Integrated multifunctional valve group for front end of fan coil

Abstract

The utility model provides an integrated multifunctional valve group for the front end of a fan coil, and belongs to the technical field of pipeline systems, the integrated multifunctional valve group for the front end of the fan coil comprises the fan coil, a water inlet pipe and a water return pipe, the fan coil is used for adjusting temperature, the water inlet pipe is used for leading water into the fan coil, and the water return pipe is used for returning water to the fan coil. The fan coil is characterized in that a first three-way ball valve is arranged on the water inlet pipe, a second three-way ball valve is arranged on the water return pipe, a return pipe is detachably connected between the first three-way ball valve and the second three-way ball valve, and the first three-way ball valve and the second three-way ball valve are communicated with the return pipe. The return pipe is used for forming a new loop between the water inlet pipe and the water return pipe, the return pipe is provided with a dredging assembly, and the dredging assembly is used for preventing the return pipe from being blocked; the problems that when an existing fan coil pipeline is washed, frequent disassembly is needed, the washing efficiency is low, and the pipeline is prone to being blocked can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline systems, and in particular relates to an integrated multifunctional valve group for the front end of a fan coil unit. Background Art

[0002] During the construction of mechanical and electrical ventilation and air conditioning in my country's buildings, due to the current design of the valve group directly ventilates the fan coil. When flushing the system, the specifications and designs require that the flushing water cannot enter the fan coil, otherwise it will cause the copper tube in the fan coil to be blocked. In the prior art, the water inlet pipe and the return pipe are generally directly disassembled for cleaning to prevent sewage from entering the fan coil. Frequent disassembly and assembly are too cumbersome in the process and the cleaning efficiency is low. During the use of the pipeline, various impurities, particulate matter, sediments or grease may accumulate in the pipeline. These substances may adhere to the pipe wall and be flushed to the narrow part of the pipe during flushing, causing blockage. There are bends, manifolds and other parts in the pipeline, which are prone to accumulation of substances. During the flushing process, the flow rate may slow down, causing the substances originally deposited at the bends or manifolds to be flushed to these areas, forming a blockage.

[0003] In summary, the existing fan coil pipes have the problems of needing to be frequently disassembled and having low flushing efficiency during flushing, and the pipes are easily clogged. Utility Model Content

[0004] In view of this, the utility model provides an integrated multifunctional valve group for the front end of a fan coil unit, which can solve the problems that the existing fan coil unit pipelines need to be frequently disassembled during flushing, have low flushing efficiency, and are easily blocked.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an integrated multifunctional valve group for the front end of a fan coil unit, comprising a fan coil unit, a water inlet pipe and a water return pipe, wherein the fan coil unit is used to adjust the temperature, the water inlet pipe is used to draw water into the interior of the fan coil unit, and the water return pipe is used to draw water from the interior of the fan coil unit, wherein a first three-way ball valve is arranged on the water inlet pipe, a second three-way ball valve is arranged on the water return pipe, a return pipe is detachably connected between the first three-way ball valve and the second three-way ball valve, the return pipe is used to form a new circuit between the water inlet pipe and the return pipe, and the return pipe is provided with a dredging component, and the dredging component is used to prevent the return pipe from being blocked.

[0007] The utility model provides a front-end integrated multifunctional valve group for fan coil units with the following technical effects: by setting the fan coil unit, the temperature and air flow rate inside the area can be controlled; by setting the water inlet pipe, water can be introduced into the inside of the fan coil unit, thereby helping the fan coil unit to adjust the temperature; by setting the return pipe, the water source treated by the fan coil unit can be transported back to the boiler; by setting the return pipe, a new passage can be formed between the water inlet pipe and the return pipe, ensuring that sewage will not enter the inside of the fan coil unit during the cleaning of the water inlet pipe and the return pipe, which can avoid the corrosion of the components of the fan coil unit or the clogging of the copper pipe inside the fan coil unit, and can reduce unnecessary maintenance problems; by setting the first three-way ball valve and the second three-way ball valve, the flow direction of the water flow can be better controlled, the switching and control of the fluid between the three directions can be realized, the fluid can be guided to different pipeline systems to realize the distribution of the fluid between multiple pipelines, and at the same time, the fluid can be prevented from entering the fan coil unit; by setting the dredging component, the blocked return pipe can be effectively dredged, the return pipe can be kept unobstructed, and the fluid flowing through the return pipe can be prevented from being blocked.

[0008] On the basis of the above technical solution, the utility model can also make the following improvements to the integrated multifunctional valve group for the front end of the fan coil unit:

[0009] Among them, the dredging component includes a first spring, a pull plate and a connecting rod. The pull plate is a convex structure. One end of the pull plate is fixedly connected to one end of the first spring, and one end of the connecting rod is connected to the pull plate through a pin shaft. One end of the second spring is fixedly connected to the middle of the connecting rod, and the other end of the second spring is fixedly connected to the pull plate, and the other end of the pull plate is fixedly connected to one end of the pull rope, and the other end of the pull rope is fixedly connected to the rubber pad.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting the first spring, the pull plate can be driven to reset after being moved; by setting the pull plate, a gap can be created by relative movement with the inner wall of the return pipe to cause the blockage to shift and clear the return pipe; by setting the connecting rod, the pull plate can rotate when moving to squeeze the blockage, thereby applying downward force to the blockage to promote the clearing of the pipe; by setting a pull rope, the empty box pull plate can be manually slid along the slide groove to clear the pipe; by setting a rubber pad, the return pipe can be prevented from leaking, so that the return pipe forms an enclosed space.

[0011] Furthermore, a slide groove is provided on the inner wall of the reflux pipe, the slide groove is matched with the pull plate, and the other end of the first spring is fixedly connected to the inner wall of the slide groove.

[0012] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the sliding groove, the left and right movement of the pull plate can be limited to prevent the pull plate from slipping.

[0013] Furthermore, a groove is provided on the reflux pipe, a through hole is provided at the bottom of the groove, and the other end of the pull rope passes through the through hole and extends to the outside of the through hole.

[0014] Furthermore, the rubber pad is adapted to the groove.

[0015] The beneficial effect of adopting the above-mentioned improvement scheme is that by arranging the rubber pad, it is possible to utilize its own good elasticity and plasticity to adapt to the irregularities or tiny surface defects on the surface of the return pipe to form a good seal.

[0016] Furthermore, the water inlet pipe includes a first water inlet pipe and a second water inlet pipe, the first water inlet pipe is detachably connected to one port of the first three-way ball valve via a spiral pattern, the second water inlet pipe is detachably connected to another port of the first three-way ball valve via a thread, and one end of the reflux pipe is detachably connected to the third port of the first three-way ball valve via a thread.

[0017] The beneficial effect of adopting the above-mentioned improvement scheme is that by setting the first three-way ball valve and the second three-way ball valve, the direction of water flow can be effectively changed, which facilitates closing the water inlet channel to the fan coil when flushing the water inlet pipe and the return pipe.

[0018] Furthermore, the return pipe includes a first return pipe and a second return pipe, the first return pipe is detachably connected to one port of the second three-way ball valve through a thread, the second return pipe is detachably connected to another port of the second three-way ball valve through a thread, and the other end of the return pipe is detachably connected to the third port of the second three-way ball valve through a thread.

[0019] Furthermore, the angle between the connecting rod and the pull plate is 30°.

[0020] Furthermore, the number of the connecting rods is four, and they are evenly arranged on the pull plate.

[0021] Furthermore, the pull plate is slidably connected to the slide groove.

[0022] Compared with the prior art, the utility model provides a beneficial effect of an integrated multifunctional valve group for the front end of a fan coil unit: by setting up a fan coil unit, the temperature and air flow rate inside the area can be controlled; by setting up a water inlet pipe, water can be introduced into the interior of the fan coil unit, thereby helping the fan coil unit to adjust the temperature; by setting up a return pipe, the water source treated by the fan coil unit can be transported back to the boiler; by setting up a return pipe, a new passage can be formed between the water inlet pipe and the return pipe, ensuring that sewage will not enter the fan coil unit during the cleaning of the water inlet pipe and the return pipe. The interior of the fan coil unit can be prevented from being corroded by the components of the fan coil unit or from being clogged by the copper pipes inside the fan coil unit, thereby reducing unnecessary maintenance problems; by setting the first three-way ball valve and the second three-way ball valve, the flow direction of the water flow can be better controlled, the switching and control of the fluid between three directions can be realized, the fluid can be directed to different pipeline systems to realize the distribution of the fluid among multiple pipelines, and at the same time, the fluid can be prevented from entering the fan coil unit; by setting the dredging component, the blocked return pipe can be effectively dredged, the return pipe can be kept unobstructed, and the fluid flowing through the return pipe can be prevented from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of an integrated multifunctional valve group for the front end of a fan coil unit;

[0025] Figure 2 A schematic diagram of the internal structure of a return pipe of an integrated multifunctional valve group at the front end of a fan coil unit;

[0026] Figure 3 A top view of a dredging component for an integrated multifunctional valve group at the front end of a fan coil unit;

[0027] Figure 4 A cross-sectional view of a slideway for an integrated multifunctional valve group at the front end of a fan coil unit;

[0028] Figure 5 It is the structural diagram of A;

[0029] Figure 6 It is a structural diagram of B;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 10. Fan coil unit; 11. Water inlet pipe; 111. First water inlet pipe; 112. Second water inlet pipe; 12. Return pipe; 121. First return pipe; 122. Second return pipe; 13. First three-way ball valve; 14. Second three-way ball valve; 15. Return pipe; 16. Slide; 17. Clearing assembly; 171. First spring; 172. Pull plate; 173. Connecting rod; 174. Second spring; 175. Pull rope; 176. Rubber pad; 18. Through hole; 19. Groove. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-6 As shown, it is an embodiment of an integrated multifunctional valve group for the front end of a fan coil unit provided by the utility model. In this embodiment, it includes a fan coil unit 10, an inlet pipe 11 and a return pipe 12. The fan coil unit 10 is used to adjust the temperature, the inlet pipe 11 is used to draw water into the inside of the fan coil unit 10, and the return pipe 12 is used to draw water from the inside of the fan coil unit 10. The inlet pipe 11 is provided with a first three-way ball valve 13, and the return pipe 12 is provided with a second three-way ball valve 14. A return pipe 15 is detachably connected between the first three-way ball valve 13 and the second three-way ball valve 14. The return pipe 15 is used to form a new circuit between the inlet pipe 11 and the return pipe 12. The return pipe 15 is provided with a dredging component 17, and the dredging component 17 is used to prevent the return pipe 15 from being blocked.

[0034] When in normal use, water flows from the first water inlet pipe 111, passes through the first three-way ball valve 13, and then flows into the second water inlet pipe 112. The water in the second water inlet pipe 112 flows into the copper tube in the fan coil unit 10. The fan coil unit 10 processes the water, and the treated water flows out through the first return pipe 121, the second three-way ball valve 14, and then through the second return pipe 122.

[0035] When it is necessary to clean the inner walls of the water inlet pipe 11 and the water return pipe 12, since the cleaning water and the washed waste cannot enter the interior of the fan coil unit 10, it is usually chosen to disconnect the first water inlet pipe 111 from the first three-way ball valve 13, and disconnect the first water return pipe 121 from the second three-way ball valve 14 to clean the first water inlet pipe 111 and the first water return pipe 121 separately.

[0036] When cleaning, the present application does not need to be disassembled. The flow direction of the first three-way ball valve 13 and the second three-way ball valve 14 is controlled to be changed, so that the direction of the water flow is changed to enter from the first water inlet pipe 111, pass through the first three-way ball valve 13 and the return pipe 15, and then pass through the second three-way ball valve 14 and finally flow out from the first return pipe 121. When the return pipe 15 is blocked by dirt, the rubber pad 176 is removed from the groove 19 and the pull rope 175 is pulled outward. The pull rope 175 drives the pull plate 172 to slide along the direction of the slide groove 16. At this time, the first spring 171 is extended, and the movement of the pull plate 172 drives the pull plate 172 to move downward. Under the pressure of the blockage, the angle between the pull plate 172 and the pull plate 172 becomes larger, and the second spring 174 is extended; under the movement of the pull plate 172 and the connecting rod 173, a gap is generated between the inner wall of the return pipe 15 and the blockage, and the rotation of the connecting rod 173 causes the blockage to shift, thereby making the return pipe 15 unobstructed. When the pull rope 175 is released, the first spring 171 retracts and resets to drive the pull plate 172 to slide back, and the rubber pad 176 is re-sealed to prevent sewage from overflowing.

[0037] Among them, in the above technical scheme, the dredging component 17 includes a first spring 171, a pull plate 172 and a connecting rod 173, the pull plate 172 is a convex structure, one end of the pull plate 172 is fixedly connected to one end of the first spring 171, one end of the connecting rod 173 is connected to the pull plate 172 through a pin shaft, one end of the second spring 174 is fixedly connected to the middle part of the connecting rod 173, the other end of the second spring 174 is fixedly connected to the pull plate 172, the other end of the pull plate 172 is fixedly connected to one end of the pull rope 175, and the other end of the pull rope 175 is fixedly connected to the rubber pad 176.

[0038] Furthermore, in the above technical solution, a slide groove 16 is provided on the inner wall of the return pipe 15 , the slide groove 16 is matched with the pull plate 172 , and the other end of the first spring 171 is fixedly connected to the inner wall of the slide groove 16 .

[0039] Furthermore, in the above technical solution, a groove 19 is provided on the return pipe 15 , a through hole 18 is provided at the bottom of the groove 19 , and the other end of the pull rope 175 passes through the through hole 18 and extends to the outside of the through hole 18 .

[0040] Furthermore, in the above technical solution, the rubber pad 176 is adapted to the groove 19 .

[0041] Furthermore, in the above technical solution, the water inlet pipe 11 includes a first water inlet pipe 111 and a second water inlet pipe 112, the first water inlet pipe 111 is detachably connected to one port of the first three-way ball valve 13 through a spiral pattern, the second water inlet pipe 112 is detachably connected to another port of the first three-way ball valve 13 through a thread, and one end of the return pipe 15 is detachably connected to the third port of the first three-way ball valve 13 through a thread.

[0042] Furthermore, in the above technical solution, the return pipe 12 includes a first return pipe 121 and a second return pipe 122, the first return pipe 121 is detachably connected to one port of the second three-way ball valve 14 through a thread, the second return pipe 122 is detachably connected to another port of the second three-way ball valve 14 through a thread, and the other end of the return pipe 15 is detachably connected to the third port of the second three-way ball valve 14 through a thread.

[0043] Furthermore, in the above technical solution, the angle between the connecting rod 173 and the pulling plate 172 is 30°.

[0044] Furthermore, in the above technical solution, the number of connecting rods 173 is four, and they are evenly arranged on the pull plate 172 .

[0045] Furthermore, in the above technical solution, the pull plate 172 is slidably connected to the slide groove 16 .

[0046] Specifically, the principle of the utility model is: to control and change the flow direction of the first three-way ball valve 13 and the second three-way ball valve 14, so that the direction of the water flow is changed to enter from the first water inlet pipe 111, pass through the first three-way ball valve 13 and the return pipe 15, and then pass through the second three-way ball valve 14 and finally flow out from the first return pipe 121. When the return pipe 15 is blocked by dirt, the rubber pad 176 is removed from the groove 19 and the pull rope 175 is pulled outward. The pull rope 175 drives the pull plate 172 to slide along the direction of the slide groove 16. At this time, the first spring 171 is extended, and the movement of the pull plate 172 drives the pull plate 172 to move downward. Under the pressure of the blockage, the angle between the pull plate 172 and the pull plate 172 becomes larger, and the second spring 174 is extended; under the movement of the pull plate 172 and the connecting rod 173, a gap is generated between the inner wall of the return pipe 15 and the blockage, and the rotation of the connecting rod 173 causes the blockage to shift, thereby making the return pipe 15 unobstructed. When the pull rope 175 is released, the first spring 171 retracts and resets to drive the pull plate 172 to slide back, and the rubber pad 176 is re-sealed to prevent sewage from overflowing.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An integrated multifunctional valve group for the front end of a fan coil unit, comprising a fan coil unit (10), a water inlet pipe (11) and a water return pipe (12), wherein the fan coil unit (10) is used to adjust the temperature, the water inlet pipe (11) is used to draw water into the interior of the fan coil unit (10), and the water return pipe (12) is used to draw water from the interior of the fan coil unit (10). It is characterized in that The water inlet pipe (11) is provided with a first three-way ball valve (13), and the water return pipe (12) is provided with a second three-way ball valve (14); a return pipe (15) is detachably connected between the first three-way ball valve (13) and the second three-way ball valve (14); the return pipe (15) is used to form a new circuit between the water inlet pipe (11) and the water return pipe (12); the return pipe (15) is provided with a dredging component (17); the dredging component (17) is used to prevent the return pipe (15) from being blocked.

2. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 1, It is characterized in that The dredging component (17) includes a first spring (171), a pull plate (172) and a connecting rod (173); the pull plate (172) is a convex structure; one end of the pull plate (172) is fixedly connected to one end of the first spring (171); one end of the connecting rod (173) is connected to the pull plate (172) via a pin; one end of a second spring (174) is fixedly connected to the middle of the connecting rod (173); the other end of the second spring (174) is fixedly connected to the pull plate (172); the other end of the pull plate (172) is fixedly connected to one end of a pull rope (175); and the other end of the pull rope (175) is fixedly connected to a rubber pad (176).

3. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 2, It is characterized in that A slide groove (16) is provided on the inner wall of the return pipe (15), the slide groove (16) is matched with the pull plate (172), and the other end of the first spring (171) is fixedly connected to the inner wall of the slide groove (16).

4. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 3, It is characterized in that The return pipe (15) is provided with a groove (19), the bottom of the groove (19) is provided with a through hole (18), and the other end of the pull rope (175) passes through the through hole (18) and extends to the outside of the through hole (18).

5. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 4, It is characterized in that The rubber pad (176) is adapted to the groove (19).

6. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 5, It is characterized in that The water inlet pipe (11) comprises a first water inlet pipe (111) and a second water inlet pipe (112); the first water inlet pipe (111) is detachably connected to one port of the first three-way ball valve (13) via a spiral pattern; the second water inlet pipe (112) is detachably connected to the other port of the first three-way ball valve (13) via a thread; and one end of the return pipe (15) is detachably connected to the third port of the first three-way ball valve (13) via a thread.

7. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 6, It is characterized in that The water return pipe (12) comprises a first water return pipe (121) and a second water return pipe (122); the first water return pipe (121) is detachably connected to one port of the second three-way ball valve (14) via a thread; the second water return pipe (122) is detachably connected to the other port of the second three-way ball valve (14) via a thread; and the other end of the return pipe (15) is detachably connected to the third port of the second three-way ball valve (14) via a thread.

8. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 7, It is characterized in that The angle between the connecting rod (173) and the pulling plate (172) is 30°.

9. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 8, It is characterized in that The number of the connecting rods (173) is four, and they are evenly arranged on the pulling plate (172).

10. The integrated multifunctional valve group for the front end of a fan coil unit according to claim 9, It is characterized in that The pull plate (172) is slidably connected to the slide groove (16).

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