CN203272872U

CN203272872U - Rotary valve

Info

Publication number: CN203272872U
Application number: CN 201320205842
Authority: CN
Inventors: 王满华
Original assignee: SHANGHAI SAIDONE TECHNOLOGIES Co Ltd
Current assignee: SHANGHAI SAIDONE TECHNOLOGIES Co Ltd
Priority date: 2013-04-22
Filing date: 2013-04-22
Publication date: 2013-11-06
Anticipated expiration: 2023-04-22

Abstract

The utility model relates to a rotary valve which comprises a hollow tapered valve body. A first opened end and a second opened end are formed at the two ends of the valve body respectively. The valve body at least comprises a first channel, a second channel, a third channel, a tapered valve element, an ejection mechanism installed on a valve cover, a revolving shaft connected with the valve element and a driving device driving the revolving shaft and the valve element to rotate, wherein the first channel, the second channel and the third channel are formed in the circumferential face of the valve body and mutually communicated. The valve cover is installed on the second opened end in a sealed mode. The tapered valve element is movably arranged in the valve body. The two ends of the valve element form a first sealed end and a second sealed end respectively. The valve element at least comprises a first port and a second port, wherein the first port and the second port are formed in the circumferential face of the valve element. The first port and the second port penetrate through the valve element in the radial direction and are mutually communicated through a connection channel. The first port can be selectively communicated with the first channel and the third channel. The second port can be selectively communicated with the first channel and the third channel. The rotary valve is capable of performing automatic axial adjustment and compensation and ensures that no gaps exist between the valve element and the valve body.

Description

Rotary valve

Technical field

The utility model relates to a kind of valve, and especially a kind of is the supporting rotary valve of filling machine.

Background technique

In the past rotary valve valve body and spool mostly are same stainless steel material, and just spool has been done Quenching Treatment.Owing to quenching, valve core material can only be used the stainless steel of low content.But the low content stainless steel does not meet again the requirement of food and medicine sanitation-grade, and therefore this rotary valve usually is not suitable in filling machine.Adopt conventional plastic poppet can meet the food and medicine hygienic requirements, but temperature influence is very large.The temperature height spool can expand and cause spool swollen extremely in the valve body chamber, temperature is low, and plastic poppet can shrink, and produces the gap between spool and valve body and causes leakage.Therefore, the temperature difference one is large, and plastic poppet just is difficult to normal operation.

In addition, existing rotary valve also is difficult to general for cream frost and particle object and aqua object.

The model utility content

Technical problem to be solved in the utility model is, a kind of rotary valve that can use in wider temperature range is provided.

for solving the problems of the technologies described above, the utility model provides a kind of rotary valve, it comprises: valve body, described valve body is the taper shape of hollow, its two ends form respectively the first opening end and the second opening end, the diameter of wherein said the first opening end is less than the diameter of described the second opening end, and first passage, second channel and third channel that described valve body comprises at least on the side face that is formed on described valve body, interconnects are arranged on to valve bonnet seal described the second opening end, be arranged at actively the spool in described valve body, described spool is conical, its two ends form respectively the first closed end and the second closed end, the diameter of wherein said the first closed end is less than the diameter of described the second closed end, described spool comprises the first port and the second port on the side face that is formed on described spool at least, described the first port and the second port radial penetration spool also communicate with each other by connecting passage, described the first port can optionally be communicated with described first passage and third channel, described the second port can optionally be communicated with described first passage and third channel, be arranged on described valve gap the penetrating mechanism of described spool towards described valve body pushing, be connected to the rotating shaft of described spool, and the drive unit that makes described rotating shaft described valve body rotation relative to described spool.

Preferably, the axis of described first passage, second channel and third channel is perpendicular to the axis of described valve body.

Preferably, the front end of described rotating shaft forms tenon, forms groove on the second closed end of described spool, and described tenon embeds in described groove.

Preferably, described tenon is the cross tenon, and described groove is cross recess.

Preferably, described drive unit comprise the gear that is fixed in described rotating shaft, the tooth bar that is meshed with described gear and the cylinder that is connected with described tooth bar.

Preferably, described rotating shaft is provided with dottle pin at the closed end place near described spool.

Preferably, be respectively arranged with bearing in the both sides of described gear.

Preferably, the roughness of described valve interior wall is 0.4 μ, and described valve body is gapless with coordinating of described spool.

Preferably, described penetrating mechanism comprises at least one group of pretension screw, spring and the decorative pearl on top of an official cap, wherein said pretension screw is screwed into valve gap, described spring is arranged in the pretension screw, compress the decorative pearl on top of an official cap of pretension screw front end, the described decorative pearl on top of an official cap against living spool, makes spool keep closely cooperating with the inwall of valve body under the pushing effect of described spring.

Preferably, described penetrating mechanism is one group, is arranged at the center of described valve gap; Perhaps described penetrating mechanism is many groups, evenly arranges with equal intervals centered by the axis of valve body.

Preferably, described rotary valve is Three-way rotary valve.

The utlity model has following advantage:

1. the utility model has adopted conical valve body and spool, simultaneously penetrating mechanism is set on valve gap, allows spool and valve body keep closely cooperating.Even temperature variation may produce the gap between valve body and spool, under the pushing effect of spring, spool can the automatic axial adjustment and the gap is compensated, and guarantees both gaplesss.

2. adopt said structure to make valve improve a lot on seal and wear resistance, can be applicable to simultaneously aqueous liquid material and cream frost material.

Description of drawings

Fig. 1 is the stereogram according to rotary valve embodiment of the present utility model.

Fig. 2 is rotary valve embodiment's shown in Figure 1 exploded perspective view.

Fig. 3 is rotary valve embodiment's shown in Figure 1 plan view.

Fig. 4 is rotary valve embodiment's shown in Figure 1 plan view.

Fig. 5 is rotary valve embodiment's shown in Figure 1 side view.

Fig. 6 is the schematic diagram that rotary valve embodiment's shown in Figure 1 first passage is connected with third channel.

Fig. 7 is the schematic diagram that rotary valve embodiment's shown in Figure 1 second channel is connected with third channel.

Embodiment

Describe concrete structure and the working principle of rotary valve of the present utility model in detail below in conjunction with preferred embodiment.

As shown in Figure 1-Figure 3, rotary valve of the present utility model is a Three-way rotary valve.This Three-way rotary valve comprises valve body 1.Described valve body 1 is roughly the taper shape of hollow, and its two ends form respectively the first opening end 10a and the second opening end 10b, and wherein the diameter of the first opening end 10a is less, and the diameter of the second opening end 10b is larger.Form three passages that interconnect, i.e. first passage 11, second channel 12 and third channel 13 on the side face of valve body 1.The axis of these three passages is vertical with the axis of valve body, and first passage 11 differs 90 ° with third channel 13 axis, and third channel 13 differs 90 ° with second channel 12 axis.First passage 11 differs 180 ° with second channel 12 axis, is in radially relative position.

Spool 2 shapes are also conical, are arranged on movably in described valve body 1, make spool 2 around the central shaft rotation of valve body 1, also can move vertically.The two ends of spool 2 form respectively the first closed end 20a and the second closed end 20b, and wherein the diameter of the first closed end 20a is less, and the diameter of the second closed end 20b is larger.Comprise two ports on the side face of spool 2, i.e. the first port 21 and the second port 22.The first port 21 and the second port 22 radial penetration spools 2 communicate with each other by connecting passage 23, as shown in Figure 6 and Figure 7.The first port 21 and the second port 22 optionally are communicated with first passage 11, second channel 12 and the third channel 13 of valve body 1.More particularly, the first port 21 can be selected to be communicated with first passage 11 or third channel 13, and the second port 22 can be selected to be communicated with second channel 12 or third channel.

The first closed end 20a of spool 2 is connected with rotating shaft 5.The front end of rotating shaft 5 is formed with cross tenon 51.The first closed end 20a of spool 2 exposes from the first opening end 10a of valve body 1, and correspondingly forms cross recess 23, embeds for cross tenon 51 to coordinate.The rotation of rotating shaft 5 just can be with movable valve plug 2 to rotate together like this.

Valve gap 15 is arranged on the second opening end 10b of valve body 1 hermetically, and the second closed end 20b of spool 2 is enclosed in valve body 1.Valve gap 15 is provided with penetrating mechanism, vertically ejection spool 2 inwardly.

In the present embodiment, this penetrating mechanism comprises pretension screw 16, spring 17 and the decorative pearl on top of an official cap 18.Pretension screw 16 is screwed into valve gap 15, and spring 17 is arranged in pretension screw 16, compresses the decorative pearl on top of an official cap 18 of pretension screw 16 front ends.The pushing that the decorative pearl on top of an official cap 18 is subject to spring 17 is against living spool 2, and spool 2 is kept and the closely cooperating of the inwall of valve body 1.Even temperature variation may produce the gap between valve body 1 and spool 2, under the pushing effect of spring 17, spool 2 can the automatic axial adjustment and the gap is compensated, and guarantee both gaplesss.

In the present embodiment, penetrating mechanism comprises one group of pretension screw 16, spring 17 and the decorative pearl on top of an official cap 18, is arranged on the center of valve gap 15, namely is in the axial location place of valve body 1 and spool 2.But be not limited to this, for example, with equal intervals, many group pretension screws 16, spring 17 and the decorative pearl on top of an official cap 18 be set evenly centered by the axis of valve body 1, make ejection force be evenly distributed on spool 2, allow spool 2 coordinate with valve body 1 inwall more reposefully.

Rotating shaft 5 is rotated by drive unit.In the present embodiment, this drive unit comprises gear 31, tooth bar 32 and cylinder 4.Rotating shaft 5 extends in gear-box 3, and gear 31 is assemblied in this rotating shaft 5 and is contained in gear-box.Tooth bar 32 with gear 31 engagements also is set in gear-box 3.This tooth bar 32 is connected with the piston 41 of cylinder 4.When starting cylinder 4, piston 41 band carry-over bar 32 motions that move back and forth make the gear 31 that the is engaged with rotation that swings.Like this, rotating shaft 5 just is driven in rotation.

Be connected with the first port 21 and third channel 13 and the position that the second port 22 is connected when rotating to first passage 11, form the flow path (as shown in Figure 6) of first passage 11-first port 21-the second port 22-third channel 13.After half-twist, arrive third channel 13 and be connected with the first port 21 and second channel 12 and the position that the second port 22 is connected, form the flow path (as shown in Figure 7) of second channel 12-second port 22-the first port 21-third channel 13.

Rotating shaft 5 also is provided with dottle pin 6 at the closed end place near spool, is used for sealing and prevents fluid leakage.Both sides at gear 31 arrange respectively bearing 7, are convenient to the rotation of rotating shaft 5.

Above-described embodiment is take a Three-way rotary valve as example, describe, but the utility model is not limited to Three-way rotary valve.According to the instruction of above-described embodiment, those skilled in the art can be directly with its structure applications in the four-way rotary valve or more in the rotary valve of multi-path, these contents also should be included in protection domain of the present utility model.

Claims

1. a rotary valve, is characterized in that, comprising:

Valve body (1), described valve body is the taper shape of hollow, its two ends form respectively the first opening end (10a) and the second opening end (10b), the diameter of wherein said the first opening end (10a) is less than the diameter of described the second opening end (10b), first passage (11), second channel (12) and third channel (13) that described valve body comprises at least on the side face that is formed on described valve body (1), interconnects, valve gap (15) is arranged on described the second opening end (10b) hermetically;

be arranged at actively the spool (2) in described valve body (1), described spool (2) is conical, its two ends form respectively the first closed end (20a) and the second closed end (20b), the diameter of wherein said the first closed end (20a) is less than the diameter of described the second closed end (20b), described spool (2) comprises the first port (21) and the second port (22) on the side face that is formed on described spool (2) at least, described the first port (21) and the second port (22) radial penetration spool (2) also communicate with each other by connecting passage (23), described the first port (21) can optionally be communicated with described first passage (11) and third channel (13), described the second port (22) can optionally be communicated with described first passage (11) and third channel (13),

Be arranged on described valve gap (15) upper with the penetrating mechanism of described spool (2) towards described valve body (1) pushing;

Be connected to the rotating shaft (5) of described spool (2); And

Make the drive unit of described rotating shaft (5) described valve body relative to described spool (2) (1) rotation.

2. rotary valve according to claim 1, it is characterized in that: the axis of described first passage (11), second channel (12) and third channel (13) is perpendicular to the axis of described valve body (1).

3. rotary valve according to claim 1 is characterized in that: the front end of described rotating shaft (5) forms tenon (51), the upper groove (23) that forms of second closed end (20b) of described spool (2), and described tenon (51) embeds in described groove.

4. rotary valve according to claim 3, it is characterized in that: described tenon (51) is the cross tenon, and described groove is cross recess.

5. rotary valve according to claim 1 is characterized in that: described drive unit comprises the gear (31) that is fixed in described rotating shaft (5), the tooth bar (32) that is meshed with described gear (31) and the cylinder (4) that is connected with described tooth bar.

6. rotary valve according to claim 1 is characterized in that: described rotating shaft (5) is provided with dottle pin (6) at the closed end place near described spool (2).

7. rotary valve according to claim 5, is characterized in that: be respectively arranged with bearing (7) in the both sides of described gear (31).

8. rotary valve according to claim 1, it is characterized in that: the roughness of described valve interior wall is 0.4 μ, described valve body is gapless with coordinating of described spool.

9. rotary valve according to claim 1, it is characterized in that: described penetrating mechanism comprises at least one group of pretension screw (16), spring (17) and the decorative pearl on top of an official cap (18), wherein said pretension screw (16) is screwed into valve gap (15), described spring (17) is arranged in pretension screw (16), compress the decorative pearl on top of an official cap (18) of pretension screw (16) front end, the described decorative pearl on top of an official cap (18) against living spool (2), makes spool (2) keep closely cooperating with the inwall of valve body (1) under the pushing effect of described spring (17).

10. rotary valve according to claim 9, it is characterized in that: described penetrating mechanism is one group, is arranged at the center of described valve gap (15).

11. rotary valve according to claim 9 is characterized in that: described penetrating mechanism evenly arranges with equal intervals centered by the axis of valve body (1) for many groups.

12. rotary valve according to claim 1 is characterized in that: described rotary valve is Three-way rotary valve.