CN213707041U

CN213707041U - Rotary feeding valve structure for continuous concentrated phase negative pressure pneumatic conveying system

Info

Publication number: CN213707041U
Application number: CN202022376343.1U
Authority: CN
Inventors: 于雷
Original assignee: Changzhou Yisheng Electromechanical Technology Co ltd
Current assignee: Changzhou Yisheng Electromechanical Technology Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-07-16
Anticipated expiration: 2030-10-23

Abstract

The utility model relates to a rotary feeding valve structure for a continuous concentrated phase negative pressure pneumatic conveying system, which is arranged at the lower end of a feeding bin of the pneumatic conveying system and comprises a valve body and a rotatable blade group arranged in the valve body, wherein the valve body comprises a first flange fixedly connected with the lower end of the feeding bin and a second flange arranged below the valve body, and the valve body is hermetically connected with the feeding bin; rotatable blading is including arranging the dwang in the valve body in, the one end of dwang runs through the valve body and is connected with the rotation motor, the blade that fixedly connected with a plurality of equal circumference distribute on the outer circumference in the valve body is arranged in to the dwang, the outer terminal surface of blade has the detachable lath, be airtight connection between the lateral wall of lath and the inner wall of valve body, the material rotation outflow in the feed bin will be gone into to rotatable blading. The utility model has the advantages of as follows: avoid conveying the interior gas of main pipe and rise, guarantee the normal unloading work of material.

Description

Rotary feeding valve structure for continuous concentrated phase negative pressure pneumatic conveying system

The technical field is as follows:

the utility model belongs to pneumatic conveying system field, concretely relates to rotatory feed valve structure that continuous dense phase negative pressure pneumatic conveying system used.

Background art:

the negative pressure type pneumatic conveying is also called as air suction type conveying, a Roots vacuum pump is arranged at the tail end of a system, negative pressure is formed in a conveying main pipe by sucking air in the system, materials and the air enter the conveying main pipe and are conveyed into a discharge barrel, and the air is discharged into the atmosphere; the flowing state of the materials in the pneumatic conveying system is generally dense phase (dense phase) or dilute phase, wherein the particles of the materials pneumatically conveyed by dilute phase are distributed uniformly in the main conveying pipe, the materials move forwards in a suspension state by means of kinetic energy formed by high-speed airflow, the materials pneumatically conveyed by dense phase (dense phase) are conveyed forwards in the main conveying pipe in a non-suspension state, the solid-gas ratio is high, the moving speed is low compared with that of dilute phase pneumatic conveying, the friction between the materials and the inner wall of the main conveying pipe is reduced, and the materials are not easy to break, so that the dense phase negative pressure pneumatic conveying system is more and more popular in the market.

Among the dense-phase negative pressure pneumatic conveying system, rotatory feed valve structure links into the feed bin and carries the person in charge, the material that goes into in the feed bin flows in the valve body of rotatory feed valve structure along with the action of gravity, in the blade rotation along with the valve body and the flow direction main conveyor pipe, if the clearance is too big between the inner wall of blade and valve body, then the leakage quantity of air will increase, because there is the pressure differential in the upper and lower part of valve body, the air passes through the clearance and emits when the pressure differential is great, thereby influence the unloading effect of material.

The utility model has the following contents:

the utility model aims at overcoming the above not enough, provide a rotatory feed valve structure that continuous dense phase negative pressure pneumatic conveying system used, avoid carrying the intraductal gas of main pipe to emit, guarantee the normal unloading work of material.

The purpose of the utility model is realized through the following technical scheme: a rotary feeding valve structure for a continuous concentrated phase negative pressure pneumatic conveying system is arranged at the lower end of a feeding bin of the pneumatic conveying system and comprises a valve body and a rotatable blade group arranged in the valve body, wherein the valve body comprises a first flange fixedly connected with the lower end of the feeding bin and a second flange arranged below the valve body, and the valve body is connected with the feeding bin in a sealing manner;

rotatable blading is including arranging the dwang in the valve body in, the one end of dwang runs through the valve body and is connected with the rotation motor, the blade that fixedly connected with a plurality of equal circumference distribute on the outer circumference in the valve body is arranged in to the dwang, the outer terminal surface of blade has the detachable lath, be airtight connection between the lateral wall of lath and the inner wall of valve body, the material rotation outflow in the feed bin will be gone into to rotatable blading.

The utility model discloses a further improvement lies in: the strip comprises a U-shaped part and a soft body part, the U-shaped part covers the outer side end of the blade, the soft body part extends along the outer end face of the U-shaped part, the outer circumference of the soft body part is in contact with the inner wall of the valve body, the U-shaped part extends towards the corresponding blade to form a convex strip part, a groove part matched with the convex strip part is arranged in the blade, the width of the groove part is gradually reduced from outside to inside, the outer end face of the convex strip part is provided with a buffer layer, the U-shaped part is provided with rubber strips on two sides of the convex strip part, and the end part of the blade is provided.

The utility model discloses a further improvement lies in: the convex strip part comprises a cylinder and straight bodies arranged on two sides of the cylinder.

The utility model discloses a further improvement lies in: the lateral wall of valve body is connected with all presses the pipe, all presses the upper end of pipe to connect into the feed bin, all presses the lower extreme of pipe to connect the valve body.

The utility model discloses a further improvement lies in: the lateral wall of the inlet of the valve body is provided with a stop block, one side end of the stop block is connected with the lateral wall of the inlet of the valve body, the lower end of the stop block extends upwards along the inner wall of the valve body, and the stop block is provided with an inclined plane for guiding materials.

Compared with the prior art, the utility model has the following advantage:

1. the lath connected with the inner wall of the valve body in an airtight mode is adopted, so that the air tightness between the lath and the valve body is improved, and the influence on the discharging effect of materials when the pressure difference is large is avoided.

2. The soft body part of lath has the effect of improving with the valve body inner wall gas tightness, rotates when the blade, and the inner wall friction of soft body part and valve body, soft body part are earlier than the valve body wearing and tearing, avoid causing the damage to the inner wall of valve body, and the lath is dismantled in the quick installation of being convenient for with the mutual block of concave part to the tang.

3. The width of concave part is progressively decreased progressively from outside to inside, therefore the protruding strip portion when extrudeing to concave part, thereby progressively tighten up and play the fixed effect of block, the buffer layer has both increased the frictional force of protruding strip portion and concave part, guarantees the inseparable type of block, produces wearing and tearing to the outer terminal surface of protruding strip portion and the inner wall of concave part when avoiding the block to extrude again, and the rubber body and the cooperation of notch have further guaranteed the stability of being connected between lath and the blade, have the buffering guard action simultaneously.

4. All press the pipe to play the pressure differential effect that reduces between valve body and the pan feeding storehouse to valve body and pan feeding storehouse, thereby avoid the air to emit and influence the unloading effect.

5. The material of going into in the feed bin gets into in the valve body from top to bottom, and if the material gathers in the upper end of valve body under the effect of gravity, the material blocks up the feed inlet at the valve body easily to influenced the rotation of blade, and the slope of dog has better guidance quality to the material, and the material rotates along with the guide of inclined plane is partial to the blade of one side, avoids the material to concentrate the whereabouts and stops the rotation of blade.

Description of the drawings:

fig. 1 is a schematic view of the connection between the rotary feeding valve structure and the feeding bin for the continuous concentrated phase negative pressure pneumatic conveying system of the present invention.

Fig. 2 is a schematic view of the separation of the blades and the strips of the rotary feeding valve structure for the continuous concentrated phase negative pressure pneumatic conveying system of the present invention.

Fig. 3 is a sectional view taken along line a-a in fig. 2.

Reference numbers in the figures:

1, feeding into a storage bin;

21-valve body, 22-rotatable blade group, 23-first flange, 24-second flange, 25-pressure equalizing pipe, 26-stopper, 27-inclined surface, 221-rotating rod, 222-blade, 223-lath, 2231-U-shaped part, 2232-soft body part, 2233-convex strip part, 2234-groove part, 2235-buffer part, 2236-rubber strip, 2237-notch, 2238-cylinder and 2239-straight body.

The specific implementation mode is as follows:

in order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship, such as those based on the drawings, are only for convenience of description and simplification of description, and do not indicate or imply that the structures or units indicated must have a specific orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise specified or limited, terms such as "connected," "provided," "having," and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, or directly connected, and may be connected through an intermediate medium, and those skilled in the art can understand the basic meaning of the above terms in the present invention according to specific situations.

Fig. 1 shows an embodiment of a rotary feeding valve structure for a continuous concentrated phase negative pressure pneumatic conveying system of the present invention, the rotary feeding valve structure is disposed at a lower end of a material inlet bin 1 of the pneumatic conveying system, and includes a valve body 21 and a rotatable blade set 22 disposed in the valve body 21, the valve body 21 includes a first flange 23 fixedly connected to the lower end of the material inlet bin 1 and a second flange 24 disposed below the valve body 21, the valve body 21 is hermetically connected to the material inlet bin 1;

the rotatable blade group 22 comprises a rotating rod 221 arranged in the valve body 21, one end of the rotating rod 221 penetrates through the valve body 21 and is connected with a rotating motor, the rotating rod 221 is fixedly connected with a plurality of blades 222 distributed in an equal circumference mode on the outer circumference of the valve body 21, a detachable lath 223 is arranged on the outer end face of each blade 222, the outer side wall of each lath 223 is connected with the inner wall of the valve body 21 in an airtight mode, and the rotatable blade group 22 enables materials fed into the material bin 1 to flow out in a rotating mode.

In the application, the lath 223 is hermetically connected with the inner wall of the valve body 21, so that the air tightness between the lath 223 and the valve body 21 is improved, and the influence on the discharging effect of the material when the pressure difference is large is avoided.

Further, as shown in fig. 2, the strip 223 includes a U-shaped portion 2231 covering an outer end of the blade 222 and a soft portion 2232 extending along an outer end surface of the U-shaped portion 2231, an outer circumference of the soft portion 2232 contacts an inner wall of the valve body 21, the U-shaped portion 2231 extends toward the corresponding blade 222 to form a convex portion 2233, the blade 222 has a groove portion 2234 matching the convex portion 2233, a width of the groove portion 2234 decreases gradually from outside to inside, an outer end surface of the convex portion 2233 has a buffer layer 2235, the U-shaped portion 2231 has rubber strips 2236 on both sides of the convex portion 2233, and an end of the blade 222 has recesses 2237 on both sides of the groove portion 2234 for accommodating the rubber strips 2236.

The soft body 2232 of the strip 223 has an effect of improving airtightness with the inner wall of the valve body 21, when the blade 222 rotates, the soft body 2232 rubs against the inner wall of the valve body 21, the soft body 2232 is worn in advance of the valve body 21, damage to the inner wall of the valve body 21 is avoided, and the convex strip 2233 and the groove portion 2234 are clamped with each other, so that the strip 223 is convenient to install and detach quickly.

The width of the groove portions 2234 decreases gradually from outside to inside, so that when the convex portions 2233 are pressed toward the groove portions 2234, the convex portions 2233 are tightened gradually to achieve the effect of fastening and fixing, the buffer layer 2235 increases the friction force between the convex portions 2233 and the groove portions 2234, the tightness of the fastening is ensured, abrasion of the outer end surfaces of the convex portions 2233 and the inner walls of the groove portions 2234 during fastening and pressing is avoided, and the rubber bodies 2236 are matched with the concave portions 2237, so that the connection stability between the slats 223 and the blades 222 is further ensured, and meanwhile, the buffer protection effect is achieved.

Further, as shown in fig. 3, the raised strip 2233 includes a cylindrical body 2238 and straight bodies 2239 disposed on both sides of the cylindrical body 2238.

The special structure of the raised portions 2233 and the recessed portions 2234 cooperate with each other, so that a good lateral limiting effect is achieved during clamping, and the clamping effect is guaranteed.

Further, the side wall of the valve body 21 is connected with an equalizing pipe 25, the upper end of the equalizing pipe 25 is connected to the bunker 1, and the lower end of the equalizing pipe 25 is connected with the valve body 21.

The pipe 25 of all pressing plays the effect that reduces the pressure difference between valve body 21 and the pan feeding storehouse 1 to valve body 21 and pan feeding storehouse 1, thereby avoids the air to rise and influences the unloading effect.

Furthermore, the side wall of the inlet of the valve body 21 is provided with a stop 26, one side end of the stop 26 is connected with the side wall of the inlet of the valve body 21, the lower end of the stop 26 extends upwards along the inner wall of the valve body 21, and the stop 26 is provided with an inclined surface 27 for guiding the material.

The material that goes into in the feed bin 1 gets into in the valve body 21 from top to bottom, and if the material gathers at the upper end of valve body 21 under the effect of gravity, the material blocks up the feed inlet at valve body 21 easily to influenced the rotation of blade 222, and the inclined plane 27 of dog 26 has better guidance quality to the material, and the material rotates along with the guide of inclined plane 27 is partial to the blade 222 of one side, avoids the material to concentrate the whereabouts and stops the rotation of blade 222.

The present invention is not limited to the above-described embodiments, and the description of the embodiments and the description is only illustrative of the principles of the present invention, and various changes and modifications can be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pneumatic conveyor system's lower extreme position of income feed bin (1) is arranged in to rotatory feed valve structure that continuous dense phase negative pressure pneumatic conveyor system used which characterized in that: the device comprises a valve body (21) and a rotatable blade group (22) arranged in the valve body (21), wherein the valve body (21) comprises a first flange (23) fixedly connected with the lower end of the feed bin (1) and a second flange (24) arranged below the valve body (21), and the valve body (21) is connected with the feed bin (1) in a sealing manner;

rotatable blading (22) is including arranging dwang (221) in valve body (21) in, the one end of dwang (221) runs through valve body (21) and is connected with the rotation motor, blade (222) that a plurality of equipartition circumference of fixedly connected with distribute on the outer circumference of valve body (21) are arranged in dwang (221), the outer terminal surface of blade (222) has detachable lath (223), be airtight connection between the lateral wall of lath (223) and the inner wall of valve body (21), rotatable blading (22) will go into the material rotation outflow in feed bin (1).

2. The rotary feeding valve structure for the continuous concentrated phase negative pressure pneumatic conveying system according to claim 1, characterized in that: the batten (223) comprises a U-shaped portion (2231) covering the outer side end of the blade (222) and a soft body portion (2232) extending along the outer end face of the U-shaped portion (2231), the outer circumference of the soft body portion (2232) is in contact with the inner wall of the valve body (21), the U-shaped portion (2231) extends towards the corresponding blade (222) to form a convex strip portion (2233), a groove portion (2234) matched with the convex strip portion (2233) is arranged in the blade (222), the width of the groove portion (2234) is gradually decreased from outside to inside, the outer end face of the convex strip portion (2233) is provided with a buffer layer (2235), the U-shaped portion (2231) is provided with rubber strips (2236) on two sides of the convex strip portion (2233), and the end portion of the blade (222) is provided with notches (2237) for embedding the rubber strips (2236) on two sides of the groove portion (2234).

3. The rotary feeding valve structure for the continuous concentrated phase negative pressure pneumatic conveying system according to claim 2, characterized in that: the convex strip part (2233) comprises a cylinder (2238) and straight bodies (2239) arranged on two sides of the cylinder (2238).

4. The rotary feeding valve structure for continuous concentrated phase negative pressure pneumatic conveying system according to any one of claims 1 to 3, characterized in that: the lateral wall of valve body (21) is connected with and presses pipe (25), the upper end of pressing pipe (25) links into feed bin (1), valve body (21) is connected to the lower extreme of pressing pipe (25).

5. The rotary feeding valve structure for the continuous concentrated phase negative pressure pneumatic conveying system according to claim 4, characterized in that: the side wall of the inlet of the valve body (21) is provided with a stop block (26), one side end of the stop block (26) is connected with the side wall of the inlet of the valve body (21), the lower end of the stop block (26) extends upwards along the inner wall of the valve body (21), and the stop block (26) is provided with an inclined surface (27) for guiding materials.