CN215861729U

CN215861729U - Middle-open packing gland for pump

Info

Publication number: CN215861729U
Application number: CN202121310486.0U
Authority: CN
Inventors: 黄涛; 龙小平; 罗潜; 林玉华; 秦媛; 郑镇�; 郭平昌; 谢旻
Original assignee: Hubei Pump Works
Current assignee: Hubei Pump Works
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-02-18
Anticipated expiration: 2031-06-11

Abstract

A middle-open type packing gland for a pump comprises a gland main body, wherein the gland main body consists of two half gland bodies, a semicircular column is arranged on a single half gland body, a first shaft hole is formed in the middle of the semicircular column, second external threads are arranged on the outer side wall of the semicircular column, threaded holes are formed in the half gland bodies, and the two half gland bodies are connected through connecting bolts penetrating through the threaded holes; still include beaded finish and pressure material spare, the beaded finish middle part is equipped with the second shaft hole, is equipped with first external screw thread on the beaded finish lateral wall, presses the material spare main part to be the loop forming element, presses the material spare to pass the setting in beaded finish and the gland main part. By adopting the structure, the utility model can extrude the packing when the packing has small leakage, thereby strengthening the sealing performance again, and can realize the quick disassembly of the packing gland when the packing has large leakage, thereby facilitating the replacement of the gland packing.

Description

Middle-open packing gland for pump

Technical Field

The utility model relates to the field of packing glands, in particular to a middle-open packing gland for a pump.

Background

At present, in pump products, after the existing packing gland is used for a long time, packing is easily affected by factors such as abrasion, erosion, aging, temperature and the like, so that the packing is changed, the sealing performance is reduced, leakage is caused, and sealing is failed, and therefore the packing in the pump products in a packing sealing mode needs to be replaced frequently. In the pump replacement packing process, the packing gland is detached from the stuffing box and moved to the end far away from the packing, and the space between the general bracket body and the stuffing box is small due to the design and the cost problem, so that the space between the packing gland and the stuffing box is reserved to be smaller, and the packing is very difficult to extract and fill.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a middle-open type packing gland for a pump, which can extrude packing when the packing has small leakage so as to re-strengthen the sealing property, and can realize quick disassembly of the packing gland when the packing has large leakage so as to facilitate the replacement of gland packing.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a middle-open type packing gland for a pump comprises a gland main body, wherein the gland main body consists of two half gland bodies, a semicircular column is arranged on a single half gland body, a first shaft hole is formed in the middle of the semicircular column, second external threads are arranged on the outer side wall of the semicircular column, threaded holes are formed in the half gland bodies, and the two half gland bodies are connected through connecting bolts penetrating through the threaded holes;

still include beaded finish and pressure material spare, the beaded finish middle part is equipped with the second shaft hole, is equipped with first external screw thread on the beaded finish lateral wall, presses the material spare main part to be the loop forming element, presses the material spare to pass the setting in beaded finish and the gland main part.

In the preferred scheme, the upper end of the inner wall of the semicircular ring column of the semi-pressing cover body is provided with a first arc-shaped positioning groove, the bottom surface of the reinforcing ring is provided with a positioning piece, and the positioning piece is matched with the first positioning groove to realize stable connection between the reinforcing ring and the pressing cover main body.

In the preferred scheme, the upper end of the material pressing piece is provided with an outer ring plate, the inner wall of the outer ring plate is provided with an internal thread, and the internal thread is matched with a first external thread on the reinforcing ring and a second external thread on the semicircular column.

In a preferred scheme, the lower end of the pressing part is a reducing section, and the outer diameter of the reducing section is gradually reduced from top to bottom.

In the preferred scheme, two half gland bodies between still be equipped with the locating pin, the locating pin both ends set up respectively in the second constant head tank that sets up on two half gland body lateral walls.

The utility model provides a middle-open type packing gland for a pump, which has the following beneficial effects by adopting the structure:

(1) when the filler is slightly worn and has small leakage, the filler can be extruded by rotating the pressing piece, so that the density of the filler is improved, the slight leakage is solved, and the sealing performance is improved;

(2) the middle-opening type gland structure is adopted, so that the gland can be rapidly disassembled when moderate or severe leakage occurs, and the supplement and replacement operation of the packing can be conveniently carried out.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of a half capping body according to the present invention.

Fig. 3 is a schematic structural view of the material pressing member of the present invention.

Fig. 4 is a schematic sectional view showing the structure of the present invention in an assembled state.

In the figure: gland main part 1, beaded finish 2, first external screw thread 201, press material piece 3, internal thread 301, half pressure lid 4, locating pin 401, second constant head tank 402, semicircle ring post 5, second external screw thread 501, primary shaft hole 6, screw hole 7, connecting bolt 8, first constant head tank 9, spacer 10, secondary shaft hole 11, outer crown plate 12.

Detailed Description

As shown in fig. 1-4, a pump middle-open packing gland comprises a gland body 1, wherein the gland body 1 is composed of two half gland bodies 4, a semicircular column 5 is arranged on a single half gland body 4, a first shaft hole 6 is arranged in the middle of the semicircular column 5, a second external thread 501 is arranged on the outer side wall of the semicircular column 5, a threaded hole 7 is arranged on the half gland body 4, and the two half gland bodies 4 are connected through a connecting bolt 8 penetrating through the threaded hole 7;

still include the beaded finish 2 and

press material

3, 2 middle parts of beaded finish are equipped with second shaft hole 11, are equipped with first external screw thread 201 on 2 lateral walls of beaded finish, press material 3 main parts to be the loop forming element, press material 3 to pass the setting in beaded finish 2 and gland main part 1.

In the preferred scheme, the upper end of the inner wall of the semicircular column 5 of the half-pressing cover body 4 is provided with an arc-shaped first positioning groove 9, the bottom surface of the reinforcing ring 2 is provided with a positioning piece 10, and the positioning piece 10 is matched with the first positioning groove 9 to realize the stable connection between the reinforcing ring 2 and the gland main body 1.

In a preferred scheme, an outer ring plate 12 is arranged at the upper end of the material pressing piece 3, an inner thread 301 is arranged on the inner wall of the outer ring plate 12, and the inner thread 301 is matched with a first outer thread 201 on the reinforcing ring 2 and a second outer thread 501 on the semicircular column 5.

In a preferred scheme, the lower end of the material pressing piece 3 is a reducing section, and the outer diameter of the reducing section is gradually reduced from top to bottom.

In a preferred scheme, a positioning pin 401 is further arranged between the two half-pressing cover bodies 4, and two ends of the positioning pin 401 are respectively arranged in second positioning grooves 402 formed in the side walls of the two half-pressing cover bodies 4.

This neotype installation principle as follows:

two half pressure lid bodies 4 are installed through connecting bolt 8, then through the cooperation of spacer 10 and first locating groove 9, realize the installation of beaded finish 2 on gland main part 1, will press material piece 3 to realize the installation through the cooperation of internal thread 301 with first external screw thread 201 at last to manual rotatory pressure material piece 3 contacts between material piece 3 lower extreme and the filler.

When slight leakage occurs at the position of the filler, the pressing piece 3 is firstly rotated, so that the pressing piece 3 continuously extrudes the filler, and the adjustment of the sealing performance of the filler is completed.

If the leakage problem still exists after the rotary pressing part 3 reaches the maximum stroke, the filler needs to be supplemented or replaced, at the moment, the rotary pressing part 3 is separated from the second external thread 501, and then the connecting bolt 8 is unscrewed, so that the gland main body 1 can be disassembled, and the filler can be supplemented or replaced again.

Claims

1. The utility model provides a pump is with open gland in, includes gland main part (1), its characterized in that: the gland body (1) consists of two half gland bodies (4), a semicircular ring column (5) is arranged on a single half gland body (4), a first shaft hole (6) is formed in the middle of the semicircular ring column (5), second external threads (501) are arranged on the outer side wall of the semicircular ring column (5), threaded holes (7) are formed in the half gland bodies (4), and the two half gland bodies (4) are connected through connecting bolts (8) penetrating through the threaded holes (7);

still include beaded finish (2) and press material piece (3), beaded finish (2) middle part is equipped with second shaft hole (11), is equipped with first external screw thread (201) on beaded finish (2) lateral wall, presses material piece (3) main part to be the loop forming element, presses material piece (3) to pass the setting in beaded finish (2) and gland main part (1).

2. The packing gland for a pump of claim 1, wherein: semicircular ring post (5) inner wall upper end of half pressure lid (4) be equipped with curved first locating groove (9), be equipped with spacer (10) on the bottom surface of beaded finish (2), spacer (10) and first locating groove (9) cooperation realize the stable connection between beaded finish (2) and gland main part (1).

3. The packing gland for a pump of claim 1, wherein: the material pressing piece is characterized in that an outer ring plate (12) is arranged at the upper end of the material pressing piece (3), an inner thread (301) is arranged on the inner wall of the outer ring plate (12), and the inner thread (301) is matched with a first outer thread (201) on the reinforcing ring (2) and a second outer thread (501) on the semicircular column (5).

4. The packing gland for a pump of claim 1, wherein: the lower extreme of pressure material spare (3) be the reducing section, the external diameter of reducing section reduces from top to bottom gradually.

5. The packing gland for a pump of claim 1, wherein: two half pressure lid (4) between still be equipped with locating pin (401), locating pin (401) both ends set up respectively in second constant head tank (402) that set up on two half pressure lid (4) lateral walls.