A HVAC pipeline control valve

Abstract

The present invention relates to the technical field of pipeline valves, and specifically to a HVAC pipeline control valve, which includes a valve body and a valve plate. When it is necessary to hinder the flow of liquid, the valve plate is driven to approach a first fixed ring, and the annular groove arranged on the valve plate is gradually sleeved on the outside of the first fixed ring. When the end of the first fixed ring abuts the end face of the annular groove, the valve plate seals the first fixed ring. In addition, a sealing plate is arranged on the valve plate, and the sealing plate is divided into a first ring and a second ring. When the annular groove is gradually sleeved on the outside of the first fixed ring, the first fixed ring squeezes the joint of the first ring and the second ring, so that the first ring and the second ring are deformed. The annular groove is sealed by arranging the first ring and the second ring to prevent the impact on the end face of the annular groove during liquid flow, and at the same time prevent impurities in the liquid from adhering to the end face of the annular groove, thereby improving the sealing performance of the valve plate to the first fixed ring, and then improving the overall sealing effect of the control valve.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline valves, and in particular to a HVAC pipeline control valve. Background Art

[0002] In the HVAC system, the pipeline control valve is a key component to ensure the normal operation of the system and achieve precise temperature regulation and flow control. As a commonly used control valve, the stop valve is used. The water flow continuously impacts the valve core of the stop valve. Long-term scouring will gradually damage the sealing surface of the valve core. When the flatness and integrity of the sealing surface are damaged, the sealing effect between the valve core and the valve body is affected. In addition, in the actual HVAC pipeline system, there may be foreign matter such as rust and impurities in the pipeline. These foreign matter are easily attached to the sealing surface of the stop valve under the drive of the water flow. Once foreign matter is attached to the sealing surface, even if the valve is closed, it cannot completely block the water flow, causing the valve to lose its function of controlling the water flow, thereby affecting the sealing effect between the valve core and the valve body. Summary of the invention

[0003] The invention provides a HVAC pipeline control valve to solve the problem of poor sealing effect of the existing control valve.

[0004] A HVAC pipeline control valve of the present invention adopts the following technical solution:

[0005] A heating and ventilation pipeline control valve comprises a valve body and a valve plate.

[0006] The interior of the valve body is hollow, and a coaxial liquid inlet and liquid outlet are provided on the valve body. A first fixing ring is provided inside the valve body, and the axial direction of the first fixing ring is perpendicular to the axial direction of the liquid inlet, one end of the first fixing ring is communicated with the liquid inlet, and the other end of the first fixing ring is communicated with the liquid outlet; the valve plate is coaxially arranged with the first fixing ring, and an annular groove with an opening toward the first fixing ring is provided on the valve plate, and a sealing plate is provided on the valve plate, and the sealing plate can seal the opening of the annular groove, and the sealing plate includes a first ring and a second ring, the first ring and the second ring are inner and outer joints, and the end of the first fixing ring can be inserted into the annular groove through the abutment of the first ring and the second ring; the first fixing ring can abut against the end face of the annular groove.

[0007] Further, the valve plate includes a second fixing ring and a sliding disk, the second fixing ring is coaxially arranged with the first fixing ring, and the end face of the second fixing ring close to the first fixing ring is arranged as a stepped surface, so that the second fixing ring has a first inner side wall close to the first fixing ring and a second inner side wall away from the first fixing ring, and the diameter of the first inner side wall is larger than the diameter of the second inner side wall; the sliding disk is coaxially connected with the second inner side wall, and the outer side wall of the sliding disk and the first inner side wall form an annular groove with an opening facing the first fixing ring; the first ring is coaxially fixedly connected with the second fixing ring, and the second ring is coaxially fixedly connected with the sliding disk.

[0008] Furthermore, the length of the first ring in its radial direction is smaller than the length of the second ring in its radial direction, the abutment between the first ring and the second ring is close to the second fixing ring, and when the first fixing ring is inserted into the ring groove, the end of the first fixing ring first contacts the side wall of the second ring.

[0009] Furthermore, an elastic arc plate is arranged on the end face of the first fixing ring close to the second fixing ring; the elastic arc plate is arranged in a ring shape, and the elastic arc plate has a first edge and a second edge, the first edge is fixedly connected to the end face of the first fixing ring, and in an initial state, the second edge abuts against the end face of the first fixing ring, and when the first fixing ring is inserted into the annular groove, the elastic arc plate abuts against the end face of the annular groove, and the elastic arc plate is deformed into a horizontal plate.

[0010] Furthermore, a deformation ring is provided on the inner side wall of the first fixing ring, and one end of the deformation ring away from the second fixing ring is fixedly connected to the first fixing ring, and one end of the deformation ring close to the second fixing ring is provided with a plurality of deformation grooves, and the deformation grooves are V-shaped with an opening toward the second fixing ring, and the plurality of deformation grooves are evenly distributed around the circumferential direction of the second fixing ring, and one end of the deformation ring close to the second fixing ring abuts against the second edge of the elastic arc plate; when the elastic arc plate is deformed into a horizontal plate, the deformation ring is squeezed by the elastic arc plate, so that the side wall of the deformation ring is deformed into a conical surface.

[0011] Furthermore, the first fixing ring is provided with a rubber sleeve, the rubber sleeve abuts against the elastic arc plate and the deformation ring, the end of the rubber sleeve is fixedly connected to the first fixing ring, and the rubber sleeve can be deformed.

[0012] Furthermore, the valve body is provided with a power source for driving the second fixing ring to move along its own axial direction.

[0013] Furthermore, the power source includes a transmission rod and a fixing nut, the transmission rod is coaxially rotatably connected to the second fixing ring, the fixing nut is fixedly connected to the valve body, the outer side wall of the transmission rod is provided with a threaded groove, the fixing nut is threadedly connected to the transmission rod, and the second fixing ring is slidably connected to the valve body.

[0014] Furthermore, a pushing member is provided between the sliding plate and the second fixing ring, and the pushing member can push the end surface of the sliding plate close to the first fixing ring to be flush with the end surface of the second fixing ring close to the first fixing ring.

[0015] Furthermore, the pushing member is a pushing spring, one end of the pushing spring is fixedly connected to the second fixing ring, and the other end of the pushing spring is fixedly connected to the sliding disk.

[0016] The beneficial effects of the present invention are as follows: a HVAC pipeline control valve of the present invention comprises a valve body and a valve plate. During the use of the control valve, the valve body is installed in the pipeline, and the liquid in the pipeline enters the interior of the valve body through the liquid inlet. The liquid passes through the first fixing ring and then discharges the valve body through the liquid outlet. When it is necessary to hinder the flow of liquid, the valve plate is driven to approach the first fixing ring. When the valve plate approaches the first fixing ring, the annular groove arranged on the valve plate is gradually sleeved on the outside of the first fixing ring. When the end of the first fixing ring abuts against the end face of the annular groove, the valve plate seals the first fixing ring. In addition, a sealing plate is arranged on the valve plate, and the sealing plate is divided into a first ring and a second ring. When the annular groove is gradually sleeved on the outside of the first fixing ring, the first fixing ring squeezes the joint of the first ring and the second ring, so that the first ring and the second ring are deformed. The annular groove is sealed by arranging the first ring and the second ring to prevent the impact on the end face of the annular groove when the liquid flows, and at the same time, prevent the impurities in the liquid from adhering to the end face of the annular groove, thereby improving the sealing performance of the valve plate to the first fixing ring, and then improving the overall sealing effect of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a HVAC pipeline control valve provided by an embodiment of the present invention;

[0019] Figure 2 An exploded diagram of the structure of a HVAC pipeline control valve provided by an embodiment of the present invention;

[0020] Figure 3 A cross-sectional view of a HVAC pipeline control valve provided by an embodiment of the present invention when it is turned on;

[0021] Figure 4 A cross-sectional view of a HVAC pipeline control valve when it is blocked provided by an embodiment of the present invention;

[0022] Figure 5 for Figure 3 A partial enlarged view of the middle A;

[0023] Figure 6 for Figure 4 A partial enlarged view of point B in the middle;

[0024] Figure 7 A schematic structural diagram of a deformation ring in a HVAC pipe control valve provided in an embodiment of the present invention.

[0025] In the figure: 110, valve body; 111, liquid inlet; 112, liquid outlet; 120, first fixed ring; 130, sealing plate; 140, first ring; 150, second ring; 160, ring groove; 210, second fixed ring; 220, sliding disk; 230, elastic arc plate; 240, deformation ring; 241, deformation groove; 250, closed chamber; 260, rubber sleeve; 310, transmission rod; 320, fixing nut; 330, mounting tube; 340, flange plate; 350, push spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figures 1 to 7 As shown, an embodiment of the present invention provides a HVAC pipe control valve, which includes a valve body 110 and a valve plate.

[0030] The valve body 110 is cylindrical in shape, and the interior of the valve body 110 is hollow. One end of the valve body 110 is provided with a liquid inlet 111 for connecting the interior of the valve body 110 with the external environment, and the other end of the valve body 110 is provided with a liquid outlet 112 for connecting the interior of the valve body 110 with the external environment. The liquid inlet 111 and the liquid outlet 112 are in a coaxial state. The liquid inlet 111 and the liquid outlet 112 of the valve body 110 can be connected to a pipeline. A first fixing ring 120 is fixedly provided inside the valve body 110, and the axis of the first fixing ring 120 is aligned with the liquid inlet 111. The axes of 11 are perpendicular to each other. Taking the valve body 110 in a horizontal state as an example, the first fixing ring 120 is in a vertical state, and a sealing plate 130 is connected between the side wall of the first fixing ring 120 and the inner wall of the valve body 110, so that the upper end of the first fixing ring 120 is connected to the liquid outlet 112, and the lower end of the first fixing ring 120 is connected to the liquid inlet 111. When the liquid enters the valve body 110 through the liquid inlet 111, it needs to flow through the first fixing ring 120 before it can be discharged from the valve body 110 through the liquid outlet 112.

[0031] The valve plate is coaxially arranged with the first fixing ring 120, and the valve plate can slide along the axial direction of the first fixing ring 120. When the control valve is in the conducting state, there is a gap between the valve plate and the upper end of the first fixing ring 120. When the control valve is in the blocking state, the valve plate and the upper end of the first fixing ring 120 are in abutment. An annular groove 160 with an opening toward the first fixing ring 120 is arranged on the valve plate. The inner diameter of the annular groove 160 is smaller than the inner diameter of the first fixing ring 120, and the outer diameter of the annular groove 160 is larger than the outer diameter of the first fixing ring 120, so that the length of the annular groove 160 in its own radial direction is greater than the length of the first fixing ring 120 in its own radial direction, ensuring that the upper end of the first fixing ring 120 can be smoothly inserted into the annular groove 160. A sealing plate is provided on the valve plate, and the sealing plate includes a first ring 140 and a second ring 150. The first ring 140 and the second ring 150 are both made of rubber material, so that the first ring 140 and the second ring 150 can both be deformed. The first ring 140 is sleeved on the outside of the second ring 150. When the first ring 140 and the second ring 150 are in abutment, the first ring 140 and the second ring 150 jointly seal the opening of the annular groove 160. When the valve plate gradually seals the upper end of the first fixing ring 120, the valve plate gradually approaches the first fixing ring 120, and the upper end of the first fixing ring 120 gradually pushes the abutment between the first ring 140 and the second ring 150, so that the first ring 140 and the second ring 150 are deformed, so that the upper end of the first fixing ring 120 is gradually inserted into the annular groove 160, until the upper end of the first fixing ring 120 abuts against the end face of the annular groove 160, thereby realizing the sealing of the upper end of the first fixing ring 120 by the valve plate.

[0032] A HVAC pipeline control valve of the present invention, during the use of the control valve, the valve body 110 is installed in the pipeline, the liquid in the pipeline enters the valve body 110 through the liquid inlet 111, and the liquid passes through the first fixing ring 120 and then discharges the valve body 110 through the liquid outlet 112. When it is necessary to hinder the flow of liquid, the valve plate is driven to approach the first fixing ring 120. When the valve plate approaches the first fixing ring 120, the annular groove 160 arranged on the valve plate is gradually sleeved on the outside of the first fixing ring 120. When the end of the first fixing ring 120 abuts against the end face of the annular groove 160, the valve plate achieves the blocking of the first fixing ring 120. In addition, on the valve plate A blocking plate is provided, and the blocking plate is divided into a first ring 140 and a second ring 150. When the annular groove 160 is gradually sleeved on the outside of the first fixing ring 120, the first fixing ring 120 squeezes the joint of the first ring 140 and the second ring 150, so that the first ring 140 and the second ring 150 are deformed. The annular groove 160 is blocked by providing the first ring 140 and the second ring 150 to prevent the impact of the liquid on the end face of the annular groove 160 during flow, and at the same time prevent impurities in the liquid from adhering to the end face of the annular groove 160, thereby improving the sealing performance of the valve plate to the first fixing ring 120, thereby improving the overall sealing effect of the control valve.

[0033] In one embodiment, the valve plate includes a second fixing ring 210 and a sliding disk 220. The second fixing ring 210 is coaxially arranged with the first fixing ring 120. The second fixing ring 210 can approach or move away from the first fixing ring 120. Taking the valve body 110 in a horizontal state as an example, the axis of the second fixing ring 210 is in a vertical state, and the lower end of the second fixing ring 210 is arranged as a stepped surface, so that the lower end of the second fixing ring 210 has a first inner side wall close to the first fixing ring 120 and a second inner side wall away from the first fixing ring 120, and the diameter of the first inner side wall is greater than the diameter of the second inner side wall. The sliding disk 220 is coaxially arranged with the second fixed ring 210, and the outer diameter of the sliding disk 220 is equal to the outer diameter of the second inner wall. The outer wall of the sliding disk 220 is connected to the second inner wall, and a downward-opening annular groove 160 is formed between the outer wall of the sliding disk 220 and the first inner wall. Furthermore, the first ring 140 is fixedly connected to the lower end of the second fixed ring 210, and the second ring 150 is fixedly connected to the lower end surface of the sliding disk 220. When the second fixed ring 210 approaches the first fixed ring 120, the upper end of the first fixed ring 120 squeezes the abutment between the first ring 140 and the second ring 150, so that the upper end of the first fixed ring 120 enters the annular groove 160.

[0034] In one embodiment, the length of the first ring 140 in its radial direction is smaller than the length of the second ring 150 in its radial direction, and the abutment between the first ring 140 and the second ring 150 is close to the second fixing ring 210. When the first fixing ring 120 is inserted into the annular groove 160, the upper end of the first fixing ring 120 first contacts the side wall of the second ring 150. Furthermore, when the first ring 140 and the second ring 150 jointly block the annular groove 160, the liquid can pass through the gap between the first ring 140 and the second ring 150 and enter the interior of the annular groove 160. When the valve plate is used to block the upper end of the first fixing ring 120, the first fixing ring 120 is The upper end of the ring 120 first squeezes the second ring 150, and the second ring 150 bends and deforms into the annular groove 160. Since there is liquid in the annular groove 160, the liquid in the annular groove 160 pushes the first ring 140, so that the first ring 140 bends and deforms toward the outside of the annular groove 160, ensuring that the liquid in the annular groove 160 can be smoothly discharged from the annular groove 160, and then ensuring that the upper end of the first fixed ring 120 can enter the annular groove 160. At this time, the first ring 140 abuts against the outer wall of the first fixed ring 120, and the second ring 150 abuts against the inner wall of the first fixed ring 120, further improving the sealing effect on the upper end of the first fixed ring 120.

[0035] In one embodiment, an elastic arc plate 230 is provided on the end face of the first fixing ring 120 close to the second fixing ring 210. Specifically, the elastic arc plate 230 is provided on the upper end face of the first fixing ring 120. The elastic arc plate 230 is provided in a closed ring shape. The elastic arc plate 230 is half of the annular tube, so that the elastic arc plate 230 has a first edge away from the axis of the first fixing ring 120 and a second edge close to the axis of the first fixing ring 120. The first edge is fixedly connected to the end face of the first fixing ring 120, and the second edge abuts against the end face of the first fixing ring 120. In the initial state, the elastic arc plate 230 contacts the upper end surface of the first fixing ring 120 through the first edge and the second edge. When the upper end of the first fixing ring 120 enters the annular groove 160, the elastic arc plate 230 gradually contacts the end surface of the annular groove 160. As the second fixing ring 210 moves further downward, the elastic arc plate 230 gradually deforms, and the second edge gradually disengages from the upper end surface of the first fixing ring 120. Under the extrusion of the first fixing ring 120 and the end surface of the annular groove 160, the elastic arc plate 230 gradually deforms into a horizontal plate. By setting the elastic arc plate 230, the contact area between the first fixing ring 120 and the end surface of the annular groove 160 is increased, thereby increasing the sealing surface and improving the sealing effect on the upper end of the first fixing ring 120.

[0036] In one embodiment, a deformable ring 240 is provided on the inner side wall of the first fixing ring 120, and the deformable ring 240 is coaxially arranged with the first fixing ring 120. The lower end of the deformable ring 240 is fixedly connected to the first fixing ring 120, and the outer side wall of the deformable ring 240 abuts against the inner side wall of the first fixing ring 120. The upper end of the deformable ring 240 extends above the upper end of the first fixing ring 120. The upper end of the deformable ring 240 is provided with a plurality of deformation grooves 241 with openings facing upwards. The plurality of deformation grooves 241 are evenly distributed around the circumferential direction of the deformation ring 240, and each deformation groove 241 is V-shaped, elastically When the elastic arc plate 230 is squeezed, the second edge of the elastic arc plate 230 gradually disengages from the upper end surface of the first fixed ring 120, and the second edge of the elastic arc plate 230 squeezes the outer wall of the deformation ring 240. Under the action of multiple deformation grooves 241, the side wall of the deformation ring 240 approaches the axis of the first fixed ring 120, so that the side wall of the deformation ring 240 is deformed into a conical surface, and after the deformation ring 240 is deformed, the inner side wall of the deformation ring 240 squeezes the second ring 150, further increasing the sealing surface and improving the sealing effect on the upper end of the first fixed ring 120.

[0037] Furthermore, when the inner wall of the deforming ring 240 abuts against the second ring 150, the elastic arc plate 230 has already abutted against the end face of the annular groove 160, and when the elastic arc plate 230 is deformed into a horizontal plate, the side wall of the deforming ring 240 is deformed into a conical surface, and the squeezing force of the deforming ring 240 on the second ring 150 is further increased. In the process of deformation of the deforming ring 240, a closed chamber 250 is formed between the inner wall of the deforming ring 240, the second ring 150 and the end face of the annular groove 160, and as the deformation degree of the deforming ring 240 gradually increases, the pressure in the closed chamber 250 gradually increases. By setting the closed chamber 250, the pressure difference on both sides of the elastic arc plate 230 is reduced, and the risk of liquid leaking out from the gap between the elastic arc plate 230 and the end face of the annular groove 160 is further reduced.

[0038] Furthermore, in the initial state, by setting the deformable ring 240 to a circular ring shape and setting the elastic arc plate 230 to an arc shape, it is convenient to insert the upper end of the first fixing ring 120 into the annular groove 160. When it is necessary to pull the upper end of the first fixing ring 120 out of the annular groove 160, the elastic arc plate 230 and the deformable ring 240 are actively reset, thereby facilitating the upper end of the first fixing ring 120 to be pulled out of the annular groove 160.

[0039] In one embodiment, the first fixing ring 120 is sleeved with a rubber sleeve 260, which is annular and has a fitting groove with an opening facing downward. By providing the fitting groove, the rubber sleeve 260 can be sleeved on the upper end of the first fixing ring 120. When the rubber sleeve 260 is sleeved on the upper end of the first fixing ring 120, the rubber sleeve 260 abuts against the elastic arc plate 230 and the deformation ring 240. The rubber sleeve 260 has two lower ends, one of which is fixedly connected to the outer side wall of the first fixing ring 120, and the other lower end of the rubber sleeve 260 is fixedly connected to the inner side wall of the first fixing ring 120. Further, in the process of deformation of the elastic arc plate 230, the rubber sleeve 260 can be adaptively deformed. By providing the rubber sleeve 260, the sealing performance between the elastic arc plate 230 and the end face of the annular groove 160 is further increased, and the sealing performance between the deformation ring 240 and the second ring 150 is increased at the same time.

[0040] In one of the embodiments, a power source is provided on the valve body 110 to drive the second fixing ring 210 to move along its own axial direction. When the control valve conducts liquid, the second fixing ring 210 is in a state of being away from the first fixing ring 120. When the control valve needs to prevent liquid from conducting, the power source drives the second fixing ring 210 to move closer to the first fixing ring 120.

[0041] In one embodiment, the power source includes a transmission rod 310 and a fixing nut 320, and a mounting tube 330 is provided on the valve body 110. The mounting tube 330 is vertically arranged with the valve body 110, and the mounting tube 330 is coaxially arranged with the second fixing ring 210, and the mounting tube 330 is connected with the inside of the valve body 110. The transmission rod 310 is coaxially rotatably connected with the second fixing ring 210, and the end of the mounting tube 330 away from the valve body 110 is sealed with a flange plate 340, and the transmission rod 310 rotates and slides to seal the flange plate 340 that passes through the end of the mounting tube 330. The fixing nut 320 is fixedly connected to the mounting tube 330, and the outer wall of the transmission rod 310 is provided with a thread groove, and the fixing nut 320 is threadedly connected with the transmission rod 310, and a knob is provided at the end of the transmission rod 310. Furthermore, a limit block is provided on the outer wall of the second fixing ring 210, and a limit groove is provided on the inner wall of the transmission rod 310. The limit block is slidably provided in the limit groove, so that the second fixing ring 210 can only slide in the mounting tube 330. When the knob is turned, the transmission rod 310 rotates around its own axis, and the transmission rod 310 slides along its own axis at the same time, thereby realizing the movement of the second fixing ring 210 approaching or moving away from the first fixing ring 120.

[0042] In one embodiment, a slider is fixedly provided on the sliding plate 220, and a slide groove parallel to the axis of the second fixing ring 210 is provided on the second inner side wall, and the slider is slidably provided in the slide groove, and the slide groove has an upper end and a lower end, and when the slider is at the lower end of the slide groove, the lower end surface of the sliding plate 220 is flush with the lower end surface of the second fixing ring 210. Further, a push piece is provided between the sliding plate 220 and the upper end of the second fixing ring 210, and the push piece can push the lower end surface of the sliding plate 220 to be flush with the lower end surface of the second fixing ring 210, thereby ensuring that the first ring 140 and the second ring 150 block the annular groove 160 in the initial state.

[0043] In one embodiment, the push member is a push spring 350, one end of which is fixedly connected to the upper end of the second fixed ring 210, and the other end of which is fixedly connected to the sliding disk 220. The push spring 350 is always in a compressed state, so that the slider on the sliding disk 220 always has a tendency to move toward the lower end. Further, when the pressure inside the first fixed ring 120 suddenly increases, the liquid in the first fixed ring 120 pushes the sliding disk 220 upward. When the sliding disk 220 moves upward, the sliding disk 220 drives the second ring 150 to move synchronously, and the extrusion force between the second ring 150 and the deformation ring 240 increases, further improving the sealing between the second ring 150 and the deformation ring 240.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A HVAC pipeline control valve, characterized in that: include: A valve body, wherein the interior of the valve body is hollow, and a coaxial liquid inlet and liquid outlet are provided on the valve body. A first fixing ring is provided inside the valve body, and the axial direction of the first fixing ring is perpendicular to the axial direction of the liquid inlet. One end of the first fixing ring is communicated with the liquid inlet, and the other end of the first fixing ring is communicated with the liquid outlet; A valve plate, wherein the valve plate is coaxially arranged with the first fixing ring, the valve plate is provided with an annular groove opening toward the first fixing ring, the valve plate is provided with a blocking plate, the blocking plate can block the opening of the annular groove, the blocking plate comprises a first ring and a second ring, the first ring and the second ring are connected inside and outside, the end of the first fixing ring can be inserted into the annular groove through the abutment of the first ring and the second ring; the first fixing ring can abut against the end face of the annular groove; The valve plate includes a second fixing ring and a sliding disk, the second fixing ring is coaxially arranged with the first fixing ring; the length of the first ring in its own radial direction is smaller than the length of the second ring in its own radial direction, the abutment between the first ring and the second ring is close to the second fixing ring, and when the first fixing ring is inserted into the ring groove, the end of the first fixing ring first contacts the side wall of the second ring; An elastic arc plate is provided on the end surface of the first fixing ring close to the second fixing ring; the elastic arc plate is arranged in a ring shape, and has a first edge and a second edge, the first edge is fixedly connected to the end surface of the first fixing ring, and in an initial state, the second edge abuts against the end surface of the first fixing ring, and when the first fixing ring is inserted into the annular groove, the elastic arc plate abuts against the end surface of the annular groove, and the elastic arc plate is deformed into a horizontal plate; A deformable ring is disposed on the inner side wall of the first fixing ring, and one end of the deformable ring away from the second fixing ring is fixedly connected to the first fixing ring; and one end of the deformable ring close to the second fixing ring abuts against the second edge of the elastic arc plate.

2. A HVAC pipeline control valve according to claim 1, characterized in that: The end surface of the second fixing ring close to the first fixing ring is set as a stepped surface, so that the second fixing ring has a first inner side wall close to the first fixing ring and a second inner side wall away from the first fixing ring, and the diameter of the first inner side wall is larger than the diameter of the second inner side wall; the sliding disk is coaxially connected to the second inner side wall, and the outer side wall of the sliding disk and the first inner side wall form an annular groove with an opening facing the first fixing ring; the first ring is coaxially fixedly connected to the second fixing ring, and the second ring is coaxially fixedly connected to the sliding disk.

3. A HVAC pipeline control valve according to claim 1, characterized in that: A plurality of deformation grooves are arranged at one end of the deformation ring close to the second fixing ring. The deformation grooves are in a V-shape with their openings facing the second fixing ring, and the plurality of deformation grooves are evenly distributed around the circumference of the second fixing ring. When the elastic arc plate is deformed into a horizontal plate, the deformation ring is squeezed by the elastic arc plate, so that the side wall of the deformation ring is deformed into a conical surface.

4. A HVAC pipeline control valve according to claim 3, characterized in that: The first fixing ring is provided with a rubber sleeve, the rubber sleeve abuts against the elastic arc plate and the deformation ring, the end of the rubber sleeve is fixedly connected to the first fixing ring, and the rubber sleeve can be deformed.

5. A HVAC pipeline control valve according to claim 2, characterized in that: The valve body is provided with a power source for driving the second fixing ring to move along the axial direction of the second fixing ring.

6. A HVAC pipeline control valve according to claim 5, characterized in that: The power source includes a transmission rod and a fixing nut, the transmission rod is coaxially rotatably connected with the second fixing ring, the fixing nut is fixedly connected to the valve body, a thread groove is provided on the outer side wall of the transmission rod, the fixing nut is threadedly connected with the transmission rod, and the second fixing ring is slidably connected with the valve body.

7. A HVAC pipeline control valve according to claim 2, characterized in that: A pushing member is provided between the sliding plate and the second fixing ring, and the pushing member can push the end surface of the sliding plate close to the first fixing ring to be flush with the end surface of the second fixing ring close to the first fixing ring.

8. A HVAC pipeline control valve according to claim 7, characterized in that: The pushing member is a pushing spring, one end of the pushing spring is fixedly connected to the second fixing ring, and the other end of the pushing spring is fixedly connected to the sliding plate.

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