Pump cover structure with adjusting ring for pipeline pump

Abstract

The utility model relates to a pipeline pump cover structure with an adjusting ring, which comprises a pump body, a motor and a base, the pump body is fixed on the front side of the base, the motor is fixed on the rear side of the base, an impeller is arranged in the pump body, and the pipeline pump cover structure is characterized in that a machine seal is arranged between the impeller and a pump cover, the motor is a lengthened shaft, and the lengthened shaft transversely penetrates through the pump cover, the machine seal and the impeller. The front end of the lengthened shaft is fixed to the front end of the impeller through an impeller nut, a hub at the rear end of the impeller abuts against a shaft shoulder of the lengthened shaft, the front end of the mechanical seal abuts against the hub of the impeller, an adjusting ring is installed in the pump cover, the rear end of the mechanical seal abuts against the front end face of the adjusting ring, an O-shaped seal is arranged between the side face of the adjusting ring and the pump cover, and a jackscrew is arranged at the rear end of the adjusting ring. And the jackscrew is screwed in a bolt hole on the pump cover. The mechanical seal has the advantages that the adjusting ring is additionally arranged on the pump cover, the mechanical seal is adjusted and compensated due to abrasion of the movable ring and the movable ring of the mechanical seal and weakening of elastic force of the spring due to long-time mechanical action, and the purpose that the MG1 mechanical seal and the M37G mechanical seal are universal is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline pump sealing, in particular to a pipeline pump pump cover structure with an adjusting ring. Background Art

[0002] In conventional pipeline pumps, due to the wear of the dynamic and static rings and the mechanical properties of the spring, the spring elasticity is insufficient, the compensation force between the dynamic and static rings is insufficient, and water easily leaks between the dynamic and static rings. Conventionally, this problem can only be solved by replacing the mechanical seal with a new one, which leads to waste of the mechanical seal. Generally, the softest alloy in the dynamic and static rings is close to being worn out and has the highest utilization rate.

[0003] Conventional single-end universal mechanical seal type MG1 and single-end universal mechanical seal type M37G share a pump cover. Since the lengths of the two mechanical seals are different, a gasket is usually added when using MG1 to compensate for the short part of MG1, so as to achieve the purpose of commonality. However, since the gasket is a separate part, it does not match the impeller and pump cover, which leads to missing installation when buying replacement parts later. The purpose of mechanical seal sealing cannot be achieved, and gaskets need to be purchased separately later, resulting in later after-sales costs. Utility Model Content

[0004] The utility model aims to provide a pipeline pump cover structure with an adjusting ring.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is: a pipeline pump with an adjustment ring pump cover structure, including a pump body, a motor and a base, the pump body is fixed to the front side of the base, the motor is fixed to the rear side of the base, and an impeller is arranged in the pump body, characterized in that: an organic seal is installed between the impeller and the pump cover, the motor is an extended shaft, the extended shaft crosses the pump cover, the organic seal, and the impeller, the front end of the extended shaft is fixed to the front end of the impeller by an impeller nut, the rear end hub of the impeller abuts against the shoulder of the extended shaft, the front end of the organic seal abuts against the impeller hub, an adjustment ring is installed in the pump cover, the rear end of the organic seal is pressed against the front end surface of the adjustment ring, an O-ring seal is arranged between the side of the adjustment ring and the pump cover, and a top screw is arranged at the rear end of the adjustment ring, which is screwed into the bolt hole on the pump cover. The organic seal is composed of a dynamic ring with a spring and a static ring. The utility model has the advantages of installing an adjusting ring on the pump cover to adjust and compensate the mechanical seal due to wear of the dynamic and static rings of the mechanical seal and weakening of the spring elastic force due to long-term mechanical action, and to achieve the purpose of making the MG1 mechanical seal and the M37G mechanical seal universal. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0007] Figure 2 for Figure 1 A partial enlarged view of the .

[0008] Reference numerals:

[0009] 1 pump body, 2 impeller, 3 pump cover, 4 motor, 5 base, 6 extended shaft extension, 7 top screw, 8 adjusting ring, 9 O-ring, 10 machine seal, 11 impeller nut. DETAILED DESCRIPTION

[0010] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0011] A pipeline pump in the figure has an adjustment ring pump cover structure, including a pump body, a motor and a base, the pump body is fixed to the front side of the base, the motor is fixed to the rear side of the base, and an impeller is arranged in the pump body, characterized in that: an organic seal is installed between the impeller and the pump cover, the motor is an extended shaft, the extended shaft crosses the pump cover, the organic seal, and the impeller, the front end of the extended shaft is fixed to the front end of the impeller by an impeller nut, the rear end hub of the impeller abuts against the shoulder of the extended shaft, the front end of the organic seal abuts against the impeller hub, an adjustment ring is installed in the pump cover, the rear end of the organic seal presses against the front end surface of the adjustment ring, an O-ring seal is arranged between the side of the adjustment ring and the pump cover, and a top screw is arranged at the rear end of the adjustment ring, which is screwed into the bolt hole on the pump cover. The organic seal is composed of a dynamic ring and a static ring with a spring.

[0012] The position of the adjusting ring is adjusted by rotating the top screw, thereby adjusting the length of the mechanical seal in the working state, and the spring is compressed to increase the compensation force of the spring.

[0013] The pump cover with an adjustment ring has three functions: first, it compensates for the wear of the dynamic and static rings; second, it compensates for the loss of elastic force of the spring due to mechanical movement; and third, it can adjust the length of the machine seal cavity to achieve the versatility of the machine seal. Since the conventional pump cover does not have the function of adjusting the length of the machine seal cavity, due to long-term operation, there is wear between the dynamic and static rings, and the elastic force of the spring is weakened due to mechanical action. Due to the lack of compensation force for these two reasons, the machine seal will leak, the preload force between the dynamic and static rings is insufficient, and the water will break the dynamic and static rings due to pressure and leak out, which cannot achieve a good sealing effect. The conventional solution is to replace the machine seal with a new one, which causes waste of the machine seal. Adding an adjustment ring can avoid the waste of the machine seal. In addition, conventional pump covers can use two types of mechanical seals, MG1 and M37G. Since the lengths of the two mechanical seals are different under working conditions, MG1 is shorter. Generally, a gasket is added to the rear end of the impeller hub to reduce the length of the mechanical seal cavity to achieve the purpose of compatibility between MG1 and M37G. However, it will be missed when purchasing accessories later. The gasket is a separate part and has no matching position, so it is easy to miss. After the adjustment ring is added to the pump cover, there is an assembly relationship between the adjustment ring and the pump cover, so there is no need to add a gasket separately. The adjustment ring has the function of adjusting the length of the mechanical seal cavity, so it can achieve the purpose of compatibility between MG1 and M37G mechanical seals.

[0014] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pipeline pump with an adjustment ring pump cover structure includes a pump body, a motor and a base, the pump body is fixed to the front side of the base, the motor is fixed to the rear side of the base, and an impeller is arranged in the pump body. Features: An organic seal is installed between the impeller and the pump cover. The motor is an extended shaft, which passes through the pump cover, the organic seal and the impeller. The front end of the extended shaft is fixed to the front end of the impeller by an impeller nut. The hub at the rear end of the impeller abuts against the shoulder of the extended shaft, and the front end of the organic seal abuts against the hub of the impeller. An adjusting ring is installed in the pump cover, and the rear end of the organic seal presses against the front end surface of the adjusting ring. An O-ring seal is arranged between the side of the adjusting ring and the pump cover. A top screw is arranged at the rear end of the adjusting ring, and the top screw is screwed into the bolt hole on the pump cover.

2. The pipeline pump according to claim 1 has an adjusting ring pump cover structure, It is characterized in that The mechanical seal is composed of a dynamic ring with a spring and a static ring.

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