CN217813915U

CN217813915U - Gland, seal chamber and screw pump

Info

Publication number: CN217813915U
Application number: CN202221795813.0U
Authority: CN
Inventors: 杨川; 杨宇飞; 杨耀峰; 张德学
Original assignee: Guangdong Standard Fluid Systems Co ltd
Current assignee: Guangdong Standard Fluid Systems Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-11-15
Anticipated expiration: 2032-07-12

Abstract

The utility model discloses a gland, include: the first split body is provided with a first semicircular hole, the first split body is provided with two first mounting lugs, and the first mounting lugs are provided with first mounting holes which are arranged in the same direction as the first semicircular hole; the second body is provided with a second semicircular hole, the second body is provided with two second mounting lugs, and the second mounting lugs are provided with second mounting holes which are arranged in the same direction as the second semicircular hole; the two first mounting lugs are respectively abutted with the two second mounting lugs, and the first split body and the second split body form a gland with a round hole through the mutual opposite direction of the first mounting hole and the second mounting hole. Because the first split body and the second split body are assembled and the gland and the external part are connected by the same connecting pair, the accurate positioning relation between the gland and the external part can be ensured, and compared with the prior art, the assembling steps of the gland are fewer. And simultaneously, the utility model also provides a sealed chamber of using above-mentioned gland and the screw pump of using above-mentioned sealed chamber.

Description

Gland, seal chamber and screw pump

Technical Field

The utility model relates to a screw pump technical field, in particular to gland, seal chamber and screw pump.

Background

The existing screw pump generally comprises a motor, a coupler, a bearing seat, a transmission shaft, a sealing chamber, a suction chamber, a universal joint connecting rod, a rotor, a stator and a discharge body, wherein a main shaft of the motor is connected with the transmission shaft through the coupler, the transmission shaft sequentially penetrates through the bearing seat and the sealing chamber and extends into the suction chamber, the transmission shaft and the rotor in the suction chamber are connected through the universal joint connecting rod, and the rotor performs spiral motion in the stator, so that materials in the suction chamber are spirally pushed to the discharge body and are discharged outwards. In order to avoid the damage of the motor caused by the leakage of the materials in the suction chamber to the motor, a plurality of sealing rings for sealing the transmission shaft are arranged in the sealing chamber, and a gland for fixing the positions of the sealing rings is arranged on the outer side of the sealing chamber.

The gland is the integral type structure before, in case the gland forgets the assembly or takes place to damage and need change the condition, then must pull down whole transmission shaft side and can realize the installation to the gland. However, with the development of the industry, a detachable gland has appeared in recent years, which divides a gland into two parts, the two parts are assembled and installed through bolts and nuts, and the installed gland is fastened with a sealing chamber through bolts, so that the step of detaching a transmission shaft is omitted. However, in practical use, the inventor finds that due to the lack of a corresponding positioning structure between the two split bodies, an accurate positioning relationship between the combined gland and the sealing chamber cannot be ensured, and the gland still needs to be adjusted repeatedly during installation, which wastes time and labor.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a gland to solve one or more of the problems of the prior art and to provide at least one of the advantages of the present invention.

According to the utility model discloses a gland of first aspect embodiment, include:

the first split body is provided with a first semicircular hole, the two sides of the first semicircular hole of the first split body are respectively provided with a first mounting lug, and each first mounting lug is provided with a first mounting hole arranged in the same direction as the first semicircular hole;

the second body is provided with a second semicircular hole, the two sides of the second semicircular hole of the second body are respectively provided with a second mounting lug, and each second mounting lug is provided with a second mounting hole arranged in the same direction as the second semicircular hole; the two first mounting lugs are respectively abutted to the two second mounting lugs, the first split body and the second split body form a gland with a round hole through the first mounting hole and the second mounting hole which are opposite to each other, and the round hole of the gland is formed by combining the first semicircular hole and the second semicircular hole.

According to the utility model discloses gland has following beneficial effect at least: because the assembly of the first split body and the second split body and the connection of the gland and the external part share the same connecting pair, the accurate positioning relation between the gland and the external part can be ensured, and compared with the prior art, the assembly steps of the gland are fewer, so that the purposes of saving time and labor are achieved.

According to the utility model discloses a some embodiments, two first installation ear is followed respectively the axis direction of first semicircle hole carries out dislocation set, two the second installation ear is followed respectively the axis direction of second semicircle hole carries out dislocation set. By the arrangement, after the first split body and the second split body are assembled, the first split body and the second split body cannot be disassembled in the axis direction, so that the first split body and the second split body are stably connected.

According to some embodiments of the present invention, in order to facilitate the processing of the first and second components, the central axes of all the first mounting holes and the central axes of all the second mounting holes are located on the concentric circle of the circular hole.

According to some embodiments of the utility model, the terminal surface of first components of a whole that can function independently with the terminal surface of second components of a whole that can function independently each other parallel and level for the gland that the combination formed is not different from current integral type gland in appearance.

According to the utility model discloses a sealed chamber of second aspect embodiment, including sealed main part, a plurality of sealing washer and foretell gland, sealed main part is equipped with the centre bore, and all sealing washers all set up in order in the centre bore, the terminal surface of sealed main part is equipped with two screws, two first mounting hole and two the screw is one-to-one respectively and sets up, the gland connect in sealed main part and with the sealing washer carries out the butt.

According to some embodiments of the utility model, the sealing main body is in the one end of centre bore is equipped with spacing edge, spacing edge's size is less than the size of sealing washer, the sealing washer is located the gland with between the spacing edge, prescribe a limit to this the position of sealing washer.

According to the utility model discloses a screw pump of third aspect embodiment, including motor, shaft coupling, bearing frame, transmission shaft, suction chamber, flexible connecting rod, rotor, stator, the exhaust body and foretell sealed chamber, bearing frame, sealed chamber, suction chamber, stator and exhaust body connect in order, the main shaft of motor with the transmission shaft passes through the shaft coupling is connected, the transmission shaft passes in proper order bearing frame, sealed chamber and extend to in the suction chamber, be located suction chamber's transmission shaft with the rotor passes through the flexible connecting rod is connected, the rotor is in carry out the helical motion in the stator.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a gland according to an embodiment of the present invention;

FIG. 2 is an exploded view of the gland shown in FIG. 1;

fig. 3 is a schematic structural diagram of a first split body according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a sealing chamber according to an embodiment of the present invention;

FIG. 5 is an exploded view of the sealed chamber shown in FIG. 4;

FIG. 6 is a cross-sectional view of the sealed chamber shown in FIG. 4;

fig. 7 is a sectional view of a screw pump according to an embodiment of the present invention.

In the drawings: 101-a gland, 100-a first split, 200-a second split, 110-a first semicircle orifice, 210-a second semicircle orifice, 102-a round orifice, 120-a first mounting lug, 121-a first mounting orifice, 220-a second mounting lug, 221-a second mounting orifice, 103-a connecting orifice, 20-a sealing chamber, 300-a sealing body, 400-a sealing ring, 310-a central orifice, 320-a limiting edge, 510-a screw, 520-a nut, 10-a bearing seat, 30-a suction chamber, 40-a stator, 50-a discharge body, 60-a transmission shaft, 70-a flexible connecting rod, 80-a rotor and 11-a bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 and 2, the gland 101 according to the embodiment of the first aspect of the present invention includes a first body 100 and a second body 200, the first body 100 and the second body 200 are respectively provided with a first semi-circular hole 110 and a second semi-circular hole 210, and the radius of the first semi-circular hole 110 is consistent with the radius of the second semi-circular hole 210, so that the first semi-circular hole 110 and the second semi-circular hole 210 can be combined into a complete circular hole 102.

Specifically, the first sub-body 100 is provided with two first mounting ears 120 along a diameter route of the first semicircular hole 110, two first mounting ears 120 are respectively located at two sides of the first semicircular hole 110, and two first mounting ears 120 all extend to a virtual semicircle corresponding to the first semicircular hole 110, each first mounting ear 120 is provided with a first mounting hole 121, and the first mounting holes 121 and the first semicircular hole 110 are arranged in the same direction. Similarly, second components of a whole that can function independently 200 follows be equipped with two second installation ears 220, two on the diameter route of second semicircle orifice 210 second installation ear 220 is located respectively the both sides of second semicircle orifice 210, and two second installation ear 220 all extend to with the corresponding virtual semicircle of second semicircle orifice 210, every second installation ear 220 all is equipped with second mounting hole 221, second mounting hole 221 with second semicircle orifice 210 syntropy sets up.

When the first sub-body 100 and the second sub-body 200 need to be assembled, firstly, the two first mounting lugs 120 respectively abut against the two second mounting lugs 220, and the first mounting holes 121 face the second mounting holes 221, so that the first sub-body 100 and the second sub-body 200 can jointly form the gland 101 with the circular hole 102, at this time, the central axes of all the first mounting holes 121 and the central axes of all the second mounting holes 221 are all on a concentric circle of the circular hole 102, that is, the linear distance from all the first mounting holes 121 to the circular hole 102 is equal to the linear distance from all the second mounting holes 221 to the circular hole 102, and the end face of the first sub-body 100 and the end face of the second sub-body 200 are flush with each other. For the convenience of the following description, when the first and

second sub-bodies

100 and 200 are assembled into the pressing cover 101, any one of the first mounting holes 121 and the corresponding second mounting hole 221 together form the coupling hole 103 of the pressing cover 101.

By adopting the structure, the assembly of the first split body 100 and the second split body 200 and the connection of the gland 101 and the external part share the same connecting pair, so that the accurate positioning relation between the gland 101 and the external part can be ensured, and compared with the prior art, the assembly steps of the gland 101 are fewer, so that the purposes of saving time and labor are achieved.

As shown in fig. 3, in some embodiments of the present invention, two of the first mounting ears 120 are disposed in a staggered manner along the axial direction of the first semicircular hole 110, and the bottom surface of one of the first mounting ears 120 is flush with the top surface of the other first mounting ear 120. Similarly, the two second mounting ears 220 are respectively disposed along the axis of the second semicircular hole 210 in a staggered manner, and one of the second mounting ears 220 is flush with the other second mounting ear 220. With the above arrangement, the first sub-body 100 and the second sub-body 200 need to be assembled in a diameter direction, and after the first sub-body 100 and the second sub-body 200 are assembled, the first sub-body 100 and the second sub-body 200 cannot be disassembled in an axial direction, so that the first sub-body 100 and the second sub-body 200 can be stably connected. In addition, through the above arrangement, the first sub-body 100 and the second sub-body 200 can be consistent in structure, so as to reduce the cost of opening the mold.

The present invention is not limited to the number of the divided bodies of the pressing cover 101, and in other embodiments, the number of the divided bodies of the pressing cover 101 may be three or four, but is not limited thereto.

As shown in fig. 4 to 6, the sealing chamber 20 according to the embodiment of the second aspect of the present invention includes the gland 101 according to the embodiment of the first aspect of the present invention, and further includes a sealing main body 300 and a plurality of sealing rings 400, wherein the sealing rings 400 can be selected as packing sealing rings, the sealing main body 300 is in a ring shape, and is provided with a central hole 310, and the sealing main body 300 is provided with a limiting edge 320 at one end of the central hole 310, and the size of the sealing ring 400 is larger than that of the limiting edge 320, so that all the sealing rings 400 can be sequentially disposed in the central hole 310 and abut against the limiting edge 320. In addition, the end face of the sealing main body 300 is provided with two screw holes, and the two connecting holes 103 and the two screw holes are respectively arranged in a one-to-one correspondence manner.

When the gland 101 needs to be connected to the sealing main body 300, the two screws 510 are respectively screwed into the two screw holes, then the two connection holes 103 of the gland 101 respectively pass through the two screws 510, and finally the two nuts 520 are used to mount the gland 101 in the direction of the sealing ring 400 until the gland 101 abuts against the sealing ring 400, and at this time, the sealing ring 400 is located between the gland 101 and the limiting edge 320, so as to limit the position of the sealing ring 400.

Since the sealing chamber 20 adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

As shown in fig. 7, a screw pump according to a third aspect of the present invention includes a sealing chamber 20 according to the above second aspect of the present invention, and further includes a driving module, a bearing seat 10, a suction chamber 30, a stator 40 and an ejector 50, wherein the bearing seat 10, the sealing chamber 20, the suction chamber 30, the stator 40 and the ejector 50 are connected in sequence, the driving module includes a motor (not shown in the drawings), a coupling (not shown in the drawings), a transmission shaft 60, a flexible connecting rod 70 and a rotor 80, a main shaft of the motor is connected to the transmission shaft 60 through the coupling, a plurality of dry bearings 11 are disposed in the bearing seat 10, the transmission shaft 60 sequentially passes through the bearing seat 10, the sealing chamber 20 and extends into the suction chamber 30, the transmission shaft 60 located in the suction chamber 30 is connected to the rotor 80 through the flexible connecting rod 70, so that the motor can drive the rotor 80 to perform a spiral motion in the stator 40, thereby spirally pushing the material in the suction chamber 30 to the ejector 50 and discharging the material outwards. It is understood that the present invention is not limited to the structure of the flexible connecting rod 70, and the flexible connecting rod 70 includes, but is not limited to, a cardan joint connecting rod or a flexible connecting rod.

Since the seal chamber 20 is located between the bearing housing 10 and the suction chamber 30, the seal ring 400 in the seal chamber 20 can effectively prevent the leakage of the material in the suction chamber 30. If the gland 101 is forgotten to be assembled or damaged and needs to be replaced, the first and

second components

100 and 200 are assembled to the gland 101 on both sides of the transmission shaft 60, and the gland 101 can be sleeved on the transmission shaft 60 without disassembling the transmission shaft 60.

Since the screw pump adopts all technical schemes of all the embodiments, at least all the beneficial effects brought by the technical schemes of the embodiments are achieved, and no further description is given here.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A gland, characterized by comprising:

the first split body (100) is provided with a first semicircular hole (110), two sides of the first semicircular hole (110) of the first split body (100) are respectively provided with a first mounting lug (120), and each first mounting lug (120) is provided with a first mounting hole (121) which is arranged in the same direction as the first semicircular hole (110);

the second body (200) is provided with a second semicircular hole (210), the second body (200) is provided with second mounting lugs (220) on two sides of the second semicircular hole (210), and each second mounting lug (220) is provided with a second mounting hole (221) which is arranged in the same direction as the second semicircular hole (210); two first installation ear (120) respectively with two second installation ear (220) are butt joint each other, first part body (100) with second part body (200) pass through first mounting hole (121) with second mounting hole (221) just to each other and constitute gland (101) that have round hole (102) jointly, round hole (102) of gland (101) by first semicircle orifice (110) with second semicircle orifice (210) are formed by the combination.

2. A gland according to claim 1 wherein: the two first mounting lugs (120) are arranged along the axis direction of the first semicircular hole (110) in a staggered mode respectively, and the two second mounting lugs (220) are arranged along the axis direction of the second semicircular hole (210) in a staggered mode respectively.

3. A gland according to claim 1 or 2, wherein: the central axes of all the first mounting holes (121) and the central axes of all the second mounting holes (221) are positioned on a concentric circle of the circular hole (102).

4. A gland according to claim 1 wherein: the end face of the first sub-body (100) and the end face of the second sub-body (200) are flush with each other.

5. A sealed chamber comprising a gland according to any one of claims 1 to 4, further comprising: sealed main part (300) and a plurality of sealing washer (400), sealed main part (300) are equipped with centre bore (310), and all sealing washer (400) all set up in order in centre bore (310), the terminal surface of sealed main part (300) is equipped with two screw, two first mounting hole (121) and two the screw is the one-to-one setting respectively, gland (101) connect in sealed main part (300) and with sealing washer (400) carry out the butt.

6. The sealed chamber of claim 5, wherein: the sealing body (300) is provided with a limiting edge (320) at one end of the central hole (310), the size of the limiting edge (320) is smaller than that of the sealing ring (400), and the sealing ring (400) is located between the gland (101) and the limiting edge (320).

7. Screw pump, comprising a sealing chamber according to claim 5 or 6, further comprising: motor, shaft coupling, bearing frame (10), transmission shaft (60), suction chamber (30), flexible connecting rod (70), rotor (80), stator (40) and exhaust body (50), bearing frame (10), seal chamber (20), suction chamber (30), stator (40) and exhaust body (50) are connected in order, the main shaft of motor with transmission shaft (60) pass through the shaft coupling is connected, transmission shaft (60) pass in proper order bearing frame (10), seal chamber (20) and extend to in suction chamber (30), be located transmission shaft (60) in suction chamber (30) with rotor (80) pass through flexible connecting rod (70) are connected, rotor (80) are in carry out spiral motion in stator (40).