阅读说明：本技术 止回导流的管式离心机 (Non-return flow-guiding tube type centrifugal machine ) 是由 赵东飞 于 2019-11-14 设计创作，主要内容包括：本发明涉及一种止回导流的管式离心机,其是包括：下方形成有进料空心轴的转鼓；以及位于所述进料空心轴下方,用于向所述转鼓供料的输料管；的管式离心机,其特征在于,所述转鼓的进料空心轴的上方设置有与转鼓密封的止回导流阀；所述止回导流阀,包括：外周分布有多个阀芯通孔,且中心连通有导流管的阀芯；包裹所述阀芯并形成有多个阀盖通孔的阀盖；以及设置于所述阀芯的外周的密封圈。(The invention relates to a non-return flow-guiding tubular centrifuge, which comprises: a rotary drum with a feeding hollow shaft is formed below the feeding hollow shaft; the conveying pipe is positioned below the feeding hollow shaft and used for feeding materials to the rotary drum; the tubular centrifuge is characterized in that a check diversion valve sealed with the rotary drum is arranged above the feeding hollow shaft of the rotary drum; the check diverter valve includes: a plurality of valve core through holes are distributed on the periphery of the valve core, and the center of the valve core is communicated with a valve core of a flow guide pipe; the valve cover wraps the valve core and is provided with a plurality of valve cover through holes; and a seal ring disposed on the periphery of the valve core.)

1. A non-return flow tube centrifuge comprising:

a rotary drum with a feeding hollow shaft is formed below the feeding hollow shaft; and

a feed delivery pipe located below the feeding hollow shaft and used for feeding materials to the rotary drum;

the tubular centrifuge of (1), characterized in that,

a check diversion valve sealed with the rotary drum is arranged above the feeding hollow shaft of the rotary drum;

the check diverter valve includes:

a plurality of valve core through holes are distributed on the periphery of the valve core, and the center of the valve core is communicated with a valve core of a flow guide pipe;

the valve cover wraps the valve core and is provided with a plurality of valve cover through holes; and

and the sealing ring is arranged on the periphery of the valve core.

2. The non-return flow-directing tube centrifuge of claim 1, wherein:

the honeycomb duct is provided with the quadrangular plate.

3. The non-return flow-directing tube centrifuge of claim 2, wherein:

an enveloping pipe is also formed above the conveying pipe;

the honeycomb duct inserts the involucra pipe certain distance, and honeycomb duct periphery with the involucra pipe keeps safe distance.

Technical Field

The invention relates to a centrifugal machine, in particular to a tubular centrifugal machine.

Background

At present, the function of a check valve of a domestic and foreign vertical centrifuge is a single function of stopping backflow of all feed liquid. The centrifugal separator stops rotating along with the rotary drum of the centrifugal separator, feed liquid cannot reversely flow back to the feed liquid pump through the input pipe and then is separated, only the feed liquid can be remained in the rotary drum, and then the centrifugal separator is stopped and manually pours out residual materials through disassembly. Therefore, the check valve with the traditional structure wastes manpower and time, particularly valuable centrifugal feed liquid, a large amount of raw materials, increases the centrifugal cost and is difficult to improve the production benefit.

Disclosure of Invention

The problems to be solved by the invention are as follows:

in view of the above problems, the present invention provides a non-return flow-guide tube centrifuge capable of preventing feed liquid from leaking from the outer periphery of a feed delivery tube.

Means for solving the problems:

the invention relates to a non-return flow-guiding tube centrifuge, which comprises: a rotary drum with a feeding hollow shaft is formed below the feeding hollow shaft; the conveying pipe is positioned below the feeding hollow shaft and used for feeding materials to the rotary drum; the tubular centrifuge is characterized in that a check diversion valve sealed with the rotary drum is arranged above the feeding hollow shaft of the rotary drum; the check diverter valve includes: a plurality of valve core through holes are distributed on the periphery of the valve core, and the center of the valve core is communicated with a valve core of a flow guide pipe; the valve cover wraps the valve core and is provided with a plurality of valve cover through holes; and a seal ring disposed on the periphery of the valve core.

According to the structure, when the centrifuge separates materials and liquids, the sealing ring expands due to the action of centrifugal force, the valve core through hole on the valve core is not blocked any more, and negative pressure is generated on the periphery of the valve core, so that when material liquid is input from the material conveying pipe, the material liquid is input into the rotary drum through the periphery of the valve core, the valve core through hole and the valve cover through hole. And when the centrifugal machine has no centrifugal force, the sealing ring restores and seals the valve core through hole on the valve core, so that part of residual feed liquid flows back to the feed delivery pipe through the valve cover through hole, the valve cover gap and the flow guide pipe.

Preferably, the draft tube is provided with a quadrangular plate.

According to the structure, the rotatable quadrangular plate sleeved on the periphery of the flow guide pipe can strengthen negative pressure generated under the action of centrifugal force.

Preferably, a wrapping pipe is further formed above the material conveying pipe; the honeycomb duct inserts the involucra pipe certain distance, and honeycomb duct periphery with the involucra pipe keeps safe distance.

According to the structure, the circumambient pipe above the material conveying pipe can further ensure that the backflow material liquid cannot leak outwards.

Drawings

FIG. 1 is a front view of a non-return flow tube centrifuge of the present invention;

FIG. 2 is a perspective view of the check diverter valve of the present invention;

FIG. 3 is a schematic cross-sectional view of the check diverter valve of the present invention in the delivery state;

fig. 4 is a schematic cross-sectional view of the check diverter valve of the present invention in the flow directing state.

Detailed Description

As shown in fig. 1, the tube centrifuge has a casing, a rotary drum 1 housed in the casing, and a feed pipe 2 located below the rotary drum 1. The non-return diversion valve 3 according to the present invention is arranged at the lower part of the inside of the rotary drum 1, namely at the position where the rotary drum 1 is communicated with the material conveying pipe 2 (the frame position in fig. 1).

The check valve according to an embodiment of the present invention will be described in detail below with reference to fig. 2 to 4.

Fig. 2 is a perspective view of the check diverter valve of the present invention. Fig. 3 is a schematic cross-sectional view of the check diverter valve of the present invention in a feeding state. Fig. 4 is a schematic cross-sectional view of the check diverter valve of the present invention in the flow directing state.

As shown in fig. 2, the check valve 3 includes: valve cover 31, valve core 32, delivery pipe 33 located below the center of valve core 32.

The bonnet 31 is formed in a substantially umbrella-shaped structure, and a plurality of bonnet through holes 311 are formed at the umbrella surface (slope surface). The valve cover 31 covers the valve body 32 described below in a half-wrapped manner from the side circumferential surface and the upper circumferential surface of the valve body, and a certain gap is provided between the valve cover 31 and the valve body 32.

In addition, a plurality of valve cover through holes 311 formed at the umbrella surface of the valve cover 31 are preferably arranged at equal intervals, so that the feed liquid can be uniformly delivered to the rotary drum 1.

The valve body 32 is formed in a shape of a circular disk having a top surface, and a side circumferential surface extending downward is formed on the outer circumference of the circular disk, thereby forming a cylindrical shape having an open bottom (or may be referred to as a lid shape).

The valve body 32 has a through hole formed at the center of the top surface thereof and opened to penetrate the delivery pipe 33, and a plurality of valve body through holes 322 formed on the side peripheral surface thereof. Among them, it is preferable that a plurality of valve core through holes 322 formed on the side circumferential surface of the valve core 32 are opened at equal intervals, so that the feed liquid can be uniformly discharged to the rotary drum 1, and a uniform negative pressure can be formed in combination with a quadrangular plate described below.

In addition, the valve core 32 has a smaller diameter than the valve cover 31, so that when the valve cover 31 covers the top surface and the side periphery of the valve core 32, a certain gap is formed for the circulation of the feed pipe 2.

The delivery tube 33 is formed in a penetrating tubular shape, and as described above, the upper end opening of the delivery tube 33 is connected to the penetrating opening on the top surface of the valve body 32, thereby forming an integrated flow guide passage. The lower opening of the guide pipe 33 is aligned with the opening of the feed delivery pipe 2, but is not in contact with the feed delivery pipe 2, so that the contact friction loss between the guide pipe 33 and the feed delivery pipe 2 in the rotation process of the rotary drum 1 is not affected.

In the above structure, a feeding space (negative pressure space) is formed between the outer periphery of the lower guide tube 33 and the inner periphery of the valve element 32. The material conveying space means that when the rotary drum 1 rotates and the material conveying pipe 2 conveys material liquid into the rotary drum, the material liquid can be sequentially input into the rotary drum 1 through the material conveying pipe 2, the material conveying space, the valve core through hole 322 (the flow guide pipe 33) and the valve cover through hole 311.

A seal ring 34 smaller than the gap is fitted around the outer periphery of the valve element 32.

The sealing ring 34 is normally (in a stationary state) tightly wrapped around the outer periphery of the valve element 32 to close the valve element through hole 322, and when the rotary drum 1 rotates, the sealing ring 34 expands outward due to centrifugal force to cling to the inner peripheral surface of the valve cover 31, and at this time, the valve element through hole 322 is opened to allow the feed liquid to flow out through the valve element through hole 322.

The sealing ring 34 is normally (in a static state) tightly wrapped around the valve core 32 to block the valve core through hole 322, and at this time, if there is residual feed liquid in the rotary drum 1, the only flow path is the valve cover through hole 311, the gap between the top surface of the valve core 32 and the valve cover 31, the guide pipe 33, and finally the feed pipe 2 flows.

When the rotary drum 1 rotates, the seal ring 34 expands outward due to centrifugal force and is thus in close contact with the inner circumferential surface of the valve cover 31, and at this time, the valve body through hole 322 is opened, thereby allowing the feed liquid to flow out through the valve body through hole 322.

As described above, a feed space is formed between the guide pipe 33 and the valve element 32, and negative pressure is generated when the rotary drum 1 rotates, so that feed liquid is introduced into the rotary drum 1 through the space and the valve element through hole 322 and the valve cover through hole 311. In this case, as a preferred configuration of the present invention, 1 quadrangular plate 5 may be fitted around the outer periphery of the draft tube 33, and the quadrangular plate 5 may be formed in a fan structure so as to be rotatable with respect to the draft tube 33.

Regarding this four arris boards 5, when rotary drum 1 rotated, it had the negative pressure to form in the defeated material space, and four arris boards synchronous revolution under the drive of rotary drum, and the negative pressure that this defeated material space was further strengthened to the rotation of four arris boards 5 forms suction to when can improving the efficiency of conveying pipeline 2, further strengthen the guide effect that the feed liquid flows.

As described above, when the rotary drum 1 stops rotating, the seal ring 34 returns to the size of wrapping the outer periphery of the valve element 32, and at this time, the material liquid remaining in the rotary drum 1 passes through the valve cover through hole 311, the gap between the top surface of the valve element 32 and the valve cover 31, and the guide pipe 33 in sequence, and finally flows through the material conveying pipe 2. In this case, as a preferable configuration of the present invention, the enveloping pipe 4 may be provided above the feed pipe 2.

As described above, when the rotary drum 1 stops rotating, the seal ring 34 returns to the size of wrapping the outer periphery of the valve element 32, and at this time, the material liquid remaining in the rotary drum 1 passes through the valve cover through hole 311, the gap between the top surface of the valve element 32 and the valve cover 31, and the guide pipe 33 in sequence, and finally flows back to the material conveying pipe 2. In this case, as a preferable configuration of the present invention, the enveloping pipe 4 may be provided above the feed pipe 2.

The enveloping pipe 4 is disposed above the feed pipe 2, and has an inner diameter slightly larger than the guide pipe 33, so that a certain gap is formed between the enveloping pipe and the guide pipe 33, that is, a safety distance is maintained, so that the feed liquid flows through the enveloping pipe, and the contact friction loss between the guide pipe 33 and the enveloping pipe due to the rotation of the drum 1 is prevented.

Meanwhile, the height of the shrouding tube 4 is slightly higher than the bottom surface of the draft tube 33 in the horizontal position, that is, the draft tube 33 is slightly inserted into the shrouding tube 4 for a certain distance. This is because, as described above, when the rotary drum 1 stops rotating, the feed liquid finally flows back to the feed pipe 2 through the flow guide pipe 33, but the flow guide pipe 33 does not contact and communicate with the feed pipe 2, and therefore, the feed liquid may be splashed outward during the backflow. The inclusion pipe 4 prevents the leakage of the feed liquid by sputtering when the feed liquid flows back.

The above is a description of the structure of the check guide valve for a tube centrifuge according to the present invention, and the gist of the present invention is described in detail in the above description, but the description is only an example of a preferred embodiment of the present invention, and the embodiment of the present invention is not limited to the above description, and the increase, decrease, and simple replacement of the components and/or the structure thereof should fall within the scope of the present invention without departing from the gist of the present invention.

Notation:

1, rotating a drum;

2, a material conveying pipe;

3 a check valve;

31 a check valve cover;

311 a bonnet through hole;

32 a check valve core;

322 valve core through hole;

33 a flow guide pipe;

34 a seal ring;

4, wrapping a pipe;

5 rectangular plate.