A column type hydraulically controlled one-way control valve

Abstract

The present invention discloses a column-type hydraulically controlled one-way control valve, which relates to the technical field of control valves and aims to solve the technical problem that the sealing performance between the valve core and the valve body is easily affected by wear or impurities, resulting in a decrease in sealing performance and a reflux phenomenon of hydraulic oil. The valve comprises a hydraulically controlled valve body, a control assembly, a valve core assembly and a scraper assembly. The hydraulically controlled valve body has a pressure channel, a working channel, a control chamber, a valve core chamber and a scraper chamber. The pressure channel and the working channel are connected through a valve plug channel. The valve core assembly comprises a multi-stage valve plug body, and the multi-stage valve plug body is provided with a primary cone plug, a secondary cone plug and a tertiary cone plug. In the present invention, there is a multi-level sealing effect between the multi-stage valve plug body and the valve plug channel. Even if one of the cone plug structures of the multi-stage valve plug body is worn or adhered to by impurities, it can cooperate with the valve plug channel through the other two cone plug structures to achieve a sealing and flow blocking effect, thereby enhancing the advantage of the ability to prevent reflux.

Description

Technical Field

[0001] The present invention relates to the technical field of control valves, and more specifically to a column-type hydraulically controlled one-way control valve. Background Art

[0002] The valve body of the column type hydraulically controlled one-way control valve is usually a solid metal structure, which can be used to control the lifting function of the column in the hydraulic support system. It generally has an oil inlet, an oil outlet and a control oil port; the oil inlet and the oil outlet are used to connect the hydraulic cavity of the column, and the control oil port is used to receive external control signals to realize the hydraulic control function. Under normal circumstances, the hydraulic oil enters from the oil inlet, pushing the valve core to overcome the slight resistance of the spring, and the oil can pass smoothly and enter the working cavity of the column from the oil outlet to realize the lifting of the column; when the oil tries to flow in from the oil outlet in the reverse direction, the valve core is under the influence of the spring force and the reverse oil Under the joint action of pressure, the channel is tightly closed to prevent oil backflow; this is like a one-way valve, which ensures that the column can maintain a stable position when bearing load and will not fall due to oil backflow. When the column needs to be lowered, the external control oil enters the valve through the control oil port, and the control oil pressure acts on a specific part of the valve core. When this pressure reaches a certain value, it will overcome the spring force and possible reverse oil pressure, and push the valve core to move in the direction of opening the reverse channel. In this way, the oil in the working chamber of the column can flow out in the opposite direction through the hydraulically controlled one-way valve, thereby realizing the lowering action of the column.

[0003] In the hydraulic support system, the hydraulic support is used to support the roof of the mine tunnel, etc., among which the column is the key supporting component. The column-type hydraulically controlled one-way control valve can well control the telescopic action of the column. When the hydraulic cylinder lower chamber of the column is supplied with fluid to raise the column, the hydraulically controlled one-way valve is forwardly conducted. When the column needs to be kept in a certain position, the hydraulically controlled one-way valve is reversely blocked to prevent the column from retracting under the load. Only when the control oil port receives a signal to reversely conduct the hydraulically controlled one-way valve, the column can be retracted under the drive of the hydraulic oil; then, during the long-term use of the column-type hydraulically controlled one-way control valve, due to the wear between the valve core and the valve body, and the oxidation of the hydraulic oil during the long-term working process, some colloid substances are produced due to the oxidation of the hydraulic oil itself, the decomposition of additives, etc., these colloid substances may cause the valve core to stick to impurities, thereby destroying the sealing performance between the valve core and the valve body, causing a small amount of reflux of the hydraulic oil that should have been one-way blocked, and the reflux will cause the column to slowly descend or move, affecting the use effect of the column, which may cause safety hazards. In view of this, we propose a column-type hydraulically controlled one-way control valve. Summary of the invention

[0004] The purpose of the present invention is to provide a column-type hydraulically controlled one-way control valve to solve the technical problem that the sealing performance between the valve core and the valve body is easily affected by wear or impurities, resulting in reduced sealing performance and hydraulic oil backflow.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a column-type hydraulically controlled one-way control valve, comprising a column-type hydraulically controlled valve body; wherein the hydraulically controlled valve body has a plurality of hydraulic oil input ports, a plurality of hydraulic oil output ports A, a hydraulic oil output port B, a hydraulic oil output port C, a hydraulic oil output port D, a plurality of control oil ports A, a plurality of control oil ports B, a pressure channel, a working channel, a control chamber, a valve core chamber and a scraper chamber, wherein the pressure channel and the working channel are connected via a valve plug channel; a control component is arranged in the control chamber; a valve core component is arranged in the valve core chamber; a scraper component is arranged in the scraper chamber; the valve core component and the valve plug channel have a separated state and a closed state; in the separated state, the hydraulic oil in the pressure channel can flow into the working channel through the valve plug channel; in the closed state, the hydraulic oil in the working channel can be prevented from flowing back into the pressure channel; the control component is used to control the valve The core assembly is in a separated state from the valve plug channel, so that the hydraulic oil in the working channel can flow back into the pressure channel through the valve plug channel; wherein, the valve core assembly comprises a multi-stage valve plug body arranged in the valve plug channel, the multi-stage valve plug body is provided with a primary cone plug, a secondary cone plug and a tertiary cone plug, the secondary cone plug is arranged between the primary cone plug and the tertiary cone plug, the primary cone plug, the secondary cone plug and the tertiary cone plug are connected by a connecting column, and the side wall of the primary cone plug is connected with a worm wheel blade; the multi-stage valve plug body forms a three-stage blocking structure in the valve plug channel through the primary cone plug, the secondary cone plug and the tertiary cone plug; when the valve core assembly is in a separated state from the valve plug channel, the valve core assembly is impacted by the hydraulic oil in the pressure channel through the worm wheel blade, and can drive the valve core assembly to rotate, and cooperate with the scraper assembly to scrape the outer side wall of the multi-stage valve plug body to separate impurities on the outer side wall of the multi-stage valve plug body.

[0006] Preferably, two of the hydraulic oil input ports are symmetrically arranged on the two side walls of the hydraulic control valve body, and the two hydraulic oil input ports are connected through the pressure channel; two of the hydraulic oil output ports A are symmetrically arranged on the two side walls of the hydraulic control valve body, the hydraulic oil output port B and the hydraulic oil output port C are arranged on the other side wall of the hydraulic control valve body, and the hydraulic oil output port D is arranged on the top surface of the hydraulic control valve body, and the hydraulic oil output port A, hydraulic oil output port B, hydraulic oil output port C and hydraulic oil output port D are connected through the working channel; two of the control oil ports A are symmetrically arranged on the two side walls of the hydraulic control valve body, the control oil port B is arranged on the other side wall of the hydraulic control valve body, and the control oil port A and the control oil port B are connected through a control chamber; the scraper chamber is arranged on the side wall of the valve core chamber.

[0007] Preferably, the side walls of the first-stage cone plug, the second-stage cone plug and the third-stage cone plug are all configured as a structure combining a cylindrical surface and a conical surface, and the inner side wall of the valve plug channel is configured as a structure matching the shape of the multi-stage valve plug body.

[0008] Preferably, the control chamber includes a first sliding chamber, a connecting chamber is opened on the side wall of the first sliding chamber, and the output end of the connecting chamber is connected to the second sliding chamber; transmission chamber 1 and transmission chamber 2 are also arranged on the side of the scraper chamber, and the transmission chamber 2 is aligned with the second sliding chamber.

[0009] Preferably, the control component includes a sliding plug slidably arranged in the first sliding cavity, a side wall of the sliding plug is connected to a push rod, a plurality of sliding grooves are opened in the inner cavity of the push rod, and the push rod passes through the side wall of the first sliding cavity and extends into the pressure channel.

[0010] Preferably, the valve core assembly also includes a fixed plate connected to the inner wall of the valve core chamber, the side wall of the fixed plate is connected to a fixed column, the circumferential outer wall of the fixed column is sleeved with a slider and a spring 1, the side wall of the fixed plate and the side wall of the slider are connected by the spring 1, and the slider is embedded in the multi-stage valve plug body; wherein the slider is slidably matched with the fixed column, and the multi-stage valve plug body is rotatably matched with the slider.

[0011] Preferably, the side wall of the worm wheel blade is connected to a sleeve, a movable rod is arranged in the inner cavity of the sleeve, the circumferential outer wall of the movable rod is connected to the circumferential inner wall of the sleeve through a rotating bearing, and the movable rod rotates with the sleeve through the rotating bearing; the circumferential outer wall of the movable rod is connected to a push plate and a plurality of slides matching the slide groove, and the movable rod slides with the inner cavity of the push rod through the slide.

[0012] Preferably, the side wall of the three-stage cone plug is integrally formed with a rotating cylinder, and the side wall of the rotating cylinder is provided with a slot extending into the inner cavity of the three-stage cone plug, and the slot is used to provide an insertion space for the fixing column, wherein the inner wall of the slot is integrally formed with a ring plate and a connecting groove, the ring plate is an annular plate-shaped structure, and the connecting groove is an annular groove structure; the sliding block is arranged in the slot, and the sliding block is composed of a sliding cylinder and a second rotating bearing, the outer side wall of the sliding cylinder is connected to the circumferential inner wall of the second rotating bearing, the sliding cylinder is sleeved in the inner cavity of the ring plate, the sliding cylinder is rotatably matched with the ring plate, the second rotating bearing is arranged in the connecting groove, the circumferential outer wall of the second rotating bearing is connected to the inner side wall of the connecting groove, and the rotating cylinder is rotatably matched with the sliding cylinder through the second rotating bearing; the circumferential outer wall of the fixing column is provided with a plurality of strip grooves, and the circumferential inner wall of the sliding cylinder is integrally formed with a plurality of sliding strips that fit with the strip grooves, and the sliding cylinder is slidably matched with the strip grooves through the sliding strips.

[0013] Preferably, the scraper assembly includes a transmission rod arranged in the second sliding cavity, the transmission rod movably passes through the side wall of the second sliding cavity and extends into the second transmission cavity, the inner side wall of the second sliding cavity is connected to a limit plate, the transmission rod passes through the side wall of the limit plate, one end of the transmission rod is connected to a second sliding plug that slidably cooperates with the second sliding cavity, the circumferential outer wall of the transmission rod is connected to a baffle, the limit plate is arranged between the second sliding plug and the baffle, the side wall of the baffle is connected to a second spring sleeved on the circumferential outer wall of the transmission rod, and the other end of the second spring is connected to the first The second sliding cavity side wall, the outer side wall of the other end of the transmission rod is connected with a rack, and the rack is arranged in the second transmission chamber; the inner side wall of the first transmission chamber is rotatably connected with a rotating column, and one end of the rotating column is provided with a tooth mouth meshing with the rack, the other end of the rotating column is connected with bevel gear one, and the output end of bevel gear one is meshingly connected with bevel gear two, and the side wall of bevel gear two is connected with a movable column, the movable column passes through one side wall of the transmission chamber and extends into the scraper chamber, the movable column rotates with the inner side wall of the scraper chamber, and the side wall of the movable column is connected with a scraper plate.

[0014] Preferably, the scraper plate is composed of a first scraper, a second scraper and a third scraper, the side wall of the first scraper is set to a slope structure that matches the shape of the side wall of the first-level cone plug, the side wall of the second scraper is set to a slope structure that matches the shape of the side wall of the second-level cone plug, and the side wall of the third scraper is set to a slope structure that matches the shape of the side wall of the tertiary cone plug.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention forms a sealing structure by designing a multi-stage valve plug body and a valve plug channel to be plugged in, which can effectively prevent the hydraulic oil in the working channel from flowing back into the pressure channel, and forms a three-stage blocking structure in the valve plug channel through the first-stage cone plug, the second-stage cone plug and the third-stage cone plug on the multi-stage valve plug body, so that there is a multi-level sealing effect between the multi-stage valve plug body and the valve plug channel. Even if one of the cone plug structures of the multi-stage valve plug body is worn or adhered to by impurities, it can cooperate with the valve plug channel through the other two cone plug structures to achieve a sealing and flow blocking effect, thereby enhancing the ability of the device to prevent backflow.

[0017] 2. The present invention also sets the side walls of the first-stage cone plug, the second-stage cone plug and the third-stage cone plug as a structure combining a cylindrical surface and a conical surface, so that after the first-stage cone plug, the second-stage cone plug and the third-stage cone plug are inserted into the valve plug channel, their conical surface structures can fit tightly with the valve plug channel, further improving the sealing effect of the valve plug channel and enhancing the ability of the device to prevent backflow.

[0018] 3. The present invention also enables the valve core assembly to rotate by being impacted by the hydraulic oil in the pressure channel through the worm wheel blades when the valve core assembly and the valve plug channel are in a separated state, and cooperates with the scraper assembly to scrape the outer wall of the multi-stage valve plug body, thereby separating impurities on the outer wall of the multi-stage valve plug body, and thus improving the sealing effect of the multi-stage valve plug body and the valve plug channel.

[0019] 4. The present invention forms a supporting effect on the multi-stage valve plug body by designing a movable rod and a slider, and ensures that the multi-stage valve plug body can be relatively stable when it moves horizontally through the sliding cooperation between the movable rod and the inner cavity of the push rod, and the sliding cooperation between the slider and the fixed column. The movable rod and the sleeve rotate together, that is, the movable rod rotates with the multi-stage valve plug body. At the same time, the multi-stage valve plug body and the slider rotate together, which ensures that the multi-stage valve plug body can rotate smoothly and stably, so that the multi-stage valve plug body can perform horizontal movement and rotational motion relatively stably while ensuring structural stability.

[0020] 5. The present invention has a ring plate and a connecting groove integrally formed on the inner wall of the slot. The annular plate structure of the ring plate can be used to embed the slide cylinder in the ring plate and form a rotational connection relationship. The annular groove structure of the connecting groove can be used to embed the second rotating bearing therein and connect it to the circumferential outer wall of the second rotating bearing, so that the rotating cylinder can maintain a good rotational relationship with the slider and can slide on the fixed column synchronously with the slider, further ensuring the stability of the horizontal movement and rotational movement of the multi-stage valve plug body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal chamber structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the control component and the valve core component of the present invention;

[0025] Figure 5 It is a schematic diagram of the cutaway structure of the push rod of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the valve core assembly of the present invention from another perspective;

[0027] Figure 7 It is a schematic diagram of the split structure of the movable rod and the sleeve of the present invention;

[0028] Figure 8 It is a schematic diagram of the split structure of the rotating drum and the sliding block of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cutaway structure of the multi-stage valve plug body of the present invention;

[0030] Fig.10 It is a schematic diagram of the split structure of the slider and the fixed column of the present invention;

[0031] Fig.11 It is a schematic diagram of the first slide cavity structure of the present invention;

[0032] Fig.12 It is an enlarged schematic diagram of the structure of point A of the present invention;

[0033] Fig.13 It is a schematic diagram of the cross-sectional structure of the second sliding cavity of the present invention;

[0034] Fig.14 It is a schematic diagram of the structure of the scraping filter assembly of the present invention;

[0035] Fig.15 It is a schematic diagram of the structure of the scraper plate of the present invention;

[0036] Fig.16 The figure is a schematic diagram of a usage state of the present invention.

[0037] Description of the numbers in the figure:

[0038] 1. Hydraulic control valve body; 2. Control assembly; 3. Valve core assembly; 4. Scraper assembly;

[0039] 101, hydraulic oil input port; 102, hydraulic oil output port A; 103, hydraulic oil output port B; 104, hydraulic oil output port C; 105, hydraulic oil output port D; 106, control oil port A; 107, control oil port B; 108, pressure channel; 109, working channel; 110, control chamber; 111, valve core chamber; 112, scraper chamber; 113, valve plug channel; 114, transmission chamber 1; 115, transmission chamber 2; 1101, first sliding chamber; 1102, connecting chamber; 1103, second sliding chamber; 1104, limit plate;

[0040] 201, slide plug 1; 202, push rod; 203, slide groove;

[0041] 31. Multi-stage valve plug body; 32. Fixed plate; 33. Fixed column; 34. Slider; 35. Spring 1;

[0042] 3101, first-stage cone plug; 3102, second-stage cone plug; 3103, third-stage cone plug; 3104, connecting column; 3105, worm wheel blade; 3106, sleeve; 3107, movable rod; 3108, rotating bearing 1; 3109, slide plate; 3110, rotating cylinder; 3111, slot; 31101, ring plate; 31102, connecting groove; 3112, push plate; 3301, strip groove; 3401, slide cylinder; 3402, rotating bearing 2; 3403, slide bar;

[0043] 401, transmission rod; 402, sliding plug 2; 403, baffle; 404, spring 2; 405, rack; 406, rotating column; 407, tooth mouth; 408, bevel gear 1; 409, bevel gear 2; 410, movable column; 411, scraper plate; 4111, first scraper; 4112, second scraper; 4113, third scraper. DETAILED DESCRIPTION

[0044] Embodiment 1, as Figures 1 to 16 As shown, the present invention relates to a column-type hydraulically controlled one-way control valve, including a column-type hydraulically controlled valve body 1, the hydraulically controlled valve body 1 is used to control the lifting function of the column in the external hydraulic support system, wherein the hydraulically controlled valve body 1 has two hydraulic oil input ports 101, two hydraulic oil output ports A102, a hydraulic oil output port B103, a hydraulic oil output port C104, a hydraulic oil output port D105, two control oil ports A106, two control oil ports B107, a pressure channel 108, a working channel 109, a control chamber 110, a valve core chamber 111 and a scraper chamber 112, and the pressure channel 108 and the working channel 109 are connected through a valve plug channel 113.

[0045] Among them, the hydraulic oil input port 101 is connected to the external hydraulic pump, which is used to introduce the hydraulic oil into the pressure channel 108. The hydraulic oil output port A102, the hydraulic oil output port B103, the hydraulic oil output port C104, and the hydraulic oil output port D105 are connected to the inner cavities of multiple columns in the external hydraulic support system, which are used to transport the hydraulic oil passing through the valve plug channel 113 to the internal working chambers of multiple columns in the external hydraulic support system. In the column system of the external hydraulic support, when the column needs to be raised, the hydraulic oil output by the external hydraulic pump enters the valve plug channel 113 through the hydraulic oil input port 101, and the hydraulic oil is guided into the working channel 109 through the valve plug channel 113. The working channel 109 guides the hydraulic oil into the oil chamber of the column in the external hydraulic support system, so that the column extends, thereby supporting the top plate and other structures.

[0046] Among them, two hydraulic oil input ports 101 are symmetrically arranged on the two side walls of the hydraulic control valve body 1, and the two hydraulic oil input ports 101 are connected through the pressure channel 108. By designing two hydraulic oil input ports 101, more input sources can be provided for inputting hydraulic oil into the pressure channel 108; among them, two hydraulic oil output ports A102 are symmetrically arranged on the two side walls of the hydraulic control valve body 1, hydraulic oil output port B103 and hydraulic oil output port C104 are arranged on the other side wall of the hydraulic control valve body 1, and hydraulic oil output port D105 is arranged on the top surface of the hydraulic control valve body 1. Hydraulic oil output ports A102, hydraulic oil output ports B103, The hydraulic oil outlet C104 and the hydraulic oil outlet D105 are connected through the working channel 109. By designing multiple hydraulic oil outlets, hydraulic oil can be provided to multiple external columns; the two control oil ports A106 are symmetrically arranged on the two side walls of the hydraulic control valve body 1, and the control oil port B107 is arranged on the other side wall of the hydraulic control valve body 1. The control oil port A106 and the control oil port B107 are connected through the control chamber 110. The function of the control oil port is to receive the control oil of the external equipment and guide the control oil into the control chamber 110; the scraper chamber 112 is arranged on the side wall of the valve core chamber 111.

[0047] In an embodiment of the present invention, the control component 2 is arranged in the control chamber 110; the valve core component 3 is arranged in the valve core chamber 111; the scraper component 4 is arranged in the scraper chamber 112; the valve core component 3 and the valve plug channel 113 have a separated state and a closed state; in the separated state, the hydraulic oil in the pressure channel 108 can flow to the working channel 109 through the valve plug channel 113; in the closed state, the hydraulic oil in the working channel 109 can be prevented from flowing back into the pressure channel 108; the control component 2 is used to control the valve core component 3 and the valve plug channel 113 to form a separated state, so that the hydraulic oil in the working channel 109 can flow back into the pressure channel 108 through the valve plug channel 113.

[0048] The valve core assembly 3 includes a multi-stage valve plug body 31 arranged in the valve plug channel 113, the multi-stage valve plug body 31 is plugged with the valve plug channel 113, and a first-stage cone plug 3101, a second-stage cone plug 3102 and a third-stage cone plug 3103 are arranged on the multi-stage valve plug body 31, the second-stage cone plug 3102 is arranged between the first-stage cone plug 3101 and the third-stage cone plug 3103, the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103 are connected by a connecting column 3104, and a worm wheel blade 3105 is connected to the side wall of the first-stage cone plug 3101; the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103 are connected by a connecting column 3104. The side walls of the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103 are all configured as a structure combining a cylindrical surface and a conical surface, and the inner side wall of the valve plug channel 113 is configured as a structure matching the shape of the multi-stage valve plug body 31. By configuring the side walls of the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103 as a structure combining a cylindrical surface and a conical surface, after the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103 are inserted into the valve plug channel 113, their conical surface structures can fit tightly with the valve plug channel 113; the multi-stage valve plug body 31 forms a three-stage blocking structure in the valve plug channel 113 through the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103.

[0049] The present invention forms a sealing structure by designing a multi-stage valve plug body 31 and a valve plug channel 113 to be plugged in, which can effectively prevent the hydraulic oil in the working channel 109 from flowing back into the pressure channel 108, and forms a three-stage blocking structure in the valve plug channel 113 through the first-stage cone plug 3101, the second-stage cone plug 3102 and the third-stage cone plug 3103 on the multi-stage valve plug body 31, so that there is a multi-level sealing effect between the multi-stage valve plug body 31 and the valve plug channel 113. Even if one of the cone plug structures of the multi-stage valve plug body 31 is worn or adhered to by impurities, it can cooperate with the valve plug channel 113 through the other two cone plug structures to achieve a sealing and flow blocking effect, thereby enhancing the ability of the device to prevent backflow.

[0050] In an embodiment of the present invention, when the valve core assembly 3 and the valve plug channel 113 are in a separated state, the valve core assembly 3 is impacted by the hydraulic oil in the pressure channel 108 through the worm wheel blade 3105, which can drive the valve core assembly 3 to rotate, and cooperate with the scraper assembly 4 to scrape the outer wall of the multi-stage valve plug body 31 to separate impurities on the outer wall of the multi-stage valve plug body 31, thereby improving the sealing effect of the multi-stage valve plug body 31 and the valve plug channel 113.

[0051] As another embodiment of the present invention, the control chamber 110 includes a first sliding chamber 1101, a connecting chamber 1102 is opened on the side wall of the first sliding chamber 1101, and the output end of the connecting chamber 1102 is connected to the second sliding chamber 1103; a transmission chamber 114 and a transmission chamber 2 115 are also arranged on the side of the scraper chamber 112, and the transmission chamber 2 115 is aligned with the second sliding chamber 1103.

[0052] The control assembly 2 includes a sliding plug 201 slidably arranged in the first sliding cavity 1101, a push rod 202 is connected to the side wall of the sliding plug 201, a plurality of sliding grooves 203 are provided in the inner cavity of the push rod 202, and the push rod 202 passes through the side wall of the first sliding cavity 1101 and extends into the pressure channel 108; the control oil of the external device is received through the control oil port A106 and the control oil port B107, and the control oil is guided into the control chamber 110, and the control oil flows into the first sliding cavity 1101 in the control chamber 110, thereby pushing the sliding plug 201 to slide forward along the first sliding cavity 1101, and then driving the push rod 202 to push forward, when the sliding plug 201 moves to the terminal of the first sliding cavity 1101, the connecting cavity 1102 is exposed, at this time, the control oil flows from the first sliding cavity 1101 into the connecting cavity 1102, and flows into the second sliding cavity 1103 through the connecting cavity 1102.

[0053] As another embodiment of the present invention, the valve core assembly 3 also includes a fixed plate 32 connected to the inner side wall of the valve core chamber 111, the side wall of the fixed plate 32 is connected to a fixed column 33, the outer wall of the circumference of the fixed column 33 is sleeved with a slider 34 and a spring 35, the side wall of the fixed plate 32 and the side wall of the slider 34 are connected by a spring 35, and the slider 34 is embedded in the multi-stage valve plug body 31; wherein the slider 34 is slidably matched with the fixed column 33, and the multi-stage valve plug body 31 is rotationally matched with the slider 34; the worm wheel blade 310 The side wall is connected with a sleeve 3106, and a movable rod 3107 is arranged in the inner cavity of the sleeve 3106. The outer circumferential wall of the movable rod 3107 is connected with the inner circumferential wall of the sleeve 3106 through a rotating bearing 3108, and the movable rod 3107 is rotatably matched with the sleeve 3106 through the rotating bearing 3108; the outer circumferential wall of the movable rod 3107 is connected with a push plate 3112 and a plurality of slide plates 3109 matched with the slide groove 203, and the movable rod 3107 is slidably matched with the inner cavity of the push rod 202 through the slide plate 3109.

[0054] The present invention forms a supporting effect on the multi-stage valve plug body 31 by designing the movable rod 3107 and the slider 34, and ensures that the multi-stage valve plug body 31 can be relatively stable when it moves horizontally through the sliding cooperation between the movable rod 3107 and the inner cavity of the push rod 202, and the sliding cooperation between the slider 34 and the fixed column 33, and ensures that the multi-stage valve plug body 31 can be relatively smooth and stable when it rotates through the rotation cooperation between the movable rod 3107 and the sleeve 3106, that is, the movable rod 3107 and the multi-stage valve plug body 31, and at the same time, the multi-stage valve plug body 31 and the slider 34 rotate to ensure that the multi-stage valve plug body 31 can be relatively smooth and stable when it rotates, so that the multi-stage valve plug body 31 can be relatively stable when the structural stability is guaranteed.

[0055] Furthermore, a rotating cylinder 3110 is integrally formed on the side wall of the third-stage cone plug 3103, and a slot 3111 extending to the inner cavity of the third-stage cone plug 3103 is provided on the side wall of the rotating cylinder 3110, and the slot 3111 is used to provide an insertion space for the fixing column 33; wherein, a ring plate 31101 and a connecting groove 31102 are integrally formed on the inner side wall of the slot 3111, and the ring plate 31101 is an annular plate structure, and the connecting groove 31102 is an annular groove structure; the slider 34 is arranged in the slot 3111, and the slider 34 It is composed of a slide 3401 and a second rotating bearing 3402. The outer wall of the slide 3401 is connected to the inner wall of the circumference of the second rotating bearing 3402. The slide 3401 is sleeved in the inner cavity of the ring plate 31101. The slide 3401 and the ring plate 31101 are rotatably matched. The second rotating bearing 3402 is arranged in the connecting groove 31102. The outer wall of the circumference of the second rotating bearing 3402 is connected to the inner wall of the connecting groove 31102. The rotating drum 3110 is rotatably matched with the slide 3401 through the second rotating bearing 3402.

[0056] The outer circumferential wall of the fixed column 33 is provided with a plurality of strip grooves 3301 , and the inner circumferential wall of the slide cylinder 3401 is integrally formed with a plurality of slide bars 3403 that fit with the strip grooves 3301 , and the slide cylinder 3401 slidably cooperates with the strip grooves 3301 through the slide bars 3403 .

[0057] The present invention has a ring plate 31101 and a connecting groove 31102 integrally formed on the inner wall of the slot 3111. The annular plate structure of the ring plate 31101 can be used to embed the slide cylinder 3401 in the ring plate 31101 and form a rotational connection relationship. The annular groove structure of the connecting groove 31102 can be used to embed the rotating bearing 3402 therein and connect it to the circumferential outer wall of the rotating bearing 3402, so that the rotating cylinder 3110 can maintain a good rotational relationship with the slider 34 and can slide on the fixed column 33 synchronously with the slider 34, further ensuring the stability of the horizontal movement and rotational movement of the multi-stage valve plug body 31.

[0058] As another embodiment of the present invention, the scraper assembly 4 includes a transmission rod 401 arranged in the second slide cavity 1103, the transmission rod 401 movably penetrates the side wall of the second slide cavity 1103 and extends into the second transmission chamber 115, the inner wall of the second slide cavity 1103 is connected to the limit plate 1104, the transmission rod 401 penetrates the side wall of the limit plate 1104, one end of the transmission rod 401 is connected to the second slide plug 402 that slides with the second slide cavity 1103, and the transmission rod 40 The outer wall of the circumference of the transmission rod 401 is connected to a baffle 403, and the limit plate 1104 is arranged between the second sliding plug 402 and the baffle 403. The side wall of the baffle 403 is connected to a spring 404 sleeved on the outer wall of the circumference of the transmission rod 401. The other end of the spring 404 is connected to the side wall of the second sliding cavity 1103. The outer wall of the other end of the transmission rod 401 is connected to a rack 405, and the rack 405 is arranged in the second transmission chamber 115; the inner wall of the transmission chamber 114 is rotatably connected to a rotating The rotating column 406 has a toothed opening 407 meshed with the rack 405 at one end, and the other end of the rotating column 406 is connected to a bevel gear 1 408, and the output end of the bevel gear 1 408 is meshed with a bevel gear 2 409, and the side wall of the bevel gear 2 409 is connected to a movable column 410, which penetrates the side wall of the transmission chamber 114 and extends into the scraping chamber 112, and the movable column 410 rotates with the inner wall of the scraping chamber 112, and the movable column 410 rotates with the inner wall of the scraping chamber 112. The side wall of the column 410 is connected to a scraper plate 411; the scraper plate 411 is composed of a first scraper plate 4111, a second scraper plate 4112 and a third scraper plate 4113. The side wall of the first scraper plate 4111 is arranged to have an inclined surface structure matching the shape of the side wall of the first-stage cone plug 3101, the side wall of the second scraper plate 4112 is arranged to have an inclined surface structure matching the shape of the side wall of the second-stage cone plug 3102, and the side wall of the third scraper plate 4113 is arranged to have an inclined surface structure matching the shape of the side wall of the third-stage cone plug 3103.

[0059] When the first slide plug 201 moves forward to the terminal of the first slide cavity 1101, the connecting cavity 1102 is exposed. At this time, the control oil flows from the first slide cavity 1101 into the connecting cavity 1102, and flows into the second slide cavity 1103 through the connecting cavity 1102. The control oil pushes the second slide plug 402, and the second slide plug 402 drives the transmission rod 401 to move forward in the second slide cavity 1103. The rack 405 on the transmission rod 401 drives the rotating column 406 to rotate through the toothed opening 407 engaged with it. The rotating column 406 drives the bevel gear 2 409 to rotate through the bevel gear 1 408, and then drives the movable column 410 to rotate. The movable column 410 makes the scraper plate 411 rotate and leave the scraper chamber 112 until the scraper plate 411 contacts the outer side walls of the first cone plug 3101, the second cone plug 3102 and the third cone plug 3103 of the multi-stage valve plug body 31. Through the rotation of the multi-stage valve plug body 31, the scraper plate 411 can scrape impurities from its outer side wall.

[0060] Embodiment 2: This embodiment provides a method for using a column-type hydraulically controlled one-way control valve:

[0061] S1, one-way flow state, the hydraulic oil output by the external hydraulic pump enters the pressure channel 108 through the hydraulic oil input port 101, and flows into the valve plug channel 113 through the pressure channel 108, the hydraulic oil generates pressure on the multi-stage valve plug body 31, pushing the multi-stage valve plug body 31 to move forward, the multi-stage valve plug body 31 drives the slider 34 to slide along the fixed column 33, and compresses the spring 1 35 until the multi-stage valve plug body 31 is separated from the valve plug channel 113, at this time, the valve plug channel 113 is in the open state, the hydraulic oil will flow into the working channel 109 through the valve plug channel 113, and the working channel 109 will transfer the hydraulic oil from the hydraulic oil output port A1 02. The hydraulic oil outlet B103, the hydraulic oil outlet C104 and the hydraulic oil outlet D105 are guided to the oil chamber of the column of the external hydraulic support system, so that the column extends and works. When the external hydraulic pump stops outputting the hydraulic oil, the hydraulic oil in the pressure channel 108 no longer flows into the valve plug channel 113. At this time, the multi-stage valve plug body 31 loses the thrust of the hydraulic oil, and the slider 34 is acted upon by the elastic force of the spring 1 35, driving the slider 34 to slide back along the fixed column 33, driving the multi-stage valve plug body 31 to insert into the valve plug channel 113, making the valve plug channel 113 closed, preventing the hydraulic oil in the working channel 109 from flowing back.

[0062] S2, reflux state, when it is necessary to extract the hydraulic oil in the oil chamber of the column of the external hydraulic support system, the control oil of the external device is received through the control oil port A106 and the control oil port B107, and the control oil is directed into the control chamber 110, and the control oil flows in the control chamber 110 to the first sliding cavity 1101, thereby pushing the sliding plug 201 to slide forward along the first sliding cavity 1101, and then driving the push rod 202 to push forward, the push rod 202 pushes the push plate 3112, and the push plate 3112 drives the multi-stage valve plug body 31 to move forward, so that the multi-stage valve plug body 31 and the valve plug channel 113 form a separation state, the valve plug channel 113 is opened, and the hydraulic oil in the pressure channel 108 can flow to the working channel 109 through the valve plug channel 113, completing the reflux action;

[0063] S3, scraping operation, when it is necessary to clean the outer wall of the multi-stage valve plug body 31, the multi-stage valve plug body 31 is moved forward by the operation of S2, and the multi-stage valve plug body 31 and the valve plug channel 113 are separated, and when the slide plug 201 moves forward to the terminal of the first slide cavity 1101, the connecting cavity 1102 is exposed, at this time, the control oil flows from the first slide cavity 1101 into the connecting cavity 1102, and flows through the connecting cavity 1102 to the second slide cavity 1103, and the control oil pushes The second sliding plug 402 drives the transmission rod 401 to move forward in the second sliding cavity 1103, and the rack 405 on the transmission rod 401 drives the rotating column 406 to rotate through the toothed opening 407 meshing with it. The rotating column 406 drives the second bevel gear 409 to rotate through the bevel gear 1 408, thereby driving the movable column 410 to rotate. The movable column 410 makes the scraper plate 411 rotate with it and leave the scraper chamber 112 until the scraper plate 411 and the first cone plug 31 of the multi-stage valve plug body 31 are connected. 01. The outer walls of the secondary cone plug 3102 and the tertiary cone plug 3103 are in contact with each other, and then the hydraulic oil is delivered to the pressure channel 108 through the external hydraulic pump, and the hydraulic oil flows into the working channel 109 through the valve plug channel 113. When the hydraulic oil enters the valve plug channel 113, the hydraulic oil will impact the worm wheel blade 3105, driving the worm wheel blade 3105 to rotate, thereby causing one end of the multi-stage valve plug body 31 to rotate around the movable rod 3107 through the rotating bearing 1 3108, and the other end of the multi-stage valve plug body 31 to rotate around the movable rod 3107 through the rotating bearing 2 3108. 402 rotates around the slide 3401. During the rotation of the multi-stage valve plug body 31, the outer walls of the first-stage cone plug 3101, the second-stage cone plug 3102 and the tertiary cone plug 3103 respectively form a scraping effect with the first scraper 4111, the second scraper 4112 and the third scraper 4113, and the impurities on the outer walls of the corresponding first-stage cone plug 3101, the second-stage cone plug 3102 and the tertiary cone plug 3103 are scraped and filtered through the first scraper 4111, the second scraper 4112 and the third scraper 4113.

[0064] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A column type hydraulically controlled one-way control valve, characterized in that: include: A column type hydraulic control valve body (1); The hydraulic control valve body (1) comprises a plurality of hydraulic oil input ports (101), a plurality of hydraulic oil output ports A (102), a hydraulic oil output port B (103), a hydraulic oil output port C (104), a hydraulic oil output port D (105), a plurality of control oil ports A (106), a plurality of control oil ports B (107), a pressure channel (108), a working channel (109), a control chamber (110), a valve core chamber (111) and a scraper chamber (112); the pressure channel (108) and the working channel (109) are connected via a valve plug channel (113); A control component (2) arranged in the control chamber (110); A valve core assembly (3) arranged in the valve core chamber (111); A scraper assembly (4) arranged in the scraper chamber (112); The valve core assembly (3) and the valve plug channel (113) have a separated state and a closed state; in the separated state, the hydraulic oil in the pressure channel (108) can flow into the working channel (109) through the valve plug channel (113); in the closed state, the hydraulic oil in the working channel (109) can be prevented from flowing back into the pressure channel (108); The control component (2) is used to control the valve core component (3) and the valve plug channel (113) to form a separation state, so that the hydraulic oil in the working channel (109) can flow back into the pressure channel (108) through the valve plug channel (113); The valve core assembly (3) comprises a multi-stage valve plug body (31) arranged in the valve plug channel (113); a first-stage cone plug (3101), a second-stage cone plug (3102) and a third-stage cone plug (3103) are provided on the multi-stage valve plug body (31); the second-stage cone plug (3102) is arranged between the first-stage cone plug (3101) and the third-stage cone plug (3103); the first-stage cone plug (3101), the second-stage cone plug (3102) and the third-stage cone plug (3103) are connected via a connecting column (3104); and a worm wheel blade (3105) is connected to the side wall of the first-stage cone plug (3101); The multi-stage valve plug body (31) forms a three-stage blocking structure in the valve plug channel (113) through the first-stage cone plug (3101), the second-stage cone plug (3102) and the third-stage cone plug (3103); When the valve core assembly (3) and the valve plug channel (113) are in a separated state, the valve core assembly (3) is impacted by the hydraulic oil in the pressure channel (108) through the worm wheel blades (3105), thereby driving the valve core assembly (3) to rotate, and cooperates with the scraper assembly (4) to scrape the outer wall of the multi-stage valve plug body (31) to separate impurities on the outer wall of the multi-stage valve plug body (31).

2. A column type hydraulically controlled one-way control valve according to claim 1, characterized in that: The two hydraulic oil input ports (101) are symmetrically arranged on two side walls of the hydraulic control valve body (1), and the two hydraulic oil input ports (101) are connected via the pressure channel (108); The two hydraulic oil outlets A (102) are symmetrically arranged on two side walls of the hydraulic control valve body (1), the hydraulic oil outlet B (103) and the hydraulic oil outlet C (104) are arranged on the other side wall of the hydraulic control valve body (1), and the hydraulic oil outlet D (105) is arranged on the top surface of the hydraulic control valve body (1), and the hydraulic oil outlet A (102), the hydraulic oil outlet B (103), the hydraulic oil outlet C (104) and the hydraulic oil outlet D (105) are connected through the working channel (109); The two control oil ports A (106) are symmetrically arranged on two side walls of the hydraulic control valve body (1), and the control oil port B (107) is arranged on the other side wall of the hydraulic control valve body (1), and the control oil port A (106) and the control oil port B (107) are connected via a control chamber (110); The scraper chamber (112) is arranged on a side wall of the valve core chamber (111).

3. A column type hydraulically controlled one-way control valve according to claim 2, characterized in that: The side walls of the first-stage cone plug (3101), the second-stage cone plug (3102) and the third-stage cone plug (3103) are all configured as a structure combining a cylindrical surface and a conical surface, and the inner side wall of the valve plug channel (113) is configured as a structure matching the shape of the multi-stage valve plug body (31).

4. A column type hydraulically controlled one-way control valve according to claim 3, characterized in that: The control chamber (110) comprises a first sliding chamber (1101), a side wall of the first sliding chamber (1101) is provided with a connecting chamber (1102), and an output end of the connecting chamber (1102) is connected to a second sliding chamber (1103); Transmission chamber 1 (114) and transmission chamber 2 (115) are also arranged on the side of the scraping chamber (112), and the transmission chamber 2 (115) is aligned with the second sliding chamber (1103).

5. A column type hydraulically controlled one-way control valve according to claim 4, characterized in that: The control component (2) comprises a sliding plug (201) slidably arranged in the first sliding cavity (1101); a push rod (202) is connected to a side wall of the sliding plug (201); a plurality of sliding grooves (203) are formed in an inner cavity of the push rod (202); the push rod (202) passes through the side wall of the first sliding cavity (1101) and extends into the pressure channel (108).

6. A column type hydraulically controlled one-way control valve according to claim 5, characterized in that: The valve core assembly (3) further comprises a fixing plate (32) connected to the inner side wall of the valve core chamber (111); the side wall of the fixing plate (32) is connected to a fixing column (33); the outer circumferential wall of the fixing column (33) is sleeved with a slider (34) and a spring (35); the side wall of the fixing plate (32) and the side wall of the slider (34) are connected via the spring (35); the slider (34) is embedded in the multi-stage valve plug body (31); The slider (34) is slidably matched with the fixed column (33), and the multi-stage valve plug body (31) is rotationally matched with the slider (34).

7. A column type hydraulically controlled one-way control valve according to claim 6, characterized in that: The side wall of the worm wheel blade (3105) is connected to a sleeve (3106), the inner cavity of the sleeve (3106) is arranged with a movable rod (3107), the circumferential outer wall of the movable rod (3107) is connected to the circumferential inner wall of the sleeve (3106) via a rotating bearing (3108), and the movable rod (3107) is rotatably matched with the sleeve (3106) via the rotating bearing (3108); The outer circumferential wall of the movable rod (3107) is connected to a push plate (3112) and a plurality of slide plates (3109) that fit with the slide groove (203), and the movable rod (3107) is slidably matched with the inner cavity of the push rod (202) through the slide plates (3109).

8. A column type hydraulically controlled one-way control valve according to claim 7, characterized in that: The side wall of the three-stage cone plug (3103) is integrally formed with a rotating cylinder (3110), and the side wall of the rotating cylinder (3110) is provided with a slot (3111) extending to the inner cavity of the three-stage cone plug (3103), and the slot (3111) is used to provide an insertion space for the fixing column (33); The inner side wall of the slot (3111) is integrally formed with a ring plate (31101) and a connecting groove (31102); the ring plate (31101) is an annular plate structure, and the connecting groove (31102) is an annular groove structure; The slider (34) is arranged in the slot (3111), the slider (34) is composed of a slide cylinder (3401) and a second rotating bearing (3402), the outer wall of the slide cylinder (3401) is connected to the inner wall of the circumference of the second rotating bearing (3402), the slide cylinder (3401) is sleeved in the inner cavity of the ring plate (31101), the slide cylinder (3401) and the ring plate (31101) are rotatably matched, the second rotating bearing (3402) is arranged in the connecting groove (31102), the outer wall of the circumference of the second rotating bearing (3402) is connected to the inner wall of the connecting groove (31102), and the rotating cylinder (3110) is rotatably matched with the slide cylinder (3401) through the second rotating bearing (3402); The fixed column (33) has a plurality of strip grooves (3301) formed on the circumferential outer wall, and the slide cylinder (3401) has a plurality of slide bars (3403) integrally formed on the circumferential inner wall thereof, which are matched with the strip grooves (3301). The slide cylinder (3401) is slidably matched with the strip grooves (3301) via the slide bars (3403).

9. A column type hydraulically controlled one-way control valve according to claim 8, characterized in that: The scraper assembly (4) comprises a transmission rod (401) arranged in the second sliding cavity (1103); the transmission rod (401) movably passes through the side wall of the second sliding cavity (1103) and extends into the second transmission chamber (115); the inner side wall of the second sliding cavity (1103) is connected to a limit plate (1104); the transmission rod (401) passes through the side wall of the limit plate (1104); one end of the transmission rod (401) is connected to a second sliding plug (402) that slidably cooperates with the second sliding cavity (1103); The outer circumferential wall of the rod (401) is connected to a baffle (403), the limit plate (1104) is arranged between the second sliding plug (402) and the baffle (403), the side wall of the baffle (403) is connected to a second spring (404) sleeved on the outer circumferential wall of the transmission rod (401), the other end of the second spring (404) is connected to the side wall of the second sliding cavity (1103), the outer side wall of the other end of the transmission rod (401) is connected to a rack (405), and the rack (405) is arranged in the second transmission chamber (115); The inner wall of the transmission chamber 1 (114) is rotatably connected to a rotating column (406), one end of the rotating column (406) is provided with a tooth opening (407) meshingly connected to the rack (405), the other end of the rotating column (406) is connected to a bevel gear 1 (408), the output end of the bevel gear 1 (408) is meshingly connected to a bevel gear 2 (409), the side wall of the bevel gear 2 (409) is connected to a movable column (410), the movable column (410) passes through the side wall of the transmission chamber 1 (114) and extends into the scraper chamber (112), the movable column (410) is rotatably matched with the inner wall of the scraper chamber (112), and the side wall of the movable column (410) is connected to a scraper plate (411).

10. A column type hydraulically controlled one-way control valve according to claim 9, characterized in that: The scraper plate (411) is composed of a first scraper plate (4111), a second scraper plate (4112) and a third scraper plate (4113); the side wall of the first scraper plate (4111) is configured as an inclined surface structure matching the shape of the side wall of the first-stage cone plug (3101); the side wall of the second scraper plate (4112) is configured as an inclined surface structure matching the shape of the side wall of the second-stage cone plug (3102); and the side wall of the third scraper plate (4113) is configured as an inclined surface structure matching the shape of the side wall of the third-stage cone plug (3103).

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