A combination valve group

Abstract

The present application relates to a kind of combination valve groups. Including pressure control module, pressure control module includes: pressure control connecting body, overflow valve, check valve, pressure control connecting body is connected to set overflow valve, check valve, pressure control connecting body is six face square, pressure control connecting body outer facade is provided with pressure inlet P1, pressure inlet P2, main oil return T mouth, first working port W1, second working port W2, pressure control connecting body outer facade is also provided with overflow valve, overflow valve is inserted into the plug-in type and is inserted into the body of pressure control connecting body, check valve is inserted and set in pressure control connecting body, the bottom surface of pressure control connecting body is connecting installation surface, the top surface of pressure control connecting body is provided with the connecting plate hole in accordance with ISO4401 international standard, connecting plate hole is provided with connecting reversing valve, pressure control connecting body bottom is expanded and connected main control valve group, pressure inlet P1 is combined after being output with pressure inlet P2 after check valve, is connected two reversing valves respectively, and the outlet of two reversing valves is corresponding first working port W1, second working port W2 respectively.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hydraulic control device, and specifically relates to a combined valve group. BACKGROUND

[0002] In the field of industrial hydraulic control, a hydraulic oil path block is generally used as a connecting substrate, the substrate is connected with hydraulic valves with different logical functions, and the application of a hydraulic control circuit is realized through corresponding oil channels of the oil path block. The oil path block is designed and manufactured by customization, and the hydraulic valves are usually general elements, so the combination thereof is usually large and heavy. Moreover, the customized oil path block cannot be flexibly used in different hydraulic control circuit conditions, the cost of the customized oil path block is high, the design and processing period is long, and this is not conducive to efficient supply of market demand.

[0003] The hydraulic control valves of baling machines and foaming machines usually have different size series, and the corresponding hydraulic control circuit principles and flow rates are slightly different according to the size of the machine type. With the development of advanced hydraulic industry, the control requirements are also continuously improved, and the control valve group develops towards small size, compactness and high pressure. Meanwhile, there is a demand for flexible use, and the related control modules need to be flexibly used according to the size of the machine type. Moreover, it is necessary to reduce the processing cost and maintenance cost.

[0004] Therefore, a hydraulic control valve solving the above problems is needed. SUMMARY

[0005] The present application solves the problem of combination and collocation of valve groups of different machine types such as baling machines or foaming machines, and meets the characteristics of small size, compactness and high pressure of the valve group. A combined valve group is invented.

[0006] The present application adopts the following technical solutions:

[0007] A combination valve group, comprising a pressure control module, the pressure control module comprising: a pressure control connector, an overflow valve, a one-way valve, the pressure control connector connecting the overflow valve and the one-way valve, the pressure control connector being a six-surface cuboid, the outer surface of the pressure control connector being provided with a pressure inlet P1, a pressure inlet P2, a main oil return port T, a first working port W1, and a second working port W2, the outer surface of the pressure control connector corresponding to the pressure inlet P1 and the pressure inlet P2 being respectively provided with an overflow valve, the overflow valve being a plug-in type and being inserted into the pressure control connector, the one-way valve being inserted and arranged in the pressure control connector, the bottom surface of the pressure control connector being a connecting and mounting surface, the pressure control connector being provided with a first communication channel and an overflow valve socket channel which are cast and symmetrically distributed, the two overflow valve socket channels being symmetrically arranged and connected with the first communication channel, the top surface of the pressure control connector being provided with a connecting plate hole conforming to the ISO4401 international standard, the connecting plate hole being provided with a reversing valve, the bottom of the pressure control connector being extended to connect a main control valve group, the pressure inlet P1 being combined and outputted with the pressure inlet P2 after passing through the one-way valve, and being respectively connected with two reversing valves, the outlets of the two reversing valves respectively corresponding to the first working port W1 and the second working port W2.

[0008] The main control valve group comprises: a main reversing valve, a hydraulic control valve, and a sub-reversing valve, the main reversing valve being a six-surface cuboid, the upper surface and the lower surface being provided with connecting and mounting surfaces, the upper surface being provided with a Pa1 port and a Tb1 port, the Pa1 port being connected with a Pa port of the pressure control connector, and the Tb1 port being connected with a Tb port of the pressure control connector, the lower surface being provided with a B1 port and a C1 port, the main reversing valve being an electro-hydraulic pilot control type, a valve hole being arranged in the valve body of the main reversing valve, a valve core being arranged in the valve hole, end covers being arranged on the outer surface of the six-surface cuboid at both ends of the valve core, the other two outer surfaces of the main reversing valve being respectively provided with a three-position pilot reversing valve and a hydraulic control valve, the bottom of the main reversing valve being connected with a sub-reversing valve, the inlet of the hydraulic control valve being connected with the B1 port, the control port of the hydraulic control valve being connected with the C1 port, and the outlet of the hydraulic control valve being connected with a third working port W3.

[0009] The main reversing valve is a three-position four-way valve, and the middle position O is functional.

[0010] The hydraulic control valve is a plate valve, the third working port W3 being arranged on the outer end surface of the hydraulic control valve, and the external connection pipe direction of the third working port W3 being the same as that of the pressure inlet P1 and the pressure inlet P2.

[0011] The sub-reversing valve is provided with a valve body, a two-position pilot reversing valve, an action valve core, and a valve end cover, the valve body of the sub-reversing valve being provided with a mounting surface, the mounting surface being provided with a Pa2 port and a Tb2 port, the Pa2 port and the Tb2 port respectively corresponding to the B1 port and the C1 port, and the outer surface of the valve body being provided with a fourth working port W4 in the same direction as the third working port W3, the outlet of the sub-reversing valve being the fourth working port W4.

[0012] The upper and lower surfaces of the main reversing valve are provided with threaded holes for mounting and expansion connection.

[0013] The first working port W1 and the second working port W2 are respectively provided with a pressure sensor fixed to the pressure control connecting body.

[0014] The reversing valve is superposed with the one-way throttle valve.

[0015] The lower plane of the sub-reversing valve is further provided with a threaded hole for fixing a connecting base plate, and the lower plane of the sub-reversing valve is provided with an expanded connecting threaded counterbore for mounting the main reversing valve.

[0016] Compared with the prior art, the valve group is highly integrated, has a modular functional design, each module can match the flow and pressure according to the control loop requirements of the execution element, the combination of valves with different diameters, the connection mode and the reasonable distribution of the connection position, the external pipelines do not interfere with each other, the maintenance and disassembly are convenient, the space utilization rate is high, the internal hole flow channel design is accurately and reasonably connected, the distribution of the hole channel in the connecting body of each module is convenient for casting, the multi-output flow and pressure are further optimized and balanced, the system such as a packaging machine and a foaming machine can meet the high-pressure and large-flow logic control, each module can be customized and designed according to the pressure and flow of various machine types, and the combination is flexible.

[0017] The application realizes the ultra-high applicability of the control valve group, meets the building requirements of different systems, has less production preparation time, and should be widely used. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the schematic diagram of the application;

[0019] Figure 2 is the three-dimensional schematic diagram of the connection group of the application;

[0020] Figure 3 is the three-dimensional schematic diagram of the connection group of the application; Figure 2 is the three-dimensional schematic diagram of the connection group of the application;

[0021] Figure 4 is the forward schematic diagram of the combined valve group of the application;

[0022] Figure 5 is the left view of the combined valve group of the application;

[0023] Figure 6 is the three-dimensional schematic diagram of the connection group of the application; Figure 5 is the cross-sectional view at A-A of the application;

[0024] Figure 7 is the cross-sectional view at B-B of the application; Figure 5

[0025] Figure 8 is the cross-sectional view at C-C of the application; Figure 5

[0026] ​​Figure 9 is the oil channel connection diagram of the pressure control connector of the present application;

[0027] Figure 10 is the pressure control connector of the present application Figure 9 is a sectional view at E-E in the present application.

[0028] Wherein, 1-pressure control connector, 2-main reversing valve, 3-sub reversing valve, 4-pilot relief valve, 5-check valve, 6-reversing valve, 7-check throttle valve, 8-pilot operated valve, 101-first communication channel, 102-pilot relief valve socket channel, 103-check valve plug-in hole, 104-check connection channel, 201-three-position pilot operated reversing valve, 202-end cover, 203-valve core, 301-actuating valve core, 302-valve end cover, 303-two-position pilot operated reversing valve. DETAILED DESCRIPTION

[0029] As Figures 1-10 , a combined valve group, comprising: a pressure control module, an auxiliary control valve group, a main control valve group, wherein the pressure control module comprises: a pressure control connector 1, a pilot relief valve 4, a check valve 5, the auxiliary control valve group comprises: a reversing valve 6, a check throttle valve 7, the main control valve group comprises: a main reversing valve 2, a pilot operated valve 8, a sub reversing valve 3, the pressure control connector 1 is a six-plane square, the outer vertical surface of the pressure control connector 1 is provided with a pressure inlet P1, a pressure inlet P2, a main oil return T port, a first working port W1, a second working port W2, the outer vertical surface of the pressure control connector 1 is further provided with the pilot relief valve 4, the pilot relief valve 4 is plug-in type and is plugged into the pressure control connector 1, the pilot relief valve 4 is an electromagnetic pilot relief valve, as Figure 1 , Figure 8 shown, the pressure inlet P1 and the pressure inlet P2 are connected back to the main oil return T port through the pilot relief valve, the pressure control connector 1 is provided with symmetrically distributed first communication channels 101, pilot relief valve socket channels 102 and check connection channels 104, check valve plug-in holes 103, two pilot relief valve socket channels 102 are symmetrically arranged and connected to the first communication channels 101, as Figures 7-10 , the communication connection holes of the pilot relief valve socket channels 102 and the pressure inlet P1 and the pressure inlet P2 are cast into shape, the check connection channels 104 and the first communication channels 101 are also cast into shape, the bottom surface of the pressure control connector 1 is a connection mounting surface, the connection mounting surface is provided with a Pa port and a Tb port, and fixed screw holes are arranged above and below, the top surface of the pressure control connector 1 is provided with a connection plate hole conforming to the ISO4401 international standard, the connection plate hole is provided with a reversing valve 6, or is further provided with a check throttle valve 7 and a pilot operated check valve, further, the pressure control connector 1 is further provided with a check valve 5, the inlet and outlet of the check valve 5 are connected to the pressure inlet P1 and the pressure inlet P2 respectively, to realize high and low pressure switching and pressure supply isolation of the pressure inlet.

[0030] The pressure inlet P1 merges with the pressure inlet P2 after passing through the one-way valve 5 and is output, and the output is connected to two reversing valves 6, and the outlets of the two reversing valves 6 correspond to the first working port W1 and the second working port W2 respectively.

[0031] The pressure control module can be independently used to realize two-way pressure supply, a plurality of logical valves meeting any connection standard are arranged at the top, and the bottom of the pressure control connecting body 1 can be extendedly connected, and when extended, an external control module and / or a valve group, such as a main control valve group, is connected.

[0032] The main reversing valve 2 is a six-plane cube, the upper plane and the lower plane are provided with a connecting mounting surface, the upper plane is provided with a Pa1 port and a Tb1 port, the Pa1 port is connected to the Pa port of the pressure control connecting body 1, the Tb1 port is connected to the Tb port of the pressure control connecting body 1, and the lower plane is provided with a B1 port and a C1 port, the main reversing valve 2 is an electro-hydraulic pilot control type, a valve hole is arranged in the valve body of the main reversing valve 2, a valve core 203 is arranged in the valve hole, end covers 202 are arranged on the outer vertical surfaces of the six-plane cube at both ends of the valve core 203, three-position pilot reversing valves 201 and hydraulic control valves 8 are arranged on the other two outer vertical surfaces of the main reversing valve 2 respectively, an A1 port and a control K port are arranged on the outer vertical surface corresponding to the hydraulic control valve 8, the A1 port is in communication with the internal oil channel of the B1 port, and the C1 port is in communication with the internal oil channel of the control K port, the main reversing valve 2 is a three-position four-way valve, the middle position O functions, the valve core is reversed, the Pa1 port and the B1 port are communicated, the Tb1 port and the C1 port are communicated at the same time, the Pa1 port and the C1 port are communicated, the Tb1 port and the B1 port are communicated at the same time, and the reversing is realized by the pilot control valve core 203 through the three-position pilot reversing valve 201.

[0033] As Figure 8 , the hydraulic control valve 8 is a plate type valve, an oil inlet and a control oil port are arranged on the mounting surface of the hydraulic control valve 8, the oil inlet is connected to the A1 port in a one-to-one manner, the control oil port is connected to the control K port in a one-to-one manner, a third working port W3 is arranged on the outer end surface of the hydraulic control valve 8 which is parallel to the mounting surface, the outer connecting pipe direction of the third working port W3 is the same as that of the pressure inlet P1 and the pressure inlet P2, the adjacent valve group and the external connecting pipe are installed compactly and do not interfere with each other, a valve hole and a valve core are arranged in the body of the hydraulic control valve 8, a one-way valve assembly is arranged at one end of the valve core, and the other end is a valve core mounting channel, a screw plug is arranged at the channel port, the valve core is pushed to open and close the one-way valve assembly by the oil pressure of the control K port, and the upper and lower planes of the main reversing valve 2 are provided with threaded holes for installing the extension connection.

[0034] The main reversing valve 2 can be independently used to realize reversing control, a plurality of logical valves meeting any connection standard are arranged at the bottom, and the bottom surface of the main reversing valve 2 can be further extendedly connected, and when extended, an external control module and / or a valve group, such as a sub-reversing valve 3, is connected.

[0035] The sub-reversing valve 3 is provided with a valve body, a two-position pilot reversing valve 303, an action valve core 301 and a valve end cover 302. The valve body of the sub-reversing valve 3 is provided with a mounting surface. The mounting surface is provided with a Pa2 port and a Tb2 port. The Pa2 port and the Tb2 port are respectively connected to the B1 port and the C1 port. The two-position pilot reversing valve 303 controls the action valve core 301 to reverse, so that the fourth working port W4 is in communication with the Pa2 port or the Tb2 port. The fourth working port W4 is arranged on the same vertical surface of the valve body as the third working port W3. The fourth working port W4 is connected to the same pipe as the third working port W3. The lower surface of the sub-reversing valve 3 is provided with a threaded counterbore for mounting and expanding the connection with the main reversing valve 2. The lower surface of the sub-reversing valve 3 is also provided with a threaded hole for fixedly connecting the base plate.

[0036] The auxiliary control valve group further comprises a pressure sensor fixed to the pressure control connecting body 1. The pressure sensor is in communication with the first working port W1 and the second working port W2.

[0037] The working mode is as follows:

[0038] As shown in Figure 1 , the first working port W1 and the second working port W2 are respectively connected to the rodless cavity of the action cylinder. The third working port W3 and the fourth working port W4 are respectively connected to the rodless cavity and the rod cavity of the main cylinder. The pressure inlet P1 and the pressure inlet P2 are respectively connected to different pressures to form a high-low pressure system. The pressure inlet P1 and the pressure inlet P2 are simultaneously supplied with pressure. When the pressure inlet P2 is high pressure, the one-way valve 5 can be closed, the reversing valve 6 can be reversed to supply pressure or release pressure, and the first working port W1 and the second working port W2 can output one-way driving of the action cylinder. The main reversing valve 2 is reversed to switch the pressure supply to the third working port W3 and the fourth working port W4. The third working port W3 outputs pressure to drive the main cylinder to extend. The fourth working port W4 outputs pressure to drive the main cylinder to retract. The outlet of the hydraulic control valve 8 is connected to the pressure maintaining cavity to realize hydraulic control pressure maintaining. The fourth working port W4 is connected to the return circuit to set the sub-reversing valve 3 to independently control the opening and closing. The overflow valve 4 is used for safety unloading.

[0039] The combination connection is that the main reversing valve 2 is used as the connection main body, the pressure control module is connected and fixed through screws, and the sub-reversing valve 3 is connected and fixed through the screws below the sub-reversing valve 3.

[0040] According to the flow and pressure of different specifications of the action cylinder and the main cylinder, the pass diameter of the pressure control module, the auxiliary control valve group and the main control valve group is adapted and designed. The installation and connection modes between them are unchanged, which can be flexibly combined to meet different machine types and different working conditions.

Claims

1. A combination valve block comprising a pressure control module, the pressure control module comprising: The application relates to a pressure control connecting body (1), an overflow valve (4) and a one-way valve (5), wherein the pressure control connecting body (1) is connected with the overflow valve (4) and the one-way valve (5), characterized in that the pressure control connecting body (1) is a hexahedral body, the outer surface of the pressure control connecting body (1) is provided with a pressure inlet P1, a pressure inlet P2, a main oil return port T, a first working port W1 and a second working port W2, the pressure control connecting body (1) is provided with the overflow valve (4) corresponding to the pressure inlet P1 and the pressure inlet P2, the overflow valve (4) is inserted into the pressure control connecting body (1), the one-way valve (5) is inserted into the pressure control connecting body (1), the bottom surface of the pressure control connecting body (1) is a connecting and mounting surface, the pressure control connecting body (1) is provided with a first communication hole (101) and overflow valve socket hole (102) which are cast and symmetrically distributed, the two overflow valve socket hole (102) are symmetrically arranged and connected with the first communication hole (101), the top surface of the pressure control connecting body (1) is provided with a connecting plate hole conforming to the ISO4401 international standard, the connecting plate hole is provided with a reversing valve (6), the bottom of the pressure control connecting body (1) is extended to be connected with a main control valve group, the pressure inlet P1 is combined with the pressure inlet P2 after passing through the one-way valve (5) and is output, is connected with two reversing valves (6) respectively, the outlets of the two reversing valves (6) correspond to the first working port W1 and the second working port W2 respectively, the main control valve group comprises a main reversing valve (2), a hydraulic control valve (8) and a sub-reversing valve (3), the main reversing valve (2) is a hexahedral body, the upper surface and the lower surface are provided with connecting and mounting surfaces, the upper surface is provided with a Pa1 port and a Tb1 port, the Pa1 port is connected with a Pa port of the pressure control connecting body (1), the Tb1 port is connected with a Tb port of the pressure control connecting body (1), the lower surface is provided with a B1 port and a C1 port, the main reversing valve (2) is an electro-hydraulic pilot control type, a valve hole is arranged in the valve body of the main reversing valve (2), a valve core (203) is arranged in the valve hole, the outer surface of the hexahedral body at the two ends of the valve core (203) is provided with an end cover (202), the other two outer surfaces of the main reversing valve (2) are respectively provided with a three-position pilot reversing valve (201) and a hydraulic control valve (8), the bottom of the main reversing valve (2) is connected with a sub-reversing valve (3), the inlet of the hydraulic control valve (8) is connected with the B1 port, the control port of the hydraulic control valve (8) is connected with the C1 port, the outlet of the hydraulic control valve (8) is connected with a third working port W3, and the third working port W3 is arranged on the outer end surface of the hydraulic control valve (8).

2. A combination valve group according to claim 1, characterised in that: The main reversing valve (2) is a three-position four-way valve, and the middle position O is functional.

3. A combination valve group according to claim 2, wherein: The hydraulic control valve (8) is a plate valve, the third working port W3 is arranged on the outer end surface of the hydraulic control valve (8), and the external connection pipe direction of the third working port W3 is the same as that of the pressure inlet P1 and the pressure inlet P2.

4. A combination valve group according to claim 1, wherein: The sub-reversing valve (3) is provided with a valve body, a two-position pilot reversing valve (303), an action valve core (301) and a valve end cover (302), the valve body of the sub-reversing valve (3) is provided with a mounting surface, the mounting surface is provided with a Pa2 port and a Tb2 port, the Pa2 port and the Tb2 port are respectively connected with the B1 port and the C1 port, and the valve body outer surface in the same direction as the third working port W3 is provided with a fourth working port W4, and the outlet of the sub-reversing valve (3) is the fourth working port W4.

5. A combination valve group according to claim 4, wherein: The main reversing valve (2) is provided with an extended connecting threaded hole in the upper and lower planes.

6. A combination valve group according to claim 1, wherein: The first working port W1 and the second working port W2 are respectively provided with a pressure sensor fixed to the pressure control connecting body (1).

7. A combination valve group according to claim 1, wherein: The reversing valve (6) is provided with a one-way throttling valve (7).

8. A combination valve group according to claim 1, characterized in that: The lower plane of the sub-reversing valve (3) is further provided with a threaded hole for fixing a connecting base plate, and the lower plane of the sub-reversing valve (3) is provided with a threaded counterbore for installing an extended connection with the main reversing valve (2).

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