Pulsator spring compensation transmission structure

Abstract

The utility model relates to mechanical seal technical field, concretely relates to a pulsator spring compensation transmission structure, including the casing, the rotating plug joint has the pivot in the casing, the pivot outside is provided with the shaft sleeve, the pivot outside sleeve joint has the movable ring plug, be provided with the sawtooth for engaging the shaft sleeve on the movable ring plug, still be provided with a plurality of inclined paddles on the movable ring plug, the spring seat is fixedly sleeved outside the shaft sleeve, the pulsator spring is arranged in the spring seat, the top surface of pulsator spring is provided with the push ring, and the push ring is provided with the compensation ring through a plurality of boss cooperation butt joint groove setting, the utility model provides the evenness of pulsator spring and the transmission mode of the even butt joint of boss and groove provide the even and sufficient rotating force for the compensation ring simultaneously, avoid the breakage of uneven force of compensation ring, realize the dynamic control of the movement of liquid in the shaft seal gap through the movable ring plug and its inclined paddle according to pressure variable position and rotating state, guarantee the stability of sealing.

Claims

1. A pulsator spring-compensated transmission structure, comprising a housing (100), characterized in that, A rotating shaft (200) is rotatably inserted into the housing (100). A stationary ring (300) is fixedly disposed on the top surface of the housing (100). A bushing (210) is fixedly sleeved on the outside of the rotating shaft (200). A movable ring plug (220) for dynamically resisting the pressure of the high-pressure side fluid is rotatably and slidably sleeved on the outside of the rotating shaft (200) below the bushing (210). A spring seat (400) in the shape of a ring is fixedly sleeved on the outside of the bushing (210). The spring seat (400) includes a thick ring in the lower part and an upper part. A thin ring is perpendicular to the top surface of the thick ring. A pulsator spring (500) is fixedly installed on the top surface of the thick ring. A push ring (510) is fixedly installed on the top surface of the pulsator spring (500). Several protrusions (511) are fixedly installed on the top surface of the push ring (510) in a circular shape. A compensation ring (520) is rotatably sleeved between the bushing (210) and the thin ring. Several grooves (521) are opened on the bottom surface of the compensation ring (520) in a circular shape. The protrusions (511) and the grooves (521) are engaged and connected vertically.

2. The impeller spring compensation transmission structure according to claim 1, characterized in that, The bushing (210) is fitted with a first O-ring (212); the rotating shaft (200), the stationary ring (300), the spring seat (400), the impeller spring (500), the push ring (510), and the compensation ring (520) are all on the same axis; the outer diameter of the impeller spring (500) is less than or equal to the inner diameter of the thin ring of the spring seat (400).

3. The impeller spring compensation transmission structure according to claim 1, characterized in that, A shaft seal cover (110) is fixedly provided on the top surface of the housing (100), and the movable ring plug (220) is located in the movable cavity (101). The lower edge of the bushing (210) is provided with a circumferentially arranged end face triangular tooth (211) for transmission; the upper edge of the movable ring plug (220) is provided with a sawtooth that matches the end face triangular tooth (211); a second O-ring (223) is fixedly sleeved inside the movable ring plug (220); a third O-ring (224) is fixedly sleeved outside the movable ring plug (220); an annular convex edge (221) is provided at the annular lower edge of the movable ring plug (220); and several oblique blades (222) are vertically fixed in a circumferential manner on the inner and outer walls of the annular convex edge (221).

4. The impeller spring compensation transmission structure according to claim 3, characterized in that, The movable cavity (101) is cylindrical, and the end face triangular tooth (211) is located at the upper part of the movable cavity (101); the inner edge of the second O-ring (223) is tightly fitted with the outside of the rotating shaft (200), and the third O-ring (224) is tightly fitted with the inner wall of the movable cavity (101); the difference between the inner height of the movable cavity (101) and the length of the movable ring plug (220) is greater than or equal to the length of the end face triangular tooth (211), and the movable ring plug (220) will not detach from the movable cavity (101).

5. The impeller spring compensation transmission structure according to claim 1, characterized in that, A fourth O-ring (301) is fitted between the outside of the stationary ring (300) and the housing (100); the bottom surface of the stationary ring (300) is in contact with the top surface of the compensation ring (520).

6. The impeller spring compensation transmission structure according to claim 1, characterized in that, The thick ring of the lower part of the spring seat (400) is fixedly sleeved on the outside of the bushing (210) by a number of cross bolts (401), and all the cross bolts (401) are evenly distributed in a circular pattern; an annular groove is opened on the outside of the spring seat (400) at the cross bolts (401), and a clamping ring (410) for clamping all the cross bolts (401) is sleeved in the annular groove.

7. The impeller spring compensation transmission structure according to claim 1, characterized in that, The bushing (210) and the rotating shaft (200) are interference fit, and the top of the bushing (210) is higher than the top of the compensation ring (520); the contact position between the push ring (510) and the compensation ring (520) is lower than the height of the upper edge of the spring seat (400).

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