CN204372282U - Heavy caliber low voltage difference solenoid valve - Google Patents

Abstract

The utility model discloses a large-diameter low-pressure differential solenoid valve, which comprises a valve body and a valve cover. The valve body is provided with a valve body flow channel, and a valve core assembly is arranged in the valve body flow channel. The valve core assembly is installed on a valve stem. The valve stem is connected with a motor and a reducer. The reducer includes a reduction box and a gear transmission assembly. The reduction box is fixed on the valve cover. The gear transmission assembly includes an eccentric gear. The eccentric gear is fixed outside the valve stem. The end of the eccentric gear is threadedly connected with the end of the valve stem. There are also connecting columns on both sides of the eccentric gear. The ends of the connecting columns are fixed on the connecting block by connecting springs. There is also a The electromagnetic assembly includes a coil support wound with an electromagnetic coil, a moving armature is arranged in the coil support, and one end of the moving armature faces the valve stem. The utility model has the advantages of low energy consumption and energy saving, and the electromagnetic component is installed between the reducer and the valve cover, the assembly is compact, and the installation space is effectively utilized.

Description

Large diameter low pressure differential solenoid valve

technical field

The utility model belongs to the technical field of valves, in particular to a large-diameter low-pressure differential electromagnetic valve.

Background technique

The differential pressure valve in the prior art usually includes a valve body, a valve cover, a valve core and a return spring. The valve body is provided with a valve body flow channel, and the valve core extends out of the valve body through the valve stem to connect to the operating mechanism. And the reducer to drive the spool to open or close the flow channel of the valve body, and it is always in the energized state during the operation, which consumes a lot of power and costs high. This structure uses a motor combined with electromagnetic force to drive the movement of the spool, which can save electricity and reduce consumption. At the same time, it can achieve the emergency cut-off function of shutting off when the power is off.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a large-diameter low-pressure differential solenoid valve, which has the advantages of energy saving, compact structure, and emergency cut-off when power is off.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a large-diameter low-pressure differential solenoid valve, including a valve body and a valve cover, the valve body is provided with a valve body flow channel, and a valve core assembly is provided in the valve body flow channel. The valve core assembly is installed on the valve stem, and the other end of the valve stem protrudes out of the valve body and is connected with a motor and a reducer. On the cover, the gear transmission assembly includes a pinion, an intermediate gear, a cascade gear, a sliding gear and an eccentric gear. The shifting gear is located between the cascade gear and the eccentric gear and meshes with the cascade gear and the eccentric gear respectively. The eccentric gear is fixed at the end of the valve stem protruding from the valve body. The eccentric gear is screwed to the end of the valve stem. Both sides of the eccentric gear are also provided with connecting posts respectively, and the ends of the connecting posts are fixed on the connecting block through connecting springs. An electromagnetic assembly is also provided between the reducer and the valve cover, and the electromagnetic assembly includes a coil wound with an electromagnetic coil. A bracket, a moving armature is arranged in the coil bracket, and one end of the moving armature faces the valve stem.

In the above structure, the motor outputs power to the valve stem through the reducer, so that the valve stem rises or falls along its axial direction, and drives the valve core assembly to conduct or close the flow channel of the valve body. The above reducer is connected to the motor through a pinion, and through The gear transmission assembly transmits the power to the eccentric gear. When the eccentric gear moves to the left or right, it will press against the left or right connecting column respectively, and the connecting column is pressed against the connecting spring. The connecting block It can be connected to an external circuit, and the state of the valve can be detected by detecting the level. It can detect whether the opening and closing of the valve is in place. When the valve is opened in place, the reducer is disconnected, the motor is powered off, and the valve stem and valve are maintained by the electromagnetic component. In the open position of the spool assembly, when the electromagnetic assembly is powered off, the spool assembly quickly falls to close the flow passage of the valve body. This structure has the advantages of low energy consumption and energy saving, and the electromagnetic assembly is installed between the reducer and the valve cover, and the assembly is compact. , Effective use of installation space.

As a further setting of the utility model, the reduction box body is fixed on the valve cover through the column, the electromagnetic assembly is installed in the electromagnetic housing, and one end of the electromagnetic housing is fixed on the valve cover through the mounting plate, and the electromagnetic The housing is located in the gap between the uprights.

In the above structure, the speed reducer is installed on the valve cover through the uprights, supported by four corners, and the structure is stable, and the electromagnetic housing is installed between the uprights, so the structure is compact.

As a further setting of the present utility model, the valve body flow channel includes an inlet channel and an outlet channel, and there is a communication channel between the inlet channel and the outlet channel, and the valve core assembly is located in the communication channel, and the communication channel and the inlet channel The caliber of the connection is adapted to the valve core assembly, and the communication port at the connection is coaxially arranged with the valve stem, and the valve core assembly is in sealing fit with the inner wall of the communication port.

In the above structure, the flow channel of the valve body mainly cooperates with the valve core assembly through the communication channel. When the fluid enters the fluid channel, it impacts on the inner wall of the inlet channel, which can reduce the direct impact of the fluid on the valve core assembly and reduce the impact on the valve core assembly. loss.

As a further setting of the utility model, the valve core assembly includes a valve core and a buffer spring, and one end of the valve stem located in the flow channel of the valve body is connected with a sleeve, and the buffer spring is located in the sleeve, and the opening at one end of the sleeve is in contact with the valve body. The valve rod is sealed and connected, and the other end opening of the sleeve body is sealed with a valve core column, and one end of the valve core column protruding from the sleeve body is fixedly connected with the valve core.

In the above structure, the buffer spring is located in the sleeve body, and both ends of the sleeve body are sealed, so that a closed space is formed inside the sleeve body, which can reduce the corrosion of the buffer spring caused by fluid flowing into the sleeve body, and the structure is simple and easy to design.

As a further setting of the present utility model, a limit block is provided at the end of the valve stem connected to the sleeve body, the limit block is located in the sleeve body, the limit block is fixedly connected with the buffer spring, and the sleeve body and the sleeve body are fixed. A sealing ring is embedded in the inner wall of the opening of one end of the valve stem. The end of the valve core column located in the sleeve has an enlarged end that matches the inner diameter of the sleeve, and the connection between the end and the valve core column forms an annular groove. , a rubber sleeve sealingly connected with the inner wall of the casing is embedded in the annular groove.

In the above structure, the valve stem is attached to the inner wall of the casing through the limit block, which can keep the valve stem rising and falling stably in the axial direction at the same time as the limit block. The ends also function as mounts for the rubber boots.

As a further setting of the present utility model, the valve core includes a valve core body affixed to the valve core column, and the end of the valve core body facing the communication port is provided with a sealing body, and the structure of the sealing body is an inverted "convex" structure , the outer peripheral wall of the lower part of the sealing body is adapted to the inner diameter of the communication port, and the connecting end surfaces of the upper and lower parts of the sealing body are attached to the edge of the communication port.

In the above structure, the sealing body installed on the valve core body has a better sealing effect with the communication port in the flow channel of the valve body.

By adopting the above scheme, the utility model has the advantages of compact structure, energy saving and good sealing effect.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Accompanying drawing 1 is the structural front view of the specific embodiment of the utility model;

Accompanying drawing 2 is the structural representation of the reducer of the specific embodiment of the utility model;

Accompanying drawing 3 is the structural representation of the reducer of the specific embodiment of the utility model;

Accompanying drawing 4 is the connection structural diagram between eccentric gear and connecting column, connecting block of the specific embodiment of the utility model;

Accompanying drawing 5 is the enlarged view of part A of accompanying drawing 1 of the specific embodiment of the present invention;

Valve body 1, bonnet 11, column 111, inlet channel 21, outlet channel 22, communication channel 23, communication port 231, spool assembly 3, spool 31, spool body 311, sealing body 312, spool column 32, Expanded end 321, rubber sleeve 322, buffer spring 33, sleeve body 34, valve stem 4, limit block 41, sealing ring 42, motor 51, reducer 52, reduction box 521, pinion 522, intermediate gear 523, Cascade gear 524, sliding gear 525, eccentric gear 526, connecting column 527, connecting spring 528, connecting block 529, electromagnetic assembly 6, electromagnetic coil 61, coil support 62, moving armature 63, electromagnetic housing 64, mounting plate 641 .

Detailed ways

The specific embodiment of the utility model is shown in Fig. 1-5, which is a large-diameter low-pressure differential solenoid valve, including a valve body 1 and a valve cover 11. The valve body 1 is provided with a valve body flow channel, and a valve core assembly is provided in the valve body flow channel. 3. The valve core assembly 3 is installed on the valve stem 4. The other end of the valve stem 4 protrudes out of the valve body 1 and is connected with a motor 51 and a reducer 52. The reducer 52 includes a reduction box 521 and a gear transmission assembly. The reduction box 521 is fixed on the valve cover 11, and the gear transmission assembly includes pinion 522, intermediate gear 523, cascade gear 524, slip gear 525 and eccentric gear 526, and pinion 522 is connected synchronously with motor 51, and one side of pinion 522 is connected with The intermediate gear 523 meshes, the intermediate gear 523 meshes with the cascade gear 524, the slip gear 525 is located between the cascade gear 524 and the eccentric gear 526 and meshes with the cascade gear 524 and the eccentric gear 526 respectively, and the eccentric gear 526 is fixed on The valve stem 4 protrudes from the end of the valve body 1. The eccentric gear 526 is threadedly connected to the end of the valve stem 4. Both sides of the eccentric gear 526 are respectively provided with connecting posts 527, and the ends of the connecting posts 527 are connected by connecting springs 528. Fixed on the connection block 529, an electromagnetic assembly 6 is also provided between the reducer 52 and the valve cover 11. The electromagnetic assembly 6 includes a coil support 62 wound with an electromagnetic coil 61. The coil support 62 is provided with a moving armature 63, and the moving armature One end of 63 faces valve stem 4.

The above-mentioned motor 51 outputs power to the valve stem 4 through the reducer 52, so that the valve stem 4 rises or falls along its axial direction, and drives the valve core assembly 3 to conduct or close the flow channel of the valve body. The above-mentioned reducer 52 communicates with the motor through the pinion 522 51, and the power is transmitted to the eccentric gear 526 through the gear transmission assembly. When the eccentric gear 526 moves to the left or right, it will respectively press against the connecting column 527 on the left or right, and the connecting column 527 will squeeze On the connection spring 528, the connection block 529 can be connected to an external circuit. The connection column 527 and the connection block 529 have connection ends b, c, and d respectively, and the state of the valve can be detected by detecting the level of the valve. Whether the opening and closing of the valve is in place, when the valve is opened in place, the reducer 52 is disconnected, the motor 51 is powered off, and the open position of the valve stem 4 and the valve core assembly 3 is maintained through the electromagnetic assembly 6. When the electromagnetic assembly 6 is powered off, Then the spool assembly 3 quickly falls to close the flow channel of the valve body. This structure has the advantages of low energy consumption and energy saving, and the electromagnetic assembly 6 is installed between the reducer 52 and the valve cover 11, which is compactly assembled and effectively utilizes the installation space.

The above-mentioned reduction box body 521 is fixed on the valve cover 11 through the column 111, the electromagnetic assembly 6 is installed in the electromagnetic housing 64, and one end of the electromagnetic housing 64 is fixed on the valve cover 11 through the mounting plate 641, and the electromagnetic housing 64 It is located in the gap between the columns 111 and the columns 111 . The speed reducer 52 is installed on the valve cover 11 through the upright post 111 , supported by four corners, and has a stable structure. The electromagnetic housing 64 is installed between the upright post 111 and the upright post 111 , and has a compact structure.

The above-mentioned flow channel of the valve body includes an inlet channel 21 and an outlet channel 22. There is a communication channel 23 between the inlet channel 21 and the outlet channel 22. The valve core assembly 3 is located in the communication channel 23. The diameter of the connection between the communication channel 23 and the inlet channel 21 is It is adapted to the valve core assembly 3 , and the communication port 231 at the connection is arranged coaxially with the valve stem 4 , and the valve core assembly 3 is in sealing fit with the inner wall of the communication port 231 . The flow channel of the valve body mainly cooperates with the valve core assembly 3 through the communication channel 23. When the fluid enters the fluid channel, it impacts on the inner wall of the inlet channel 21, which can reduce the direct impact of the fluid on the valve core assembly 3 and reduce the impact on the valve core assembly 3. loss.

The above-mentioned valve core assembly 3 includes a valve core 31 and a buffer spring 33. One end of the valve stem 4 located in the flow channel of the valve body is connected with a sleeve 34, and the buffer spring 33 is located in the sleeve 34. One end opening of the sleeve 34 is connected to the valve stem 4. Sealed connection, the other end opening of the sleeve body 34 is sealingly connected with a valve core column 32 , and one end of the valve core column 32 protruding from the sleeve body 34 is fixedly connected with the valve core 31 . The buffer spring 33 is located in the sleeve body 34, and both ends of the sleeve body 34 are sealed structures, so that a closed space is formed inside the sleeve body 34, which can reduce the corrosion of the buffer spring 33 by the fluid flowing into the sleeve body 34, and the structure is simple and easy design.

One end of the valve stem 4 connected to the sleeve body 34 is provided with a limit block 41, the limit block 41 is located in the sleeve body 34, the limit block 41 is fixedly connected with the buffer spring 33, and the end of the sleeve body 34 matched with the valve stem 4 is open. The inner wall is embedded with a sealing ring 42, and the end of the valve core column 32 located in the sleeve body 34 has an enlarged end portion 321 that matches the inner diameter of the sleeve body 34, and the connection between the end portion 321 and the valve core column 32 forms an annular groove. A rubber sleeve 322 sealingly connected with the inner wall of the sleeve body 34 is embedded in the annular groove. The valve stem 4 is attached to the inner wall of the casing 34 through the limit block 41, which can keep the valve stem 4 axially rising and falling stably while acting as a limiter. The valve core post 32 is attached to the inner wall of the casing 34 through the enlarged end 321 , and its enlarged end also serves as a mounting seat for the rubber sleeve 322 .

The above-mentioned spool 31 includes a spool body 311 affixed to the spool column 32. The end of the spool body 311 facing the communication port 231 is provided with a sealing body 312. The structure of the sealing body 312 is an inverted "convex" structure. The sealing body The outer peripheral wall of the lower part of 312 is adapted to the inner diameter of the communication port 231 , and the connection end surfaces of the upper and lower parts of the sealing body 312 are bonded to the edges of the communication port 231 . The sealing body 312 installed on the valve core body 311 has a better sealing effect with the communication port 231 in the flow channel of the valve body.

The working principle of the utility model is: the motor 51 and the electromagnetic assembly 6 are energized at the same time, and the motor 51 drives the valve rod 4 through the reducer 52 to drive the valve core assembly 3 to lift. When the valve is opened in place, the eccentric gear 526 in the reducer 52, connected Column 527, connecting spring 528, and connecting block 529 form a loop. By testing the level of the connecting block 529 on both sides of the eccentric gear 526 to judge the opening status of the valve, when the position is detected, the motor 51 is powered off, and the reducer 52 Disengaged, the position of the valve stem 4 is maintained by the electromagnetic assembly 6 so that it is in the open state of the valve, which plays an energy-saving role. When the electromagnetic assembly 6 is powered off, the valve core assembly 3 quickly falls back to close the valve. The valve passes through the motor 51 and the reducer. 52 drives the spool assembly 3 to open the valve, the spool assembly 3 is kept in the open position by the electromagnetic assembly 6, and the reducer 52 can be completely unloaded and disengaged, and stops. After power failure, the electromagnetic assembly 6 resets, and the spool assembly 3 then close the valve under the action of spring force and gravity. The utility model has the advantages of compact structure, energy saving and good sealing effect. The utility model is not limited to the above-mentioned specific implementation methods, those skilled in the art can adopt various other specific implementation modes to implement the utility model according to the disclosed content of the utility model, or whoever adopts the design structure and ideas of the utility model, Do simple changes or changes, all fall into the protection scope of the present utility model.

Claims (6)

1. a heavy caliber low voltage difference solenoid valve, comprise valve body and valve gap, valve flowing channel is provided with in valve body, mangetic core assembly is provided with in valve flowing channel, mangetic core assembly is installed on valve rod, what the valve rod the other end stretched out valve body is externally connected with motor and retarder, it is characterized in that: described retarder comprises deceleration box and gear-driven assembly, deceleration box is fixedly arranged on valve gap, gear-driven assembly comprises small gear, intermediate gear, cascade gear, shifting slide gear and eccentricity gear, small gear is connected with motor in synchrony, small gear side is engaged with intermediate gear, intermediate gear is meshed with cascade gear, shifting slide gear is between cascade gear and eccentricity gear and engage with cascade gear and eccentricity gear respectively, eccentricity gear is installed in valve rod and stretches out end outside valve body, this eccentricity gear is threaded with valve stem end, the both sides of eccentricity gear are also respectively equipped with attachment post, attachment post end is fixed on contiguous block by linking springs, also electromagnetic assembly is provided with between described retarder and valve gap, electromagnetic assembly comprises the coil brace being wound with electromagnetic coil, moving armature is provided with in coil brace, one end of moving armature is towards valve rod.

2. heavy caliber low voltage difference solenoid valve according to claim 1, it is characterized in that: described deceleration box is fixedly arranged on valve gap by column, described electromagnetic assembly is arranged in electromagnetism housing, electromagnetism shell one end is installed on valve gap by mounting plate, and in this electromagnetism housing space between column and column.

3. heavy caliber low voltage difference solenoid valve according to claim 1, it is characterized in that: described valve flowing channel comprises inlet channel and outlet passage, between inlet channel and outlet passage, there is communicating passage, described mangetic core assembly is arranged in this communicating passage, the bore of described communicating passage and inlet channel joint and mangetic core assembly adaptation, and the connecting port of this joint and valve rod are coaxially arranged, mangetic core assembly coordinates with this connecting port inner wall sealing.

4. heavy caliber low voltage difference solenoid valve according to claim 3, it is characterized in that: described mangetic core assembly comprises spool, damping spring, one end that described valve rod is arranged in valve flowing channel is connected with body, damping spring is arranged in this body, the one end open of body is connected with valve stem seal, be sealedly connected with spool post in the other end opening of body, spool post stretch out one end of body and spool affixed.

5. heavy caliber low voltage difference solenoid valve according to claim 4, it is characterized in that: one end that described valve rod is connected with body is provided with limiting stopper, described limiting stopper is arranged in this body, described limiting stopper and damping spring affixed, the one end open inwall that described body coordinates with valve rod is embedded with seal ring, the end that described spool post is arranged in body has the enlarged end with body minor diameter fit, this end and spool post cylinder joint form circular groove, are embedded with the rubber sleeve be connected with body inner wall sealing in this circular groove.

6. the heavy caliber low voltage difference solenoid valve according to claim 4 or 5, it is characterized in that: described spool comprises the insert body affixed with spool post, insert body is provided with seal towards one end of described connecting port, sealing body structure is in falling " convex " shape structure, the lower, outer perimeter wall of sealing body and connecting port internal diameter adaptation, the connecting end surface connecting port edge laminating of the top and the bottom of described seal.