Regulating valve for central air-conditioning system

Abstract

The utility model relates to the technical field of regulating valves, in particular to a regulating valve for a central air-conditioning system, which comprises a valve body, a first air vent and a second air vent are fixedly connected in the valve body, a connecting end cover is fixedly connected on the outer side of the valve body, an upper sealing seat is arranged on the outer side of the connecting end cover, and a lower sealing seat is arranged on the outer side of the upper sealing seat. A sealing assembly is arranged in the upper sealing seat; the sealing assembly comprises filler arranged on the side face of the inner wall of the upper sealing seat, the outer side of the filler is fixedly connected with a filler pressing sleeve, and the outer side of the filler pressing sleeve is fixedly connected with a pressing plate. The flow direction of fluid can be changed through the first ventilation opening and the second ventilation opening with the inner walls arranged in a curve mode, the fluid can generate certain rotation and buffering at the curve position, the flow speed and impact force of the fluid are reduced, and therefore noise generated when the fluid flows in the valve is effectively reduced, and the service life of the valve is prolonged. And the filler consists of two graphite sealing rings, one graphite and a stainless steel wire gasket, so that the medium leakage is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of governing valve, especially in central air conditioning system governing valve. BACKGROUND

[0002] According to the actual demand of air conditioning system, the air supply and return air volume are accurately adjusted to meet the requirements of different rooms or areas on temperature, humidity and air quality. For example, in the meeting room with many people, a large air supply volume is needed to keep the air fresh and suitable temperature, while in the office with few people, the air supply volume can be appropriately reduced to save energy.

[0003] For the above-mentioned related technology, the defects of the existing regulating valve are that when the pressure of the air conditioning system fluctuates greatly, the pressure difference before and after the regulating valve changes greatly, causing unstable flow of air when passing through the valve, and thus causing noise. Therefore, the utility model provides a regulating valve for central air conditioning system. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a regulating valve for central air conditioning system to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a regulating valve for central air conditioning system, comprising a valve body, a first air vent fixedly connected in the valve body, a second air vent fixedly connected in the valve body, a connection end cover fixedly connected to the outer side of the valve body, an upper sealing seat provided on the outer side of the connection end cover, and a sealing assembly provided in the upper sealing seat; the sealing assembly comprises a packing provided on the inner wall side of the upper sealing seat, a packing pressing sleeve fixedly connected to the outer side of the packing, and a pressing plate fixedly connected to the outer side of the packing pressing sleeve.

[0006] Preferably, a limiting bolt is provided on the outer side of the pressing plate, a threaded hole matched with the limiting bolt is formed on the outer side of the pressing plate, and a limiting nut is threadedly connected to the outer side of the limiting bolt.

[0007] Preferably, a plurality of bolts are provided on the outer side of the upper sealing seat, threaded grooves matched with the bolts are formed on the outer sides of the upper sealing seat and the connection end cover, and nuts are threadedly connected to the outer sides of the bolts.

[0008] Preferably, a screw rod is slidingly connected to the inner side of the pressing plate, a pressing block is fixedly connected to one end of the screw rod, and a valve flap matched with the valve body is fixedly connected to the bottom end of the pressing block.

[0009] Preferably, a soundproof cover is provided at both ends of the valve body, and a handle is fixedly connected to one end of the screw rod.

[0010] Preferably, the outer side of the upper sealing seat is fixedly connected with a supporting rod, one end of the supporting rod is fixedly connected with a fixing ring, the inner wall side of the fixing ring is provided with an internal thread, and the screw rod is in sliding connection with the inner wall side of the fixing ring.

[0011] In conclusion, the technical effects and advantages of the utility model are as follows:

[0012] In the utility model, the first air vent and the second air vent which are arranged in the form of a curved channel can change the flow direction of fluid, make fluid generate certain rotation and buffering at the curved channel, reduce the flow rate and impact force of fluid, thereby effectively reducing the noise generated when fluid flows in the valve, and the packing is composed of two graphite sealing rings, one graphite and a stainless steel wire gasket, thereby effectively preventing medium leakage. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0014] Figure 1 It is a first perspective view of the axial side structure of the utility model;

[0015] Figure 2 It is a second perspective view of the axial side structure of the utility model;

[0016] Figure 3 It is Figure 1 A enlarged structure schematic view of the utility model;

[0017] Figure 4 It is Figure 2 A enlarged structure schematic view of the utility model.

[0018] In the drawing: 1, valve body; 2, soundproof cover; 3, connecting end cover; 4, upper sealing seat; 5, nut; 6, bolt; 7, screw rod; 8, handle; 9, pressing plate; 10, limiting bolt; 11, packing; 12, first air vent; 13, pressing block; 14, valve flap; 15, second air vent; 16, limiting nut; 17, packing pressing sleeve; 18, supporting rod; 19, fixing ring. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0020] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense. For example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; or can be connected internally between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0021] Embodiment one: reference Figures 1-4The utility model provides a kind of regulating valve for central air conditioning system, including valve body 1, valve body 1 plays the basic role of bearing and connecting other components, ensure the structural stability of entire regulating valve, its inside fixedly connected with first air vent 12, first air vent 12 is used to guide the airflow in air conditioning system into valve body, control the inflow direction and flow size of airflow, valve body 1 is fixedly connected with second air vent 15 in, and second air vent 15 is responsible for the airflow after being regulated by valve body and is exported, is connected with subsequent air conditioning system pipeline, realizes the circulation regulation of airflow, the outside of valve body 1 is fixedly connected with connecting end cover 3, connecting end cover 3 is used to close the outside portion of valve body 1, prevent dust, sundries etc. From entering valve body interior influence regulating valve normal work, simultaneously provide installation foundation for other components, the outside of connecting end cover 3 is provided with upper sealing seat 4, upper sealing seat 4 can further enhance the sealing property of regulating valve, prevent airflow from leaking from the connecting place of valve body and connecting end cover 3, sealing assembly is provided in upper sealing seat 4;Sealing assembly includes the filler 11 being set in the inner wall side surface of upper sealing seat 4, filler 11 can fill gap, play the sealing effect, effectively prevent airflow leakage, ensure that the sealing performance of regulating valve is good, the outside of filler 11 is fixedly connected with filler pressing sleeve 17, and filler pressing sleeve 17 is used to compress filler 11, so that filler better plays the sealing effect, guarantee the stability of sealing effect under different working conditions. The outside of filler pressing sleeve 17 is fixedly connected with pressing plate 9, and pressing plate 9 can uniformly pass the pressure to filler pressing sleeve 17, so that the compressing force distribution of filler pressing sleeve 17 to filler 11 is more uniform, to improve overall sealing effect;The outside of pressing plate 9 is provided with limiting bolt 10, limiting bolt 10 can adjust the position of pressing plate 9, to adjust the compressing degree of filler pressing sleeve 17 and filler 11, realize the flexible adjustment of sealing effect. Threaded hole is set on the outside of pressing plate 9 and is matched with limiting bolt 10, to facilitate the installation and adjustment of limiting bolt 10, the outside of limiting bolt 10 is threadedly connected with limiting nut 16, and limiting nut 16 is used to fix the position of limiting bolt 10, prevent it from loosening due to vibration etc. In working process, ensure that the position of each component is stable when regulating valve is running, maintain good sealing performance and working state.

[0022] Example two: reference Figures 1-4, based on the same concept as the above embodiment one, the present embodiment also proposes that the outer side of the upper sealing seat 4 is provided with a plurality of bolts 6, which is used for connecting the upper sealing seat 4 and the connecting end cover 3. By screwing the bolts 6 with the outer side of the upper sealing seat 4 and the connecting end cover 3, the tight fixed connection of the two can be realized, the sealing of the connecting part is ensured, the medium leakage is prevented, the outer side of the bolt 6 is threadedly connected with the nut 5, the nut 5 is used in cooperation with the bolt 6, the further fastening connection is realized, the stability of the connection is enhanced, the loosening of the bolt 6 caused by vibration and other reasons during the operation of the equipment is prevented; the inner side of the pressing plate 9 is slidingly connected with the screw rod 7, the screw rod 7 can smoothly slide in the pressing plate 9, and the screw rod 7 provides a guiding action for the movement of the pressing block 13 and the valve disc 14, one end of the screw rod 7 is fixedly connected with the pressing block 13, and the pressing block 13 can transmit the acting force of the screw rod 7 to the valve disc 14. The bottom end of the pressing block 13 is fixedly connected with the valve disc 14 matched with the valve body 1, and the valve disc 14 is used for controlling the flow of the medium in the valve body 1. When the screw rod 7 drives the pressing block 13 to move, the valve disc 14 acts accordingly, thereby realizing the control of the medium flow, on-off and the like in the valve body 1; the both ends of the valve body 1 are provided with the soundproof cover 2, which can effectively reduce the noise generated during the operation of the equipment to the outside, and has the effect of sound insulation and noise reduction, thereby improving the working environment. One end of the screw rod 7 is fixedly connected with the handle 8, which facilitates the operator to rotate the screw rod 7, thereby easily controlling the lifting of the screw rod 7, and further controlling the action of the valve disc 14; the outer side of the upper sealing seat 4 is fixedly connected with the supporting rod 18, which supports and stabilizes the upper sealing seat 4, thereby enhancing the stability of the upper sealing seat 4 in the equipment. One end of the supporting rod 18 is fixedly connected with the fixed ring 19, which provides a stable support and sliding track for the screw rod 7. The inner wall side of the fixed ring 19 is provided with an internal thread, and the screw rod 7 is slidingly connected with the inner wall side of the fixed ring 19. During the rotation of the screw rod 7, the internal thread of the fixed ring 19 can guide the screw rod 7 to move stably and linearly, thereby ensuring the accuracy and stability of the lifting action of the valve disc 14.

[0023] The utility works as follows: the handle 8 drives the screw rod 7 to rotate, the valve disc 14 is driven by the pressing block 13 to move upward or downward, the flow rate of the air passage between the first air passage 12 and the second air passage 15 is adjusted, and the inner wall curves of the first air passage 12 and the second air passage 15 are arranged, so that the fluid flows in the straight way with high speed and single direction, and a large impact force and noise are easily generated. The design of the curve can change the flow direction of the fluid, so that the fluid generates certain rotation and buffering at the curve, the flow rate and impact force of the fluid are reduced, thereby effectively reducing the noise generated when the fluid flows in the valve, and providing a more quiet indoor environment for the user. The filler 11 is composed of two graphite sealing rings, one graphite and a stainless steel wire gasket, which effectively prevents medium leakage.

[0024] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A regulating valve for central air conditioning systems, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected with a first vent (12), the valve body (1) is fixedly connected with a second vent (15), the outer side of the valve body (1) is fixedly connected with a connecting end cover (3), the outer side of the connecting end cover (3) is provided with an upper sealing seat (4), and the upper sealing seat (4) is provided with a sealing assembly. The sealing assembly comprises a packing (11) arranged on the inner wall side of the upper sealing seat (4), the outer side of the packing (11) is fixedly connected with a packing pressing sleeve (17), and the outer side of the packing pressing sleeve (17) is fixedly connected with a pressing plate (9).

2. The regulating valve for a central air conditioning system according to claim 1, wherein: The outer side of the pressing plate (9) is provided with a limiting bolt (10), the outer side of the pressing plate (9) is provided with a threaded hole matched with the limiting bolt (10), and the outer side of the limiting bolt (10) is threadedly connected with a limiting nut (16).

3. The regulating valve for a central air conditioning system according to claim 2, wherein: The outer side of the upper sealing seat (4) is provided with a plurality of bolts (6), and the outer sides of the upper sealing seat (4) and the connecting end cover (3) are provided with threaded grooves matched with the bolts (6), and the outer sides of the bolts (6) are threadedly connected with nuts (5).

4. The control valve for a central air conditioning system according to claim 1, wherein: The inner side of the pressing plate (9) is slidably connected with a screw rod (7), one end of the screw rod (7) is fixedly connected with a pressing block (13), and the bottom end of the pressing block (13) is fixedly connected with a valve clack (14) matched with the valve body (1).

5. The regulating valve for a central air conditioning system according to claim 4, wherein: Both ends of the valve body (1) are provided with soundproof covers (2), and one end of the screw rod (7) is fixedly connected with a handle (8).

6. The control valve for a central air conditioning system according to claim 4, wherein: The outer side of the upper sealing seat (4) is fixedly connected with a supporting rod (18), one end of the supporting rod (18) is fixedly connected with a fixing ring (19), the inner wall side of the fixing ring (19) is provided with an internal thread, and the screw rod (7) is slidably connected with the inner wall side of the fixing ring (19).

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