Graded flow control unloading emulsion pump

Abstract

The utility model relates to the technical field of unloading valves, and discloses a graded flow control unloading emulsion pump which comprises an emulsion pump body and an unloading valve, the unloading valve comprises a pilot valve, a one-way valve and an unloading main valve, a containing groove is formed in the cavity wall of the one-way valve, a control valve is inserted in the containing groove in a sealed and inserted fit mode, and the control valve comprises a shell and a valve element. Wherein a liquid inlet and a liquid outlet are formed in the shell, the liquid inlet of the shell is communicated with the liquid inlet of the one-way valve, and the liquid outlet of the shell is communicated with the liquid outlet of the one-way valve; the shell is matched with the containing groove in an inserted mode, the shell seals a gap between the shell and the inner wall of the containing groove through a sealing unit, and the shell is fixed into the containing groove through a locking unit. The valve element is arranged in the shell and used for controlling connection and disconnection of the liquid inlet and the liquid outlet of the shell. The one-way valve has the effect of facilitating maintenance of the one-way valve.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of unloading valves, in particular to a hierarchical flow control unloading emulsion pump. BACKGROUND

[0002] The unloading valve of the emulsion pump is a key component in the equipment such as the hydraulic support of the comprehensive mining working face of the coal mine. It is responsible for supplying high-pressure emulsion to the comprehensive mining equipment such as the hydraulic support in the process of continuous operation of the emulsion pump. More importantly, the unloading valve can unload pressure in time when needed to ensure that the liquid supply pressure is maintained within the set control range, thereby guaranteeing the safe and stable operation of the equipment.

[0003] The design of the unloading valve is usually composed of three main parts: a valve body, a valve core and a driving unit. The valve core is located inside the valve body and interacts with the valve body through sliding fit to realize accurate control. The driving unit is responsible for controlling the movement of the valve core in the valve body, thereby controlling the on-off state of the unloading valve and ensuring the stable supply of emulsion.

[0004] In order to gradually reduce the pressure of the unloading valve, the existing unloading valve is generally connected in parallel with multiple unloading main valves, and each unloading main valve is adapted with a one-way valve. When unloading pressure, the emulsion automatically selects the loop with the smallest resistance to return to the emulsion tank.

[0005] However, during long-term use, the valve core of the one-way valve may fail to seal due to valve core wear, spring failure, dirt accumulation or improper operation, and the valve core needs to be replaced. When replacing the valve core, the valve core needs to be recalibrated, which has the disadvantage of inconvenient replacement. INVENTION CONTENTS

[0006] In order to maintain the one-way valve, the application provides a hierarchical flow control unloading emulsion pump.

[0007] The hierarchical flow control unloading emulsion pump provided by the application adopts the following technical scheme:

[0008] A hierarchical flow control unloading emulsion pump, comprising an emulsion pump body and an unloading valve, the unloading valve comprising a pilot valve, a one-way valve and an unloading main valve, a placing groove is formed on the chamber wall of the one-way valve, a control valve is inserted and sealed in the placing groove in plug-in cooperation, the control valve comprising a housing and a valve core, wherein:

[0009] A liquid inlet and a liquid outlet are formed on the housing, the liquid inlet of the housing is in communication with the liquid inlet of the one-way valve, and the liquid outlet of the housing is in communication with the liquid outlet of the one-way valve;

[0010] The shell is inserted into the placing groove, and the shell seals the gap between the shell and the inner wall of the placing groove through a sealing unit, and the shell is fixed in the placing groove through a locking unit.

[0011] The valve core is arranged in the shell to control the opening and closing of the liquid inlet and the liquid outlet of the shell.

[0012] Optionally, a first sealing groove is arranged on the inner wall of the placing groove in a circumferential direction, the first sealing groove is provided with two, the liquid inlet and the liquid outlet of the shell are located between the two first sealing grooves, two second sealing grooves adapted to the first sealing grooves are arranged on the outer circumferential surface of the shell, and the sealing unit is arranged between the first sealing groove and the second sealing groove.

[0013] Optionally, the sealing unit comprises an annular sealing hose, wherein:

[0014] The annular sealing hose is provided with two, the annular sealing hose is adapted to the first sealing groove, the annular sealing hose is sleeved on the second sealing groove, and the annular sealing hose is inserted into the first sealing groove.

[0015] The annular sealing hose is provided with two, the annular sealing hose is adapted to the first sealing groove, the annular sealing hose is sleeved on the second sealing groove, and the annular sealing hose is inserted into the first sealing groove.

[0016] Optionally, the sealing unit further comprises a T-shaped sealing pipe and a connecting pipe, wherein:

[0017] The T-shaped sealing pipe comprises a first pipe and a second pipe perpendicular to each other, and the two annular sealing hoses are communicated through the first pipe;

[0018] The liquid outlet of the connecting pipe is communicated with the second pipe, and the liquid outlet of the connecting pipe is communicated with the liquid inlet of the one-way valve.

[0019] Optionally, a positioning groove is arranged on the shell, and the first pipe is arranged in the positioning groove.

[0020] Optionally, the locking unit comprises a locking frame and a locking nut, wherein:

[0021] The locking frame is provided with two, the two locking frames are both in sliding fit with the shell, and the locking frame is provided with a locking groove on the side close to the locking groove, the locking frame is provided with a locking arc plate coaxial with the locking groove at the position close to the locking groove, the two locking arc plates are coaxial, and the two locking arc plates clamp the second pipe;

[0022] The locking nut is sleeved on the outer circumferential wall of the two locking arc plates, and the locking nut is in threaded connection with the locking arc plate.

[0023] Optionally, the connecting pipe is located between the two locking arc plates at the interface with the second pipeline.

[0024] Optionally, the locking frame comprises a clamping plate and a sliding block, wherein:

[0025] The clamping plate is in contact with the outer wall of the shell;

[0026] A plurality of sliding blocks are arranged on the clamping plate, a sliding groove adapted to the sliding blocks is arranged on the valve body of the one-way valve, and the sliding blocks and the sliding groove are in sliding fit.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. When the one-way valve needs to be repaired, the emulsion pump body is closed to reduce the pressure of the system, the locking nut is rotated to make the two clamping plates move away from each other, and then the operator can pull out the shell through the T-shaped sealing pipe and the annular sealing hose, thereby improving the convenience of pulling out the shell.

[0029] When the shell is inserted, the annular sealing hose is sleeved on the shell, the shell is pushed into the placing groove, the clamping plate is slid to further position the shell, then the second pipeline and the connecting pipe are connected, and the two locking arc plates are locked by the locking nut, and after the emulsion pump body is started, the high-pressure liquid is introduced into the annular sealing hose from the connecting pipe, thereby realizing the sealing of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0031] Figure 2 is a schematic diagram of the relative positions of the placing groove and the first sealing groove in the embodiment of the present application.

[0032] Figure 3 is a schematic diagram of the shell structure in the embodiment of the present application.

[0033] Figure 4 is a schematic diagram of the sealing unit structure in the embodiment of the present application.

[0034] Figure 5 is a schematic diagram of the locking unit structure in the embodiment of the present application.

[0035] Explanation of reference signs:

[0036] 1, shell; 11, second sealing groove; 12, positioning groove; 2, placing groove; 21, first sealing groove; 3, sealing unit; 31, annular sealing hose; 32, T-shaped sealing pipe; 321, first pipe; 322, second pipe; 33, connecting pipe; 4, locking unit; 41, locking frame; 411, clamping plate; 412, sliding block; 413, locking arc plate; 42, locking nut. DETAILED DESCRIPTION

[0037] The application will be further described below with reference to the accompanying drawings. Figures 1-5 The application will be further described below with reference to the accompanying drawings.

[0038] The application discloses a hierarchical flow control unloading emulsion pump.

[0039] A hierarchical flow control unloading emulsion pump comprises an emulsion pump body and an unloading valve, and the unloading valve comprises a pilot valve, a check valve and an unloading main valve. A placing groove 2 is formed in the chamber wall of the check valve, and a control valve is inserted into the placing groove 2 in plug-in sealing fit.

[0040] When the valve core of the check valve is replaced, the control valve is pulled out of the placing groove 2, and a new control valve is replaced, and the new control valve is pre-adjusted to working pressure, so that the convenience of repairing the check valve is improved.

[0041] The control valve comprises a shell 1 and a valve core. The shell 1 is provided with an inlet and an outlet, the inlet of the shell 1 is communicated with the inlet of the check valve, and the outlet of the shell 1 is communicated with the outlet of the check valve. The valve core is arranged in the shell 1 and is used for controlling the on-off of the inlet and the outlet of the shell 1.

[0042] After the shell 1 is placed in the placing groove 2, the gap between the shell 1 and the groove wall of the placing groove 2 is sealed by the sealing unit 3, and the shell 1 is fixed in the placing groove 2 by the locking unit 4.

[0043] The inner wall of the placing groove 2 is circumferentially provided with a first sealing groove 21, and the placing groove 2 is provided with two first sealing grooves 21, the inlet and the outlet of the shell 1 are located between the two first sealing grooves 21, and the outer circumferential surface of the shell 1 is provided with two second sealing grooves 11 matched with the first sealing grooves 21, and the sealing unit 3 is arranged between the first sealing groove 21 and the second sealing groove 11.

[0044] The sealing unit 3 comprises an annular sealing hose 31, a T-shaped sealing pipe 32 and a connecting pipe 33.

[0045] Two annular sealing hoses 31 are provided, and the annular sealing hoses 31 are matched with the first sealing groove 21, the annular sealing hoses 31 are sleeved on the second sealing groove 11, and the annular sealing hoses 31 are inserted and matched with the first sealing groove 21. The high-pressure medium is introduced into the annular sealing hose 31 to make the wall of the annular sealing hose 31 tightly contact the groove wall of the first sealing groove 21 and the second sealing groove 11.

[0046] The T-shaped sealing pipe 32 comprises a first pipeline 321 and a second pipeline 322 which are perpendicular to each other, and the two annular sealing hoses 31 are communicated through the first pipeline 321.

[0047] The liquid outlet of the connecting pipe 33 is communicated with the second pipeline 322, and the liquid outlet of the connecting pipe 33 is communicated with the liquid inlet of the one-way valve. In the embodiment of the application, the high-pressure liquid at the liquid inlet of the one-way valve is transported into the two annular sealing hoses 31 through the connecting pipe 33 and the T-shaped sealing pipe 32, so that the wall of the annular sealing hose 31 tightly contacts the groove wall of the first sealing groove 21 and the second sealing groove 11, thereby realizing the sealing effect. In order to realize the effect that the wall of the annular sealing hose 31 tightly contacts the groove wall of the first sealing groove 21 and the second sealing groove 11, a high-pressure gas can also be introduced into the annular sealing hose 31.

[0048] In order to further improve the stability of the T-shaped sealing pipe 32, the positioning groove 12 is arranged on the shell 1, and the first pipeline 321 is arranged in the positioning groove 12.

[0049] The locking unit 4 comprises a locking frame 41 and a locking nut 42.

[0050] The locking frame 41 comprises two locking frames 41, and the two locking frames 41 are slidably matched with the shell 1. The two locking frames 41 are provided with locking grooves on the sides close to each other, and the locking frames 41 are provided with locking arc plates 413 coaxial with the locking grooves at positions close to the locking grooves. The two locking arc plates 413 are coaxial, and the two locking arc plates 413 clamp the second pipeline 322.

[0051] The locking nut 42 is sleeved on the outer circumferential wall of the two locking arc plates 413, and the locking nut 42 is threadedly connected with the locking arc plates 413.

[0052] When the shell 1 needs to be locked, the locking frame 41 is slid to clamp the second pipeline 322 of the T-shaped sealing pipe 32 by the locking arc plates 413 on the two locking frames 41, and at the same time, the locking frame 41 is in contact with the shell 1, and the shell 1 is limited by the locking frame 41, thereby completing the installation of the shell 1.

[0053] In order to improve the stability of the connection between the connecting pipe 33 and the second pipeline 322, the interface between the connecting pipe 33 and the second pipeline 322 is located between the two locking arc plates 413, and the two locking arc plates 413 clamp the connecting pipe 33 and the second pipeline 322.

[0054] The locking frame 41 comprises a clamping plate 411 and sliding blocks 412.

[0055] The clamping plate 411 is in contact with the outer wall of the shell 1. The sliding blocks 412 are provided in plurality, and the plurality of sliding blocks 412 are arranged on the clamping plate 411. The valve body of the one-way valve is provided with sliding grooves matched with the sliding blocks 412, and the sliding blocks 412 are in sliding fit with the sliding grooves. The locking arc plates 413 are located on the clamping plate 411. In the embodiment, the sliding blocks 412 are provided in two, and the two sliding blocks 412 are perpendicular to the clamping plate 411.

[0056] At the same time, in order to facilitate the pushing of the shell 1 into the placing groove 2, the edges of the shell 1 are provided in arc surface, and the clamping plate 411 is pushed to move the upper shell 1 through the arc surface on the shell 1 during the moving process.

[0057] The implementation principle of the embodiment of the application is that when the one-way valve needs to be repaired, the emulsion pump body is closed to reduce the pressure of the system, the locking nut 42 is rotated to make the two clamping plates 411 move away from each other, then the operator can pull out the shell 1 through the T-shaped sealing pipe 32 and the annular sealing hose 31, so as to improve the convenience of pulling out the shell 1.

[0058] When the shell 1 is inserted, the annular sealing hose 31 is sleeved on the shell 1, the shell 1 is pushed into the placing groove 2, the clamping plate 411 is slid to further position the shell 1, then the second pipeline 322 and the connecting pipe 33 are communicated, and the two locking arc plates 413 are locked through the locking nut 42, so as to realize the sealing of the shell 1 after the emulsion pump body is started.

[0059] The above are the preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A step flow control unloading emulsion pump comprising an emulsion pump body and an unloading valve, the unloading valve comprising a pilot valve, a check valve and an unloading main valve, characterized in that: The chamber wall of the one-way valve is provided with a placing groove, a control valve is inserted and sealed in the placing groove in plug-in cooperation, the control valve comprises a shell and a valve core, wherein: The shell is provided with an inlet and an outlet, the inlet of the shell is communicated with the inlet of the one-way valve, and the outlet of the shell is communicated with the outlet of the one-way valve; The shell is in plug-in cooperation with the placing groove, and the shell seals the gap between the shell and the inner wall of the placing groove through a sealing unit, and the shell is fixed in the placing groove through a locking unit; The valve core is arranged in the shell for controlling the on-off of the inlet and outlet of the shell.

2. A step flow control unloading emulsion pump according to claim 1, characterized in that: The inner wall of the placing groove is circumferentially provided with a first sealing groove, the first sealing groove is provided with two, the inlet and outlet of the shell are located between the two first sealing grooves, the outer circumferential surface of the shell is provided with two second sealing grooves matched with the first sealing grooves, and the sealing unit is arranged between the first sealing groove and the second sealing groove.

3. A step flow control unloading emulsion pump according to claim 2, characterized in that: The sealing unit comprises an annular sealing hose, wherein: The annular sealing hose is provided with two, the annular sealing hose is matched with the first sealing groove, the annular sealing hose is sleeved on the second sealing groove, and the annular sealing hose is in plug-in cooperation with the first sealing groove; The annular sealing hose is communicated with a high-pressure medium for making the pipe wall of the annular sealing hose tightly contact the groove wall of the first sealing groove and the second sealing groove.

4. A step flow control unloading emulsion pump according to claim 3, characterized in that: The sealing unit further comprises a T-shaped sealing pipe and a connecting pipe, wherein: The T-shaped sealing pipe comprises a first pipe and a second pipe perpendicular to each other, and the two annular sealing hoses are communicated through the first pipe; The outlet of the connecting pipe is communicated with the second pipe, and the outlet of the connecting pipe is communicated with the inlet of the one-way valve.

5. A step flow controlled unloading emulsion pump according to claim 4, characterized in that: The shell is provided with a positioning groove, and the first pipe is arranged in the positioning groove.

6. A step flow control unloading emulsion pump according to claim 4, characterized in that: The locking unit comprises a locking frame and a locking nut, wherein: The locking frame is provided with two, the two locking frames are in sliding cooperation with the shell, the side of the two locking frames close to each other is provided with a locking groove, the position of the locking frame close to the locking groove is provided with a locking arc plate coaxial with the locking groove, the two locking arc plates are coaxial, and the two locking arc plates clamp the second pipe; The locking nut is sleeved on the outer circumferential wall of the two locking arc plates, and the locking nut is in threaded connection with the locking arc plate.

7. A step flow control unloading emulsion pump according to claim 6, characterized in that: The interface between the connecting pipe and the second pipe is located between the two locking arc plates.

8. A step flow control unloading emulsion pump according to claim 6, characterized in that: The locking frame comprises a clamping plate and a sliding block, wherein: The clamping plate is in contact with the outer wall of the shell; A plurality of sliding blocks are arranged on the clamping plate, the valve body of the one-way valve is provided with a sliding groove matched with the sliding block, and the sliding block is in sliding cooperation with the sliding groove.

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