Net winding combination valve of bundling machine
By designing a baler net-winding combination valve with integrated multiple functions, the oil seepage and pressure loss caused by high pressure, high temperature and vibration of hydraulic control systems in the prior art is solved, and a more efficient and reliable winding and packaging compression function is achieved.
Patent Information
- Application Number
- CN202422404639.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In existing packaging compression equipment, hydraulically controlled winding and packaging compression systems are prone to oil seepage problems due to high pressure, high temperature and long-term vibration. Moreover, since the oil channel is designed for right-angle communication, it leads to large pressure losses, insufficient equipment performance and complex maintenance.
A baler net-wrap combined valve is designed, integrating solenoid valve, pressure compensation valve, throttle valve, solenoid ball valve, relief valve and superimposed hydraulic control check valve, and adopts an integrated casting valve body to optimize the oil channel design to reduce pressure loss.
It realizes the advantages of compact structure, light weight and small pressure loss, optimizes space utilization and system response speed, reduces potential leakage points, simplifies the pipeline layout and assembly process, and reduces the assembly complexity and time cost of the whole machine.
Smart Images
Figure CN223019078U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of packing and compressing equipment, and particularly relates to a net winding combined valve for a baler. Background Art
[0002] A straw baler is a packing and compressing equipment, which compresses straws with light quality and large stacking space together for convenient transportation. Among them, there is a way of traction type crushing and baling, which mainly includes a winding and cutting function module and a packing and compressing function module. The product of the utility model is designed for the function of the winding and cutting function module. At present, this action is generally controlled by hydraulic pressure. The conventional method is to integrate function valves such as a reversing valve, a check valve, and a relief valve onto an integrated block, and connect and control the actions of various oil cylinders through various joints and pipelines to complete the winding and packing and compressing work. Such a structure may leak oil when the joint surface between the hydraulic valve and the valve block is under high pressure and high temperature during operation and after long-term vibration. In addition, since the oil channels inside the integrated block are all communicated at right angles, the pressure loss of the entire system is relatively large, resulting in deficiencies in the performance of the entire equipment and troublesome maintenance. Content of the Utility Model
[0003] To solve the problems existing in the prior art, the utility model provides a tying machine net winding combined valve, which includes: a first solenoid valve and a second solenoid valve arranged and installed on a combined valve body. The combined valve body is provided with a P port, a T port and an external working oil port, and the external working oil port is communicated with each actuator. It is characterized in that the combined valve body is a casting valve body integrally formed by casting. The casting valve body includes a front part of the valve body and a rear part of the valve body protruding backward from the front part of the valve body. The front part of the valve body is provided with a first core hole and a second core hole for accommodating the first solenoid valve and the second solenoid valve in the up and down direction. The bottom of the second core hole on the front part of the valve body is further provided with a third core hole for accommodating a stacked pilot check valve. A pressure compensation valve, a throttle valve, an electromagnetic ball valve and a relief valve are arranged on the rear part of the valve body. The front of the rear part of the valve body is provided with a P port, the side is provided with a T port, the bottom is provided with a T1 port, and the top is provided with a B1 port; the top of the front part of the valve body is provided with an A1 port, and the bottom is provided with an A2 port and a B2 port. The P port is communicated with the second core hole through a main pressure oil hole (111) arranged in the rear part of the valve body. The second core hole is respectively communicated with the first core hole and the third core hole. The P port is conductively connected to the T port through the electromagnetic ball valve. The first solenoid valve is communicated with the A1 port through an oil passage arranged in the front part of the valve body. Different working oil ports of the first solenoid valve are respectively connected with the pressure compensation valve and the throttle valve through oil passages arranged in the rear part of the valve body. The working oil ports of the pressure compensation valve and the throttle valve are combined and communicated with the B1 port. An oil passage arranged in the front part of the valve body where the second solenoid valve is located is connected to a stacked pilot check valve, and the stacked pilot check valve is communicated with the A2 port and the B2 port; the second solenoid valve makes the P port communicate with the A2 port and the B2 port communicate with the T port, or the P port communicate with the B2 port and the A2 port communicate with the T port by commutation; a relief valve is further arranged between the P port and the T port.
[0004] A main oil return hole and a main pressure oil hole are cast and arranged in the rear part of the valve body. A first left T cavity, a first left working cavity, a first main pressure cavity, a first right working cavity and a first right T cavity are cast and arranged along the first core hole in the front part of the valve body. A second left T cavity, a second left working cavity, a second main pressure cavity, a second right working cavity and a second right T cavity are cast and arranged along the second core hole in the front part of the valve body. A third left first working cavity, a third left second working cavity, a third right first working cavity and a third right second working cavity are cast and arranged along the third core hole in the front part of the valve body. A first communication cavity is arranged between the first left T cavity and the second left T cavity, and a second communication cavity is arranged between the first right T cavity and the second right T cavity. The first communication cavity and the second communication cavity are jointly communicated with the main oil return hole. A third communication cavity is arranged between the first main pressure cavity and the second main pressure cavity, and the third communication cavity is communicated with the main pressure oil hole. The bottom hole of the P port is communicated with the main pressure oil hole, and the bottom hole of the T port is communicated with the main oil return hole.
[0005] The combined valve body is provided with process holes: an upper process hole, a left process hole, a right process hole, and a lower process hole; at the upper front end of the rear part of the valve body, a first jack and a second jack are arranged forward. The throttle valve is inserted into the first jack, and the pressure compensation valve is inserted into the second jack. A fourth communication cavity connecting the first jack and the first left working cavity is arranged at the front part of the valve body. A fifth communication cavity connecting the second jack and the first right working cavity is also arranged at the front part of the valve body. The upper process hole communicates with the second jack and the fifth communication cavity, and the bottom hole of the first jack communicates with the A1 port; the left process hole communicates with the first jack and the second jack, and the left process hole communicates with the B1 port; a sixth communication cavity connecting the second left working cavity and the third left second working cavity, and a seventh communication cavity connecting the second right working cavity and the third right second working cavity are also arranged at the front part of the valve body; at the bottom surface of the lower end of the rear part of the valve body, a third jack is arranged, and the electromagnetic ball valve is inserted into the third jack. The third jack communicates with the main pressure oil hole through the right process hole; a fourth jack is opened on the left side surface of the rear part of the valve body, and the overflow valve is inserted into the fourth jack. The bottom hole of the fourth jack communicates with the main pressure oil hole, and the lower process hole penetrates through the fourth jack to connect the main oil return hole with the T1 port; the third left first working cavity communicates with the B2 port, and the third right first working cavity communicates with the A2 port.
[0006] The first solenoid valve is a two-position four-way valve.
[0007] The second solenoid valve is a three-position four-way valve, and the middle position is of O function.
[0008] Compared with the prior art, the present utility model has the following characteristics and beneficial effects: The net winding combined valve of this baler integrates control valves and threaded cartridge valves with multiple functions such as solenoid valves, pressure compensation valves, throttle valves, electromagnetic ball valves, overflow valves, and stacked hydraulic check valves into a cast combined valve body, realizing the functions of winding and cutting and packing and compressing. This makes the product have the advantages of compact structure, light weight, short casting flow path, and small pressure loss. Such a design not only optimizes the space utilization, but also improves the response speed and reliability of the system, and reduces potential leakage points. The design of this integrated valve body also brings many advantages, simplifies the pipeline layout and assembly process, reduces the number of connectors and interfaces, thereby reducing the overall assembly complexity and time cost of the machine. It reduces material consumption, installation man-hours and maintenance costs, and the overall cost of the machine will be reduced, having greater market competitiveness.
[0009] In summary, the combined valve body omits the valve block, reduces the weight, and lowers the cost. The overall integrated combined valve block design realizes the re-layout of hydraulic valves in space, reduces the leakage points of the valve group, reduces the pressure loss of the valve group, shrinks the volume of the valve group, and greatly reduces the cost of the valve group. Description of the Drawings
[0010] Figure 1 Three-dimensional structure schematic diagram of the present utility model Figure 1;
[0011] Figure 2 Schematic diagram of the three-dimensional structure of the present utility model Figure 2 ;
[0012] Figure 3 Schematic diagram of the three-dimensional structure of the combined valve body of the present utility model Figure 1 ;
[0013] Figure 4 Schematic diagram of the three-dimensional structure of the combined valve body of the present utility model Figure 2 ;
[0014] Figure 5 Schematic diagram of the right direction of the combined valve body of the present utility model;
[0015] Figure 6 is Figure 5 Schematic diagram of the cross-section at A-A;
[0016] Figure 7 is Figure 5 Schematic diagram of the cross-section at B-B;
[0017] Figure 8 is Figure 5 Schematic diagram of the cross-section at C-C;
[0018] Figure 9 Schematic diagram of the main direction of the combined valve body of the present utility model;
[0019] Figure 10 is Figure 9 Schematic diagram of the cross-section at D-D;
[0020] Figure 11 is Figure 9 Schematic diagram of the cross-section at E-E;
[0021] Figure 12 is Figure 9 Schematic diagram of the cross-section at F-F;
[0022] Figure 13 Schematic diagram of the working principle of the present utility model.
[0023] In the figure: 2 - First solenoid valve; 3 - Second solenoid valve; 4 - Pressure compensation valve; 5 - Throttle valve; 6 - Electromagnetic ball valve; 7 - Relief valve; 8 - Stacked pilot check valve; 91 - Net winding motor; 92 - Net cutting oil cylinder; 10 - Front part of valve body; 101 - First core hole; 1010 - First left T cavity; 1011 - First left working cavity; 1012 - First main pressure cavity; 1013 - First right working cavity; 1014 - First right T cavity; 1015 - First communication cavity; 1016 - Second communication cavity; 1017 - Third communication cavity; 1018 - Fourth communication cavity; 1019 - Fifth communication cavity; 102 - Second core hole; 1020 - Second left T cavity; 1021 - Second left working cavity; 1022 - Second main pressure cavity; 1023 - Second right working cavity; 1024 - Second right T cavity; 1025 - Sixth communication cavity; 103 - Third core hole; 1030 - Third left first working cavity; 1031 - Third left second working cavity; 1032 - Third right first working cavity; 1033 - Third right second working cavity; 11 - Rear part of valve body; 110 - Main oil return hole; 111 - Main pressure oil hole; 1001 - Upper process hole; 1002 - Left process hole; 1003 - Right process hole; 1004 - Lower process hole; 104 - First jack; 105 - Second jack; 106 - Third jack; 107 - Fourth jack; 12 - First mounting hole; 13 - Second mounting hole; 14 - Third mounting hole. Detailed implementation mode
[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0025] As Figures 1-13As shown in the figure, a net - winding combination valve for a baler includes: a first solenoid valve 2 and a second solenoid valve 3 installed on a combination valve body. The first solenoid valve is a two - position four - way valve, and the second solenoid valve is a three - position four - way valve with a center position of O - type function. The combination valve body is provided with a P port, a T port, and an external working oil port. The external working oil port is connected to each actuator. The combination valve body is an integrally cast casting valve body, which includes a valve body front part 10 and a valve body rear part 11 protruding backward from the valve body front part. The valve body front part is provided with a first core hole 101 and a second core hole 102 for accommodating the first solenoid valve 2 and the second solenoid valve 3 in the up - down direction. At the bottom of the second core hole on the valve body front part, there is also a third core hole 103 for accommodating a stacked pilot - operated check valve 8. On the valve body rear part, there are a pressure - compensating valve 4, a throttle valve 5, an electromagnetic ball valve 6, and a relief valve 7. The front of the valve body rear part is provided with a P port, the side is provided with a T port, the bottom is provided with a T1 port, and the top is provided with a B1 port; the top of the valve body front part is provided with an A1 port, and the bottom is provided with an A2 port and a B2 port. The P port is connected to the second core hole 102 through a main pressure oil hole 111 arranged inside the valve body rear part. The second core hole 102 is respectively connected to the first core hole 101 and the third core hole 103. The P port is conductively connected to the T port through the electromagnetic ball valve 6. The first solenoid valve 2 is connected to the A1 port through an oil passage arranged inside the valve body front part 10. Different working oil ports of the first solenoid valve 2 are respectively connected to the pressure - compensating valve 4 and the throttle valve 5 through oil passages arranged inside the valve body rear part 11. The working oil ports of the pressure - compensating valve 4 and the throttle valve 5 are combined and then connected to the B1 port. The oil passage arranged inside the valve body front part 10 where the second solenoid valve 3 is located is connected to the stacked pilot - operated check valve 8, and the stacked pilot - operated check valve 8 is connected to the A2 port and the B2 port; the second solenoid valve 3 makes the P port communicate with the A2 port, the B2 port communicate with the T port, or the P port communicate with the B2 port, the A2 port communicate with the T port through commutation; there is also a relief valve 7 between the P port and the T port. As Figure 2 shown, on the outer end face of the valve body rear part, there are mounting holes one 12, mounting holes two 13, and a mounting hole 14 for the fixed installation of this casting valve body. As Figure 2 , 3 shown, the M port is the pressure - measuring port of the main pressure oil hole 111.
[0026] As Figures 5-8As shown in the figure, a main oil return hole 110 and a main pressure oil hole 111 are cast inside the rear part 11 of the valve body. Along the first core hole 101 in the front part 1 of the valve body, a first left T cavity 1010, a first left working cavity 1011, a first main pressure cavity 1012, a first right working cavity 1013, and a first right T cavity 1014 are cast. Along the second core hole 102 in the front part 1 of the valve body, a second left T cavity 1020, a second left working cavity 1021, a second main pressure cavity 1022, a second right working cavity 1023, and a second right T cavity 1024 are cast. Along the third core hole 103 in the front part 1 of the valve body, a third left first working cavity 1030, a third left second working cavity 1031, a third right first working cavity 1032, and a third right second working cavity 1033 are cast. A first communication cavity 1015 is arranged between the first left T cavity 1010 and the second left T cavity 1020. A second communication cavity 1016 is arranged between the first right T cavity 1014 and the second right T cavity 1024. The first communication cavity 1015 and the second communication cavity 1016 are jointly connected to the main oil return hole 110. A third communication cavity 1017 is arranged between the first main pressure cavity 1012 and the second main pressure cavity 1022. The third communication cavity 1017 is connected to the main pressure oil hole 111. The bottom hole of the P port is connected to the main pressure oil hole 111. The bottom hole of the T port is connected to the main oil return hole 110.
[0027] As Figures 1-4, as shown in FIGS. 9-12, the combined valve body is provided with process holes: upper process hole 1001, left process hole 1002, right process hole 1003, and lower process hole 1004; at the upper end of the rear part 11 of the valve body, a first jack 104 and a second jack 105 are arranged forward. The throttle valve 5 is inserted into the first jack 104, and the pressure compensation valve 4 is inserted into the second jack 105. A fourth communication cavity 1018 communicating the first jack 104 and the first left working cavity 1011 is provided in the front part 11 of the valve body. A fifth communication cavity 1019 communicating the second jack 105 and the first right working cavity 1013 is also provided in the front part 10 of the valve body. The upper process hole 1001 communicates the second jack 105 and the fifth communication cavity 1019. The bottom hole of the first jack 104 communicates with the A1 port; the left process hole 1002 communicates the first jack 104 and the second jack 105, and the left process hole 1002 communicates with the B1 port; a sixth communication cavity 1025 communicating the second left working cavity 1021 and the third left second working cavity 1031, and a seventh communication cavity 1026 communicating the second right working cavity 1023 and the third right second working cavity 1033 are also provided in the front part 10 of the valve body; a third jack 106 is provided on the bottom surface of the lower end of the rear part 11 of the valve body. The electromagnetic ball valve 6 is inserted into the third jack 106. The third jack 106 communicates with the main pressure oil hole 111 through the right process hole 1003; a fourth jack 107 is opened on the left side surface of the rear part 11 of the valve body. The overflow valve 7 is inserted into the fourth jack 107. The bottom hole of the fourth jack 107 communicates with the main pressure oil hole 111. The lower process hole 1004 penetrates through the fourth jack 107 to connect the main oil return hole 110 with the T1 port; the third left first working cavity 1030 communicates with the B2 port, and the third right first working cavity 1032 communicates with the A2 port.
[0028] As Figure 13 shown, the B1 port is connected to the net winding motor 91, and a throttle valve 5 is also provided between the first solenoid valve 2 and the pressure compensation valve 4 to control the speed of the net winding motor. The working principle of the net winding combined valve of the baler is as follows:
[0029] 1. In the standby state, the hydraulic oil enters from the P port and directly returns oil through the electromagnetic ball valve 6.
[0030] 2. When the YV1 and YV2 electromagnets are energized simultaneously, the hydraulic oil is cut off at the electromagnetic ball valve 6 and enters the pressure compensation valve 4 through the first solenoid valve 2, and supplies oil to the net winding motor 91 at the flow rate set by this valve to ensure the uniform rotation of the net winding motor 91. When the speed of the net winding motor 91 needs to be adjusted, it can be adjusted through the stop valve 5.
[0031] 3. When the YV1 and YV2 are de-energized simultaneously, the net winding motor 91 stops working, and the hydraulic oil directly returns to the fuel tank through the electromagnetic ball valve 6.
[0032] 4. YV1 and YV3 are energized simultaneously. The hydraulic oil enters the rodless cavity of the net cutting cylinder through the second solenoid valve 3 and the stacked pilot-operated check valve 8, pushing the net cutting knife out to cut the entangled net. The hydraulic oil in the rod cavity returns to the fuel tank through the stacked pilot-operated check valve 8 opened in the reverse direction.
[0033] 5. YV1 and YV4 are energized simultaneously. The hydraulic oil enters the rod cavity of the net cutting cylinder through the second solenoid valve 3 and the stacked pilot-operated check valve 8, pushing the net cutting knife back. The hydraulic oil in the rodless cavity returns to the fuel tank through the stacked pilot-operated check valve 8 opened in the reverse direction.
[0034] 6. YV1 and YV4 are de-energized simultaneously. The net cutting cylinder returns to the initial position, and the hydraulic oil returns directly to the fuel tank through the electromagnetic ball valve 6.
[0035] The relief valve 7 functions as a safety valve throughout the working process.
[0036] The stacked pilot-operated check valve 8 ensures that the net cutting cylinder does not move around when in the initial position.
[0037] The above is a working cycle of this combination valve.
Claims
1. A baler net wrapping combination valve, comprising: A first solenoid valve (2) and a second solenoid valve (3) are provided mounted on a combined valve body, a P port, a T port and an external working oil port are provided on the combined valve body, the external working oil port is communicated with each actuator, and the combined valve body is characterized in that the combined valve body is a cast valve body formed in one piece, the cast valve body comprises a valve body front portion (10) and a valve body rear portion (11) protruding rearward from the valve body front portion, the valve body front portion is provided with a first core portion for accommodating the first solenoid valve (2) and the second solenoid valve (3) in the up-down direction A third core hole (103) for accommodating a stacked hydraulically controlled one-way valve (8) is provided at the bottom of the second core hole on the front of the valve body. A pressure compensation valve (4), a throttle valve (5), an electromagnetic ball valve (6) and a relief valve (7) are provided on the rear of the valve body. A P port is provided in the front of the rear of the valve body, a T port is provided on the side, a T1 port is provided at the bottom, and a B1 port is provided at the top. An A1 port is provided at the top of the front of the valve body, and A2 ports and B2 ports are provided at the bottom. The P port The main pressure oil hole (111) provided in the rear part of the valve body is connected to the first core hole (101) and the second core hole (102); the second core hole (102) is connected to the third core hole (103); the P port is connected to the T port via the electromagnetic ball valve (6); the first electromagnetic valve (2) is connected to the A1 port via an oil passage provided in the front part (10) of the valve body; different working oil ports of the first electromagnetic valve (2) are respectively connected to the pressure compensation valve (4), the throttle valve (4) and the like via oil passages provided in the rear part (11) of the valve body. (5), the working oil ports of the pressure compensation valve (4) and the throttle valve (5) are combined and then connected to the B1 port, the oil passage arranged in the front part (10) of the valve body where the second solenoid valve (3) is located is connected to the stacked hydraulically controlled non-return valve (8), and the stacked hydraulically controlled non-return valve (8) is connected to the A2 port and the B2 port; the second solenoid valve (3) is switched so that the P port is connected to the A2 port, the B2 port is connected to the T port, or the P port is connected to the B2 port, the A2 port is connected to the T port; and an overflow valve (7) is also arranged between the P port and the T port.
2. A baler net wrapping combined valve according to claim 1, characterized in that: A main oil return hole (110) and a main pressure oil hole (111) are cast in the rear portion (11) of the valve body; a first left T chamber (1010), a first left working chamber (1011), a first main pressure chamber (1012), a first right working chamber (1013), and a first right T chamber (1014) are cast in the first core hole (101) of the front portion (1) of the valve body; a second left T chamber (1020), a second left working chamber (1021), a second main pressure chamber (1022), a second right working chamber (1023), and a second right T chamber (1024) are cast in the second core hole (102) of the front portion (1) of the valve body; and a third left first working chamber (1030), a third left second working chamber (1031), and a third left third working chamber (1032) are cast in the third core hole (103) of the front portion (1) of the valve body. 1031), a third right first working chamber (1032), a third right second working chamber (1033), a first connecting chamber (1015) is arranged between the first left T chamber (1010) and the second left T chamber (1020), a second connecting chamber (1016) is arranged between the first right T chamber (1014) and the second right T chamber (1024), the first connecting chamber (1015) and the second connecting chamber (1016) are connected to the main oil return hole (110), a third connecting chamber (1017) is arranged between the first main pressure chamber (1012) and the second main pressure chamber (1022), the third connecting chamber (1017) is connected to the main pressure oil hole (111), the bottom hole of the P port is connected to the main pressure oil hole (111), and the bottom hole of the T port is connected to the main oil return hole (110).
3. A baler net wrapping combined valve according to claim 2, characterized in that: The combined valve body is provided with process holes: an upper process hole (1001), a left process hole (1002), a right process hole (1003), and a lower process hole (1004); a first plug hole (104) and a second plug hole (105) are provided forwardly at the upper end of the rear portion (11) of the valve body; the throttle valve (5) is inserted into the first plug hole (104), and the pressure compensation valve (4) is inserted into the second plug hole (105); the front portion (10) of the valve body is provided with a connection between the first plug hole (104) and the first left working chamber (105); The valve body (1001) is provided with a fourth connecting cavity (1018) connected to the second plug hole (105) and the first right working cavity (1013); the front portion (10) of the valve body is further provided with a fifth connecting cavity (1019) connected to the second plug hole (105) and the first right working cavity (1013); the upper process hole (1001) is connected to the second plug hole (105) and the fifth connecting cavity (1019); the bottom hole of the first plug hole (104) is connected to the A1 port; the left process hole (1002) is connected to the first plug hole (104) and the second plug hole (105); the left process hole (1002) is connected to the B1 port The front portion (10) of the valve body is further provided with a sixth connecting chamber (1025) connecting the second left working chamber (1021) and the third left second working chamber (1031), and a seventh connecting chamber (1026) connecting the second right working chamber (1023) and the third right second working chamber (1033); the bottom surface of the lower end portion of the rear portion (11) of the valve body is provided with a third plug hole (106), the electromagnetic ball valve (6) is inserted into the third plug hole (106), and the third plug hole (106) is connected to the right process hole (1003). The fourth plug hole (107) is connected to the main pressure oil hole (111); the left side of the rear part (11) of the valve body is provided with a fourth plug hole (107); the overflow valve (7) is inserted into the fourth plug hole (107); the bottom hole of the fourth plug hole (107) is connected to the main pressure oil hole (111); the lower process hole (1004) passes through the fourth plug hole (107) so that the main oil return hole (110) is connected to the T1 port; the third left working chamber (1030) is connected to the B2 port, and the third right working chamber (1032) is connected to the A2 port.
4. A baler net wrapping combined valve according to claim 3, characterized in that: The first solenoid valve is a two-position four-way valve.
5. The baler net wrapping combined valve according to claim 3, characterized in that: The second solenoid valve is a three-position four-way valve, and the middle position is the O function.