CN219932500U

CN219932500U - Sewage pump oil chamber probe mounting structure

Info

Publication number: CN219932500U
Application number: CN202320990439.8U
Authority: CN
Inventors: 谢照林
Original assignee: Zhejiang Lulin Pump Co ltd
Current assignee: Zhejiang Lulin Pump Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-10-31
Anticipated expiration: 2033-04-27

Abstract

The utility model provides a sewage pump oil chamber probe mounting structure, and belongs to the technical field of water pumps. It has solved the inconvenient problem of current probe installation. In the sewage pump oil chamber probe installation structure, an oil chamber consists of a bearing seat and a sealing cover fixed at the lower end of the bearing seat, the probe comprises a straight rod-shaped body, the installation structure is arranged at the upper end of the bearing seat and comprises an annular step coaxially arranged on the outer side wall of the bearing seat, and the annular step consists of an annular side surface and an annular bottom surface which are vertically arranged; the annular bottom surface is vertically penetrated with a mounting hole communicated with the oil chamber, the body is in the mounting hole in a threaded manner, the lower end of the body extends into the oil chamber, the upper end of the body is positioned in the annular step, and the body is sealed with the bearing seat through a sealing ring. The sewage pump oil chamber probe installation structure is convenient for probe installation.

Description

Sewage pump oil chamber probe mounting structure

Technical Field

The utility model belongs to the technical field of water pumps, and relates to a sewage pump, in particular to a sewage pump oil chamber probe mounting structure.

Background

Sewage pumps are one type of non-clogging pump, and are of various types, mainly for the transportation of municipal sewage, faeces or liquids containing fibres.

The utility model provides a high leakproofness sewage pump of large-traffic (application number: 201920635155.0) of current sewage pump as disclosed in China's patent storehouse, including the pump head, the pump body and the pump cover that the cooperation set up, the pump body in install in the motor and the pivot of motor stretch into in the pump head and be connected with the impeller, the pump cover in be provided with the start-up electric capacity and be connected with the motor, the upper end of the pump body thickens and radially has seted up the arc wall, the pump cover on radial protrusion form integral type and with arc wall complex snap ring, the pump cover outer end is located opposite axial of snap ring and has seted up the through-hole, the pump head on set up the screw corresponding with the through-hole to wear to establish screw rod with pump head, pump body and pump cover fastening shaping between through radial nut further fastening between the pump head and the pump body, the pump head in set up sealed chamber, and the epaxial mechanical seal of motor be located sealed chamber department, sealed chamber inside is filled with seal oil, and the pump head has the oiling mouth that is linked to sealed chamber and is provided with the filler neck in the filler mouth department.

In order to enable a user to directly know the temperature of sealing oil and whether leakage occurs in a sealing cavity, the prior art is to open a hole at the upper end of the sealing cavity, and put an oil temperature probe and an oil water probe at the position of the hole to detect the temperature and the leakage respectively. However, as can be seen from the above patent drawings, the opening position of the sealing cavity is just at the arc section, the space is relatively narrow, and the conventional probe generally adopts a polygonal rotating head, so that the probe can be subjected to more interference during the rotating installation, and the assembly is relatively unsmooth.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a sewage pump oil chamber probe mounting structure convenient to assemble and disassemble.

The aim of the utility model can be achieved by the following technical scheme: the sewage pump oil chamber probe mounting structure is characterized by comprising an annular step coaxially arranged on the outer side wall of the bearing seat, wherein the annular step consists of an annular side surface and an annular bottom surface which are vertically arranged; the installation hole communicated with the oil chamber is vertically penetrated through the annular bottom surface, the body is in the installation hole in a screwed mode, the lower end of the body stretches into the oil chamber, the upper end of the body is positioned in the annular step, and the body is sealed with the bearing seat through the sealing ring.

The annular step with the axial section approximately in an L shape is formed on the outer side wall of the bearing seat so as to form a larger avoidance space, so that the interference suffered by the tool when the body is rotated circumferentially is reduced, and the probe is effectively and conveniently installed.

In the above-mentioned sewage pump oil chamber probe mounting structure, the outside face of the above-mentioned bearing frame is formed with the conical surface that the diameter is from top to bottom grow gradually, and the annular side is in between conical surface and the annular bottom surface, and the conical surface extends to be connected with the annular side to form bigger avoidance space, further reduce the interference that receives when the rotatory installation of probe, further facilitate the installation.

In the sewage pump oil chamber probe mounting structure, the body is T-shaped, the body consists of the head and the rod part screwed into the mounting hole, the sealing ring is sleeved outside the rod part, and two end faces of the sealing ring are respectively pressed on the head and the bearing seat.

In the sewage pump oil chamber probe installation structure, the installation hole is composed of a large hole and a threaded hole matched with the rod part, the large hole and the threaded hole are coaxially arranged, the large hole diameter is larger than that of the threaded hole, the threaded hole is positioned below the large hole, and the sealing ring is positioned in the large hole and is pressed on the bottom wall of the large hole. The sealing ring is hidden in the mounting hole, so that the sealing ring is reduced from external interference, and the service life is prolonged.

In the sewage pump oil chamber probe installation structure, the head is tightly pressed on the annular bottom surface and covers the orifice of the installation hole, so that the sealing path formed between the body and the bearing seat can be prolonged, the leakage difficulty is enhanced, the working stability is improved, the sealing ring is positioned in a sealed cavity, and the service life of the sealing ring is further prolonged.

In the sewage pump oil chamber probe mounting structure, the outer side wall of the sealing ring is tightly pressed on the inner side wall of the large hole, so that the sealing path is further prolonged, and the leakage-proof performance is enhanced.

In the sewage pump oil chamber probe mounting structure, the rod part comprises the external thread section, and the lower end of the sealing ring is pressed on the upper end of the external thread section and used for pre-positioning the sealing ring, so that the subsequent mounting is convenient.

In the sewage pump oil chamber probe mounting structure, the annular side surface and the annular bottom surface are in arc transition, so that the processing is facilitated.

Compared with the prior art, the sewage pump oil chamber probe mounting structure has the following advantages:

1. the annular step with the axial section approximately in an L shape is formed on the outer side wall of the bearing seat so as to form a larger avoidance space, so that the interference suffered by the tool when the body is rotated circumferentially is reduced, and the probe is effectively and conveniently installed.

2. The head of the body is tightly pressed on the annular bottom surface and covers the orifice of the mounting hole, so that the sealing path formed between the body and the bearing seat can be prolonged, the leakage difficulty is enhanced, the working stability is improved, the sealing ring is positioned in a closed cavity, and the service life of the sealing ring is further prolonged.

Drawings

Fig. 1 is a schematic structural view of a sewage pump.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

Fig. 3 is a schematic view of a connection structure of the bearing housing and the body.

In the figure, 1, a pump shell; 2. a barrel; 3. a rotor shaft; 4. a bearing seat; 4a, annular flanging; 4b, annular steps; 4b1, annular sides; 4b2, annular bottom surface; 4c, mounting holes; 4c1, macropores; 4c2, a threaded hole; 4d, conical surface; 5. sealing cover; 6. an impeller; 7. mechanical sealing; 8. a body; 8a, a head; 8b, a rod part; 9. a seal ring; 10. an oil chamber.

Description of the embodiments

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the present sewage pump includes a pump housing 1 having a pump chamber and a cylinder 2 vertically provided on the pump housing 1. Wherein, the inside of the machine barrel 2 is vertically provided with a rotor shaft 3, and the inside of the lower end of the machine barrel 2 is provided with a bearing seat 4 which is in running fit with the rotor shaft 3. An annular flanging 4a is formed on the outer wall of the lower end of the bearing seat 4, the annular flanging 4a is clamped between the machine barrel 2 and the pump shell 1, and the pump shell 1 and the machine barrel 2 are fixedly connected with the annular flanging 4a in a sealing mode. The lower end of the bearing seat 4 is fixedly sealed with a sealing cover 5, and an oil chamber 10 is formed between the bearing seat 4 and the sealing cover 5. An impeller 6 is arranged in the pump cavity, and the lower end of the rotor shaft 3 sequentially passes through the oil chamber 10 and the sealing cover 5 and is fixedly connected with the impeller 6. In actual products, the oil chamber 10 is filled with cooling oil, and a mechanical seal 7 is provided to seal the rotor shaft 3, the bearing housing 4, and the seal cover 5.

The probe is an existing product, and can be an oil temperature detection probe for detecting the temperature of cooling oil in the oil chamber 10; or an oil-water detection probe for detecting whether the oil chamber 10 has leakage. The probe comprises a straight rod-shaped body 8.

As shown in fig. 2 and 3, the present sewage pump oil chamber probe mounting structure is provided at the upper end of the bearing housing 4, and includes an annular step 4b coaxially provided on the outer side wall of the bearing housing 4, and the annular step 4b is composed of an annular side face 4b1 and an annular bottom face 4b2 which are vertically provided, at this time, the annular bottom face 4b2 is located at the lower side of the annular side face 4b1, and preferably the annular side face 4b1 and the annular bottom face 4b2 are transited through an arc. Wherein, vertically run through on the annular bottom surface 4b2 has the mounting hole 4c of intercommunication grease chamber 10, and body 8 spiro union is in mounting hole 4c, and body 8 lower extreme stretches into grease chamber 10, and body 8 upper end stretches out mounting hole 4c and is in annular step 4b, and body 8 passes through sealing washer 9 and forms sealedly between the bearing frame 4. The annular step 4b with the axial section approximately in an L shape is formed on the outer side wall of the bearing seat 4 so as to form a larger avoidance space, so that interference suffered by the tool when the body 8 is rotated circumferentially is reduced, and the probe is effectively and conveniently installed.

Further, the outer side surface of the bearing seat 4 is formed with a conical surface 4d with the diameter gradually increased from top to bottom, the annular side surface 4b1 is located between the conical surface 4d and the annular bottom surface 4b2, and the conical surface 4d extends to be connected with the annular side surface 4b1 so as to form a larger avoidance space, so that interference suffered during probe rotation and installation is further reduced, and the installation is further convenient.

In the present embodiment of the present utility model, in the present embodiment,

the seal ring 9 is installed as follows: the rod part 8b comprises an external thread section, and the lower end of the sealing ring 9 is pressed on the upper end of the external thread section and is used for pre-positioning the sealing ring 9, so that the subsequent installation is convenient; the body 8 is T-shaped, the body 8 consists of a head 8a and a rod 8b screwed into the mounting hole 4c, the sealing ring 9 is sleeved outside the rod 8b, and two end faces of the sealing ring 9 are respectively pressed on the head 8a and the bearing seat 4. Further, the mounting hole 4c is composed of a large hole 4c1 and a threaded hole 4c2 matched with the rod part 8b, the large hole 4c1 and the threaded hole 4c2 are coaxially arranged, the aperture of the large hole 4c1 is larger than that of the threaded hole 4c2, the threaded hole 4c2 is positioned below the large hole 4c1, the sealing ring 9 is positioned in the large hole 4c1 and is pressed on the bottom wall of the large hole 4c1, and the outer side wall of the sealing ring 9 is pressed on the inner side wall of the large hole 4c1, so that the sealing path is further prolonged, and the leakage resistance is enhanced; the head 8a is tightly pressed on the annular bottom surface 4b2 and covers the orifice of the mounting hole 4c, so that the sealing path formed between the body 8 and the bearing seat 4 can be prolonged, the leakage difficulty is enhanced, the working stability is improved, the sealing ring 9 is positioned in a closed cavity, and the service life of the sealing ring 9 is further prolonged.

In an actual product, two mounting holes 4c are uniformly distributed along the circumferential direction of the rotor shaft 3, and the probes are arranged in the two mounting holes 4c, wherein one probe is an oil temperature detection probe, and the other probe is an oil water detection probe.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The sewage pump oil chamber probe mounting structure is characterized by comprising an annular step (4 b) coaxially arranged on the outer side wall of the bearing seat (4), wherein the annular step (4 b) consists of an annular side surface (4 b 1) and an annular bottom surface (4 b 2) which are vertically arranged; the annular bottom surface (4 b 2) is vertically penetrated with a mounting hole (4 c) communicated with the oil chamber (10), the body (8) is in the mounting hole (4 c) in a threaded manner, the lower end of the body (8) extends into the oil chamber (10), the upper end of the body (8) is positioned in the annular step (4 b), and the body (8) is sealed with the bearing seat (4) through a sealing ring (9).

2. The structure for installing the probe in the oil chamber of the sewage pump according to claim 1, wherein the outer side surface of the bearing seat (4) is formed with a tapered surface (4 d) having a diameter gradually increasing from top to bottom, the annular side surface (4 b 1) is located between the tapered surface (4 d) and the annular bottom surface (4 b 2), and the tapered surface (4 d) is extended to be connected with the annular side surface (4 b 1).

3. The sewage pump oil chamber probe mounting structure according to claim 1 or 2, characterized in that the body (8) is T-shaped, the body (8) is composed of a head (8 a) and a rod (8 b) screwed into the mounting hole (4 c), the sealing ring (9) is sleeved outside the rod (8 b), and both end surfaces of the sealing ring (9) are respectively pressed on the head (8 a) and the bearing seat (4).

4. A sewage pump oil chamber probe mounting structure according to claim 3, characterized in that the mounting hole (4 c) is composed of a large hole (4 c 1) and a threaded hole (4 c 2) matched with the rod part (8 b), the large hole (4 c 1) and the threaded hole (4 c 2) are coaxially arranged, the aperture of the large hole (4 c 1) is larger than that of the threaded hole (4 c 2), the threaded hole (4 c 2) is positioned below the large hole (4 c 1), and the sealing ring (9) is positioned in the large hole (4 c 1) and is pressed on the bottom wall of the large hole (4 c 1).

5. A sewage pump oil chamber probe mounting structure according to claim 4, characterized in that the head (8 a) is pressed against the annular bottom surface (4 b 2) and covers the orifice of the mounting hole (4 c).

6. The arrangement of the sewage pump oil chamber probe according to claim 4, characterized in that the outer side wall of the sealing ring (9) is pressed against the inner side wall of the large hole (4 c 1).

7. A sewage pump oil chamber probe mounting structure according to claim 3, characterized in that the rod portion (8 b) comprises an externally threaded section, and the lower end of the sealing ring (9) is pressed against the upper end of the externally threaded section.

8. A sewage pump oil chamber probe mounting structure according to claim 1, characterized in that the annular side surface (4 b 1) and the annular bottom surface (4 b 2) are transited by an arc.