Cartridge valve with one-way speed regulation function

Abstract

The utility model relates to the technical field of hydraulic pressure, in particular to a cartridge valve with a one-way speed regulation function, which comprises a valve body, a movable valve core in sliding connection with the front part in the valve body, a flow choking piece in sliding connection with the rear part in the movable valve core, a spring I connected with the rear part of the flow choking piece and a speed regulation valve core in sliding connection with the rear part in the valve body, the front end in the valve body is in threaded connection with a butt-joint sleeve, a filter screen is arranged at the front end of the butt-joint sleeve in an embedded mode, a primary valve element is connected into the butt-joint sleeve in a sliding mode, and a three-way hole is formed in the front end of the primary valve element. The motor drives the rotating sleeve on the output shaft of the motor to rotate synchronously, the speed regulating screw can slide in the rotating sleeve and move forwards or backwards at the same time, the position of the speed regulating valve element is adjusted, the speed regulating valve element can move forwards and backwards according to movement of the speed regulating screw, the size of an opening of a channel in the valve body is changed, and therefore flow regulation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic technology field especially relates to a plug-in valve with one -way speed regulation function. BACKGROUND

[0002] The plug-in valve is a kind of control element for being used in hydraulic system, is usually composed of valve core, valve body, spring and the like component.Its feature is compact structure, easy installation, large flow capacity, is widely used in pressure, flow and direction control in hydraulic system.The plug-in valve is usually installed in valve block or integrated block, and complex hydraulic control function can be realized by combination use.

[0003] The existing one-way throttle valve mostly adopts the mode that fluid flow is manually adjusted by hand, and this mode can meet the demand of flow control to some extent, but also has many problems and limitations.Manual adjustment often depends on the experience and hand feeling of operator, and it is difficult to realize accurate flow control, in addition, there can be error in adjustment process, leading to unstable flow or deviating from set value.

[0004] Therefore, it is necessary to design a plug-in valve with one-way speed regulation function. CONTENT OF UTILITY MODEL

[0005] The utility model discloses in order to overcome the shortcoming that exists in prior art, the utility model provides a plug-in valve with one -way speed regulation function.

[0006] In order to solve the above technical problem, the utility model provides a kind of plug-in valve with one -way speed regulation function, including valve body, movable valve core is slidably connected in the front part of valve body, flow resistance piece is slidably connected in the rear part of movable valve core, spring one is connected in the rear part of flow resistance piece, speed regulation valve core is slidably connected in the rear part of valve body, the front end of spring one is connected with the front end of speed regulation valve core, the threaded connection of the front end of valve body is provided with the docking sleeve, the filter screen of embedding type is arranged in the front end of docking sleeve, the preliminary valve core is slidably connected in the docking sleeve, the preliminary valve core is provided with the three-way hole in the front end, the front part of docking sleeve is provided with a plurality of symmetrical pressure relief holes along the circumference, preliminary valve core can shield pressure relief hole when sliding, spring two is connected in the rear part of preliminary valve core, spring two rear part extends into the front part of valve body, and the rear end of spring two is connected with the front end of flow resistance piece, the rear end of valve body is provided with fixed sleeve, motor is installed at the rear end of fixed sleeve, the output shaft of motor rotates and penetrates the rear part of fixed sleeve, and the output shaft is provided with rotating sleeve, speed regulation screw is slidably connected in the rotating sleeve, the rear part of speed regulation screw is rod-shaped part, and the front part is screw part, the rod-shaped part is slidably connected with the rotating sleeve, and the screw part is threadedly connected with the rear part of valve body.

[0007] Preferably, it further includes protective cover, the rear end of reinforcing sleeve is fixed with protective cover, and protective cover covers the outside of motor.

[0008] Preferably, the wedge-shaped clamping rods are symmetrically arranged at the rear end of the protective cover, and the closure cover is clamped between the two wedge-shaped clamping rods.

[0009] Preferably, the controller and the operation screen are further included, the controller is installed at the rear end of the protective cover, the closure cover covers the outside of the controller, the operation screen is installed on the outside of the fixed sleeve, and the operation screen is electrically connected with the controller and the motor.

[0010] Preferably, the flow monitor is further included, and the flow monitor is installed at the front end of the docking sleeve.

[0011] Preferably, the sealing ring one and the sealing ring two are further included, the sealing ring one is sleeved on the outside of the valve body and the docking sleeve, and the sealing ring two is sleeved on the outside of the movable valve core, the speed regulating valve core and the preliminary valve core.

[0012] Preferably, the reinforcing pad is further included, and the reinforcing pad is installed at the rear part of the fixed sleeve and is rotationally connected with the rotating shaft of the rotating sleeve and the output shaft of the motor.

[0013] Beneficial effects: 1. The motor drives the rotating sleeve on the output shaft to rotate synchronously, the speed regulating screw slides in the rotating sleeve, moves forward or backward, adjusts the position of the speed regulating valve core, and enables the speed regulating valve core to displace forward and backward according to the movement of the speed regulating screw, changes the opening size of the passage in the valve body, and thus realizes flow regulation.

[0014] 2. The flow monitor is installed at the front end of the docking sleeve, monitors the flow data passing through the valve body in real time, and transmits the data to the controller. The controller judges whether the current flow meets the set value according to the data of the flow monitor. If the flow deviates from the set value, the controller will further adjust the speed and direction of the motor to fine-tune the position of the speed regulating valve core, so that the flow returns to the set range, to ensure the accuracy of flow regulation.

[0015] 3. When the pressure in the valve body changes, the preliminary valve core moves forward and backward according to the change of the pressure. The preliminary valve core is connected with the flow resistance element through the spring two, can quickly respond when the pressure fluctuates, reduces the influence of pressure impact on the system, and effectively prevents the system instability problem caused by pressure fluctuation.

[0016] 4. The docking sleeve is circumferentially provided with a plurality of symmetrical pressure relief holes. During the movement of the preliminary valve core, the pressure relief holes can release part of the pressure to prevent the system from being damaged due to excessive pressure, not only protect the safety of the system, but also prolong the service life of the equipment.

[0017] 5. When the speed regulating valve core moves, the flow resistance element moves accordingly to adjust the opening size of the passage in the valve body. The spring one can provide a buffering effect during the movement of the speed regulating valve core to avoid impact and wear caused by rapid movement and prolong the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0019] Figure 2 It is an explosion view display of valve body, butt joint sleeve and fixed sleeve and other components of the utility model.

[0020] Figure 3 It is a sectional structure schematic view of valve body, butt joint sleeve and fixed sleeve and other components of the utility model.

[0021] Figure 4 It is a sectional structure schematic view of valve body, movable valve core and spring one and other components of the utility model.

[0022] Figure 5 It is a sectional structure schematic view of fixed sleeve, rotating sleeve and protective cover and other components of the utility model.

[0023] Figure 6 It is a sectional structure schematic view of preliminary valve core, spring two and sealing ring one and other components of the utility model.

[0024] Figure 7 It is a sectional structure schematic view of valve body, spring one and sealing ring two and other components of the utility model.

[0025] The marks in the drawing are: 1-valve body, 11-movable valve core, 12-flow resistance piece, 13-spring one, 14-speed regulating valve core, 2-butt joint sleeve, 201-filter screen, 21-preliminary valve core, 210-three-way hole, 22-pressure relief hole, 23-spring two, 3-fixed sleeve, 31-motor, 32-rotating sleeve, 33-speed regulating screw, 4-controller, 41-control screen, 5-protective cover, 51-wedge-shaped clamping rod, 52-closed cover, 6-flow monitor, 7-sealing ring one, 71-sealing ring two, 8-reinforcing pad. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings and examples.

[0027] Example: a plug-in valve with one-way speed regulation function, such as Figures 1-4 and Figure 7As shown, including the valve body 1, the valve body 1 as the main structure of the whole device, contains other components, and provides a passage for hydraulic oil flow, and is fixed in the hydraulic system by bolts or welding, the front of the valve body 1 is slidably connected with the movable valve core 11, the movable valve core 11 controls the flow direction and flow of hydraulic oil, allows hydraulic oil to flow from one direction into the valve body 1, prevents reverse flow, and adjusts the initial flow, the rear of the movable valve core 11 is slidably connected with the choke 12, the rear of the choke 12 is connected with the spring one 13, the choke 12 cooperates with the spring one 13 to adjust the opening size of the passage in the valve body 1, the rear of the valve body 1 is slidably connected with the speed regulating valve core 14 for accurately adjusting the opening size of the passage in the valve body 1, the rear end of the spring one 13 is connected with the front end of the speed regulating valve core 14, the choke 12 adjusts the opening size of the passage in the valve body according to the movement of the speed regulating valve core 14, while providing a buffering effect to reduce impact and wear, the front end of the valve body 1 is threadedly connected with the butt joint sleeve 2, the butt joint sleeve 2 connects the valve body 1 with the external hydraulic system and filters the hydraulic oil entering the valve body 1, the front end of the butt joint sleeve 2 is embedded with a filter screen 201 to effectively filter out impurities in the hydraulic oil and ensure normal operation of subsequent components, the inside of the butt joint sleeve 2 is slidably connected with the preliminary valve core 21, the front end of the preliminary valve core 21 is provided with a three-way hole 210, the front part of the butt joint sleeve 2 is provided with a plurality of symmetrical pressure relief holes 22 in the circumferential direction, the preliminary valve core 21 can shield the pressure relief holes 22 when sliding, the preliminary valve core 21 can move forward and backward according to the change of system pressure to adjust the opening state of the pressure relief holes 22 and release excess pressure, the rear of the preliminary valve core 21 is connected with the spring two 23 to provide a buffering effect for the preliminary valve core 21, the rear of the spring two 23 extends into the front of the valve body 1, and the rear end of the spring two 23 is connected with the front end of the choke 12, the rear end of the valve body 1 is provided with a fixed sleeve 3, the rear end of the fixed sleeve 3 is provided with a motor 31, the output shaft of the motor 31 rotates through the rear part of the fixed sleeve 3, and a rotating sleeve 32 is arranged on the output shaft, the inside of the rotating sleeve 32 is slidably connected with a speed regulating screw 33, the rear part of the speed regulating screw 33 is a rod part, and the front part is a threaded part, the rod part is slidably connected with the inside of the rotating sleeve 32, and the threaded part is threadedly connected with the rear part of the valve body 1, the output shaft of the motor 31 drives the rotating sleeve 32 to rotate synchronously, so that the speed regulating screw 33 slides in the rotating sleeve 32 to adjust the position of the speed regulating valve core 14.

[0028] As shown in Figures 1-3 and Figure 5 It also includes a protective cover 5, the rear end of the reinforcing sleeve is fixed with the protective cover 5, the protective cover 5 covers the outside of the motor 31 to protect the motor 31 from the external environment.

[0029] As shown in Figures 1-3 and Figure 5As shown, the protective cover 5 rear end is symmetrically provided with wedge-shaped clamping rods 51, and the two wedge-shaped clamping rods 51 are jointly clamped with a closure cover 52, the closure cover 52 front end is in close contact with the protective cover 5 rear end, to ensure that the closure cover 52 is stably fixed on the protective cover 5 rear end.

[0030] As shown in Figures 1-3 and Figure 5 Also includes a controller 4 and control screen 41, the protective cover 5 rear end is provided with a controller 4, the controller 4 controls the operation of each power component, the closure cover 52 covers the outside of the controller 4, the fixed sleeve 3 is externally provided with a control screen 41, the control screen 41 and the controller 4 and the motor 31 are electrically connected.

[0031] As shown in Figure 1 and Figure 2 Also includes a flow monitor 6, the flow monitor 6 is installed at the front end of the butt joint sleeve 2, the controller 4 can determine whether the current flow meets the set value according to the data of the flow monitor 6, and further adjust the speed and direction of the motor 31, fine-tune the position of the speed regulating valve core 14, so that the flow returns to the set range.

[0032] As shown in Figures 1-4 , Figure 6 and Figure 7 Also includes a sealing ring one 7 and a sealing ring two 71, the valve body 1 and the butt joint sleeve 2 are externally provided with a sealing ring one 7, to ensure that the connection between the valve body 1 and the butt joint sleeve 2 is tight, the movable valve core 11, the speed regulating valve core 14 and the preliminary valve core 21 are externally provided with a sealing ring two 71, to ensure that each valve core will not leak during sliding, and to improve the sealing performance of the system.

[0033] As shown in Figure 5 Also includes a reinforcing pad 8, the reinforcing pad 8 is installed in the rear part of the fixed sleeve 3, and the reinforcing pad 8 is rotatably connected with the rotating shaft of the rotating sleeve 32 and the output shaft of the motor 31, to ensure smooth operation of the equipment.

[0034] When it is necessary to control the flow in the hydraulic system, the operator issues instructions through the operation screen 41, the controller 4 receives and processes these instructions, starts the motor 31, and the motor 31 drives the rotating sleeve 32 on the output shaft to rotate synchronously. Since the threaded part of the speed regulating screw 33 is screwed with the rear part in the valve body 1, when the rotating sleeve 32 rotates, the speed regulating screw 33 will slide inside the rotating sleeve 32 and move forward or backward at the same time, adjusting the position of the speed regulating spool 14. The speed regulating spool 14 moves forward and backward according to the movement of the speed regulating screw 33, changes the opening size of the passage in the valve body 1, thereby realizing flow regulation. The hydraulic oil enters the valve body 1 through the filter screen 201 at the front end of the docking sleeve 2 and the three-way hole 210 of the preliminary spool 21. The filter screen 201 can effectively filter out impurities in the hydraulic oil, ensuring the normal work of the subsequent components. In order to ensure the accuracy of flow regulation, after the hydraulic oil enters the valve body 1, it first passes through the movable valve core 11. The movable valve core 11 moves forward and backward according to the instructions issued by the controller 4 or the change of system pressure, adjusts the opening size of the passage in the valve body 1, thereby realizing the regulation of the initial flow. The flow monitor 6 is installed at the front end of the docking sleeve 2, which monitors the flow data passing through the valve body 1 in real time and transmits the data to the controller 4. The controller 4 judges whether the current flow meets the set value according to the data of the flow monitor 6. If the flow deviates from the set value, the controller 4 will further adjust the speed and direction of the motor 31, fine-tune the position of the speed regulating spool 14, so that the flow returns to the set range. When the pressure in the valve body 1 changes, the preliminary spool 21 will move forward and backward according to the change of pressure. The preliminary spool 21 is connected with the flow resistance piece 12 through the spring 2, which can quickly respond when the pressure fluctuates, reducing the impact of pressure shock on the system. The docking sleeve 2 has a plurality of symmetrical pressure relief holes 22 along the circumference. These pressure relief holes 22 can release part of the pressure during the movement of the preliminary spool 21, preventing the system from being damaged due to excessive pressure. When the speed regulating spool 14 moves, the flow resistance piece 12 will move with it, adjusting the opening size of the passage in the valve body 1. The spring 1 3 can provide a buffering effect during the movement of the speed regulating spool 14, avoiding impact and wear caused by rapid movement, prolonging the service life of the equipment. In order to ensure the safety and stability of the equipment, the protective cover 5 is fixed at the rear end of the fixed sleeve 3, covering the outside of the motor 31, preventing dust and moisture from entering the motor 31 and affecting its normal work. The closure cover 52 is clamped on the wedge-shaped clamping rod 51 at the rear end of the protective cover 5, covering the outside of the controller 4 and protecting the controller 4 from the external environment. The valve body 1 and the docking sleeve 2 are both sleeved with a sealing ring 1 7, ensuring the tight connection between the valve body 1 and the docking sleeve 2 and preventing hydraulic oil leakage. The movable valve core 11, the speed regulating spool 14 and the preliminary spool 21 are all sleeved with a sealing ring 2 71, ensuring that each valve core will not leak during sliding.

[0035] The above-described embodiments only express the preferred embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications, improvements and substitutions can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A cartridge valve having a unidirectional speed regulation function, characterized by, The utility model provides a valve, including valve body (1), the front part sliding connection has movable valve element (11) in valve body (1), movable valve element (11) rear part sliding connection has choke (12) in, the spring one (13) is connected to the rear part of choke (12), the rear end of spring one (13) is connected with the front end of speed regulating valve element (14), the front end screw connection has butt joint sleeve (2) in valve body (1), the embedded filter screen (201) of being provided with of butt joint sleeve (2) front end, the preliminary valve element (21) is connected inside butt joint sleeve (2) and slides, preliminary valve element (21) front end is opened three -way hole (210), butt joint sleeve (2) front part is opened a plurality of symmetrical pressure relief hole (22) along the circumference, preliminary valve element (21) can shield pressure relief hole (22) when sliding, preliminary valve element (21) rear part is connected with spring two (23) in, spring two (23) rear part is inserted into the front part of valve body (1), and spring two (23) rear end is connected with the front end of choke (12), the rear end of valve body (1) is installed fixed sleeve (3), fixed sleeve (3) rear end is installed motor (31), the output shaft of motor (31) rotates and penetrates fixed sleeve (3) rear part, and the output shaft is provided with rotating sleeve (32), rotating sleeve (32) inside sliding connection has speed regulating screw (33), the rear part of speed regulating screw (33) is rod, and its front part is screw part, the rod is connected with rotating sleeve (32) inside sliding, and the screw part is connected with the rear part of valve body (1) in screw.

2. The insertion valve with a unidirectional speed regulation function according to claim 1, characterized in that, It also includes a protective cover (5), the rear end of the reinforcing sleeve is fixed with the protective cover (5), and the protective cover (5) covers the outside of the motor (31).

3. The insertion valve with a unidirectional speed regulation function according to claim 2, characterized in that, It also includes wedge-shaped clamping rods (51) and a closure cover (52), the rear end of the protective cover (5) is symmetrically provided with wedge-shaped clamping rods (51), and the two wedge-shaped clamping rods (51) are jointly clamped with the closure cover (52), and the front end of the closure cover (52) is in close contact with the rear end of the protective cover (5).

4. The insertion valve with a unidirectional speed regulation function according to claim 3, characterized in that, It also includes a controller (4) and a control screen (41), the rear end of the protective cover (5) is installed with the controller (4), the closure cover (52) covers the outside of the controller (4), and the outside of the fixed sleeve (3) is installed with the control screen (41), and the control screen (41) is electrically connected with the controller (4) and the motor (31).

5. The insertion valve with a unidirectional speed regulation function according to claim 4, characterized in that, It also includes a flow monitor (6), and the front end of the butt joint sleeve (2) is installed with the flow monitor (6).

6. The insertion valve with a unidirectional speed regulation function according to claim 5, characterized in that, It also includes a sealing ring one (7) and a sealing ring two (71), and the outside of the valve body (1) and the butt joint sleeve (2) is sleeved with the sealing ring one (7), and the outside of the movable valve element (11), the speed regulating valve element (14) and the preliminary valve element (21) is sleeved with the sealing ring two (71).

7. The insertion valve with a unidirectional speed regulation function according to claim 6, characterized in that, It also includes a reinforcing pad (8), and the rear part of the fixed sleeve (3) is installed with the reinforcing pad (8), and the reinforcing pad (8) is rotatably connected with the rotating shaft of the rotating sleeve (32) and the output shaft of the motor (31).

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