Slurry pump sealing assembly

Abstract

The utility model discloses a mud pump sealing assembly which comprises an extension flange seat installed on a sludge pump body, an external pipe flange plate is installed at the end, away from the sludge pump body, of the extension flange seat, a stepped cavity is formed in the right end of the extension flange seat, and a stepped sealing ring is installed in an inner cavity of the stepped cavity. According to the utility model, the stepped sealing ring is plugged into the inner cavity of the stepped cavity, then the sealing ring is plugged into the inner cavity of the mounting cavity, the flange plate of the external pipe is taken up to cover the end part of the extended flange seat, and the flange plate of the external pipe is tensioned to be attached to the extended flange seat through the positioning of the positioning and tensioning assembly; at the moment, the extended flange seat is aligned with the screw hole in the flange plate of the external pipe, and then a screw penetrates through the screw hole in the extended flange seat and the screw hole in the flange plate of the external pipe for fastening, so that the double-layer sealing ring can be used for sealing, the sealing effect is improved, and the two flange plates are butted through the tensioning structure for positioning and hole alignment. And the mounting convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of slurry pump, especially, relate to a slurry pump sealing assembly. BACKGROUND

[0002] The commonly used slurry pump is piston type or plunger type, the crankshaft of the pump is rotated by the power machine, the crankshaft drives the piston or plunger to make reciprocating motion in the pump cylinder through the cross head, under the alternating action of suction and discharge valves, the purpose of pressure sending and circulating flushing fluid is realized.

[0003] The flange plates are generally only provided with one sealing ring between two flange plates, and the installation process is prone to cause the dislocation of the sealing ring during the screw hole installation of the two flange plates, and the installation is relatively inconvenient, in order to improve the sealing effect and the installation convenience, a slurry pump sealing assembly is designed, double-layer sealing rings are used for sealing, the sealing effect is improved, and the installation convenience is improved by positioning and hole aligning of the two flange plates through the tensioning structure. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a kind of slurry pump sealing assemblies, with double-layer sealing ring is sealed, improve sealing effect, and the advantage that two flange plates are positioned and hole aligned by tensioning structure for docking, improve installation convenience, to solve the above background technical problem.

[0005] The technical scheme that the utility model solves above-mentioned technical problem is as follows: a kind of slurry pump sealing assembly, it includes the extension flange seat installed on sludge pump body, the extension flange seat is installed with outer connection pipe flange plate at the end away from sludge pump body, the right end of the extension flange seat is equipped with ladder cavity, the inner cavity of the ladder cavity is installed with ladder type sealing ring, the right end of the extension flange seat is equipped with installation cavity located outside ladder cavity, the inner cavity of the installation cavity is installed with sealing ring, the right side of the sealing ring extends to the outside of the extension flange seat, the left side of the outer connection pipe flange plate is equipped with the sealing cavity compatible with sealing ring, the surface between the extension flange seat and outer connection pipe flange plate is provided with two symmetrical positioning tensioning components, the positioning tensioning component includes the fixed lug welded on the surface of the extension flange seat, the surface of the fixed lug is rotatably connected with rotating block by pivot, one side of the rotating block is provided with movable hanging plate, the hanging plate is hung on outer connection pipe flange plate.

[0006] Preferably, one side of the rotating block is rotatably connected with threaded tube, the inner cavity of the threaded tube is threadedly connected with threaded rod, one end of the threaded rod extends to the outside of the threaded tube and is fixedly connected with the hanging plate.

[0007] Preferably, one side of the outer connection pipe flange plate is equipped with two symmetrical positioning cavities, and the positioning cavities are compatible with the hanging plate.

[0008] Preferably, the flange plate of the external connecting pipe is fixedly connected with a convex ring I close to one side of the extended flange seat, and the convex ring I is matched with the stepped sealing ring.

[0009] Preferably, the sealing cavity is fixedly connected with a convex ring II on one side, and the convex ring II is matched with the sealing ring.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1. The utility model discloses a stepped sealing ring is inserted into the inner cavity of the stepped cavity, then a sealing ring is inserted into the inner cavity of the installation cavity, the flange plate of the external connecting pipe is covered on the end of the extended flange seat, the flange plate of the external connecting pipe is pulled tight and combined with the extended flange seat through the positioning of the positioning and tensioning assembly, at this time, the screw holes on the extended flange seat and the flange plate of the external connecting pipe are aligned, then according to the screw holes on the extended flange seat and the flange plate of the external connecting pipe, screws are fastened, so that double-layer sealing rings are used for sealing, the sealing effect is improved, and the positioning and hole alignment of the butt joint of the two flange plates are realized through the tensioning structure, so that the installation convenience is improved.

[0012] 2. The utility model discloses the cooperation of the convex ring I and the convex ring II, the convex ring I is extruded on the stepped sealing ring in the process that the flange plate of the external connecting pipe is pulled tight with the extended flange seat, so that the stepped sealing ring is deformed, the sealing effect of the stepped sealing ring is improved, the convex ring II of the inner cavity of the sealing cavity is extruded on the sealing ring, the sealing ring is also extruded and deformed, and the sealing effect of the sealing ring is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or other aspects of the utility model will become more apparent and more readily appreciated through consideration of the following detailed description, taken in conjunction with the accompanying drawings, which are merely illustrative and are not intended to limit the scope of the utility model, wherein:

[0014] Fig. 1 It is a three-dimensional schematic view of one embodiment of the utility model;

[0015] Fig. 2 It is a three-dimensional split schematic view of the extended flange seat and the flange plate of the external connecting pipe of one embodiment of the utility model;

[0016] Fig. 3 It is another three-dimensional split schematic view of the extended flange seat and the flange plate of the external connecting pipe of one embodiment of the utility model.

[0017] In the drawings, the component list represented by each sign is as follows:

[0018] 1, sludge pump body, 2, extension flange seat, 3, external pipe flange plate, 4, stepped cavity, 5, stepped sealing ring, 6, installation cavity, 7, sealing ring, 8, convex ring one, 9, sealing cavity, 10, convex ring two, 11, positioning and tensioning assembly, 111, fixed lug, 112, rotating block, 113, threaded tube, 114, threaded rod, 115, hanging plate, 116, positioning cavity. DETAILED DESCRIPTION

[0019] Hereinafter, the embodiment of the slurry pump sealing assembly of the utility model will be described with reference to the drawings.

[0020] Figs. 1-3 The slurry pump sealing assembly of one embodiment of the utility model is shown, which comprises an extension flange seat 2 installed on a sludge pump body 1, an external pipe flange plate 3 installed at one end of the extension flange seat 2 away from the sludge pump body 1, a stepped cavity 4 opened at the right end of the extension flange seat 2, a stepped sealing ring 5 installed in the inner cavity of the stepped cavity 4, an installation cavity 6 opened at the right end of the extension flange seat 2 outside the stepped cavity 4, a sealing ring 7 installed in the inner cavity of the installation cavity 6, the right side of the sealing ring 7 extending to the outside of the extension flange seat 2, a sealing cavity 9 opened at the left side of the external pipe flange plate 3 and matched with the sealing ring 7, a convex ring one 8 fixedly connected to one side of the external pipe flange plate 3 close to the extension flange seat 2 and matched with the stepped sealing ring 5, a convex ring two 10 fixedly connected to one side of the inner cavity of the sealing cavity 9 and matched with the sealing ring 7, the convex ring one 8 and the convex ring two 10 being used in cooperation, the convex ring one 8 being extruded on the stepped sealing ring 5 in the process of tensioning the external pipe flange plate 3 with the extension flange seat 2, so that the stepped sealing ring 5 is deformed, the sealing effect of the stepped sealing ring 5 is improved, the convex ring two 10 of the inner cavity of the sealing cavity 9 is extruded on the sealing ring 7, the sealing ring 7 is also extruded and deformed, and the sealing effect of the sealing ring 7 is further improved, two symmetrical positioning and tensioning assemblies 11 being arranged between the surface of the extension flange seat 2 and the external pipe flange plate 3, the positioning and tensioning assembly 11 comprising a fixed lug 111 welded to the surface of the extension flange seat 2, a rotating block 112 rotatably connected to the surface of the fixed lug 111 through a rotating shaft, a movable hanging plate 115 arranged at one side of the rotating block 112 and hung on the external pipe flange plate 3, a threaded tube 113 rotatably connected to one side of the rotating block 112, a threaded rod 114 threadedly connected in the inner cavity of the threaded tube 113, one end of the threaded rod 114 extending to the outside of the threaded tube 113 and fixedly connected with the hanging plate 115, two symmetrical positioning cavities 116 opened at one side of the external pipe flange plate 3 and matched with the hanging plate 115.

[0021] Working principle: the utility model for use, the stepped sealing ring 5 is inserted into the inner cavity of the stepped cavity 4, then the sealing ring 7 is inserted into the inner cavity of the installation cavity 6, picks up the outer connecting pipe flange plate 3, makes the outer connecting pipe flange plate 3 and the contact surface of the extension flange base 2 fit, then overturns the rotary block 112 and rotates on the surface of the fixed lug 111, makes the hanging plate 115 be sleeved on the surface of the outer connecting pipe flange plate 3 and the extension flange base 2, then rotates the threaded tube 113, makes the threaded rod 114 move to the inner cavity of the threaded tube 113, and then drives the hanging plate 115 to move to the left, until the hanging plate 115 enters the inner cavity of the positioning cavity 116 on the outer connecting pipe flange plate 3, continues to operate the threaded tube 113 to rotate, makes the outer connecting pipe flange plate 3 and the extension flange base 2 fit, at this time, the convex ring one 8 and the convex ring two 10 on the outer connecting pipe flange plate 3 respectively extrude the stepped sealing ring 5 and the sealing ring 7, improve the sealing effect, at this time, the screw hole on the extension flange base 2 and the outer connecting pipe flange plate 3 align, and the screw is convenient to install.

[0022] In conclusion: the sealing assembly of the mud pump, by the stepped sealing ring 5 is inserted into the inner cavity of the stepped cavity 4, then the sealing ring 7 is inserted into the inner cavity of the installation cavity 6, picks up the outer connecting pipe flange plate 3 and covers the end of the extension flange base 2, by the positioning of the positioning tensioning assembly 11, the outer connecting pipe flange plate 3 is pulled and combined with the extension flange base 2, at this time, the screw hole on the extension flange base 2 and the outer connecting pipe flange plate 3 align, then according to the screw hole on the extension flange base 2 and the outer connecting pipe flange plate 3, screw fastening is carried out, that is, the double-layer sealing ring is used for sealing, the sealing effect is improved, and the two flanges are positioned and aligned by the tensioning structure, the installation convenience is improved.

Claims

1. A mud pump sealing assembly, characterized in that, The system includes an extension flange seat (2) mounted on a sludge pump body (1). An external pipe flange (3) is installed at the end of the extension flange seat (2) furthest from the sludge pump body (1). A stepped cavity (4) is formed at the right end of the extension flange seat (2). A stepped sealing ring (5) is installed inside the stepped cavity (4). An installation cavity (6) located outside the stepped cavity (4) is formed at the right end of the extension flange seat (2). A sealing ring (7) is installed inside the installation cavity (6). The right side of the sealing ring (7) extends to the outside of the extension flange seat (2). The external pipe flange... A sealing cavity (9) adapted to the sealing ring (7) is provided on the left side of the flange (3). Two symmetrical positioning and tightening assemblies (11) are provided between the surface of the extension flange seat (2) and the outer pipe flange (3). The positioning and tightening assembly (11) includes a fixing ear (111) welded to the surface of the extension flange seat (2). The surface of the fixing ear (111) is rotatably connected to a rotating block (112) via a rotating shaft. A movable hanging plate (115) is provided on one side of the rotating block (112). The hanging plate (115) is hung on the outer pipe flange (3).

2. The mud pump sealing assembly according to claim 1, characterized in that, A threaded tube (113) is rotatably connected to one side of the rotating block (112), and a threaded rod (114) is threadedly connected to the inner cavity of the threaded tube (113). One end of the threaded rod (114) extends to the outside of the threaded tube (113) and is fixedly connected to the hanging plate (115).

3. A mud pump sealing assembly according to claim 2, characterized in that, Two symmetrical positioning cavities (116) are provided on one side of the external pipe flange (3), and the positioning cavities (116) are adapted to the hanging plate (115).

4. A mud pump sealing assembly according to claim 3, characterized in that, The outer flange (3) is fixedly connected to a convex ring (8) on the side near the extension flange seat (2), and the convex ring (8) is adapted to the stepped sealing ring (5).

5. A mud pump sealing assembly according to claim 4, characterized in that, A second protruding ring (10) is fixedly connected to one side of the inner cavity of the sealing cavity (9), and the second protruding ring (10) is adapted to the sealing ring (7).

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