Partial pressure type rotary joint

Abstract

The utility model discloses a partial pressure type rotary joint, and belongs to the technical field of rotary joints. A partial pressure type rotary joint comprises a rotator provided with a liquid inlet port and a liquid outlet port on two sides respectively, and further comprises a shell communicated with the liquid inlet port of the rotator, a filter plate is inserted in the shell, a moving plate is slidably mounted in the shell, the bottom of the moving plate is connected with a scraper plate through an elastic part, and the scraper plate is connected with the liquid outlet port of the rotator. The scraping plate is tightly attached to the inclined surface of the filter plate through the elastic force of the elastic piece; according to the utility model, through the arrangement of the filter plate, liquid entering the rotator can be filtered in advance to remove impurities in the liquid and prevent the impurities from causing extra abrasion to the interior of the rotary joint, so that the abrasion to the interior of the rotary joint and related components is reduced; therefore, the use stability and the service life of the rotary joint are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joints, in particular to a pressure-dividing rotary joint. Background Art

[0002] A pressure-dividing rotary joint is a special connecting device, usually used in occasions where fluids (such as water, oil, gas, etc.) need to be transmitted between rotating parts. The design of this joint allows one part to remain stationary while the other part can rotate relative to it, while ensuring that the fluid can flow smoothly from the stationary part to the rotating part or in the reverse direction. Moreover, it can also adjust the fluid pressure passing through the joint to ensure a certain working pressure under different operating conditions and protect the system from excessive pressure shocks.

[0003] In some machine tool equipment, usually the tool or workpiece needs to rotate during the machining process. At this time, a pressure-dividing rotary joint is required to transmit liquid to the rotating part. However, in the actual use process, since the infusion pipeline and the liquid may contain solid particles, sand grains, rust products or other impurities, when the liquid flows into the rotary joint, these impurities are easily carried into the joint interior along with the liquid. The presence of impurities will cause additional friction, thereby accelerating the wear of the interior of the rotary joint and related components, thus affecting the use stability and service life of the rotary joint. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that in the current pressure-dividing rotary joint during the infusion process, the impurities in the liquid will accelerate the wear of the interior of the rotary joint and related components, thus affecting the use stability and service life of the rotary joint, and to propose a pressure-dividing rotary joint.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A pressure-dividing rotary joint includes a rotator with a liquid inlet interface and a liquid discharge interface provided on both sides respectively, and further includes: a housing connected to the liquid inlet interface of the rotator. Among them, a filter plate is inserted into the housing. A moving plate is slidably installed in the housing. The bottom of the moving plate is connected with a scraper through an elastic member. The scraper is tightly attached to the inclined surface of the filter plate by the elastic force of the elastic member. A driving part is provided on the housing for driving the scraper to slide along the inclined surface of the filter plate; a cross plate fixedly connected in the housing. Among them, an elastic rod is longitudinally slidably connected to the cross plate. A jacking part is provided on the housing for driving the elastic rod to continuously impact the filter plate. A blocking part is provided on the housing.

[0007] To drive the scraper to clean the impurities on the filter plate, preferably, the driving part includes a servo motor fixedly connected to the housing, and a screw rod is rotatably connected to the housing. Wherein, one end of the screw rod is fixedly connected to the output end of the servo motor, and the moving plate is threadedly connected to the screw rod.

[0008] To guide the moving plate, preferably, a guide rod is fixedly connected inside the housing, and the moving plate is horizontally slidably connected to the guide rod.

[0009] To make the scraper closely adhere to the inclined surface of the filter plate, preferably, the elastic member includes a pipe shell fixedly connected to the moving plate, a telescopic plate is slidably connected to the pipe shell, a first spring is fixedly installed inside the pipe shell, and the telescopic plate is fixedly connected to one end of the first spring.

[0010] To improve the cleaning effect on the filter plate, further, the jacking part includes: a top plate fixedly connected to one end of the elastic rod, wherein a second spring is sleeved on the elastic rod, and two ends of the second spring are respectively fixedly connected to the bottom surface of the cross plate and the top surface of the top plate; a rotating rod rotatably connected to the housing, wherein a pulley connected by a belt is fixedly connected to one end of the rotating rod and the surface of the screw rod respectively, and a cam is fixedly connected to the other end of the rotating rod. When the rotating rod rotates, the cam intermittently slides across the surface of the top plate.

[0011] To facilitate the discharge of the cleaned impurities, preferably, the blocking part includes an electric push rod fixedly installed on the housing, a sewage discharge port is formed on the housing, a sealing cover is inserted into the sewage discharge port, and the sealing cover is fixedly connected to the output end of the electric push rod.

[0012] Compared with the prior art, the present utility model provides a voltage-dividing rotary joint, which has the following beneficial effects:

[0013] 1. For this voltage-dividing rotary joint, through the arrangement of the filter plate, the liquid entering the rotator can be pre-filtered to remove the impurities in the liquid, prevent the impurities from causing additional wear to the inside of the rotary joint, thereby reducing the wear of the inside of the rotary joint and related components, and thus improving the use stability and service life of the rotary joint.

[0014] 2. For this voltage-dividing rotary joint, by starting the electric push rod, the output end of the electric push rod drives the sealing cover to move, and then the sealing cover is pulled out from the sewage discharge port to make the sewage discharge port in an open state. Then, by starting the servo motor, the output end of the servo motor drives the screw rod to rotate. Under the action of the thread, the scraper can be driven to clean and scrape the impurities filtered on the inclined surface of the filter plate, avoiding the blockage of the filter plate by the impurities, and thus ensuring the use effect of the filter plate and the normal transportation of the liquid.

[0015] 3. By starting the electric push rod, the voltage-dividing rotary joint can also drive the elastic rod to continuously impact the bottom of the filter plate. Under the impact force, the filter plate will vibrate, which can help loosen the impurities adhering to the inclined surface of the filter plate, causing the impurities to move along the inclined surface of the filter plate towards the sewage outlet and be discharged. This can further improve the cleaning effect of the filter plate and bring great convenience to the maintenance work of the staff.

[0016] Parts not involved in this device are the same as or can be implemented using existing technologies. The utility model solves the problem that in the current voltage-dividing rotary joint during the infusion process, impurities in the liquid will accelerate the wear of the inside of the rotary joint and related components, thereby affecting the use stability and service life of the rotary joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric structural schematic diagram of a voltage-dividing rotary joint proposed by the utility model;

[0018] Figure 2 is a partial axonometric structural schematic diagram of a voltage-dividing rotary joint proposed by the utility model Figure 1 ;

[0019] Figure 3 is a front view sectional structural schematic diagram of the housing of a voltage-dividing rotary joint proposed by the utility model;

[0020] Figure 4 is a partial sectional structural schematic diagram of a voltage-dividing rotary joint proposed by the utility model;

[0021] Figure 5 is a partial axonometric structural schematic diagram of a voltage-dividing rotary joint proposed by the utility model Figure 2 ;

[0022] Figure 6 is a sectional structural schematic diagram of the pipe shell of a voltage-dividing rotary joint proposed by the utility model;

[0023] Figure 7 is an axonometric sectional structural schematic diagram of the housing of a voltage-dividing rotary joint proposed by the utility model.

[0024] In the figure: 1. Rotator; 2. Housing; 3. Filter plate; 4. Moving plate; 41. Guide rod; 5. Scraper; 6. Pipe shell; 61. Telescopic plate; 62. First spring; 7. Servo motor; 71. Screw; 8. Cross plate; 9. Elastic rod; 91. Top plate; 92. Second spring; 93. Rotating rod; 94. Belt pulley; 95. Cam; 10. Sealing cover; 11. Sewage outlet; 12. Electric push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] Embodiment:

[0028] Referring to Figures 1-7 , an embodiment of the present utility model provides a voltage-dividing rotary joint, which includes a rotator 1 with a liquid inlet interface and a liquid discharge interface provided on both sides. The rotator 1 is a single-channel voltage-dividing rotary joint, which has only one fluid channel for single-channel liquid transmission and can also control the pressure in the channel. It further includes: a housing 2 connected to the liquid inlet interface of the rotator 1. Among them, a filter plate 3 is inserted into the housing 2, and a maintenance cover is detachably installed on the housing 2. By removing the maintenance cover, the filter plate 3 can be taken out and replaced. A moving plate 4 is slidably installed in the housing 2. The bottom of the moving plate 4 is connected to a scraper 5 through an elastic member. The scraper 5 is closely attached to the inclined surface of the filter plate 3 by the elastic force of the elastic member. A driving part is provided on the housing 2 for driving the scraper 5 to slide along the inclined surface of the filter plate 3; a cross plate 8 is fixedly connected in the housing 2. Among them, an elastic rod 9 is longitudinally slidably connected to the cross plate 8. A lifting part is provided on the housing 2 for driving the elastic rod 9 to continuously impact the bottom of the filter plate 3. The material of the elastic rod 9 is rubber, and a blocking part is provided on the housing 2.

[0029] Specifically, during use, through the setting of the filter plate 3, the liquid entering the rotator 1 can be filtered in advance to remove impurities in the liquid, preventing the impurities from causing additional wear to the inside of the rotary joint, thereby reducing the wear of the inside of the rotary joint and related components, and thus improving the use stability and service life of the rotary joint. Through the setting of the driving part, the scraper 5 can be driven to clean and scrape the impurities filtered on the inclined surface of the filter plate 3, avoiding the filter plate 3 being blocked by impurities. And through the setting of the lifting part, the elastic rod 9 can be driven to continuously impact the bottom of the filter plate 3, causing the filter plate 3 to vibrate, thereby further improving the cleaning effect on the filter plate 3.

[0030] The driving part includes a servo motor 7 fixedly connected to the housing 2 , a screw rod 71 is rotatably connected to the housing 2 , one end of the screw rod 71 is fixedly connected to the output end of the servo motor 7 , and the moving plate 4 is threadedly connected to the screw rod 71 .

[0031] Specifically, when in use, by starting the servo motor 7, the output end of the servo motor 7 drives the screw 71 to rotate, and under the action of the thread, drives the scraper 5 to slide along the inclined surface of the filter plate 3, so as to clean the impurities filtered on the inclined surface of the filter plate 3.

[0032] A guide rod 41 is fixedly connected inside the housing 2 , and the movable plate 4 is laterally slidably connected to the guide rod 41 .

[0033] Specifically, by providing the guide rod 41 , the movable plate 4 can be guided so that the movable plate 4 can only slide horizontally.

[0034] The elastic member includes a tube shell 6 fixedly connected to the moving plate 4 , a telescopic plate 61 is slidably connected to the tube shell 6 , a first spring 62 is fixedly installed in the tube shell 6 , and the telescopic plate 61 is fixedly connected to one end of the first spring 62 .

[0035] Specifically, when the scraper 5 slides along the inclined surface of the filter plate 3 , the arrangement of the tube shell 6 , the telescopic plate 61 and the first spring 62 can keep the scraper 5 always in close contact with the inclined surface of the filter plate 3 , thereby ensuring the cleaning effect of the filter plate 3 .

[0036] The lifting part includes: a top plate 91, which is fixedly connected to one end of the elastic rod 9, wherein a second spring 92 is sleeved on the elastic rod 9, and the two ends of the second spring 92 are respectively fixedly connected to the bottom surface of the cross plate 8 and the top surface of the top plate 91; a rotating rod 93, which is rotatably connected to the shell 2, wherein one end of the rotating rod 93 and the surface of the screw rod 71 are fixedly connected to a pulley 94 connected by a belt, and the other end of the rotating rod 93 is fixedly connected to a cam 95, and when the rotating rod 93 rotates, the cam 95 intermittently slides over the surface of the top plate 91.

[0037] Specifically, when in use, the screw rod 71 rotates, which also drives the pulley 94, the rotating rod 93 and the cam 95 to rotate together. When the top angle of the cam 95 contacts the surface of the top plate 91, the top plate 91 moves upward under the extrusion force of the cam 95, and drives the elastic rod 9 to hit the bottom of the filter plate 3, and compresses the second spring 92 at the same time. When the top angle of the cam 95 is separated from the surface of the top plate 91, the elastic rod 9 is quickly reset downward by the elastic force of the second spring 92. Through the continuous rotation of the cam 95, the elastic rod 9 can be driven to continuously hit the bottom of the filter plate 3. The filter plate 3 will vibrate under the impact force, so that impurities move along the inclined surface of the filter plate 3 to the sewage outlet 11, thereby further improving the cleaning effect of the filter plate 3.

[0038] The plugging part includes an electric push rod 12 fixedly installed on the housing 2. A sewage discharge port 11 is formed on the housing 2, and a sealing cover 10 is inserted into the sewage discharge port 11. The sealing cover 10 is fixedly connected to the output end of the electric push rod 12.

[0039] Specifically, when it is necessary to clean and maintain the filter plate 3, the electric push rod 12 can be started. The output end of the electric push rod 12 drives the sealing cover 10 to move, and then the sealing cover 10 is pulled out of the sewage discharge port 11, so that the sewage discharge port 11 is in an open state, which is convenient for discharging the cleaned impurities.

[0040] During the use of this partial pressure type rotary joint, first, the liquid delivery pipe of the liquid supply device is connected to the liquid inlet end at the top of the housing 2. Then, the liquid is continuously input into the housing 2 through the liquid supply device, and the liquid is filtered by the filter plate 3. The impurities following the liquid into the housing 2 are blocked on the filter plate 3, while the filtered liquid is discharged into the rotator 1 and then input into the rotating components of the machine tool equipment through the rotator 1. Through the setting of the filter plate 3, the liquid entering the rotator 1 can be pre-filtered to remove the impurities in the liquid, prevent the impurities from causing additional wear to the inside of the rotary joint, and then reduce the wear of the inside of the rotary joint and related components, thereby improving the use stability and service life of the rotary joint;

[0041] On the other hand, when it is necessary to clean and maintain the filter plate 3, the electric push rod 12 can be started. The output end of the electric push rod 12 drives the sealing cover 10 to move, and then the sealing cover 10 is pulled out of the sewage discharge port 11, so that the sewage discharge port 11 is in an open state. Then, by starting the servo motor 7, the output end of the servo motor 7 drives the screw rod 71 to rotate. Under the action of the thread, the scraper 5 is driven to slide along the inclined surface of the filter plate 3, and the impurities filtered on the inclined surface of the filter plate 3 can be cleaned and scraped off, avoiding the blockage of the filter plate 3 by the impurities, and then ensuring the use effect of the filter plate 3 and the normal delivery of the liquid;

[0042] Moreover, when the screw rod 71 rotates, it also drives the belt pulley 94, the rotating rod 93 and the cam 95 to rotate together. When the apex angle of the cam 95 contacts the surface of the top plate 91, the top plate 91 moves upward under the extrusion force of the cam 95 and drives the elastic rod 9 to impact the bottom of the filter plate 3, and at the same time compresses the second spring 92. When the apex angle of the cam 95 separates from the surface of the top plate 91, the elastic rod 9 quickly returns downward under the elastic force of the second spring 92. Through the continuous rotation of the cam 95, the elastic rod 9 can be driven to continuously impact the bottom of the filter plate 3. Under the impact force, the filter plate 3 will vibrate, which can help loosen the impurities attached to the inclined surface of the filter plate 3, so that the impurities move along the inclined surface of the filter plate 3 towards the sewage discharge port 11 and are discharged, thereby further improving the cleaning effect of the filter plate 3 and bringing great convenience to the maintenance work of the staff.

[0043] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A pressure dividing rotary joint, comprising a rotator (1) with a liquid inlet interface and a liquid discharge interface provided on both sides, characterized in that: Also includes: The housing (2) is connected to the liquid inlet interface of the rotator (1). A filter plate (3) is inserted into the housing (2), a movable plate (4) is slidably mounted in the housing (2), a scraper (5) is connected to the bottom of the movable plate (4) via an elastic member, the scraper (5) is tightly attached to the inclined surface of the filter plate (3) by the elastic force of the elastic member, and a driving part for driving the scraper (5) to slide along the inclined surface of the filter plate (3) is provided on the housing (2); The transverse plate (8) is fixedly connected in the housing (2). The transverse plate (8) is longitudinally slidably connected with an elastic rod (9), the shell (2) is provided with a lifting portion for driving the elastic rod (9) to continuously impact the filter plate (3), and the shell (2) is provided with a blocking portion.

2. A pressure dividing type rotary joint according to claim 1, characterized in that: The driving unit comprises a servo motor (7) fixedly connected to a housing (2), and a screw rod (71) is rotatably connected to the housing (2). One end of the screw rod (71) is fixedly connected to the output end of the servo motor (7), and the moving plate (4) is threadedly connected to the screw rod (71).

3. A pressure dividing type rotary joint according to claim 1, characterized in that: A guide rod (41) is fixedly connected inside the housing (2), and the movable plate (4) is laterally slidably connected to the guide rod (41).

4. A pressure dividing type rotary joint according to claim 1, characterized in that: The elastic member comprises a tube shell (6) fixedly connected to the movable plate (4), a telescopic plate (61) being slidably connected to the tube shell (6), a first spring (62) being fixedly installed in the tube shell (6), and the telescopic plate (61) being fixedly connected to one end of the first spring (62).

5. A pressure dividing type rotary joint according to claim 2, characterized in that: The lifting part comprises: A top plate (91) is fixedly connected to one end of the elastic rod (9). Wherein, a second spring (92) is sleeved on the elastic rod (9), and two ends of the second spring (92) are respectively fixedly connected to the bottom surface of the horizontal plate (8) and the top surface of the top plate (91); A rotating rod (93) is rotatably connected to the housing (2). One end of the rotating rod (93) and the surface of the screw rod (71) are fixedly connected to a pulley (94) connected by a belt, and the other end of the rotating rod (93) is fixedly connected to a cam (95). When the rotating rod (93) rotates, the cam (95) intermittently slides over the surface of the top plate (91).

6. A pressure dividing type rotary joint according to claim 1, characterized in that: The blocking portion comprises an electric push rod (12) fixedly mounted on a housing (2); a sewage outlet (11) is provided on the housing (2); a sealing cover (10) is inserted into the sewage outlet (11); and the sealing cover (10) is fixedly connected to the output end of the electric push rod (12).

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