Multifunctional combined multi-way reversing valve

Abstract

The invention discloses a multifunctional combined multi-way reversing valve. Relates to the technical field of reversing valves. Comprising a valve body, a first valve element and a second valve element, the first valve element and the second valve element are arranged in the valve body, a valve cavity is formed in the valve body, a feeding pipe and two discharging pipes are arranged on the outer wall of the valve body, a hydraulic cylinder is arranged on the outer side of the valve body, and the first valve element and the second valve element are connected through a connecting assembly. The hydraulic cylinder is used for driving the first valve element to reciprocate in the length direction of the valve cavity. The connecting assembly comprises a polished rod and a lead screw which are movably connected with each other, the polished rod is arranged on the inner side of the first valve element in a penetrating mode, one end of the lead screw is connected with the end of the polished rod, and the other end of the lead screw penetrates through the second valve element. A motor is arranged on the outer side of the valve body and used for driving the lead screw to rotate. The two discharging pipes can be converted into a simultaneous discharging state from an alternate discharging state, so that the discharging device adapts to more complex application scenes.

Description

Technical Field

[0001] The present application relates to the technical field of reversing valves, and in particular to a multifunctional combined multi-way reversing valve. Background Art

[0002] The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cutting and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. The reversing valve is mainly divided into two types: rotary valve type and slide valve type. Both rely on the relative movement of the valve core and the valve body to control the flow direction of the fluid.

[0003] A reversing valve is disclosed in a Chinese patent document with the announcement number CN219911852U, and specifically discloses a valve body, wherein a valve core is provided inside the valve body, a valve stem is fixedly provided on the valve core, the front end of the valve stem is rotatably connected to the inner wall of the front end of the valve body, the rear end of the valve stem penetrates the valve body and extends to the rear side of the valve body, a groove is provided inside the valve body, a sealing ring is provided inside the groove, the inner wall of the sealing ring contacts the outer wall of the valve stem, and an adjustment component is provided on the rear side of the sealing ring. The patent drives the valve core to rotate by the valve stem to seal the two liquid outlet pipes respectively, thereby realizing the reversal of the valve body. At the same time, the patent can also prevent the valve stem from wearing the inner wall of the sealing ring for a long time, and ensure the continuous and reliable sealing performance of the sealing ring.

[0004] However, in the above patent, only one of the two liquid outlet pipes can be connected to the liquid inlet pipe at any time, and it is impossible to perform the operation of connecting the two liquid outlet pipes to the liquid inlet pipe at the same time in special scenarios. The overall function is relatively single and difficult to adapt to different operating scenarios. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present application provides a multifunctional combined multi-way reversing valve. The multifunctional combined multi-way reversing valve comprises a valve body and a first valve core and a second valve core arranged in the valve body, a valve cavity is arranged inside the valve body, a feed pipe and two discharge pipes are arranged on the outer wall of the valve body, the first valve core and the second valve core are adaptively arranged in the valve cavity, and the valve body is characterized in that a hydraulic cylinder is arranged on the outer side of the valve body, the first valve core and the second valve core are connected by a connecting assembly, and the hydraulic cylinder is used to drive the first valve core to reciprocate along the length direction of the valve cavity; the connecting assembly comprises a polished rod and a screw rod movably connected to each other, the polished rod is passed through the inner side of the first valve core and connected to the push rod of the hydraulic cylinder, one end of the screw rod is connected to the end of the polished rod, and the other end of the screw rod passes through the second valve core and extends to the outer side of the valve body; a motor is arranged on the outer side of the valve body, and the motor is used to drive the screw rod to rotate, a limit groove is arranged on the inner wall of the valve cavity, and a limit block is arranged on the outer wall of the second valve core, and the limit block can slide adaptively in the limit groove.

[0006] By adopting the above technical solution, under the drive of the hydraulic cylinder, the first valve core and the second valve core will reciprocate in the valve cavity. At this time, the two discharge pipes can and can only be alternately connected to the feed pipe. When both discharge pipes need to be connected to the feed pipe, the discharge pipe corresponding to the first valve core is first connected to the feed pipe, and then the lead screw is driven to rotate by the motor. Under the limiting action of the limit block and the limit groove, the second valve core can move alone in the horizontal direction, so that the discharge pipe corresponding to the second valve core can also be connected to the feed pipe. In this way, the reversing valve can adapt to a variety of usage scenarios and has stronger functionality.

[0007] Optionally, the optical rod and the screw rod are coaxially arranged, the optical rod and the first valve core are interference fit, the screw rod and the second valve core are threadedly connected, and a slope is provided on the side of the first valve core facing the second valve core and on the side of the second valve core facing the first valve core.

[0008] By adopting the above technical solution, the smooth rod and the first valve core can only produce synchronous horizontal movement, while the screw rod and the second valve core can produce synchronous horizontal movement or relative string movement. By setting the slope, the material can flow more smoothly into the corresponding discharge pipe when it contacts the first valve core or the second valve core, reducing the probability of turbulence of the material in the valve cavity, thereby reducing the wear of the first valve core, the second valve core or the valve body.

[0009] Optionally, a receiving groove is provided on the end face of the screw rod facing the optical rod, and the end of the optical rod close to the screw rod is inserted into the receiving groove. A bearing is provided at the end of the optical rod, and the outer ring of the bearing has an interference fit with the inner wall of the receiving groove, the inner ring of the bearing has an interference fit with the optical rod, and a limit ring is provided on the inner wall of the receiving groove, and the limit ring is in contact with the end face of the bearing.

[0010] By adopting the above technical solution, the bearing is used to connect the polished rod and the lead screw, so that when the hydraulic cylinder drives the polished rod, the first valve core and the second valve core can move synchronously in the valve cavity, and when the motor drives the lead screw, the lead screw will rotate and realize the horizontal movement of the second valve core. At this time, the polished rod and the first valve core will be in a static state. The setting of the limit ring plays a role in limiting the depth of the polished rod and the bearing inserted into the accommodating groove.

[0011] Optionally, a sleeve is provided on the outer side of the light rod, the light rod is inserted from the bottom of the sleeve to the inner side of the sleeve, the screw rod is inserted from the mouth of the sleeve to the inner side of the sleeve, a support sleeve is provided between the outer wall of the light rod and the sleeve, the support sleeve is fixedly connected to the sleeve, the support sleeve can rotate around the outer wall of the light rod, and the outer wall of the screw rod is in contact with the inner wall of the sleeve.

[0012] By adopting the above technical solution, the sleeve plays a wrapping role on the joint between the polished rod and the lead screw, thereby reducing the probability of contact between the material and the bearing to the greatest extent.

[0013] Optionally, the outer wall of the limiting ring is in contact with the inner wall of the containing groove, and there is a distance between the inner wall of the limiting ring and the outer wall of the polished rod.

[0014] By adopting the above technical solution, it is ensured that no friction is generated between the limit ring and the polished rod, and while limiting the bearing, the wear of the polished rod during the rotation process is reduced.

[0015] Optionally, a ball head is provided on one end face of the smooth rod located in the accommodating groove, and a cross bar extending axially along the accommodating groove is provided on the ball head, and a threaded hole is provided on the outer wall of the cross bar; a screw is passed through the outer wall of the sleeve, the tail of the screw is pressed against the outer wall of the sleeve, and the head of the screw is inserted into the accommodating groove and screwed on the threaded hole.

[0016] By adopting the above technical solution, when the screw is screwed into the threaded hole, the cross rod and the ball head can rotate around the axis of the light rod, but cannot move along the axis of the light rod. In this way, without affecting the rotation of the screw rod, the axial limiting effect of the light rod and the screw rod is achieved, thereby preventing the light rod and the screw rod from separating from each other.

[0017] Optionally, the valve body is arranged on the base, and an air hole is provided on both sides of the bottom of the valve body. A pair of through grooves are provided on the top of the base. The through grooves extend along the length direction of the base. One end of the air hole is connected to the valve cavity, and the other end of the air hole is connected to the through groove.

[0018] By adopting the above technical solution, the air hole is connected with the through groove, so that the valve cavity is connected with the outside world. Specifically, the part of the valve cavity connected with the outside world is between the end of the valve body and the first valve core or the end of the valve body and the second valve core. In this way, while ensuring that the first valve core and the second valve core can move reliably, no material will leak to the outside of the valve body through the air hole. If material is found in the through groove, it means that the sealing performance of the first valve core or the second valve core is reduced and needs to be replaced in time.

[0019] Optionally, a shell is detachably provided on both sides of the valve body, the smooth rod is inserted into the inner side of one of the shells, and the screw rod is inserted into the inner side of the other shell; the hydraulic cylinder is detachably arranged in one of the shells and connected to the smooth rod, the motor is detachably arranged in the other shell, a sleeve is provided on the output shaft of the motor, a plurality of splines are provided on the inner wall of the sleeve, a plurality of key slots are provided on the outer wall of one end of the screw rod, the key slots extend along the axial direction of the screw rod, and a plurality of splines are respectively and one-to-one arranged in the key slots.

[0020] By adopting the above technical solution, the two shells cover the hydraulic cylinder and the motor respectively, which not only protects the hydraulic cylinder and the motor but also has an aesthetic effect.

[0021] Optionally, the length of the keyway is greater than the length of the spline, and the elongation of the hydraulic cylinder is less than the movement of the spline in the keyway.

[0022] By adopting the above technical solution, the sleeve is connected to the motor in a fixed position, and the light rod and the lead screw can rotate under the drive of the hydraulic cylinder. At this time, the spline will slide in the keyway, so that the rotation of the lead screw and the movement of the lead screw can complement each other.

[0023] Compared with the prior art, in the present application, a rotational connection between the lead screw and the light rod is achieved through bearings and ball heads, so that the light rod can pull the lead screw to produce axial movement, and when the lead screw rotates, the light rod can remain stationary. In this way, the hydraulic cylinder can be used to drive the light rod to achieve synchronous movement of the first valve core and the second valve core, and the electric motor can be used to drive the lead screw to achieve the second valve core's independent rotation, thereby realizing the two discharge pipes from the alternating discharge state to the simultaneous discharge state, which can adapt to more complex application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic stereogram of the present application;

[0025] Figure 2 It is the reference diagram of the explosion state of the valve body;

[0026] Figure 3 It is a cross-sectional view of the internal structure of the valve body;

[0027] Figure 4 is a reference diagram of the assembly state of the first valve core and the second valve core;

[0028] Figure 5 is a cross-sectional view of the internal structure of the first valve core and the second valve core;

[0029] Figure 6 yes Figure 5A schematic diagram of the enlarged structure at A in the middle;

[0030] In the figure: 1. valve body; 11. valve cavity; 12. feed pipe; 13. discharge pipe; 14. limit groove; 15. air hole; 16. shell; 2. first valve core; 20. slope; 3. second valve core; 30. limit block; 4. hydraulic cylinder; 5. bare rod; 51. bearing; 52. sleeve; 521. support sleeve; 522. screw; 53. ball head; 54. cross bar; 540. threaded hole; 6. screw; 61. accommodating groove; 62. limit ring; 63. keyway; 7. motor; 71. sleeve; 710. spline; 8. base; 80. through groove. DETAILED DESCRIPTION

[0031] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] like Figure 1-6 As shown, a multifunctional combined multi-way reversing valve comprises a base 8 and a valve body 1 arranged on the base 8. A cylindrical valve cavity 11 is arranged in the valve body 1. A feed pipe 12 and two discharge pipes 13 are arranged on the outer wall of the valve body 1. The two discharge pipes 13 are arranged at intervals along the axial direction of the valve body 1. The axis of the feed pipe 12 and the axis of the discharge pipe 13 are in the same plane, and the feed pipe 12 is located between the two discharge pipes 13. A housing 16 is detachably provided on both sides of the valve body 1. An opening is provided on one side of the housing 16. The opening of the housing 16 is covered at the end of the valve body 1. A hydraulic cylinder 4 is arranged in one housing 16, and a motor 7 is arranged in the other housing 16. A first valve core 2 and a second valve core 3 are arranged in the valve cavity 11. The first valve core 2 and the second valve core 3 are connected by a connecting assembly. The first valve core 2 is used to block one discharge pipe 13, and the second valve core 3 is used to block the other discharge pipe 13. The connecting assembly includes a rod 5 and a screw rod 6. The rod 5 passes through the first valve core 2 and is interference fit with the first valve core 2. The screw rod 6 passes through the second valve core 3 and is threadedly connected to the second valve core 3. One end of the rod 5 extends into a housing 16 and is connected to the push rod of the hydraulic cylinder 4. The other end of the rod 5 is close to the second valve core 3. One end of the screw rod 6 extends into another housing 16 and is connected to the output shaft of the motor 7. The other end of the screw rod 6 is close to the first valve core 2. A connecting assembly is provided between the other end of the rod 5 and the other end of the screw rod 6. A limit groove 14 is provided on the inner wall of the valve cavity 11. The limit groove 14 extends along the axial direction of the valve cavity 11. A limit block 30 is provided on the outer wall of the second valve core 3. The limit block 30 can slide in the limit groove 14.

[0033] A receiving groove 61 is provided on the end face of the screw rod 6 facing the light rod 5, and the end of the light rod 5 close to the screw rod 6 is inserted in the receiving groove 61. A bearing 51 is provided at the end of the light rod 5. The outer ring of the bearing 51 and the inner wall of the receiving groove 61 are interference fit, and the inner ring of the bearing 51 and the light rod 5 are interference fit. A limiting ring 62 is provided on the inner wall of the receiving groove 61, and the limiting ring 62 is in contact with the end face of the bearing 51, and the outer wall of the limiting ring 62 is in contact with the inner wall of the receiving groove 61. There is a distance between the inner wall of the limiting ring 62 and the outer wall of the light rod 5. A sleeve 52 is provided on the outer side of the light rod 5. The light rod 5 is inserted from the sleeve bottom of the sleeve 52 to the inner side of the sleeve 52. The screw rod 6 is inserted from the sleeve mouth of the sleeve 52 to the inner side of the sleeve 52. A support sleeve 521 is provided between the outer wall of the light rod 5 and the sleeve 52. The support sleeve 521 is fixedly connected to the sleeve 52. The support sleeve 521 can rotate around the outer wall of the light rod 5. The outer wall of the screw rod 6 fits the inner wall of the sleeve 52. A ball head 53 is provided on the end face of one end of the light rod 5 located in the receiving groove 61. A cross bar 54 extending axially along the receiving groove 61 is provided on the ball head 53. A threaded hole 540 is provided on the outer wall of the cross bar 54. A screw rod 522 is inserted on the outer wall of the sleeve 52. The tail of the screw rod 522 presses against the outer wall of the sleeve 52. The head of the screw rod 522 is inserted into the receiving groove 61 and screwed on the threaded hole 540.

[0034] Since the polished rod 5 is inserted into the receiving groove 61 and a bearing 51 is provided between the polished rod 5 and the receiving groove 61, the polished rod 5 can drive the screw rod 6 to move axially, and when the motor 7 drives the screw rod 6 to rotate, under the action of the bearing 51, the screw rod 6 can rotate reliably while the polished rod 5 can remain stationary. Further, before the polished rod 5 is inserted into the receiving groove 61, a small amount of colloid can be coated on the surface of the ball head 53, so that the cross bar 54 can remain coaxial with the polished rod 5, and in the process of moving the polished rod 5, the cross bar 54 and the ball head 53 will not rotate, so that when the polished rod 5 is inserted, the screw rod 522 can be accurately inserted into the threaded hole 540, so as to achieve the locking of the cross bar 54 and the screw rod 522. Under the cooperation of the cross bar 54 and the screw rod 522, the polished rod 5 and the screw rod 6 are more difficult to separate, ensuring that when the hydraulic cylinder 4 drives the polished rod 5, the polished rod 5 will not be separated from the receiving groove 61. Moreover, under the sealing action of the sleeve 52, the joint between the light rod 5 and the screw rod 6 is in a closed state, which minimizes the probability of material entering the accommodating groove 61 and ensures that when the screw rod 6 rotates, the ball head 53 and the bearing 51 can rotate, so that the screw rod 6 is in a rotating state and the light rod 5 is in a stationary state.

[0035] Furthermore, a sleeve 71 is provided on the output shaft of the motor 7, and a plurality of splines 710 are provided on the inner wall of the sleeve 71. A plurality of keyways 63 are provided on the outer wall of one end of the screw rod 6, and the keyway 63 extends along the axial direction of the screw rod 6. The plurality of splines 710 are respectively and one-to-one arranged in the keyway 63. The length of the keyway 63 is greater than the length of the spline 710, and the elongation of the hydraulic cylinder 4 is less than the movement of the spline 710 in the keyway 63. The spline 710 is always located in the keyway 63. When the hydraulic cylinder 4 drives the polished rod 5 to generate displacement, the screw rod 6 will move toward the inner side of the sleeve 71. At this time, the spline 710 will also move in the keyway 63, and when the push rod of the hydraulic cylinder 4 reaches the maximum elongation, the spline 710 will not contact the end of the keyway 63. When the screw rod 6 needs to be driven, the motor 7 drives the sleeve 71, and with the cooperation of the spline 710 and the keyway 63, the screw rod 6 can be reliably rotated, that is, the circumferential rotation of the screw rod 6 and the horizontal movement of the screw rod 6 do not interfere with each other.

[0036] The valve body 1 is arranged on the base 8. An air hole 15 is arranged on both sides of the bottom of the valve body 1. A pair of through grooves 80 are arranged on the top of the base 8. The through grooves 80 extend along the length direction of the base 8. One end of the air hole 15 is connected to the valve cavity 11, and the other end of the air hole 15 is connected to the slide groove. The arrangement of the air hole 15 ensures that the first valve core 2 and the second valve core 3 can reliably move back and forth in the valve cavity 11. Multiple sealing rings are arranged on the first valve core 2 and the second valve core 3. When the sealing effect of the sealing ring is reliable, the material will not enter the air hole 15. If there is material passing through the air hole 15 into the through groove 80, it means that the sealing ring is excessively worn and needs to be replaced in time. While playing a ventilation role, it is convenient for operators to observe.

[0037] In conventional use scenarios, the hydraulic cylinder 4 can drive the light rod 5. Since the light rod 5 is connected to the screw rod 6 by a connecting assembly, and the light rod 5 and the screw rod 6 are coaxially arranged, the screw rod 6 can move synchronously with the light rod 5, thereby enabling the first valve core 2 and the second valve core 3 to reciprocate in the valve cavity 11. The side of the first valve core 2 facing the second valve core 3 and the side of the second valve core 3 facing the first valve core 2 are both provided with a slope 20. In this way, during the movement of the first valve core 2 and the second valve core 3, the slope 20 will directly contact the material, thereby playing a guiding role in the material movement process, avoiding turbulence of the material in the valve cavity 11, improving the smoothness of the material flow and reducing the wear of the first valve core 2 and the second valve core 3. Driven by the hydraulic cylinder 4, the two discharge pipes 13 will be in a state of being alternately connected with the feed pipe 12. Specifically, when the push rod of the hydraulic cylinder 4 is extended, the first valve core 2 forms a blocking effect on one discharge pipe 13. At this time, the second valve core 3 is staggered with the other discharge pipe 13, so that the feed pipe 12 and the other discharge pipe 13 are in a connected state; when the push rod of the hydraulic cylinder 4 is recovered, the second valve core 3 forms a blocking effect on the other discharge pipe 13. At this time, the first valve core 2 is staggered with the one discharge pipe 13, so that the feed pipe 12 and the one discharge pipe 13 are in a connected state.

[0038] In special usage scenarios, when two discharge pipes 13 are required to discharge materials at the same time, the hydraulic cylinder 4 is retracted, so that the first valve core 2 and one discharge pipe 13 are offset from each other, and the second valve core 3 blocks the other discharge pipe 13, and then the motor 7 drives the screw rod 6 to rotate. With the cooperation of the limit block 30 and the limit groove 14, and since the screw rod 6 and the second valve core 3 are threadedly connected, the rotation of the screw rod 6 can realize the horizontal movement of the second valve core 3 in the valve cavity 11, and at this time, the light rod 5 remains stationary, so that the blocking effect of the second valve core 3 on the other discharge pipe 13 is released, and both discharge pipes 13 can perform discharge operations.

[0039] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A multifunctional combined multi-way reversing valve, comprising a valve body (1) and a first valve core (2) and a second valve core (3) arranged in the valve body (1), wherein a valve cavity (11) is arranged in the valve body (1), a feed pipe (12) and two discharge pipes (13) are arranged on the outer wall of the valve body (1), the first valve core (2) and the second valve core (3) are adaptively arranged in the valve cavity (11), and characterized in that: A hydraulic cylinder (4) is provided on the outer side of the valve body (1); the first valve core (2) and the second valve core (3) are connected via a connecting assembly; the hydraulic cylinder (4) is used to drive the first valve core (2) to move back and forth along the length direction of the valve cavity (11); The connecting assembly comprises a polished rod (5) and a screw rod (6) which are movably connected to each other, the polished rod (5) is arranged inside the first valve core (2) and is connected to the push rod of the hydraulic cylinder (4), one end of the screw rod (6) is connected to the end of the polished rod (5), and the other end of the screw rod (6) passes through the second valve core (3) and extends to the outside of the valve body (1); An electric motor (7) is provided on the outer side of the valve body (1), and the electric motor (7) is used to drive the screw rod (6) to rotate. A limiting groove (14) is provided on the inner wall of the valve cavity (11), and a limiting block (30) is provided on the outer wall of the second valve core (3). The limiting block (30) can slide in the limiting groove (14) in an adaptive manner.

2. The multifunctional combined multi-way directional control valve according to claim 1, characterized in that: The smooth rod (5) and the screw rod (6) are coaxially arranged, the smooth rod (5) and the first valve core (2) are interference fit, the screw rod (6) and the second valve core (3) are threadedly connected, and a slope surface (20) is provided on the side of the first valve core (2) facing the second valve core (3) and the side of the second valve core (3) facing the first valve core (2).

3. The multifunctional combined multi-way directional control valve according to claim 2, characterized in that: The end face of the lead screw (6) facing the light rod (5) is provided with a receiving groove (61), and the end of the light rod (5) close to the lead screw (6) is inserted into the receiving groove (61). The end of the light rod (5) is provided with a bearing (51), and the outer ring of the bearing (51) is interference fit with the inner wall of the receiving groove (61), and the inner ring of the bearing (51) is interference fit with the light rod (5). A limiting ring (62) is provided on the inner wall of the receiving groove (61), and the limiting ring (62) is in contact with the end face of the bearing (51).

4. The multifunctional combined multi-way directional control valve according to claim 3 is characterized in that: A sleeve (52) is provided on the outer side of the light rod (5), the light rod (5) is inserted from the bottom of the sleeve (52) to the inner side of the sleeve (52), and the screw rod (6) is inserted from the mouth of the sleeve (52) to the inner side of the sleeve (52), a support sleeve (521) is provided between the outer wall of the light rod (5) and the sleeve (52), the support sleeve (521) is fixedly connected to the sleeve (52), the support sleeve (521) can rotate around the outer wall of the light rod (5), and the outer wall of the screw rod (6) is in contact with the inner wall of the sleeve (52).

5. The multifunctional combined multi-way directional control valve according to claim 3, characterized in that: The outer wall of the limiting ring (62) fits with the inner wall of the containing groove (61), and there is a distance between the inner wall of the limiting ring (62) and the outer wall of the polished rod (5).

6. The multifunctional combined multi-way directional control valve according to claim 4, characterized in that: A ball head (53) is provided on one end surface of the polished rod (5) located in the receiving groove (61), a cross bar (54) extending axially along the receiving groove (61) is provided on the ball head (53), and a threaded hole (540) is provided on the outer wall of the cross bar (54); A screw rod (522) is inserted through the outer wall of the sleeve (52), the tail of the screw rod (522) presses against the outer wall of the sleeve (52), and the head of the screw rod (522) penetrates into the receiving groove (61) and is screwed onto the threaded hole (540).

7. The multifunctional combined multi-way directional control valve according to claim 1, characterized in that: The valve body (1) is arranged on a base (8), and an air hole (15) is provided on both sides of the bottom of the valve body (1). A pair of through grooves (80) are provided on the top of the base (8), and the through grooves (80) extend along the length direction of the base (8). One end of the air hole (15) is connected to the valve cavity (11), and the other end of the air hole (15) is connected to the through groove (80).

8. The multifunctional combined multi-way directional control valve according to claim 7, characterized in that: A shell (16) is detachably provided on both sides of the valve body (1), the polished rod (5) penetrates into the inner side of one of the shells (16), and the screw rod (6) penetrates into the inner side of the other of the shells (16); The hydraulic cylinder (4) is detachably arranged in one of the housings (16) and connected to the bare rod (5); the motor (7) is detachably arranged in another of the housings (16); a sleeve (71) is arranged on the output shaft of the motor (7); a plurality of splines (710) are arranged on the inner wall of the sleeve (71); a plurality of keyways (63) are arranged on the outer wall of one end of the screw rod (6); the keyway (63) extends along the axial direction of the screw rod (6); and a plurality of splines (710) are respectively and one-to-one arranged in the keyway (63).

9. The multifunctional combined multi-way directional control valve according to claim 8, characterized in that: The length of the keyway (63) is greater than the length of the spline (710), and the elongation of the hydraulic cylinder (4) is less than the movement of the spline (710) in the keyway (63).

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