Anti-freezing pressure valve

Abstract

The utility model provides an anti-freezing pressure valve, which relates to the technical field of valve production, and comprises an inner pipe, an opening and closing device is arranged in the inner pipe, an outer pipe is arranged on the outer surface of the inner pipe, a flange for connection is fixed on the outer surface of the outer pipe, the end part of the outer pipe is connected with the inner pipe, and the opening and closing device is arranged on the inner pipe. An unfreezing device used for unfreezing is arranged on the outer surface of the outer pipe, and a drainage device used for draining accumulated water is arranged on the outer surface of the inner pipe. After the anti-freezing pressure valve is used, accumulated liquid in the inner pipe communicated with the external pipeline is discharged through the drainage device, the situation that the accumulated liquid is frozen is avoided, meanwhile, the inner pipe is isolated from external cold air through the outer pipe and the heat preservation sleeve, contact between the inner pipe and the cold air is reduced, and the anti-freezing effect is improved. The problem that in the prior art, a valve is difficult to avoid freezing by discharging accumulated liquid is solved.

Description

Technical Field

[0001] The utility model relates to a pressure valve, in particular to an antifreeze type pressure valve, belonging to the technical field of valve production. Background Art

[0002] Valves are control components in fluid conveying systems and have functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief. They are valves used in fluid control systems. However, during use, some existing valves are installed in harsh environments. The valves are directly exposed to the external environment and are therefore easily damaged by cold air, causing the valves to freeze, which affects their normal operation and shortens their service life.

[0003] A valve with good antifreeze effect disclosed in the Chinese patent application disclosure specification CN213598587U can discharge the accumulated liquid inside the casing when the No. 1 baffle core is in the closed state through the arrangement of the liquid outlet part and the liquid outlet pipe, so as to prevent the accumulated liquid from accumulating inside the casing and freezing, thereby affecting the normal operation of the valve; in addition, the insulation layer and vacuum chamber installed inside the casing can weaken the transmission of external cold air, thereby preventing the external cold air from damaging the valve and extending the service life of the valve.

[0004] Although the above patent can prevent the accumulated liquid from freezing by discharging the accumulated liquid inside the casing, during the overall installation and use, one end of the valve as the water inlet end will definitely have accumulated liquid, and it is impossible to rely solely on the method of discharging the accumulated liquid to prevent it from freezing. At the same time, once the above valve is frozen during use, it is difficult to thaw it quickly to maintain the normal operation of the valve. Utility Model Content

[0005] The utility model provides an antifreeze type pressure valve to solve the problem that the valve in the prior art is difficult to avoid freezing by discharging accumulated liquid, and at the same time realizes rapid thawing of the valve.

[0006] The utility model is implemented through the following technical scheme: an antifreeze type pressure valve, comprising an inner tube, an opening and closing device is installed inside the inner tube, an outer tube is arranged on the outer surface of the inner tube, a flange for connection is fixed on the outer surface of the outer tube, the end of the outer tube is connected to the inner tube, a thawing device for thawing is arranged on the outer surface of the outer tube, and a drainage device for draining accumulated water is arranged on the outer surface of the inner tube.

[0007] The opening and closing device includes a block, which is fixed to the inner wall of the inner tube. A groove is provided on the upper surface of the block, a valve core is installed on the inner wall of the groove, a flow groove is provided on the side of the valve core, and an opening corresponding to the flow groove is provided on the side of the block. The flow groove can be connected to the opening by rotating the valve core, so that water can pass through.

[0008] The opening and closing device also includes a valve adjusting rod, which passes through the outer tube and the inner tube. The valve adjusting rod is sealed with the outer tube and the inner tube. The bottom end of the valve adjusting rod is connected to the valve core. The rotation of the valve adjusting rod can drive the valve core to rotate.

[0009] The thawing device includes a water inlet pipe arranged on the outer surface of the outer tube, the water inlet pipe is connected to the outer tube, and the other end of the water inlet pipe is connected to the output end of an external water pump. Warm water can be injected into the interior of the outer tube through the external water pump, so that the warm water contacts the inner tube and the frozen water in the inner tube is thawed.

[0010] The thawing device also includes a water outlet pipe, which is located below the outer pipe and is connected to the outer pipe. A water outlet baffle core is installed inside the water outlet pipe, and a water outlet adjusting rod connected to the water outlet baffle core is provided on the outer surface of the water outlet pipe. The water outlet baffle core is opened and closed by rotating the water outlet adjusting rod, thereby discharging the water between the outer pipe and the inner pipe.

[0011] The drainage device includes a drainage pipe connected to the inner tube, the drainage pipe passes through the outer tube, the drainage pipe is sealed and connected to the outer tube, the drainage pipe is located at both ends of the inner tube, a drainage stop core is installed inside the drainage pipe, and a drainage adjustment rod connected to the drainage stop core is provided on the outer surface of the drainage pipe, and the drainage stop core is opened and closed by the rotation of the drainage adjustment rod.

[0012] The outer surface of the outer pipe is sleeved with a heat-insulating sleeve, the size of which is smaller than the distance between the drain pipe and the outlet pipe. The heat-insulating sleeve can assist in heat-insulating the outer pipe.

[0013] The utility model provides an antifreeze type pressure valve, which has the following beneficial effects:

[0014] 1. After use, the antifreeze pressure valve is provided with a drainage device to discharge the accumulated liquid inside the inner tube connected to the external pipe to avoid the freezing of the accumulated liquid. At the same time, the inner tube is isolated from the external cold air by providing an outer tube and an insulation sleeve to reduce the contact between the inner tube and the cold air, thereby solving the problem that it is difficult for the valve in the prior art to avoid freezing by discharging the accumulated liquid.

[0015] 2. When the inner tube of the antifreeze pressure valve is frozen, warm water is injected into the outer tube through the water inlet pipe. The warm water remains between the inner tube and the outer tube and surrounds the inner tube, thereby quickly melting the frozen part inside the inner tube, thereby realizing rapid thawing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a side view of the outer tube of the utility model;

[0018] Figure 3 It is a cross-sectional view of the front view of the outer tube of the utility model;

[0019] Figure 4 It is a schematic diagram of the internal structure of the inner tube of the utility model.

[0020] Description of Reference Numerals

[0021] 1. Inner pipe; 2. Opening and closing device; 3. Outer pipe; 4. Flange; 5. Thawing device; 6. Drainage device;

[0022] 201, stopper; 202, valve core; 203, flow slot; 204, valve regulating rod;

[0023] 501, water inlet pipe; 502, water outlet pipe; 503, water outlet regulating rod;

[0024] 601, drainage pipe; 602, drainage adjustment rod;

[0025] 7. Insulation cover. DETAILED DESCRIPTION

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the utility model provides an antifreeze type pressure valve, including an inner tube 1, an opening and closing device 2 is installed inside the inner tube 1, an outer tube 3 is arranged on the outer surface of the inner tube 1, a flange 4 for connection is fixed on the outer surface of the outer tube 3, the end of the outer tube 3 is connected to the inner tube 1, a thawing device 5 for thawing is arranged on the outer surface of the outer tube 3, and a drainage device 6 for draining accumulated water is arranged on the outer surface of the inner tube 1.

[0027] Please refer to Figure 2 , Figure 3 and Figure 4 The opening and closing device 2 includes a block 201, which is fixed to the inner wall of the inner tube 1. A groove is provided on the upper surface of the block 201, and a valve core 202 is installed on the inner wall of the groove. A flow groove 203 is provided on the side of the valve core 202. An opening corresponding to the flow groove 203 is provided on the side of the block 201. The flow groove 203 can be connected to the opening through the rotation of the valve core 202, so that water can flow through. The opening and closing device 2 also includes a valve regulating rod 204, which passes through the outer tube 3 and the inner tube 1. The valve regulating rod 204 is sealed and connected to the outer tube 3 and the inner tube 1. The bottom end of the valve regulating rod 204 is connected to the valve core 202, and the valve core 202 can be driven to rotate through the rotation of the valve regulating rod 204.

[0028] Please refer to Figure 2 , Figure 3 and Figure 4 The thawing device 5 includes a water inlet pipe 501 arranged on the outer surface of the outer tube 3, the water inlet pipe 501 is connected to the outer tube 3, and the other end of the water inlet pipe 501 is connected to the output end of the external water pump. Warm water can be injected into the outer tube 3 through the external water pump, so that the warm water contacts the inner tube 1, and the frozen water in the inner tube 1 is thawed. The thawing device 5 also includes a water outlet pipe 502, the water outlet pipe 502 is located below the outer tube 3, the water outlet pipe 502 is connected to the outer tube 3, a water outlet baffle core is installed inside the water outlet pipe 502, and a water outlet regulating rod 503 connected to the water outlet baffle core is arranged on the outer surface of the water outlet pipe 502, and the water outlet baffle core is opened and closed by the rotation of the water outlet regulating rod 503, so as to discharge the stored water between the outer tube 3 and the inner tube 1.

[0029] Please refer to Figure 2 , Figure 3 and Figure 4 The drainage device 6 includes a drainage pipe 601 connected to the inner tube 1, the drainage pipe 601 passes through the outer tube 3, the drainage pipe 601 is sealed and connected to the outer tube 3, the drainage pipe 601 is located at both ends of the inner tube 1, a drainage baffle core is installed inside the drainage pipe 601, and a drainage adjustment rod 602 connected to the drainage baffle core is provided on the outer surface of the drainage pipe 601. The drainage baffle core is opened and closed by rotating the drainage adjustment rod 602. The outer surface of the outer tube 3 is sleeved with an insulation sleeve 7. The size of the insulation sleeve 7 is smaller than the distance between the drainage pipe 601 and the outlet pipe 502. The insulation sleeve 7 can assist the outer tube 3 in insulation.

[0030] When the utility model is in use: first, the whole is installed with the external water pipe, and the valve adjusting rod 204 is rotated during use. The rotation of the valve adjusting rod 204 drives the valve core 202 to rotate, and then drives the flow slot 203 to be connected with the opening, so that water can pass through, completing the opening and closing of the valve core 202.

[0031] When use is completed, the accumulated liquid inside the inner tube 1 connected to the external pipeline is discharged by setting a drainage device 6 to avoid freezing of the accumulated liquid. At the same time, the outer tube 3 and the insulation sleeve 7 are provided to isolate the inner tube 1 from the external cold air, reducing the contact between the inner tube 1 and the cold air, thereby solving the problem that the valve in the prior art is difficult to avoid freezing by discharging the accumulated liquid. When the inner tube 1 is frozen, warm water is injected into the outer tube 3 through the water inlet pipe 501, and the warm water remains between the inner tube 1 and the outer tube 3 and surrounds the inner tube 1, thereby quickly melting the frozen part inside the inner tube 1, thereby realizing rapid thawing of the valve.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An antifreeze type pressure valve, comprising an inner tube (1), characterized in that: An opening and closing device (2) is installed inside the inner tube (1), an outer tube (3) is arranged on the outer surface of the inner tube (1), a flange (4) for connection is fixed on the outer surface of the outer tube (3), an end of the outer tube (3) is connected to the inner tube (1), a thawing device (5) for thawing is arranged on the outer surface of the outer tube (3), and a drainage device (6) for draining accumulated water is arranged on the outer surface of the inner tube (1).

2. The antifreeze pressure valve according to claim 1, characterized in that: The opening and closing device (2) comprises a block (201), the block (201) being fixed to the inner wall of the inner tube (1), the upper surface of the block (201) being provided with a groove, the inner wall of the groove being provided with a valve core (202), the side surface of the valve core (202) being provided with a flow groove (203), and the side surface of the block (201) being provided with an opening corresponding to the flow groove (203).

3. The antifreeze pressure valve according to claim 1, characterized in that: The opening and closing device (2) further comprises a valve adjusting rod (204), wherein the valve adjusting rod (204) passes through the outer tube (3) and the inner tube (1), the valve adjusting rod (204) is sealedly connected to both the outer tube (3) and the inner tube (1), and the bottom end of the valve adjusting rod (204) is connected to the valve core (202).

4. The antifreeze pressure valve according to claim 1, characterized in that: The thawing device (5) comprises a water inlet pipe (501) arranged on the outer surface of the outer tube (3); the water inlet pipe (501) is connected to the outer tube (3); and the other end of the water inlet pipe (501) is connected to the output end of an external water pump.

5. The antifreeze pressure valve according to claim 1, characterized in that: The thawing device (5) further comprises a water outlet pipe (502), the water outlet pipe (502) being located below the outer pipe (3), the water outlet pipe (502) being in communication with the outer pipe (3), a water outlet baffle core being installed inside the water outlet pipe (502), and a water outlet regulating rod (503) being connected to the water outlet baffle core being provided on the outer surface of the water outlet pipe (502).

6. The antifreeze pressure valve according to claim 1, characterized in that: The drainage device (6) comprises a drainage pipe (601) connected to the inner tube (1); the drainage pipe (601) passes through the outer tube (3); the drainage pipe (601) is sealedly connected to the outer tube (3); the drainage pipe (601) is located at both ends of the inner tube (1); a drainage baffle core is installed inside the drainage pipe (601); and a drainage adjustment rod (602) connected to the drainage baffle core is provided on the outer surface of the drainage pipe (601).

7. The antifreeze pressure valve according to claim 1, characterized in that: The outer surface of the outer tube (3) is sleeved with a heat-insulating sleeve (7), and the size of the heat-insulating sleeve (7) is smaller than the distance between the drain pipe (601) and the water outlet pipe (502).

Images