一种可快速更换的分体式螺杆泵护套

Abstract

本实用新型涉及螺杆泵护套技术领域，且公开了一种可快速更换的分体式螺杆泵护套；本新型方案，包括金属外套管，所述金属外套管的内部设置有橡胶内衬，所述橡胶内衬的外侧壁均匀开设有T型限位槽，所述金属外套管的内侧壁均匀设置有T型限位条；本实用新型通过压环和限位环对金属外套管内的橡胶内衬进行轴向限位，然后通过定位套管、定位柱和T型限位条对金属外套管内橡胶内衬进行三重周向限位，以此保证橡胶内衬在金属外套管内安装稳定性，进而保证整个螺杆泵护套的使用可靠性，通过将防松十字螺栓旋下并将压环取下后，便可将橡胶内衬从金属外套管内进行快速抽出更换，以此使整个螺杆泵护套中的金属部件可以被循环使用。

Claims

1. A quick-change split screw pump liner, characterized by, The device includes a metal outer tube (1), the inside of which is provided with a rubber liner (11). T-shaped limiting grooves are evenly distributed on the outer side wall of the rubber liner (11). T-shaped limiting strips (18) are evenly distributed on the inner side wall of the metal outer tube (1), and the T-shaped limiting strips (18) are disposed within the T-shaped limiting grooves. A first annular groove is formed at the top of the metal outer tube (1). A positioning ring (15) is sleeved on the outer side of the rubber liner (11), and the positioning ring (15) is disposed within the first annular groove. The inner side wall of the metal outer tube (1)... A limiting ring (14) is provided at the bottom. A second annular groove is provided at the bottom of the rubber liner (11). The limiting ring (14) is located in the second annular groove. A positioning post (17) is connected between the limiting ring (14) and the bottom of the rubber liner (11). A pressure ring (12) is provided at the top of the positioning ring (15) and the metal outer sleeve (1). A positioning sleeve (16) is connected between the pressure ring (12) and the positioning ring (15). An anti-loosening cross bolt (13) is connected between the pressure ring (12), the positioning sleeve (16), and the metal outer sleeve (1).

2. A quick-change split screw pump liner according to claim 1, characterized in that: The positioning pins (17) are evenly arranged on the top of the limiting ring (14), and the top of the inner sidewall of the second annular groove of the metal outer sleeve (1) is evenly provided with a first positioning hole, and the positioning pins (17) are inserted into the first positioning hole.

3. A quick-change split screw pump liner according to claim 1, characterized in that: The positioning sleeve (16) is evenly arranged at the bottom of the pressure ring (12), the top of the pressure ring (12) is evenly provided with a countersunk hole, the top of the positioning ring (15) is evenly provided with a second positioning hole, and the bottom of the inner sidewall of the first annular groove is evenly provided with a threaded hole.

4. A quick-change split screw pump liner according to claim 3, characterized in that: The positioning sleeve (16) is inserted into the second positioning hole, and the anti-loosening cross bolt (13) is set in the countersunk hole. The anti-loosening cross bolt (13) passes through the positioning sleeve (16) and is screwed into the threaded hole.

5. A quick-change split screw pump liner according to claim 4, characterized in that: The T-shaped limiting groove penetrates the bottom of the rubber liner (11), the pressure ring (12) is sleeved on the top outside of the rubber liner (11), the bottom of the rubber liner (11) is flush with the bottom of the metal outer tube (1) and the limiting ring (14), and the top of the rubber liner (11) is flush with the top of the pressure ring (12) and the anti-loosening cross bolt (13).

6. A quick-change split screw pump liner according to claim 5, characterized in that: The rubber liner (11) and the positioning ring (15) are integrally molded. The metal outer sleeve (1), the T-shaped limiting strip (18), the positioning post (17) and the limiting ring (14) are integrally molded. The pressure ring (12) and the positioning sleeve (16) are integrally molded.

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