CN210715128U - Full silicon carbide chemical pump - Google Patents

Abstract

The utility model discloses be applied to the transport of acid-base salt on the industrial process. The pump comprises a pump body, an impeller, a pump cover, a pump shaft and a bearing bracket; the pump body, the pump cover and the bearing bracket are sequentially connected, the impeller is arranged in a sealing cavity formed between the pump body and the pump cover, and the impeller is connected with one end of the pump shaft through a locking thread; the pump shaft penetrates out of the pump cover and the bearing bracket, and the other end of the pump shaft is connected with the bearing bracket through an end bearing; the end bearing is connected with the bearing bracket through a bearing seat (bearing body); the connecting plate of the bearing seat is placed on the end part of the bearing bracket, a gap is reserved between the connecting plate and the bearing bracket, and the connecting plate and the bearing bracket are connected through an adjusting bolt. The utility model discloses carborundum chemical pump has rational in infrastructure, excellent performance, operation are reliable, maintain simple and overhaul advantages such as facility. Can be widely applied to the conveying of acid, alkali and salt in various industries.

Description

Full silicon carbide chemical pump

Technical Field

The utility model discloses be applied to the transport of acid-base salt on the industrial process.

Background

The horizontal slurry pump is generally used in the industrial parts of mines, coal mines, metallurgy, electric power and the like and is used for conveying abrasive, coarse-grained and high-concentration slurry. However, the existing horizontal slurry pump has poor anti-clogging performance and low safety performance in the transportation process. Therefore, a new horizontal slurry pump is urgently needed to solve the problem.

Disclosure of Invention

The utility model provides a full silicon carbide chemical pump aiming at the defects existing in the prior art.

In order to realize the purpose, the utility model adopts the following technical proposal, comprising a pump body, an impeller, a pump cover, a pump shaft and a bearing bracket; the pump body, the pump cover and the bearing bracket are sequentially connected, the impeller is arranged in a sealing cavity formed between the pump body and the pump cover, and the impeller is connected with one end of the pump shaft through a locking thread; the pump shaft penetrates out of the pump cover and the bearing bracket, and the other end of the pump shaft is connected with the bearing bracket through the end bearing.

The end bearing is connected with the bearing bracket through a bearing seat (bearing body); the connecting plate of the bearing seat is placed on the end part of the bearing bracket, a gap is reserved between the connecting plate and the bearing bracket, and the connecting plate and the bearing bracket are connected through an adjusting bolt.

As a preferred scheme of the utility model, the adjusting bolt sequentially passes through the connecting plate of the bearing seat and the end part of the bearing bracket, so that the two are connected into a whole; the depth of the adjusting bolt screwed into the end part of the bearing bracket is adjusted, and the size of the gap between the bearing seat connecting plate and the end part of the bearing bracket is adjustable.

When the clearance is reduced, namely the bearing seat moves leftwards, the pump shaft and the impeller connected with the pump shaft are driven to integrally move leftwards, and the overflowing clearance between the impeller and the sealing cavity is reduced; on the contrary, when the clearance becomes bigger, the bearing seat moves rightwards to drive the pump shaft and the impeller connected with the pump shaft to integrally move rightwards, and the overflowing clearance between the impeller and the sealing cavity becomes bigger. The impeller, the shaft, the bearing and the bearing body are combined into a whole, and the relative position of the impeller can be adjusted through the adjusting bolt, so that the overflowing gap between the impeller and the pump body is always kept at the optimal value of 0.7-1 mm.

As another preferred scheme of the utility model, tip bearing and middle part bearing are antifriction bearing.

As another preferred scheme of the utility model, be provided with the backward flow hole on the impeller, impeller (the main blade of impeller) still links to each other as an organic wholely with bellied auxiliary blade, and the impeller drives the continuous rotation of auxiliary blade in the rotation, and it is mobile to drive the medium, and partial medium passes through backward flow hole circulation, prevents that the clearance that overflows in sealed chamber from blockking up because of the deposit.

As another preferred scheme of the utility model, the impeller and/or the pump body adopt the carborundum material.

As another preferred scheme of the utility model, a middle bearing is arranged at the middle position of the pump shaft in the bearing bracket, and the middle bearing is connected with the bearing bracket through a bearing seat (bearing body); a shaft sleeve is sleeved outside the pump shaft above the hub of the impeller, and the shaft sleeve is in key connection with the pump shaft; the middle bearing and the shaft sleeve are also provided with a disassembly ring convenient to disassemble, and the left half ring and the right half ring of the disassembly ring are detachably buckled outside the pump shaft.

As another preferable scheme of the utility model, mechanical seal and/or packing seal are adopted outside the shaft sleeve.

As another preferred scheme of the utility model, it is sealed through the sealing washer between the pump body and pump cover.

Compared with the prior art the utility model discloses beneficial effect.

The utility model discloses carborundum chemical pump has rational in infrastructure, excellent performance, operation are reliable, maintain simple and overhaul advantages such as facility. Can be widely applied to the conveying of acid, alkali and salt in various industries.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.

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

Fig. 2 is a side view of the structure of the present invention.

In the figure, 1 is a bracket, 2 is a detachable ring, 3 is a shaft sleeve, 4 is a mechanical seal, 5 is a pump shaft, 6 is a backflow hole, 7 is a pump cover, 8 is an auxiliary blade, 9 is an impeller, 10 is an adjusting bolt, 11 is a pump body, 12 is an overflowing gap, 13 is a sealing ring, 14 is a rolling bearing, 15 is an inlet, 16 is a packing seal, 17 is a bearing seat, and 18 is an outlet.

Detailed Description

As shown in fig. 1-2, the utility model comprises a pump body 11, an impeller 9, a pump cover 7, a pump shaft 5 and a bearing bracket 1; the pump body 11, the pump cover 7 and the bearing bracket 1 are sequentially connected, the impeller 9 is arranged in a sealing cavity formed between the pump body 11 and the pump cover 7, and the impeller 9 is connected with one end of the pump shaft 5 through anti-loosening threads; the pump shaft 5 penetrates out of the pump cover 7 and the bearing bracket 1, and the other end of the pump shaft 5 is connected with the bearing bracket 1 through an end bearing.

The end bearing is connected with the bearing bracket 1 through a bearing seat 17 (bearing body); the connecting plate of the bearing seat 17 is placed on the end part of the bearing bracket 1, a gap is reserved between the connecting plate and the bearing bracket 1, and the connecting plate and the bearing bracket are connected through an adjusting bolt.

As a preferred scheme of the utility model, the adjusting bolt sequentially passes through the connecting plate of the bearing seat 17 and the end part of the bearing bracket 1, so that the two are connected into a whole; the depth of the adjusting bolt screwed into the end part of the bearing bracket 1 is adjusted, and the size of the gap between the connecting plate of the bearing seat 17 and the end part of the bearing bracket 1 is adjustable.

When the clearance is reduced, namely the bearing seat 17 moves leftwards, the pump shaft 5 and the impeller 9 connected with the pump shaft 5 are driven to integrally move leftwards, and the overflowing clearance 12 between the impeller 9 and the sealing cavity is reduced; on the contrary, when the gap becomes larger, the bearing seat 17 moves rightwards, so that the pump shaft 5 and the impeller 9 connected with the pump shaft 5 are driven to integrally move rightwards, and the overflowing gap 12 between the impeller 9 and the seal cavity becomes larger. The impeller 9, the shaft, the bearing and the bearing body are combined into a whole, the relative position of the impeller 9 can be adjusted through the adjusting bolt, and the overflowing gap 12 between the impeller 9 and the pump body 11 is always kept at the optimal value of 0.7-1 mm. The optimal anti-blocking performance of the overflowing clearance is obtained on the premise of ensuring the performance of the pump body.

As another preferred embodiment of the present invention, the end bearing and the middle bearing are rolling bearings 14.

As another preferred scheme of the utility model, be provided with backward flow hole 6 on the impeller 9, impeller 9 (the main blade of impeller 9) still links to each other as an organic wholely with bellied auxiliary blade 8, and impeller 9 drives auxiliary blade 8 in the rotation and constantly rotates, drives the medium and flows, and partial medium passes through backward flow hole 6 circulation, prevents that the clearance 12 that overflows of seal chamber from blockking up because of the deposit.

As another preferred embodiment of the present invention, the impeller 9 and/or the pump body 11 are made of silicon carbide.

As another preferred scheme of the present invention, a middle bearing is disposed at a middle position of the pump shaft 5 in the bearing bracket 1, and the middle bearing is connected to the bearing bracket 1 through a bearing seat 17 (bearing body); a shaft sleeve 3 is sleeved outside the pump shaft 5 above the hub of the impeller 9, and the shaft sleeve 3 is in key connection with the pump shaft 5; still be provided with the dismantlement ring 2 of convenient dismantlement between middle part bearing and axle sleeve 3, the detachable lock of semi-ring is outside pump shaft 5 about this dismantlement ring 2. When the pump shaft 5 rotates, the impeller 9 is driven to rotate synchronously with the shaft sleeve 3, and the process of increasing energy of a conveying medium from the inlet 15 of the pump body 11 to the outlet 18 of the pump body 11 is realized.

The function of the dismounting ring 2 is: the impeller 9 and the pump shaft 5 are connected by a T-shaped thread with a locking function. When impeller 9 is rotatory, impeller 9 and axle can be stressed tightly gradually, when needs dismantle impeller 9, pull down earlier ring 2, then can loosen impeller 9 and the tight state of axle, just so can dismantle impeller 9 very easily, otherwise dismantle impeller 9 the degree of difficulty increase, still may cause the damage to the part.

As another preferable scheme of the present invention, a mechanical seal 4 and/or a packing seal 16 are/is adopted outside the shaft sleeve 3.

As another preferred scheme of the utility model, it is sealed through sealing washer 13 between pump body 11 and pump cover 7.

Be provided with backward flow hole 6 on impeller 9, impeller 9 still links to each other as an organic wholely with bellied auxiliary blade 8, and impeller 9 drives auxiliary blade 8 in the rotation and constantly rotates, and it is mobile to drive the medium, and partial medium passes through backward flow hole 6 circulation, prevents that sealed chamber from overflowing clearance 12 and blockking up because of the deposit. The secondary blades 8 function as: axial force generated in the rotation of the impeller 9 is balanced by the auxiliary blades 8 of the impeller 9, the impeller 9 can continuously rotate through the auxiliary blades 8 in the rotation process to drive a medium to flow, part of the medium can circulate through the backflow hole 6, the medium in the sealing cavity is guaranteed not to be deposited, and the overflowing gap 12 of the sealing cavity is prevented from being blocked due to deposition. The medium in the sealing cavity is ensured to be in a flowing state all the time, the sealing damage caused by medium deposition can not occur, and the service life of the equipment is effectively ensured.

The safe use coefficient of the silicon carbide impeller 9 of the utility model is obviously improved, and the wearing parts such as the impeller 9 and the like do not need to be frequently replaced; the high-wear-resistance and high-corrosion-resistance steel plate has excellent wear resistance and high corrosion resistance, can prolong the service life by 3-5 times, greatly reduces the long-term operation and maintenance cost, and creates great economic benefit for customers. Meanwhile, the utilization of rare noble metals is reduced, and great economic benefits and social benefits are created for the country and the society.

Specifically, the pump body 11 is made of silicon carbide, so that the abrasion resistance and the corrosion resistance are improved; the impeller 9 is made of silicon carbide, the corrosion resistance, the abrasion resistance and the mechanical property of the impeller 9 are far higher than those of a metal impeller 9, the safe use coefficient is obviously improved, the use performance of parts is ensured, the overall weight is reduced, the service life is prolonged, and the parts do not need to be frequently maintained and replaced. And the silicon carbide material can resist abrasion and corrosion, does not react with most of acid, alkali and salt, and is particularly suitable for conveying mixed slag-containing wastewater.

In addition, the original opening ring structure is eliminated, the number of wearing parts is reduced, mechanical faults caused by abrasion, corrosion and the like are effectively prevented, the leakage amount is reduced due to the increase of the area of the overflowing gap 12, and the improvement of the pump efficiency is facilitated. The design of the auxiliary blade 8 and the return hole 6 can effectively prevent the overflowing gap 12 at the position of the sealing cavity from being blocked by impurities.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims (8)

1. A full silicon carbide chemical pump comprises a pump body, an impeller, a pump cover, a pump shaft and a bearing bracket; the pump is characterized in that the pump body, the pump cover and the bearing bracket are sequentially connected, the impeller is arranged in a sealing cavity formed between the pump body and the pump cover, and the impeller is connected with one end of the pump shaft through anti-loosening threads; the pump shaft penetrates out of the pump cover and the bearing bracket, and the other end of the pump shaft is connected with the bearing bracket through an end bearing;

the end bearing is connected with the bearing bracket through a bearing seat; the connecting plate of the bearing seat is placed on the end part of the bearing bracket, a gap is reserved between the connecting plate and the bearing bracket, and the connecting plate and the bearing bracket are connected through an adjusting bolt.

2. The pump of claim 1, wherein: the adjusting bolt sequentially penetrates through the connecting plate of the bearing seat and the end part of the bearing bracket to enable the connecting plate and the end part of the bearing bracket to be connected into a whole; the depth of the adjusting bolt screwed into the end part of the bearing bracket is adjusted, and the size of the gap between the bearing seat connecting plate and the end part of the bearing bracket is adjustable.

3. The pump of claim 1, wherein: the end bearing adopts a rolling bearing.

4. The pump of claim 1, wherein: the impeller is provided with a backflow hole and is connected with the raised auxiliary blades into a whole, the impeller drives the auxiliary blades to rotate continuously in rotation to drive a medium to flow, and part of the medium circulates through the backflow hole to prevent an overflowing gap of the sealing cavity from being blocked due to deposition.

5. The pump of claim 1, wherein: the impeller and/or the pump body are made of silicon carbide.

6. The pump of claim 1, wherein: the middle part of the pump shaft, which is positioned in the bearing bracket, is provided with a middle bearing, and the middle bearing is connected with the bearing bracket through a bearing seat; a shaft sleeve is sleeved outside the pump shaft above the hub of the impeller, and the shaft sleeve is in key connection with the pump shaft; a disassembly ring convenient to disassemble is arranged between the middle bearing and the shaft sleeve, and the left half ring and the right half ring of the disassembly ring are detachably buckled outside the pump shaft; the middle bearing adopts a rolling bearing.

7. The pump of claim 6, wherein: and the outside of the shaft sleeve is sealed by adopting mechanical seal and/or packing.

8. The pump of claim 1, wherein: the pump body is sealed with the pump cover through a sealing ring.

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