A compact servo electro-hydraulic actuator

Abstract

The present invention provides a compact servo electro-hydraulic actuator, comprising a hydraulic cylinder, one side of the hydraulic cylinder is equipped with an integrated valve group, the other side of the hydraulic cylinder is equipped with a bidirectional hydraulic pump, the bidirectional hydraulic pump is transmission-connected to a servo motor, the bidirectional hydraulic pump is connected to the integrated valve group through a pump connecting pipe, and the hydraulic cylinder is connected to the integrated valve group; the compact servo electro-hydraulic actuator does not require an additional pump station, has a small and compact structure, can realize a telescopic function to meet usage requirements, and is convenient and quick to install and maintain; it is controlled by connecting the integrated valve group with other components, thereby reducing the number of pipes exposed to the outside and making it less likely to produce oil leakage points.

Description

Technical Field

[0001] The invention belongs to the technical field of actuators, and in particular relates to a compact servo electro-hydraulic actuator. Background Art

[0002] The actuator is a combination of an actuator and a control valve in an automatic control system.

[0003] In the prior art, for example, Chinese utility model patent document with publication number CN210240145U discloses a hydraulic system and a mechanical arm of a linear electro-hydraulic actuator. The hydraulic system includes a two-way hydraulic pump, a first hydraulically controlled one-way valve, a second hydraulically controlled one-way valve, a third hydraulically controlled one-way valve, a first one-way valve, a second one-way valve, an oil replenishment accumulator and a hydraulic cylinder. The first oil port of the two-way hydraulic pump is connected to the oil inlet of the first hydraulically controlled one-way valve, the oil outlet of the first hydraulically controlled one-way valve is connected to the rodless chamber of the hydraulic cylinder, the rod chamber of the hydraulic cylinder is connected to the oil outlet of the second hydraulically controlled one-way valve, the oil inlet of the second hydraulically controlled one-way valve is connected to the second oil port of the two-way hydraulic pump, the oil inlet of the third hydraulically controlled one-way valve is connected to the oil replenishment accumulator, the oil outlet of the third hydraulically controlled one-way valve is connected to the oil inlet of the first one-way valve, and the control oil port of the third hydraulically controlled one-way valve is connected to the oil inlet of the second hydraulically controlled one-way valve. It does not require a larger oil tank, and the robotic arm does not need to be configured with an independent hydraulic power station, which is beneficial to reducing the volume of the hydraulic system of the robotic arm.

[0004] Although the above-mentioned prior art does not require a hydraulic power station and is small in size, it does not disclose the specific structure of the electro-hydraulic actuator. If the hydraulic pipeline is directly exposed to the outside, oil leakage points are likely to occur during use, and the subsequent maintenance workload is large.

[0005] Therefore, it is necessary to design a compact servo electro-hydraulic actuator with a small and compact structure and not prone to oil leakage to solve the current technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a compact servo electro-hydraulic actuator with a small and compact structure and less prone to oil leakage.

[0007] The technical solution of the present invention is: a compact servo electro-hydraulic actuator, comprising a hydraulic cylinder, one side of the hydraulic cylinder is equipped with an integrated valve group, the other side of the hydraulic cylinder is equipped with a bidirectional hydraulic pump, the bidirectional hydraulic pump is transmission-connected to a servo motor, the bidirectional hydraulic pump is connected to the integrated valve group through a pump connecting pipe, and the hydraulic cylinder is connected to the integrated valve group.

[0008] The hydraulic cylinder comprises a front cylinder body and a rear cylinder body, the front cylinder body being coaxially connected to the rear cylinder body, a front piston being mounted inside the front cylinder body; a rear rod body being connected to the side of the front piston close to the rear cylinder body, a rear piston being mounted on the rear rod body, and the other side of the front piston being connected to the front rod body; a cavity close to the front cylinder body is separated inside the rear cylinder body by the rear piston as cavity A1, a cavity close to the rear cylinder body is separated inside the front cylinder body by the front piston as cavity A2, and the cavity on the other side is cavity A3.

[0009] The integrated valve group comprises: a valve group body, the valve group body has port A, port B, port A1, port A2 and port A3, the port A and port B are connected to the two-way hydraulic pump through a pump connecting pipe, the port A1 is connected to the A1 chamber, the port A2 is connected to the A2 chamber, and the port A3 is connected to the A3 chamber; a first one-way valve, the oil outlet of the first one-way valve is connected to the port A, and the oil inlet is connected to the A3 port through a fifth overflow valve; a second one-way valve, the oil outlet of the second one-way valve is connected to the port B, and the oil inlet is connected to the oil inlet of the first one-way valve; a third one-way valve, the oil inlet of the third one-way valve is connected to the A2 port, the oil outlet is connected to the port A, the port A2 and the port A3 respectively, and a sixth reversing valve is connected between the oil outlet of the third one-way valve and the A3 port; a fourth one-way valve, the oil outlet of the fourth one-way valve is connected to the A3 port, and the oil inlet is connected to the inlet of the third one-way valve. a first relief valve, the oil inlet of the first relief valve is connected to the A port, and the oil outlet is connected to the oil outlet of the first check valve; a second relief valve, the oil inlet of the second relief valve is connected to the B port, and the oil outlet is connected to the oil outlet of the first relief valve; a third relief valve, the oil inlet of the third relief valve is connected to the A2 port, and the oil outlet is connected to the oil inlet of the third check valve; a fourth relief valve, the oil outlet of the fourth relief valve is connected to the A3 port through the fourth reversing valve, and the oil inlet is connected to two branches, one branch is connected to the A1 port through the pressure compensation flow control valve, and the other branch is connected to the B port through the fifth reversing valve and the third reversing valve in sequence; a first reversing valve, the oil inlet of the first reversing valve is connected to the A2 port, and the oil outlet is connected to the A port; a second reversing valve, the oil inlet of the second reversing valve is connected to the A3 port, and the oil inlet is connected to the B port.

[0010] The valve group body also has a filter, the oil inlet of the filter is connected to the bidirectional hydraulic pump, and the oil outlet is connected to the oil inlet of the first one-way valve.

[0011] The valve group body has an accumulator and an SP port connected to the accumulator, and the SP port is connected to the oil inlet of the first one-way valve.

[0012] The accumulator is pre-charged with gas pressure.

[0013] The valve group body has a first pressure sensor and an SP3 port connected to the first pressure sensor, and the SP3 port is connected to the oil inlet of the first one-way valve; the valve group body has a second pressure sensor and an SP2 port connected to the second pressure sensor, and the SP2 port is connected to the A1 port; the valve group body has a third pressure sensor and an SP1 port connected to the third pressure sensor, and the SP1 port is connected to the A2 port.

[0014] The first reversing valve, the second reversing valve, the third reversing valve and the fourth reversing valve are two-position three-way electromagnetic reversing valves; the fifth reversing valve is a two-position connecting stop type electromagnetic reversing valve; and the sixth reversing valve is a two-position four-way electromagnetic reversing valve.

[0015] A heat dissipation module is installed on the outer side of the integrated valve group.

[0016] The heat dissipation module comprises a heat-conducting shell which is in contact with the integrated valve group, a heat-dissipating liquid channel is provided inside the heat-conducting shell, a liquid inlet connected to one end of the heat-dissipating liquid channel is provided on one side of the heat-conducting shell, and a liquid outlet connected to the other end of the heat-dissipating liquid channel is provided on the other side of the heat-conducting shell.

[0017] Beneficial effects of the present invention:

[0018] (1) The compact servo electro-hydraulic actuator does not require an additional pump station. It has a small and compact structure, can achieve telescopic functions to meet usage requirements, and is easy and quick to install and maintain;

[0019] (2) The integrated valve group is connected with other components for control, which reduces the number of pipes exposed to the outside and makes it less likely to have oil leaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural schematic diagrams of the compact servo electro-hydraulic actuator in the present invention.

[0021] Figure 2 This is the second structural schematic diagram of the compact servo electro-hydraulic actuator in the present invention.

[0022] Figure 3 It is a structural schematic diagram of the integrated valve group in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the heat dissipation module in the present invention. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0025] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 4 As shown, the compact servo electro-hydraulic actuator includes a hydraulic cylinder 23, one side of the hydraulic cylinder 23 is equipped with an integrated valve group 26, the other side of the hydraulic cylinder 23 is equipped with a bidirectional hydraulic pump 1, the bidirectional hydraulic pump 1 is transmission-connected to a servo motor 22, and the operation of the bidirectional hydraulic pump 1 is precisely controlled by the servo motor 22. The bidirectional hydraulic pump 1 is connected to the integrated valve group 26 through a pump connecting pipe 28, and the hydraulic cylinder 23 is connected to the integrated valve group 26; the compact servo electro-hydraulic actuator in this embodiment does not require an additional pump station, has a small and compact structure, and can realize the telescopic function to meet the use requirements; it is controlled by connecting the integrated valve group 26 with other components, thereby reducing the number of pipes exposed to the outside and not prone to oil leakage points.

[0027] like Figure 3As shown, the hydraulic cylinder 23 comprises a front cylinder body 2301 and a rear cylinder body 2302, the front cylinder body 2301 is coaxially connected with the rear cylinder body 2302, a front piston 2305 is installed inside the front cylinder body 2301; a rear rod body 2304 is connected to the side of the front piston 2305 close to the rear cylinder body 2302, a rear piston 2306 is installed on the rear rod body, and the other side of the front piston 2305 is connected to the front rod body 2303; the rear cylinder body 2302 is separated into a cavity A1 cavity 2307 close to the side of the front cylinder body 2301 by the rear piston 2306, and the front cylinder body 23 The cavity close to the rear cylinder body 2302 separated by the front piston 2305 inside 01 is the A2 cavity 2308, and the cavity away from the rear cylinder body 2302 separated by the front piston 2305 inside the front cylinder body 2301 is the A3 cavity 2308; when oil flows into the A2 cavity 2308, the A1 cavity 2307 and the A3 cavity 2309 discharge oil outwards, and the front cylinder body 2303 extends outwards to drive the external mechanism to move; conversely, when oil flows outwards from the A2 cavity 2308, the A1 cavity 2307 and the A3 cavity 2309 discharge oil inwards, and the front cylinder body 2303 retracts inwards.

[0028] As a specific implementation of the integrated valve group in the above implementation example, Figure 2 As shown, the integrated valve group comprises: a valve group body, the valve group body has port A, port B, port A1, port A2 and port A3, ports A and B are connected to the two-way hydraulic pump 1 through a pump connecting pipe 28, port A1 is connected to the A1 chamber 2307, port A2 is connected to the A2 chamber 2308, and port A3 is connected to the A3 chamber 2309; a first one-way valve, the oil outlet of the first one-way valve is connected to port A, and the oil inlet is connected to port A3 through a fifth overflow valve; a second one-way valve, the oil outlet of the second one-way valve is connected to port B, and the oil inlet is connected to the oil inlet of the first one-way valve; a third one-way valve, the oil inlet of the third one-way valve is connected to port A2, the oil outlets are respectively connected to port A, port A2 and port A3, and a sixth reversing valve is connected between the oil outlet of the third one-way valve and port A3; a fourth one-way valve, the oil outlet of the fourth one-way valve is connected to port A3, and the oil inlet is connected to the first one-way valve; The oil inlet of the three one-way valves is connected; the first relief valve, the oil inlet of the first relief valve is connected to the A port, and the oil outlet is connected to the oil outlet of the first one-way valve; the second relief valve, the oil inlet of the second relief valve is connected to the B port, and the oil outlet is connected to the oil outlet of the first relief valve; the third relief valve, the oil inlet of the third relief valve is connected to the A2 port, and the oil outlet is connected to the oil inlet of the third one-way valve; the fourth relief valve, the oil outlet of the fourth relief valve is connected to the A3 port through the fourth reversing valve, and the oil inlet is connected to two branches, one branch is connected to the A1 port through the pressure compensation flow control valve, and the other branch is connected to the B port through the fifth reversing valve and the third reversing valve in sequence; the first reversing valve, the oil inlet of the first reversing valve is connected to the A2 port, and the oil outlet is connected to the A port; the second reversing valve, the oil inlet of the second reversing valve is connected to the A3 port, and the oil inlet is connected to the B port.

[0029] When the above embodiment is in use, the A1 port, A2 port and A3 port are connected to the A1 chamber 2307, A2 chamber 2308 and A3 chamber 2309 of the hydraulic cylinder 23 respectively, and the hydraulic oil pumped into the A2 port and / or drawn out from the A3 port and A1 port can drive the actuator to extend; the hydraulic oil pumped into the A1 and A3 ports and / or drawn out from the A2 port can drive the front rod body 2303 to retract; the integrated valve group can control the actuator hydraulic cylinder to realize multiple action modes: fast extension, at which time the fifth reversing valve 15, the third reversing valve 13, the first reversing valve 11 and the sixth reversing valve 16 are energized, and the two-way hydraulic Pump 1 is started. Under the action of the bidirectional hydraulic pump 1, the hydraulic oil is pumped from the A2 port into the A2 chamber 2308. At the same time, the hydraulic oil in the A1 chamber 2307 flows back from the A1 port. The pressure at the fifth relief valve 10 increases and exceeds its set value, so that the hydraulic oil in the chamber connecting the hydraulic cylinder 23 and the A3 port is quickly discharged at a higher flow rate, thereby realizing the action of rapid extension of the actuator; slow extension, at this time, the fifth reversing valve 15, the third reversing valve 13, the first reversing valve 11, and the second reversing valve 16 are energized, and the bidirectional hydraulic pump 1 is started. Under the action of the bidirectional hydraulic pump 1, the hydraulic oil is pumped from the A2 port into the A2 chamber of the hydraulic cylinder 23. 2308, and at the same time, the hydraulic oil at port A1 flows back, and the hydraulic oil at port A3 flows back through the second reversing valve 12, so that the actuator can extend slowly; the cavity connected to port A2 of hydraulic cylinder 23 is kept under pressure, at which time the first to sixth reversing valves are all de-energized, the bidirectional hydraulic pump 1 stops, and the hydraulic oil inside the A2 cavity 2308 of hydraulic cylinder 23 cannot flow out through port A2, thereby achieving the function of maintaining pressure; the cavity connected to port A2 of hydraulic cylinder 23 is de-energized, at which time the fourth reversing valve is energized, the other reversing valves are de-energized, the bidirectional hydraulic pump 1 stops, and the hydraulic oil inside the hydraulic cylinder 23 is discharged by the A3 The hydraulic oil flows into the valve group from the A1 port, and then flows into the hydraulic cylinder 23 from the A2 port. The excess hydraulic oil flows into the accumulator for temporary storage. It retracts quickly. The fifth reversing valve 15, the third reversing valve 13, the fourth reversing valve 14 and the sixth reversing valve 16 are energized, and the two-way hydraulic pump 1 is started. The two-way hydraulic pump 1 pumps hydraulic oil into the hydraulic cylinder 23 from the A1 port and the A3 port, and the hydraulic cylinder 23 flows out of the hydraulic oil from the A2 port. At this time, the pressure at the third relief valve 8 gradually increases. When it reaches the set value, it quickly discharges the hydraulic oil in the cavity connecting the hydraulic cylinder 23 and the A2 port at a higher flow rate, thereby realizing the action of rapid retraction of the actuator.

[0030] Furthermore, the valve group body also has a filter 17, the oil inlet of the filter 17 is connected to the two-way hydraulic pump 1, and the oil outlet is connected to the oil inlet of the first one-way valve 2. Through the setting of the filter 17, the hydraulic oil passing through the filter 17 can be filtered during the hydraulic oil reflux process, and metal chips and other debris generated inside the actuator during the operation of the actuator can be filtered out to ensure the normal operation of the actuator.

[0031] Furthermore, the valve group body has an accumulator 18 and an SP port connected to the accumulator 18, the SP port is connected to the oil inlet of the first one-way valve 2, the accumulator 18 plays the role of buffering the internal pressure of the module, and temporarily stores the hydraulic oil when the hydraulic cylinder 23 is depressurized; the accumulator 18 is pre-filled with air pressure to prevent the hydraulic oil from flowing back in the initial state.

[0032] Furthermore, the valve group body has an SP3 port connected to the first pressure sensor 19, and the SP3 port is connected to the oil inlet of the first one-way valve 2. When in use, the first pressure sensor 19 can be installed at the SP3 port, and the pressure value of the accumulator 18 is detected by the first pressure sensor 19; the valve group body has an SP2 port connected to the second pressure sensor 20, and the SP2 port is connected to the A1 port. When in use, the second pressure sensor can be connected to the SP2 port, and the internal pressure of the cavity connected between the hydraulic cylinder 23 and the A1 port is detected by the second pressure sensor 20; the valve group body has an SP1 port connected to the third pressure sensor 21, and the SP1 port is connected to the A2 port. When in use, the third pressure sensor can be connected to the SP3 port, and the internal pressure of the cavity connected between the hydraulic cylinder 23 and the A2 port is detected by the third pressure sensor 21.

[0033] Furthermore, the first reversing valve 11, the second reversing valve 12, the third reversing valve 13 and the fourth reversing valve 14 are two-position three-way electromagnetic reversing valves; wherein the first reversing valve 11 is used for the cut-off and conduction control from port A2 to port A; the second reversing valve 12 is used for the cut-off and conduction control from port A3 to port B; the third reversing valve 13 is used for the cut-off and conduction control of the fifth reversing valve 15 to port B; the fourth reversing valve 14 is used for the cut-off and conduction control from port A3 to port A2; the fifth reversing valve 15 is a two-position connected cut-off electromagnetic reversing valve, and the fifth reversing valve 15 is used for the cut-off and conduction control between port A1 and port B; the sixth reversing valve 16 is a two-position four-way electromagnetic reversing valve, and the sixth reversing valve 16 is used for the cut-off and conduction control from port A2 to port A3.

[0034] like Figure 1 As shown, the outer side of the integrated valve group 26 is equipped with a heat dissipation module 27; more specifically, as shown Figure 4 As shown, the heat dissipation module 27 has a heat-conducting shell 2701 that is in contact with the integrated valve group 26. A heat dissipation liquid channel 2704 is provided inside the heat-conducting shell 2701 to increase the contact area between the coolant and the heat-conducting shell 271. A liquid inlet 2702 connected to one end of the heat dissipation liquid channel 2704 is provided on one side of the heat-conducting shell 2701, and a liquid outlet 2703 connected to the other end of the heat dissipation liquid channel 2704 is provided on the other side of the heat-conducting shell 2701. When in use, an external device is connected to pump the coolant from the liquid inlet 2702 into the heat dissipation liquid pipeline 2704. After the heat exchange is completed, the coolant flows out from the liquid outlet 2703 to achieve the heat dissipation effect.

[0035] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0036] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A compact servo electro-hydraulic actuator, characterized in that: It comprises a hydraulic cylinder, one side of which is equipped with an integrated valve group, the other side of which is equipped with a bidirectional hydraulic pump, the bidirectional hydraulic pump is connected to a servo motor through a pump connecting pipe, and the hydraulic cylinder is connected to the integrated valve group; The hydraulic cylinder comprises a front cylinder body and a rear cylinder body, the front cylinder body is coaxially connected with the rear cylinder body, a front piston is installed inside the front cylinder body; a rear rod body is connected to the side of the front piston close to the rear cylinder body, a rear piston is installed on the rear rod body, and the other side of the front piston is connected to the front rod body; a cavity close to the side of the front cylinder body is separated by the rear piston inside the rear cylinder body as cavity A1, a cavity close to the side of the rear cylinder body is separated by the front piston inside the front cylinder body as cavity A2, and a cavity on the other side is cavity A3; The integrated valve group comprises: A valve group body, wherein the valve group body has an A port, a B port, an A1 port, an A2 port and an A3 port, wherein the A port and the B port are connected to the bidirectional hydraulic pump through a pump connecting pipe, the A1 port is connected to the A1 cavity, the A2 port is connected to the A2 cavity, and the A3 port is connected to the A3 cavity; a first one-way valve, wherein the oil outlet of the first one-way valve is connected to the A port, and the oil inlet of the first one-way valve is connected to the A3 port through a fifth relief valve; a second one-way valve, wherein the oil outlet of the second one-way valve is connected to the port B, and the oil inlet of the second one-way valve is connected to the oil inlet of the first one-way valve; a third one-way valve, wherein the oil inlet of the third one-way valve is connected to the A2 port, the oil outlet is respectively connected to the A port, the A2 port and the A3 port, and a sixth reversing valve is connected between the oil outlet of the third one-way valve and the A3 port; a fourth one-way valve, wherein the oil outlet of the fourth one-way valve is connected to the A3 port, and the oil inlet of the fourth one-way valve is connected to the oil inlet of the third one-way valve; a first overflow valve, wherein the oil inlet of the first overflow valve is connected to the port A, and the oil outlet of the first overflow valve is connected to the oil outlet of the first check valve; a second relief valve, wherein the oil inlet of the second relief valve is connected to the port B, and the oil outlet of the second relief valve is connected to the oil outlet of the first relief valve; a third overflow valve, wherein the oil inlet of the third overflow valve is connected to the A2 port, and the oil outlet is connected to the oil inlet of the third check valve; A fourth overflow valve, the oil outlet of the fourth overflow valve is connected to the A3 port through a fourth reversing valve, and the oil inlet is connected to two branches, one branch is connected to the A1 port through a pressure compensation flow control valve, and the other branch is connected to the B port through a fifth reversing valve and a third reversing valve in sequence; a first reversing valve, wherein the oil inlet of the first reversing valve is connected to the A2 port, and the oil outlet of the first reversing valve is connected to the A port; a second reversing valve, wherein the oil inlet of the second reversing valve is connected to the A3 port, and the oil inlet is connected to the B port; The valve group body also has a filter, the oil inlet of the filter is connected to the bidirectional hydraulic pump, and the oil outlet is connected to the oil inlet of the first one-way valve; The valve group body has an accumulator and an SP port connected to the accumulator, and the SP port is connected to the oil inlet of the first one-way valve.

2. The compact servo electro-hydraulic actuator according to claim 1, characterized in that: The accumulator is pre-charged with gas pressure.

3. The compact servo electro-hydraulic actuator according to claim 1, characterized in that: The valve group body has a first pressure sensor and an SP3 port connected to the first pressure sensor, and the SP3 port is connected to the oil inlet of the first one-way valve; the valve group body has a second pressure sensor and an SP2 port connected to the second pressure sensor, and the SP2 port is connected to the A1 port; the valve group body has a third pressure sensor and an SP1 port connected to the third pressure sensor, and the SP1 port is connected to the A2 port.

4. The compact servo electro-hydraulic actuator according to claim 1, characterized in that: The first reversing valve, the second reversing valve, the third reversing valve and the fourth reversing valve are two-position three-way electromagnetic reversing valves; the fifth reversing valve is a two-position connecting stop type electromagnetic reversing valve; and the sixth reversing valve is a two-position four-way electromagnetic reversing valve.

5. The compact servo electro-hydraulic actuator according to claim 1, characterized in that: A heat dissipation module is installed on the outer side of the integrated valve group.

6. The compact servo electro-hydraulic actuator according to claim 5, characterized in that: The heat dissipation module comprises a heat-conducting shell which is in contact with the integrated valve group, a heat-dissipating liquid channel is provided inside the heat-conducting shell, a liquid inlet connected to one end of the heat-dissipating liquid channel is provided on one side of the heat-conducting shell, and a liquid outlet connected to the other end of the heat-dissipating liquid channel is provided on the other side of the heat-conducting shell.

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