Hydraulic control one-way valve with anti-freezing function

Abstract

The utility model discloses a hydraulic control one-way valve with an anti-freezing function, and relates to the technical field of hydraulic control one-way valves, the hydraulic control one-way valve with the anti-freezing function comprises a shell, the outer side of the shell is fixedly connected with two circulating boxes, the circulating boxes are fixedly connected on the front side face and the rear side face of the shell, and the circulating boxes are arranged on the front side face and the rear side face of the shell. A liquid inlet pipe and a liquid outlet pipe are fixedly connected to the top end face of the circulation box, so that when the shell is used, external thermal circulation liquid circulates in the circulation box through the liquid inlet pipe and the liquid outlet pipe to achieve heat preservation, heating and anti-freezing operation; and a heat preservation sleeve is inserted into the inserting groove, so that when the heat preservation device is used, heat preservation and protection work can be conducted on components such as a piston A in the device at present, and the situation that the pipeline A or the pipeline B is frozen and blocked can be avoided through the arrangement of an electric heating ring.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control check valve technology, specifically a hydraulic control check valve with antifreeze properties. Background Technology

[0002] A pilot-operated check valve is a valve that relies on controlled fluid pressure to allow flow in the reverse direction. This type of valve plays a crucial role in hydraulic support equipment for coal mining machinery. The difference between a pilot-operated check valve and a regular check valve is the addition of a control oil circuit. When the control oil circuit is not connected to pressurized oil, the pilot-operated check valve functions like a regular check valve; pressurized oil flows only from the inlet to the outlet and cannot flow in the reverse direction. When control pressure is input to the control oil circuit, the piston rod moves to the right under the pressure of the oil, opening the check valve and connecting the inlet and outlet. If the oil outlet is larger than the oil inlet, the oil can flow in reverse. A current patent, CN204267804U, describes a hydraulically controlled check valve. The check valve core and valve stem have a first groove arranged axially, which communicates with the oil outlet. The valve stem surface has a second groove arranged axially, which communicates with the oil inlet. When the control port oil pressure is 0, the left end of the first groove and the right end of the second groove maintain a certain distance. When the hydraulically controlled check valve is unloaded, the valve stem moves a certain distance, and the first and second grooves contact to achieve conductivity. At this time, the oil with higher pressure at the oil outlet begins to flow towards the oil inlet through the first and second grooves. The grooves act as damping orifices, generating pressure loss, making the impact force of the flowing oil on the pipeline very small, and the pressure at the check valve core drops smoothly.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: although they can be controlled by a check valve during use, the lack of an effective insulation structure means that blockages in the hydraulic check valve's pipeline can affect the flow of liquid. Therefore, we propose a hydraulic check valve with antifreeze properties to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a liquid-controlled check valve with antifreeze properties, which solves the problem that the lack of an effective insulation structure in existing liquid-controlled check valves causes blockages in the pipeline, affecting the flow of liquid.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a liquid-controlled one-way valve with antifreeze function, comprising a housing, a circulation box fixedly connected to the outer side of the housing, two circulation boxes being provided in total, the two circulation boxes being fixedly connected to the front and rear sides of the housing in opposite directions, and the top surfaces of the two circulation boxes being fixedly connected to an inlet pipe and an outlet pipe in a straight line array, the inlet pipe and the outlet pipe together forming a hot water circulation structure, and pipes A and B being fixedly connected in a straight line array on the top and bottom surfaces of the housing, with heating rings sleeved on the outer sides of pipes A and B, and wire harnesses integrated on the outer side of the heating rings.

[0006] Preferably, the outer side of the housing is fixedly connected to a mounting plate, and there are four mounting plates, which are respectively fixedly connected to the four corners of the outer side of the housing.

[0007] Preferably, the mounting plate has a through hole inside, which is a mounting hole, and an annular groove is formed on the right end face of the housing, which is a slot, and an insulation sleeve is inserted into the slot.

[0008] Preferably, a limiting ring is fixedly connected inside the housing, and a guide rod is inserted inside the limiting ring. The guide rod has a cylindrical structure.

[0009] Preferably, a piston A is fixedly connected to the left side of the guide rod, and a spring A is fixedly connected to the right side of the piston A.

[0010] Preferably, the right end face of the spring A is fixedly connected to the left end face of the limiting ring, and the piston B is inserted into the inside of the housing.

[0011] Preferably, a spring element B is fixedly connected to the left end face of the piston B, and the spring element B and the piston B together form a reset structure.

[0012] Beneficial effects

[0013] This invention provides a hydraulically controlled check valve with antifreeze properties. Compared with the prior art, it has the following advantages:

[0014] This antifreeze hydraulic control check valve has a circulation tank fixedly connected to the front and rear sides of the housing. The top surface of the circulation tank is fixedly connected to the inlet pipe and the outlet pipe, respectively. When the housing is in use, the external hot circulating liquid circulates inside the circulation tank through the inlet pipe and the outlet pipe to achieve heat preservation, heating and antifreeze operation, thus achieving a more practical purpose.

[0015] This antifreeze hydraulic control check valve has a slot on the right side opening of the housing, into which an insulation sleeve is inserted. This allows the valve to provide insulation and protection for internal components such as piston A during use. Furthermore, the heating ring also prevents freezing and blockage in pipe A or pipe B. Attached Figure Description

[0016] Figure 1 This is a cross-sectional front view of the hydraulic control check valve of this utility model.

[0017] Figure 2 This is a schematic diagram of the rear view of the hydraulic control check valve of this utility model;

[0018] Figure 3 This is a top view of the hydraulic control check valve of this utility model.

[0019] Figure 4 This is a front view schematic diagram of the hydraulic control check valve of this utility model;

[0020] Figure 5 This is a schematic diagram of the axial side view of the hydraulic control check valve of this utility model;

[0021] Figure 6 This is a schematic diagram of the left-side structure of the hydraulic control check valve of this utility model.

[0022] In the diagram: 1. Housing; 101. Mounting plate; 102. Mounting hole; 103. Slot; 104. Insulation sleeve; 2. Pipe A; 201. Pipe B; 202. Heating ring; 203. Wiring harness; 204. Circulation box; 205. Inlet pipe; 206. Outlet pipe; 3. Limiting ring; 301. Guide rod; 302. Piston A; 303. Spring A; 304. Piston B; 305. Spring B. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6This utility model provides a technical solution: a liquid-controlled one-way valve with antifreeze, including a housing 1. A circulation box 204 is fixedly connected to the outside of the housing 1. There are two circulation boxes 204, which are fixedly connected to the front and rear sides of the housing 1 in opposite directions. The top surfaces of the two circulation boxes 204 are fixedly connected to an inlet pipe 205 and an outlet pipe 206 in a straight array. The inlet pipe 205 and the outlet pipe 206 together form a hot water circulation structure. Pipes A2 and B201 are fixedly connected to the top and bottom surfaces of the housing 1 in a straight array. An electric heating ring 202 is sleeved on the outside of pipes A2 and B201. A wire harness 203 is integrated on the outside of the electric heating ring 202.

[0025] By integrating a wire harness 203 on the outside of the heating ring 202, the heating ring 202 can be heated by energizing the wire harness 203 during use.

[0026] See Figure 1 , Figure 5 A mounting plate 101 is fixedly connected to the outer side of the housing 1. There are four mounting plates 101 in total, and the four mounting plates 101 are fixedly connected to the four corners of the outer side of the housing 1.

[0027] By fixing the mounting plate 101 to the outside of the housing 1, the housing 1 can be quickly installed during use.

[0028] See Figure 2 , Figure 3 The mounting plate 101 has a through hole inside, which is a mounting hole 102, and an annular groove is provided on the right end face of the housing 1, which is a slot 103, and an insulation sleeve 104 is inserted into the slot 103.

[0029] By inserting an insulation sleeve 104 inside the housing 1, the components inside the housing 1 can be insulated during use.

[0030] See Figure 1 , Figure 5 A limiting ring 3 is fixedly connected inside the housing 1, and a guide rod 301 is inserted inside the limiting ring 3. The guide rod 301 has a cylindrical structure.

[0031] By fixing a guide rod 301 to the inside of the limiting ring 3, it can be connected to the piston A302 during use.

[0032] See Figure 3 , Figure 6 A piston A302 is fixedly connected to the left side of the guide rod 301, and a spring A303 is fixedly connected to the right side of the piston A302.

[0033] By fixing a spring A303 to the right side of the piston A302, the piston A302 can be made to rebound during use.

[0034] See Figure 1 , Figure 2 The right end face of the spring A303 is fixedly connected to the left end face of the limiting ring 3, and the piston B304 is inserted into the inside of the housing 1.

[0035] By fixing a limiting ring 3 inside the housing 1, the piston A302 can be guided during use.

[0036] See Figure 1 , Figure 4 A spring component B305 is fixedly connected to the left end face of piston B304. The spring component B305 and piston B304 together form a reset structure.

[0037] By fixing a spring B305 to the left end face of the piston B304, displacement operation can be achieved during use.

[0038] When the hydraulic check valve is in operation, the housing 1 is attached to the fixed base surface by using the mounting plate 101 fixedly connected to its outer side, and the bolts are passed through the mounting holes 102 to achieve a quick fixation operation for the housing 1. Then, the external pipes are connected to the pipes A2 and B201 fixedly connected to the outside of the housing 1 and the opening on the right side of the housing 1 respectively.

[0039] Under normal conditions, external liquid enters the housing 1 through pipe A2, displacing piston A302, and then flows out unidirectionally through pipe B201. When external liquid enters the housing 1 through the right opening of the housing 1, it pushes piston A302 to the left, causing piston A302 to push piston B304 to the left, allowing the liquid to enter the housing A2 through pipe B201 in the opposite direction for pressure maintenance.

[0040] In summary, this device, by having an electric heating ring 202 fixedly connected to the outside of pipes A2 and B201, can perform antifreeze operation through electric heating during use.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A pilot-operated check valve with antifreeze properties, comprising a housing (1), characterized in that: A circulation box (204) is fixedly connected to the outside of the shell (1). There are two circulation boxes (204). The two circulation boxes (204) are fixedly connected to the front and rear sides of the shell (1) in opposite directions. The top surfaces of the two circulation boxes (204) are fixedly connected to the inlet pipe (205) and the outlet pipe (206) in a straight array. The inlet pipe (205) and the outlet pipe (206) together form a hot water circulation structure. Pipeline A (2) and pipeline B (201) are fixedly connected to the top and bottom surfaces of the shell (1) in a straight array. Electric heating rings (202) are sleeved on the outside of pipes A (2) and B (201). A wire harness (203) is integrated on the outside of the electric heating rings (202).

2. The antifreeze hydraulic check valve according to claim 1, characterized in that: The outer side of the housing (1) is fixedly connected to a mounting plate (101). There are four mounting plates (101) in total, and the four mounting plates (101) are fixedly connected to the four corners of the outer side of the housing (1).

3. A hydraulically controlled check valve with antifreeze properties according to claim 2, characterized in that: The mounting plate (101) has a through hole inside, which is a mounting hole (102), and an annular groove is provided on the right end face of the housing (1), which is a slot (103), and an insulation sleeve (104) is inserted into the slot (103).

4. A hydraulically controlled check valve with antifreeze properties according to claim 1, characterized in that: A limiting ring (3) is fixedly connected inside the housing (1), and a guide rod (301) is inserted inside the limiting ring (3). The guide rod (301) is a cylindrical structure.

5. A hydraulically controlled check valve with antifreeze properties according to claim 4, characterized in that: A piston A (302) is fixedly connected to the left side of the guide rod (301), and a spring A (303) is fixedly connected to the right side of the piston A (302).

6. A hydraulically controlled check valve with antifreeze properties according to claim 4, characterized in that: The right end face of the spring A (303) is fixedly connected to the left end face of the limiting ring (3), and the piston B (304) is inserted into the inside of the housing (1).

7. A hydraulically controlled check valve with antifreeze properties according to claim 6, characterized in that: A spring element B (305) is fixedly connected to the left end face of the piston B (304), and the spring element B (305) and the piston B (304) together form a reset structure.

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