A hydraulic support push hydraulic control one-way valve with anti-impact threaded joint

Abstract

The utility model discloses a kind of hydraulic support push liquid control check valve of anti-impact threaded joint, it is related to liquid control check valve field, including valve body, plug-in valve core assembly, screw plug and two anti-impact threaded joints, the valve body inside is equipped with valve core hole, plug hole and two threaded joint holes, wherein valve core hole and plug hole are respectively located at the left and right sides of valve body, two threaded joint holes are located at the front side of valve body and respectively communicated with valve core hole and plug hole, the utility model integrates liquid control check valve, liquid inlet interface and liquid return interface in a valve body, and by two anti-impact threaded joints directly connect the liquid inlet rubber tube and liquid return rubber tube of operating valve, eliminate intermediate lengthy pipeline section, simplify hydraulic system structure, not only reduce the leakage risk possibly caused by multiple pipe joints, but also improve overall safety, reliability is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic control check valves, specifically relating to a hydraulic support push-type hydraulic control check valve with an anti-impact threaded joint. Background Technology

[0002] Hydraulic supports are key support equipment in fully mechanized coal mining faces. Their pushing system typically uses hydraulic check valves to lock and control the pushing jacks.

[0003] Currently, most common push-type hydraulic check valves adopt a tubular structure, which is directly fixed to the support structure and connected to the push-type jack through a rubber hose.

[0004] The structure has the following problems: First, the hose is subjected to high-pressure liquid flow for a long time, which is prone to cracking and leakage, posing a safety hazard. Second, the push jack is often accompanied by strong pulse vibration during operation, which can easily lead to wear and deformation of the jack connector seat over time, resulting in leakage. In this case, the entire jack needs to be removed and replaced, which is inefficient and costly. Third, the existing pipeline connection method is complicated. The hose needs to be led from the control valve to the check valve, and then connected to the jack through the check valve. This is not only cumbersome to install, but also increases the number of potential failure points in the system.

[0005] Therefore, we propose a hydraulic support push-operated check valve with an anti-impact threaded joint to solve the above problems. Utility Model Content

[0006] To address the problems of high-pressure cracking and leakage of hoses, vibration damage to jack connector seats, and complex piping systems in existing tubular push-pull hydraulic control check valves, this utility model provides a hydraulic support push-pull hydraulic control check valve with an added impact-resistant threaded connector.

[0007] The solution adopted by this utility model to solve its technical problem is: a hydraulic support push-type hydraulic control check valve with anti-impact threaded joints, including a valve body, a cartridge valve core assembly, a screw plug and two anti-impact threaded joints. The valve body is provided with a valve core hole, a plug hole and two threaded joint holes. The valve core hole and the plug hole are located on the left and right sides of the valve body respectively. The two threaded joint holes are located on the front side of the valve body and are respectively connected to the valve core hole and the plug hole. The bottom of the valve body is provided with an inlet port and a return port. The return port is connected to the valve core hole, and the inlet port is connected to the plug hole. The cartridge valve core assembly is assembled in the valve core hole, and the screw plug is assembled in the plug hole. The inner end of the screw plug is provided with a liquid inlet channel, so that the hydraulic oil entering the plug hole flows out through the liquid inlet interface through the liquid inlet channel. The two impact-resistant threaded connectors are respectively assembled into the two threaded connector holes.

[0008] Preferably, the impact-resistant threaded connector includes a connector, a retainer, and a cylindrical pin. The connector and the retainer are arranged opposite to each other and are respectively provided with semi-circular grooves. The cylindrical pin is used to fix the connector and form a pin-type rotating structure. The connector is threadedly connected to the threaded connector hole.

[0009] Preferably, a sealing gasket is provided at both the liquid inlet and the liquid return interface.

[0010] Preferably, the anti-impact threaded connector corresponding to the hydraulic check valve is used to connect the inlet hose of the control valve, and the other anti-impact threaded connector is used to connect the return hose of the control valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model integrates the hydraulic control check valve, inlet port, and return port into a single valve body, and directly connects the inlet hose and return hose of the control valve through two impact-resistant threaded joints, eliminating the lengthy intermediate pipeline section and simplifying the hydraulic system structure. This not only reduces the risk of leakage that may be caused by multiple pipe joints, but also improves overall safety and enhances reliability.

[0012] 2. This utility model adopts an impact-resistant threaded joint with a pin-type rotating structure, which effectively buffers and absorbs pulse vibrations from pipelines and jacks, preventing wear, deformation and leakage caused by long-term vibration of the joint. It significantly improves the working stability and service life of valves under harsh working conditions. In addition, the impact-resistant threaded joint can be quickly disassembled individually after damage, without having to remove the push jack from the support as a whole, which greatly shortens maintenance time, ensures the continuity of underground mining operations and improves work efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model viewed from below.

[0014] In the diagram: 1 Valve body, 2 Cartridge valve core assembly, 3 Plug, 4 Impact-resistant threaded connector, 41 Connector, 42 Card holder, 43 Cylindrical pin, 5 Inlet port, 6 Return port, 7 Sealing gasket, 8 Overflow valve mounting hole. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please see Figure 1-3 This utility model provides a technical solution for a hydraulic support push-type hydraulic control check valve with an added impact-resistant threaded joint: Example 1: according to Figure 1-3 As shown, the assembly includes a valve body 1, a cartridge valve core assembly 2, a screw plug 3, and two impact-resistant threaded connectors 4. In this embodiment, the structure of the cartridge valve core assembly 2 is the same as that of the cartridge valve core assembly of the column hydraulic control check valve (model FDYM480 / 50 I (DN12 / 20 / 10)X) in the prior art. It contains standard components such as a screw sleeve, valve stem, valve seat, large valve core, small valve core, large spring, and small spring. Its working principle is also known to those skilled in the art. Therefore, those skilled in the art can obtain and install this assembly without creative labor based on the above-disclosed model or common knowledge. Therefore, its internal structure will not be described in detail here.

[0017] The valve body 1 has a valve core hole, a plug hole, an overflow valve mounting hole 8, and two threaded connector holes inside. The valve core hole and the plug hole are located on the left and right sides of the valve body 1, respectively. The two threaded connector holes are located on the front side of the valve body 1 and are connected to the valve core hole and the plug hole, respectively. The overflow valve mounting hole 8 is located on the left side of the threaded connector hole and is connected to the valve core hole for installing the overflow valve.

[0018] The bottom of the valve body 1 is provided with an inlet port 5 and a return port 6. Sealing gaskets 7 are provided at the inlet port 5 and the return port 6 respectively to enhance the sealing performance at the interface and prevent hydraulic oil leakage. The return port 6 is connected to the valve core hole, and the inlet port 5 is connected to the plug hole. The inlet port 5 is used to connect to the rodless chamber of the jack, and the return port 6 is used to connect to the rod chamber of the jack.

[0019] The cartridge valve core assembly 2 is assembled in the valve core hole, and the screw plug 3 is assembled in the plug hole to prevent the hydraulic oil in the plug hole from leaking out. The inner end of the screw plug 3 is provided with an inlet channel, so that the hydraulic oil entering the plug hole can flow out through the inlet interface 5.

[0020] Two impact-resistant threaded connectors 4 are respectively set for two threaded connector holes. The impact-resistant threaded connector 4 includes a connector 41, a retainer 42, and a cylindrical pin 43. The connector 41 and the retainer 42 are arranged opposite each other and are respectively provided with semi-circular grooves. The cylindrical pin 43 is inserted and fixed to form a pin-type rotating structure. The connector 41 is threadedly connected to the threaded connector hole. By adopting the pin-type rotating structure, the impact-resistant threaded connector 4 effectively buffers and absorbs the pulse vibration from the pipeline and the jack, preventing wear, deformation and leakage of the connector 41 caused by long-term vibration. It significantly improves the working stability and service life of the valve under harsh working conditions. In addition, the impact-resistant threaded connector 4 can be quickly disassembled separately after damage, without having to remove the push jack from the support as a whole, which greatly shortens the maintenance time, ensures the continuity of underground mining operations, and improves the efficiency of operation.

[0021] The anti-impact threaded connector 4 corresponding to the hydraulic control check valve is used to connect the inlet hose of the control valve, and another anti-impact threaded connector 4 is used to connect the return hose of the control valve. By integrating the hydraulic control check valve, the inlet port 5 and the return port 6 into a valve body 1, and directly connecting the inlet hose and the return hose of the control valve through two anti-impact threaded connectors 4, the long intermediate pipeline section is eliminated, simplifying the hydraulic system structure. This not only reduces the risk of leakage that may be caused by multiple pipe connectors 41, but also improves the overall safety and enhances reliability.

[0022] In practical use, the hydraulic support push-type hydraulic control check valve of this utility model with anti-impact threaded joint is first connected to the rodless chamber and rod chamber of the jack through oil pipes, and then the two anti-impact threaded joints 4 are connected to the inlet hose and return hose of the control valve, respectively. Normal locking state: The cartridge valve core assembly 2 is in the locked state. At this time, the rodless chamber oil circuit is in the open state, and the piston rod of the push jack remains in the same position. The circuit between the return port and the rod chamber is also in the locked state to prevent uncontrolled backflow of hydraulic oil and ensure the stability of the support. Push jack extension (liquid inlet condition): When the control valve supplies liquid to the inlet hose, the pressure oil enters the valve body 1 through the corresponding anti-impact threaded connector 4, and then enters the rodless chamber of the push jack through the plug hole and the inlet port 5. At the same time, the returning hydraulic oil overcomes the spring force of the cartridge valve core assembly 2, opens the cartridge valve core assembly 2, and the returning hydraulic oil flows back to the control valve through the cartridge valve core assembly 2 and another anti-impact threaded connector 4, realizing the smooth extension of the piston rod.

[0023] Push jack retraction (return fluid condition): When the control valve supplies fluid to the return fluid hose, the pressurized oil enters the valve body 1 through the corresponding anti-impact threaded joint 4, and then enters the rod chamber of the push jack through the cartridge valve core assembly 2 and the return fluid interface 6. At the same time, the oil in the rodless chamber of the jack flows back to the control valve through the inlet interface 5, the inlet channel inside the screw plug 3, and another anti-impact threaded joint 4, so as to achieve smooth retraction of the piston rod.

Claims

1. A hydraulic support push-operated check valve with added impact-resistant threaded joints, comprising a valve body, a cartridge valve core assembly, a plug, and two impact-resistant threaded joints, characterized in that: The valve body is provided with a valve core hole, a plug hole and two threaded connector holes. The valve core hole and the plug hole are located on the left and right sides of the valve body, respectively. The two threaded connector holes are located on the front side of the valve body and are connected to the valve core hole and the plug hole, respectively. The bottom of the valve body is provided with an inlet port and a return port. The return port is connected to the valve core hole, and the inlet port is connected to the plug hole. The cartridge valve core assembly is assembled in the valve core hole, and the screw plug is assembled in the plug hole. The inner end of the screw plug is provided with a liquid inlet channel, so that the hydraulic oil entering the plug hole flows out through the liquid inlet interface through the liquid inlet channel. The two impact-resistant threaded connectors are respectively assembled into the two threaded connector holes.

2. The hydraulic support push-operated check valve with an anti-impact threaded joint as described in claim 1, characterized in that: The impact-resistant threaded connector includes a connector, a retainer, and a cylindrical pin. The connector and the retainer are arranged opposite to each other and are respectively provided with semi-circular grooves. The cylindrical pin is used to fix the connector and form a pin-type rotating structure. The connector is threadedly connected to the threaded connector hole.

3. The hydraulic support push-operated check valve with an anti-impact threaded joint as described in claim 1, characterized in that: The inlet and outlet ports are each equipped with sealing gaskets.

4. The hydraulic support push-operated check valve with an anti-impact threaded joint as described in claim 1, characterized in that: The anti-impact threaded connector corresponding to the hydraulic control check valve is used to connect the inlet hose of the control valve, and the other anti-impact threaded connector is used to connect the return hose of the control valve.

Images