, and the plurality of the positioning rods are slidably connected along the radial direction of the central sleeve.

[0012] Furthermore, the first slide groove is provided with a plurality of positioning blind holes at equal intervals along its length direction.

[0013] Furthermore, an operating ring is rotatably connected to the circumferential side of the central sleeve, and a plurality of wedge blocks are spaced apart along the circumferential direction of the operating ring. The other end of the positioning rod passes through the operating ring and the wedge blocks in sequence, and is slidably connected to the operating ring and the wedge blocks along the circumferential direction of the operating ring. The sliding of the wedge block along the circumferential direction of the operating ring can drive one end of the positioning rod to be embedded in or out of the positioning blind hole.

[0014] Further, a stepped hole is arranged on the side wall of the central sleeve, the large hole of the stepped hole is located on the side of the small hole of the stepped hole close to the first slide groove, a compression spring is arranged in the large hole of the stepped hole, one end of the compression spring is connected to the end wall of the large hole of the stepped hole, a positioning block is fixedly arranged at one end of the positioning rod, and the positioning block is connected to the other end of the compression spring;

[0015] The other end of the positioning rod sequentially passes through the operating ring and the wedge block and is vertically fixedly connected with a sliding pin, and the sliding pin is slidably connected with the wedge surface of the wedge block.

[0016] Furthermore, the outer wall of the operating ring is provided with a mounting groove, the wedge block is embedded in the mounting groove, and second sliding grooves are evenly provided on the operating ring and the wedge block, and the positioning rod is slidably connected to the second sliding groove along the circumferential direction of the operating ring.

[0017] Furthermore, the threaded sleeve is fixedly connected to an operating handwheel, and the operating handwheel is coaxially arranged with the threaded sleeve.

[0018] Furthermore, a circular arc plate is fixedly provided at one end of the support rod away from the first connecting rod, the circular arc concave surface of the circular arc plate is arranged toward the first connecting rod, and the circular arc convex surface of the circular arc plate is in contact with the inner wall of the reserved sleeve.

[0019] Furthermore, each group of the first connecting rods includes a plurality of first connecting rods arranged in parallel.

[0020] Compared with the prior art, the utility model has at least the following advantages:

[0021] When in use, the relative sliding between the screw rod and the center sleeve is utilized to change the distance between the drive ring and the center sleeve, so as to adjust the inclination angle of the first connecting rod and the second connecting rod, so that the distance between the support rod and the center sleeve is slightly smaller than the inner radius of the reserved sleeve, and then the center sleeve, support rod, screw and other structures are embedded in the reserved sleeve; the screw rod and the center sleeve are fixed, and the threaded sleeve and the screw rod are rotated relative to each other by screwing, and the distance between the drive ring and the center sleeve is adjusted again to achieve the effect of fine-tuning the inclination angle of the first connecting tube and the second connecting rod, and further achieve the effect of the support rod fitting against the inner wall of the reserved sleeve to support the reserved sleeve.

[0022] When taking out the central sleeve, support rod, screw and other structures from the reserved sleeve, it is only necessary to release the fixation between the screw and the central sleeve, so that the drive ring and the central sleeve can slide relative to each other and increase the distance between them. At this time, the support rod will move away from the inner wall of the reserved sleeve, thereby releasing the support between the support rod and the reserved sleeve. At this time, the central sleeve, support rod, screw and other structures can be taken out from the reserved sleeve.

[0023] Compared with the traditional structure, the support rod can be quickly adjusted according to the reserved sleeves with different inner diameters through the structure of fixed sliding connection between the screw and the center sleeve, which reduces the single screwing operation process, reduces the adjustment time, reduces the labor cost consumption, and improves the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is a schematic diagram of the overall structure of the water supply, drainage, heating and ventilation reserved casing device of the utility model;

[0026] Figure 2 This is a cross-sectional view of a reserved casing device for water supply, drainage, heating and ventilation of the utility model;

[0027] Figure 3 Another cross-sectional view of the reserved casing device for water supply, drainage, heating and ventilation of the utility model;

[0028] Figure 4 For this utility model Figure 3 A partial enlarged view of the middle A area;

[0029] Figure 5 It is a schematic diagram of the assembly of the screw rod, threaded sleeve, drive ring, second connecting rod, extension rod and operating hand wheel of the utility model;

[0030] Figure 6 It is an exploded view of the operating ring, wedge block, positioning rod, positioning block, compression spring and sliding pin of the utility model.

[0031] Figure markings: 1. reserved sleeve; 2. center sleeve; 3. support rod; 4. arc plate; 5. first connecting rod; 6. screw rod; 7. threaded sleeve; 8. drive ring; 9. second connecting rod; 10. extension rod; 11. positioning blind hole; 12. first slide groove; 13. positioning rod; 14. positioning block; 15. operating ring; 16. wedge block; 17. stepped hole; 18. compression spring; 19. sliding pin; 20. mounting groove; 21. second slide groove; 22. operating handwheel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Reference Figure 1-3The utility model provides a water supply and drainage HVAC reserved sleeve device, which is used to make a structure of a reserved sleeve 1 with internal support. When concrete pouring construction is carried out around the reserved sleeve 1, the deformation caused by squeezing the reserved sleeve 1 during the concrete solidification process can be effectively reduced, and the phenomenon of the reserved sleeve 1 becoming smaller or damaged can be reduced, thereby providing a good installation environment for the later installation and construction of HVAC pipes or water supply and drainage pipes.

[0035] The specific structure includes a reserved sleeve 1 and a central sleeve 2 inside it, a first connecting rod 5, a support rod 3, a screw rod 6, a threaded sleeve 7, a drive ring 8 and a second connecting rod 9. Among them, one end of several groups of first connecting rods 5 are hinged to the outer wall of the central sleeve 2. Each group of first connecting rods 5 includes multiple first connecting rods 5 arranged in parallel. Multiple support rods 3 are arranged around the central sleeve 2 and are arranged at intervals. These support rods 3 fit tightly with the inner wall of the reserved sleeve 1 and are arranged in parallel along the axial direction of the reserved sleeve 1. Each support rod 3 is hinged with the other end of a group of first connecting rods 5 to form a one-to-one correspondence. Along the axial direction of the reserved sleeve 1, a screw rod 6 is fixedly and slidably connected to the central sleeve 2. The end of the screw rod 6 away from the central sleeve 2 is connected to a threaded sleeve 7 through a thread, and the outer wall of the threaded sleeve 7 is rotatably connected to a drive ring 8. One end of a plurality of second connecting rods 9 is hinged on the outer side wall of the driving ring 8, and the other ends of the second connecting rods 9 are respectively hinged to the support rods 3. The extension line of the second connecting rod 9 connected to the same support rod 3 intersects with the extension line of the first connecting rod 5.

[0036] In a preferred embodiment of the present invention, a circular arc plate 4 is fixedly mounted on one end of the support rod 3 away from the first connecting rod 5 , with its concave surface facing the first connecting rod 5 and its convex surface fitting against the inner wall of the reserved sleeve 1 .

[0037] Reference Figure 2-5 As shown, an extension rod 10 is provided at one end of the screw rod 6 close to the center sleeve 2, and the outer wall thereof has a first slide groove 12. A positioning blind hole 11 is provided in the first slide groove 12. A positioning rod 13 is slidably connected to the side wall of the center sleeve 2, and one end of the positioning rod 13 can be selectively slidably connected to the first slide groove 12 or embedded in the positioning blind hole 11. When the positioning rod 13 is slidably connected to the first slide groove 12, the sliding effect between the extension rod 10 and the center sleeve 2 can be achieved. When one end of the positioning rod 13 is embedded in the positioning blind hole 11, the extension rod 10 and the center sleeve 2 can be fixed, and at this time, a relatively static working state can be achieved between the extension rod 10 and the center sleeve 2.

[0038] In a specific embodiment of the utility model, a plurality of first slide grooves 12 and positioning rods 13 are provided, and they are arranged one by one. The extension direction of the first slide groove 12 is parallel to the axial direction of the reserved sleeve 1, and the plurality of first slide grooves 12 are arranged at intervals in the circumferential direction along the outer wall of the extension rod 10, while the plurality of positioning rods 13 are slidably connected along the radial direction of the central sleeve 2. The first slide groove 12 has a plurality of positioning blind holes 11 arranged at equal intervals along its length direction.

[0039] Combined with reference Figure 6 An operating ring 15 is rotatably connected around the central sleeve 2, and a plurality of wedge blocks 16 are arranged at intervals in the circumferential direction of the central sleeve 2. The other end of the positioning rod 13 passes through the operating ring 15 and the wedge blocks 16 in sequence, and is slidably connected with them along the circumferential direction of the operating ring 15. The movement of the wedge blocks 16 along the circumferential direction of the operating ring 15 can drive one end of the positioning rod 13 to be inserted into or removed from the positioning blind hole 11.

[0040] A stepped hole 17 is provided on the side wall of the central sleeve 2, and the large hole of the stepped hole 17 is located on the side of the small hole of the stepped hole 17 close to the first slide groove 12. A compression spring 18 is installed in the large hole of the stepped hole 17, and one end of the compression spring 18 is connected to the end wall of the large hole of the stepped hole 17, and a positioning block 14 is fixedly provided at one end of the positioning rod 13, and the positioning block 14 is connected to the other end of the compression spring 18. The positioning block 14 can be selectively slidably connected to the first slide groove 12 or embedded in the positioning blind hole 11.

[0041] The other end of the positioning rod 13 passes through the operating ring 15 and the wedge block 16 , and is vertically fixedly connected with a sliding pin 19 , which is in sliding contact with the wedge surface of the wedge block 16 .

[0042] The side wall of the operating ring 15 is provided with a mounting groove 20, in which the wedge block 16 is embedded. The operating ring 15 and the wedge block 16 are evenly provided with second sliding grooves 21, and the positioning rod 13 is slidably connected with these second sliding grooves 21 along the circumferential direction of the operating ring 15.

[0043] In order to facilitate the operation of the threaded sleeve 7 , the threaded sleeve 7 is fixedly connected with an operating hand wheel 22 , and the operating hand wheel 22 is coaxially arranged with the threaded sleeve 7 .

[0044] The working principle of this utility model:

[0045] When in use, by screwing the operating ring 15, the larger end of the wedge block 16 is connected to the sliding pin 19, and the elastic force of the compression spring 18 can be overcome to make the positioning block 14 escape from the positioning blind hole 11. At this time, the positioning block 14 and the first slide groove 12 can slide relative to each other, and the relative sliding between the screw rod 6 and the center sleeve 2 is utilized to change the distance between the driving ring 8 and the center sleeve 2, so as to adjust the inclination angle of the first connecting rod 5 and the second connecting rod 9, so that the distance between the support rod 3 and the center sleeve 2 is slightly smaller than the inner radius of the reserved sleeve 1, and then the center sleeve 2, the support rod 3, the screw 6 and other structures are embedded in the reserved sleeve 1; reversely screw the operating ring 1 5, so that the smaller end of the wedge block 16 is connected to the sliding pin 19, and at this time, the positioning block 14 slides toward the positioning blind hole 11 under the action of the compression spring 18, and further makes the positioning block 14 embedded in one of the positioning blind holes 11, thereby realizing the relative fixation between the screw rod 6 and the center sleeve 2, and the threaded sleeve 7 is driven to rotate by screwing the operating hand wheel 22, so that the threaded sleeve 7 and the screw rod 6 rotate relative to each other, and the distance between the drive ring 8 and the center sleeve 2 is adjusted again to achieve the effect of fine-tuning the inclination angle of the first connecting tube and the second connecting rod 9, and further realize the effect of the support rod 3 being attached to the inner wall of the reserved sleeve 1, so as to achieve the support of the reserved sleeve 1.

[0046] When taking out the central sleeve 2, the support rod 3, the screw 6 and other structures inside the reserved sleeve 1, it is only necessary to release the fixation between the screw 6 and the central sleeve 2, and by screwing the operating ring 15, the larger end of the wedge block 16 is connected to the sliding pin 19, and the elastic force of the compression spring 18 can be overcome to make the positioning block 14 disengage from the positioning blind hole 11. At this time, the positioning block 14 and the first sliding groove 12 can slide relative to each other, and the relative sliding between the screw 6 and the central sleeve 2 is utilized to make the driving ring 8 and the central sleeve 2 slide relative to each other and increase the distance between the two. At this time, the support rod 3 will move away from the inner wall of the reserved sleeve 1, thereby releasing the support between the support rod 3 and the reserved sleeve 1, and the central sleeve 2, the support rod 3, the screw 6 and other structures can be taken out from the reserved sleeve 1.

[0047] Compared with the traditional structure, the support rod 3 can be quickly adjusted according to the reserved sleeve 1 with different inner diameters through the structure of fixed sliding connection between the screw 6 and the central sleeve 2, which reduces the single screwing operation process, reduces the adjustment time, reduces the labor cost consumption, and improves the adjustment efficiency.

[0048] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A reserved casing device for water supply, drainage and HVAC, characterized in that: include: A reserved sleeve (1) and a central sleeve (2) embedded in the reserved sleeve (1), wherein the outer side wall of the central sleeve (2) is hingedly connected to one end of a plurality of groups of first connecting rods (5); A plurality of support rods (3) are arranged at intervals around the central sleeve (2), the support rods (3) are fitted to the inner wall of the reserved sleeve (1) and are parallel to the axial direction of the reserved sleeve (1), and the plurality of support rods (3) are hingedly connected to the other ends of a plurality of groups of the first connecting rods (5) in a one-to-one correspondence; and A screw rod (6) is fixedly and slidably connected to the central sleeve (2) along the axial direction of the reserved sleeve (1), and one end of the screw rod (6) away from the central sleeve (2) is threadedly connected to a threaded sleeve (7), and the outer wall of the threaded sleeve (7) is rotatably connected to a driving ring (8), and the outer wall of the driving ring (8) is hinged with one end of a plurality of second connecting rods (9), and the other ends of the plurality of second connecting rods (9) are hinged with a plurality of support rods (3) in a one-to-one correspondence, and the second connecting rods (9) connected to the same support rod (3) and the extension lines of the first connecting rod (5) intersect.

2. The water supply, drainage, HVAC reserved casing device according to claim 1 is characterized in that: An extension rod (10) is provided at one end of the screw rod (6) close to the central sleeve (2), and a first slide groove (12) is arranged on the outer wall of the extension rod (10), and a positioning blind hole (11) is arranged in the first slide groove (12). A positioning rod (13) is slidably connected to the side wall of the central sleeve (2), and one end of the positioning rod (13) is selectively slidably connected to the first slide groove (12) or embedded in the positioning blind hole (11).

3. The water supply, drainage, HVAC reserved casing device according to claim 2 is characterized in that: A plurality of the first slide grooves (12) and the positioning rods (13) are provided, and the plurality of the first slide grooves (12) and the plurality of the positioning rods (13) are arranged in a one-to-one correspondence, the extension direction of the first slide groove (12) is parallel to the axial direction of the reserved sleeve (1), the plurality of the first slide grooves (12) are arranged at intervals in the circumferential direction along the outer wall of the extension rod (10), and the plurality of the positioning rods (13) are slidably connected along the radial direction of the central sleeve (2).

4. The water supply, drainage, HVAC reserved casing device according to claim 3 is characterized in that: The first sliding groove (12) is provided with a plurality of positioning blind holes (11) at equal intervals along its length direction.

5. The reserved casing device for water supply, drainage and HVAC according to claim 2 is characterized in that: The central sleeve (2) is rotatably connected to an operating ring (15) on its circumferential side, and a plurality of wedge blocks (16) are arranged at intervals along the circumferential direction of the operating ring (15). The other end of the positioning rod (13) passes through the operating ring (15) and the wedge blocks (16) in sequence, and is slidably connected to the operating ring (15) and the wedge blocks (16) along the circumferential direction of the operating ring (15). The sliding of the wedge blocks (16) along the circumferential direction of the operating ring (15) can drive one end of the positioning rod (13) to be embedded in or out of the positioning blind hole (11).

6. The reserved casing device for water supply, drainage and HVAC according to claim 5 is characterized in that: The side wall of the central sleeve (2) is provided with a stepped hole (17), the large hole of the stepped hole (17) is located on the side of the small hole of the stepped hole (17) close to the first slide groove (12), a compression spring (18) is arranged in the large hole of the stepped hole (17), one end of the compression spring (18) is connected to the end wall of the large hole of the stepped hole (17), and a positioning block (14) is fixedly arranged at one end of the positioning rod (13), and the positioning block (14) is connected to the other end of the compression spring (18); The other end of the positioning rod (13) passes through the operating ring (15) and the wedge block (16) in sequence and is vertically fixedly connected with a sliding pin (19), and the sliding pin (19) is slidably connected with the wedge surface of the wedge block (16).

7. The reserved casing device for water supply, drainage and HVAC according to claim 6 is characterized in that: The outer wall of the operating ring (15) is provided with a mounting groove (20), the wedge block (16) is embedded in the mounting groove (20), and second sliding grooves (21) are evenly distributed on the operating ring (15) and the wedge block (16), and the positioning rod (13) is slidably connected to the second sliding groove (21) along the circumferential direction of the operating ring (15).

8. The reserved casing device for water supply, drainage and HVAC according to claim 1 is characterized in that: The threaded sleeve (7) is fixedly connected to an operating hand wheel (22), and the operating hand wheel (22) is coaxially arranged with the threaded sleeve (7).

9. The water supply, drainage, HVAC reserved casing device according to claim 1, characterized in that: A circular arc plate (4) is fixedly provided at one end of the support rod (3) away from the first connecting rod (5); the circular arc concave surface of the circular arc plate (4) is arranged toward the first connecting rod (5); and the circular arc convex surface of the circular arc plate (4) fits with the inner wall of the reserved sleeve (1).

10. The water supply, drainage, HVAC reserved casing device according to claim 1, characterized in that: Each group of the first connecting rods (5) comprises a plurality of first connecting rods (5) arranged in parallel.

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