CN209818757U

CN209818757U - Discharge valve

Info

Publication number: CN209818757U
Application number: CN201920618517.5U
Authority: CN
Inventors: 邵天君
Original assignee: Beijing Goldenteam Technology Co Ltd
Current assignee: Beijing Goldenteam Technology Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2019-12-20
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a discharge valve, which comprises a valve body, a main shaft rotor for discharging, a cleaning rotor for cleaning the main shaft rotor, a driving device, a transmission mechanism and an air sealing structure; the main shaft rotor is connected with a driving device and a transmission mechanism through a driving main shaft, the cleaning rotor is connected with the transmission mechanism through a driven shaft, the driving device drives the main shaft rotor to rotate and enables the cleaning rotor and the main shaft rotor to synchronously rotate through the transmission mechanism; the air sealing structure comprises a first air sealing structure and a second air sealing structure which are respectively arranged at the joints of the driving main shaft and the driven shaft and the valve body, the two air sealing structures are identical in structure, and the first sealing structure comprises a pair of sealing rings sleeved on the driving main shaft, a sealing cavity formed by the pair of sealing rings and an air duct which is arranged on the valve body and communicated with the sealing cavity. The utility model discloses can realize totally airtight unloading, the contact of effective separation material and pollutant and sealing washer has reduced the possibility of the in-process contaminated material of unloading.

Description

Discharge valve

Technical Field

The utility model belongs to the technical field of material (powder) conveying equipment, especially, relate to a discharge valve.

Background

The material (powder) is carried and can be made the material in time have enough to meet the need, ensures the reasonable use of material, and the work of discharging after the powder material transport in trades such as food, medicine is also especially important, and current powder material discharge valve can realize the quantitative discharge of material, and it is convenient to use.

At present, powder materials can remain among valve flaps of a common discharge valve in the process of conveying powder materials, and the powder materials can not be cleaned, so that the residual powder materials can be agglomerated for a long time to influence the conveying capacity of the discharge valve, and even agglomeration can occur to fall into the powder materials to influence the product quality; meanwhile, for the material with high viscosity, the material is easy to adhere to the valve clack and cannot be discharged in the discharging (blanking) process due to certain viscosity, so that the quantification of the next period is influenced, the material is accumulated too much, the blockage is easily caused, the valve clack cannot operate, the equipment is greatly damaged, and the conveying effect of the material is seriously influenced.

The Chinese patent application 201820110566.3 discloses a sticky material discharge valve, which adopts a built-in rotary scraper to ensure that the rotary scraper can clean the materials adhered on a valve clack, ensure the normal discharge of the subsequent materials and realize the continuity of material discharge and the use safety of equipment; although the viscous material discharge valve in the patent application can realize continuous discharge of materials with high viscosity, the rotary scraper blade and the sealing at two ends of the valve clack in the viscous material discharge valve cannot completely separate the contact with the materials, and pollution can occur in the pharmaceutical industry and the food industry; in addition, there is the structure occupation space ratio great in the sizing discharge valve in this patent application, compact enough and can not realize the quick dismantlement of pairing rotation scraper blade and valve clack, can not realize the problem of no dead angle clearance to inside cavity.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a discharge valve to solve at least one technical problem who exists among the prior art. The utility model provides a discharge valve can carry out the feed at the material and the in-process of unloading, carries out the automatically cleaning to equipment inside, can realize totally airtight unloading simultaneously, and effective separation pollutant gets into sealed chamber and has effectively prevented the contact of material with the sealing washer, has reduced the possibility of the in-process contaminated material of unloading.

In order to achieve the above object, the present invention provides a discharge valve, which comprises a valve body with a feeding port and a discharging port arranged oppositely, a main shaft rotor arranged inside the valve body for discharging, a cleaning rotor for cleaning the main shaft rotor, a driving device for driving the main shaft rotor, a transmission mechanism and a gas sealing structure; the main shaft rotor is connected with the driving device and the transmission mechanism through a driving main shaft, the cleaning rotor is connected with the transmission mechanism through a driven shaft, and the cleaning rotor and the main shaft rotor synchronously rotate through the transmission mechanism; the air sealing structure comprises a first air sealing structure arranged at the joint of the driving main shaft and the valve body and a second air sealing structure arranged at the joint of the driven shaft and the valve body; the first air sealing structure comprises a first sealing ring and a second sealing ring which are sleeved on the driving main shaft, a first sealing cavity is formed between the first sealing ring and the second sealing ring, the second air sealing structure comprises a third sealing ring and a fourth sealing ring which are sleeved on the driven shaft, and a second sealing cavity is formed between the third sealing ring and the fourth sealing ring; a first vent pipeline and a second vent pipeline are arranged on the valve body, one end of each of the first vent pipeline and the second vent pipeline is communicated with the first sealing cavity and the second sealing cavity respectively, and the other end of each of the first vent pipeline and the second vent pipeline is used for being connected with an air source.

Preferably, the drive means and the transmission mechanism are arranged on the same side of the spindle rotor and the cleaning rotor.

Preferably, the valve body sequentially comprises a first casing part and a second casing part from left to right, the transmission mechanism is arranged inside the first casing part, the spindle rotor and the cleaning rotor are arranged inside the second casing part, the first casing part is connected to the left end of the second casing part, and the first casing part and the second casing part are separated by a left end cover arranged at the left end of the second casing part; the main shaft rotor is installed at one end of the driving main shaft, and the transmission mechanism and the driving device are sequentially installed at the other end of the driving main shaft through a left end cover of the second shell part; the cleaning rotor is installed at one end of the driven shaft, and the transmission mechanism is installed at the other end of the driven shaft penetrating through the left end cover of the second shell.

Preferably, the first and second vent conduits open in a left end cap of the second housing part; the first sealing ring and the third sealing ring are respectively arranged on the right sides of the second sealing ring and the fourth sealing ring, and sealing check rings are arranged on the first sealing ring and the third sealing ring in the circumferential direction.

Preferably, the feed inlet and the discharge outlet are respectively arranged at the top and the bottom of the second housing part; and/or the driving main shaft and the driven shaft are fixed on the first shell part through bearings.

Preferably, a right end cover detachably connected with the second housing part is arranged at the right end of the second housing part; a discharge port end cover detachably connected with the second shell part is arranged at the bottom of the second shell part; and/or the main shaft rotor and the cleaning rotor are detachably mounted on the driving main shaft and the driven shaft, respectively.

Preferably, the right end cover and/or the discharge port end cover of the second housing part are detachably connected with the second housing part through a quick-assembly clamp.

Preferably, the spindle rotor is a star-shaped structure formed by connecting a plurality of concave arc-shaped structures, the cleaning rotor is arranged at the lower part of the spindle rotor and provided with two symmetrical long arms, and the long arms of the cleaning rotor are tangent to the arc surface of the arc-shaped structure of the spindle rotor.

Preferably, the driving device is a reduction motor.

Preferably, the transmission mechanism is a gear transmission mechanism, and the gear transmission mechanism comprises a driving gear and a driven gear which are meshed with each other; the driving gear is installed on the driving main shaft, and the driven gear is installed on the driven shaft.

The utility model discloses following beneficial effect has at least:

(1) the discharge valve in include drive main shaft with the driven shaft with the junction (the sealed department) of valve body is provided with suitable airtight structure, can blow clean gaseous formation airtight to sealed intracavity through the vent pipe who sets up, can prevent effectively that the pollutant from getting into the sealed chamber, also prevented the material simultaneously and got into the sealed chamber of sealed department, so better prevent material and sealing washer contact, reduced the dead angle, reduced the possibility of unloading in-process contaminated material and avoided the material to accumulate in sealed department, eliminated the problem that sealed department blockked up, discharge valve specially adapted wet material in fields such as medicine and food is unloaded (blanking).

(2) In some preferred embodiments of the present invention, the driving device and the transmission mechanism are disposed at the same side of the discharge bin, so that the discharge valve of the present invention has the advantages of compact structure, small layout space, convenient detachment of the main shaft rotor and the cleaning rotor, etc.; the main shaft rotor clean rotor respectively with the drive main shaft drive shaft the driven shaft can be dismantled and be connected, the right-hand member lid with the discharge gate end cover all with the second shell portion can be dismantled and be connected, can realize dismantling main shaft rotor and clean rotor fast, and convenient the washing can realize no dead angle clearance completely to the inside cavity of unloading the silo.

(3) The utility model discloses in some preferred embodiments the discharge valve has the automatically cleaning simultaneously, can realize totally airtight unloading, effectively avoid unloading in-process contaminated material and compact structure, quick detachable clean, can realize completely that the discharge bin does not have advantages such as dead angle clearance.

Drawings

The drawings of the present invention are provided for illustrative purposes only, and the proportion and the number of each component in the drawings are not necessarily consistent with those of actual products.

Fig. 1 is a schematic sectional view of a discharge valve according to an embodiment of the present invention.

Fig. 2 is a sectional view taken along line a-a shown in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

In the figure: 1: a drive device; 2: a driving gear; 3: a driven gear; 4: a valve body; 4-1: a first housing section; 4-2: a second housing section; 5: a first gas seal structure; 5-1: a first seal ring; 5-2: a second seal ring; 5-3: a first sealed chamber; 5-4: a first vent conduit; 6: a sealing retainer ring; 7: a feed inlet; 8: driving the main shaft; 9: quickly mounting a clamp; 10: a right end cap; 11: a driven shaft; 12: a main shaft rotor; 13: cleaning the rotor; 13-1: a long arm; 14: a discharge port; 15: a left end cap; 16: a second vent conduit; 17: and sealing the joint in an airtight manner.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following description will clearly and completely describe the technical solutions of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a discharge valve, and figure 1 is a schematic sectional structure diagram of the discharge valve in a specific embodiment of the utility model; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; fig. 3 is an enlarged view of a portion B in fig. 1, wherein arrows in fig. 3 indicate the airflow direction.

In the present invention, for example, as shown in fig. 1, the discharge valve includes a valve body 4 having a feed inlet 7 and a discharge outlet 14 which are oppositely disposed, a spindle rotor 12 (feeding rotor) for discharging and a cleaning rotor 13 for cleaning the spindle rotor 12 which are disposed inside the valve body 4, a driving device 1 for driving the spindle rotor 12, a transmission mechanism, and a gas sealing structure; the main shaft rotor 12 is connected with the driving device 1 and the transmission mechanism through a driving main shaft 8, the cleaning rotor 13 is connected with the transmission mechanism through a driven shaft 11, the cleaning rotor 13 and the main shaft rotor 12 synchronously rotate through the transmission mechanism, and the driving device 1 drives the main shaft rotor 12 to rotate and enables the cleaning rotor 13 and the main shaft rotor 12 to synchronously rotate through the transmission mechanism; the air sealing structure comprises a first air sealing structure 5 arranged at the joint (sealing part) of the driving main shaft 8 and the valve body 4 and a second air sealing structure arranged at the joint of the driven shaft 11 and the valve body 4; for example, as shown in fig. 3, the first air sealing structure 5 includes a first sealing ring 5-1 and a second sealing ring 5-2 sleeved on the driving main shaft 8, a first sealing cavity 5-3 is formed between the first sealing ring 5-1 and the second sealing ring 5-2, the second air sealing structure includes a third sealing ring and a fourth sealing ring sleeved on the driven shaft 11, and a second sealing cavity is formed between the third sealing ring and the fourth sealing ring; the valve body 4 is provided with a first vent pipe 5-4 and a second vent pipe 16, one end of the first vent pipe 5-4 and one end of the second vent pipe 16 are respectively communicated with the first sealing cavity 5-3 and the second sealing cavity, and the other ends of the first vent pipe 5-4 and the second vent pipe 16 are respectively used for being connected with an air source (for example, clean compressed air).

In the present invention, the feed inlet 7 and the discharge outlet 14 are respectively arranged at the top and the bottom of the valve body 4; in the present invention, the first air duct 5-4 and the second air duct 16 are used for ventilation; in the present invention, the driving main shaft 8 may be, for example, a component included in the driving device, and the driven shaft 11 may be, for example, a component included in the transmission mechanism; the utility model has no special limitation on the structures of the spindle rotor 12 and the cleaning rotor 13, and the structures of the spindle rotor and the cleaning rotor can be respectively adopted by a feeding rotor for discharging and a cleaning rotor for scraping materials in the existing discharging valve; the utility model discloses in, first airtight structure with the structure that the airtight structure of second adopted is the same.

It is specifically stated that the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the specific meaning of the above terms in the utility model can be understood as the case may be, by those of ordinary skill in the art. In the present invention, for example, the first vent pipe and the second vent pipe may be collectively referred to as a vent pipe, the first seal ring, the second seal ring, the third seal ring, and the fourth seal ring may be collectively referred to as a seal ring, and the first seal cavity and the second seal cavity may be collectively referred to as a seal cavity.

When the discharge valve works, the driving device 1 drives the main shaft rotor 12 to rotate through the driving main shaft 8, and simultaneously drives the cleaning rotor 13 to rotate through the transmission mechanism, and the cleaning rotor 13 and the main shaft rotor 12 synchronously rotate through the transmission mechanism; in the utility model, after the material enters the space of the spindle rotor 12 from the feed inlet 7, along with the rotation of the driving spindle 8, when the spindle rotor 12 rotates to the position of the discharge port 14, the cleaning rotor 13 and the spindle rotor 12 are meshed with each other to scrape the material off by the cleaning rotor 13, so that the discharge valve of the utility model can automatically clean the inside of the equipment in the process of feeding and discharging the material; the utility model discloses drive main shaft 8 with the driven shaft 11 with the junction (the sealed department) of valve body 4 is provided with suitable airtight structure, in the working process, can blow clean gas to sealed intracavity through the vent pipe who sets up, gas blows to the left and right sides respectively (the air current direction is shown as the arrow in figure 3) after arriving sealed chamber (in the cavity of sealing washer and drive main shaft or driven shaft) and forms airtight, can prevent effectively that pollutant (the pollutant in the unloading storehouse outside) from getting into sealed chamber, also prevented during the material gets into sealed chamber of sealed department simultaneously, better like this prevent material and sealing washer contact, reduced the dead angle, reduced the possibility of unloading in-process polluted material and avoided the material to accumulate and collect together in sealed department, eliminated the problem that sealed department blockked up, so, the utility model provides a discharge valve has solved the sealed not enough of sealing at feed rotor and clean rotor both ends among the current discharge valve (star valve) well Can completely separate the contact with the materials, and can cause pollution problems in the pharmaceutical industry and the food industry. Discharge valve can realize totally airtight unloading, has effectively blockked the pollutant and has got into sealed chamber and effectively prevented the contact of material with the sealing washer, effectively blockked the contact of material with pollutant and sealing washer promptly, reduced the possibility of the in-process contaminated material of unloading, wet material in the fields such as specially adapted medicine and food is unloaded (blanking).

According to some preferred embodiments, the first air duct 5-4 and the second air duct 16 are each provided with an airtight joint 17, for example, as shown in fig. 1; the first vent line 5-4 and the second vent line 16 are connected to a gas source via the gas tight fitting 17.

According to some preferred embodiments, drive arrangement 1 with drive mechanism sets gradually spindle rotor 12 with clean rotor 13 is same one side, so can make discharge valve compact structure, reduce the overall arrangement space, convenient to detach spindle rotor and clean rotor.

According to some preferred embodiments, the valve body 4 comprises a first housing part 4-1 and a second housing part 4-2 in sequence from left to right (from left to right as shown in fig. 1), the transmission mechanism is arranged inside the first housing part 4-1, the spindle rotor 12 and the cleaning rotor 13 are arranged inside the second housing part 4-2, the first housing part 4-1 is connected to the left end of the second housing part 4-2, and the first housing part 4-1 and the second housing part 4-2 are separated by a left end cover 15 arranged at the left end of the second housing part 4-2; the spindle rotor 12 is mounted at one end of the driving spindle 8, and the transmission mechanism and the driving device 1 are sequentially mounted at the other end of the driving spindle through a left end cover 15 of the second housing part 4-2; the cleaning rotor 13 is installed at one end of the driven shaft 11, and the transmission mechanism is installed at the other end of the driven shaft through the left end cover 15 of the second housing part 4-2. In the present invention, when the valve body 4 includes the first housing portion 4-1 and the second housing portion 4-2, the first air sealing structure 5 and the second air sealing structure are respectively disposed at the junction of the driving main shaft 8, the driven shaft 11 and the left end cover 15, for example, as shown in fig. 1.

In the utility model, the first shell part 4-1 is used for protecting the transmission mechanism, ensuring the safety of the discharge valve when in use, and the second shell part 4-2 is used as a discharge bin for discharging materials, in the utility model, the space in which the main shaft rotor is arranged in the discharge bin is also taken as a feeding bin, the space in which the cleaning rotor is arranged in the discharge bin is taken as a cleaning bin, and the feeding bin is communicated with the cleaning bin; the utility model discloses preferably drive arrangement with built-in have drive mechanism's first shell portion sets up the homonymy of second shell portion is guaranteeing in the discharge valve safety in utilization, can make discharge valve compact structure, overall arrangement space are little and convenient to detach main shaft rotor and clean rotor.

According to some preferred embodiments, the first and second vent ducts 5-4, 16 open in a left end cap 15 of the second housing part 4-2, for example, as shown in fig. 1; the first seal ring 5-1 and the third seal ring are respectively arranged on the right sides of the second seal ring 5-2 and the fourth seal ring, and a seal retainer ring 6 is arranged on the circumferential direction of the first seal ring 5-1 and the third seal ring, for example, as shown in fig. 3. The utility model discloses in, the setting of sealing ring 6 can be right first sealing washer 5-1 with the circumference of third sealing washer is fixed a position, further guarantees sealed effect.

According to some preferred embodiments, the feed opening 7 and the discharge opening 14 are provided at the top and bottom of the second housing part 4-2, respectively; and/or the driving main shaft 8 and the driven shaft 11 are fixed on the first shell part 4-1 through bearings, so that the mounting stability of the driving main shaft 8 and the driven shaft 11 is increased; for example, in the present invention, the driving main shaft 8 and the driven shaft 11 are fixed to the first housing portion 4-1 through a pair of bearings.

According to some preferred embodiments, the right end of the second housing part 4-2 is provided with a right end cap 10 detachably coupled to the second housing part 4-2; a discharge port end cover detachably connected with the second shell part 4-2 is arranged at the bottom of the second shell part 4-2; and/or the spindle rotor 12 and the cleaning rotor 13 are detachably mounted on the drive spindle 8 and the driven shaft 11, respectively. The utility model discloses in, preferably drive arrangement 1 with drive mechanism sets up same one side at the discharge bin, and preferably spindle rotor 12 clean rotor 13 respectively with drive spindle 8 the connection can be dismantled to driven shaft 11, right-hand member lid 10 with the discharge gate end cover all with second shell 4-2 can be dismantled and connect, so, can realize the quick dismantlement to spindle rotor and clean rotor, convenient the washing can realize no dead angle clearance completely to the inside cavity of discharge bin. In the present invention, the left end cap 15, the right end cap 10 and the discharge port end cap refer to the housing end caps located at the left end, the right end and the bottom of the second housing part 4-2 as shown in fig. 1, respectively.

According to some preferred embodiments, the right end cap 10 and/or the spout end cap of the second housing part 4-2 are detachably connected to the second housing part 4-2 by means of a snap-fit clip 9. In the utility model, preferably, the right end cover and/or the discharge port end cover adopt the quick-assembly structure to be detachably connected with the second housing part, when the discharge valve works to a preset time node, the machine is stopped, the quick-assembly clamp at the right end and/or the bottom of the second housing part is removed, the quick-assembly end cover (the right end cover and/or the discharge port end cover) of the second housing part can be removed, and meanwhile, the driving device and the transmission mechanism are arranged at the same side of a discharge bin (the second housing part), so that the spindle rotor and the cleaning rotor can be conveniently removed, and the discharge valve and the material contact part can be thoroughly cleaned; the quick-assembly structure is particularly suitable for occasions requiring frequent cleaning, such as food and pharmacy.

According to some preferred embodiments, the main shaft rotor 12 and the cleaning rotor 13 are respectively sleeved on the driving main shaft 8 and the driven shaft 11, a threaded hole for connecting a screw is formed in one end of the driving main shaft 8 and the driven shaft 11, a gasket groove for clamping a gasket is formed in the center of the main shaft rotor 12 and the cleaning rotor 13, and the main shaft rotor 12 and the cleaning rotor 13 are respectively axially limited on the driving main shaft 8 and the driven shaft 11 through a gasket and a screw; the utility model discloses in, the preferred step packing ring of packing ring is spacing blocking main shaft rotor 12 and clean rotor 13 respectively through the step on the packing ring to reach the spacing effect of axial.

According to some preferred embodiments, the spindle rotor 12 is a star-shaped structure connected by a plurality of concave arc-shaped structures, the cleaning rotor 13 is arranged at the lower part of the spindle rotor 12, the cleaning rotor 13 has two symmetrical long arms 13-1, and the long arms 13-1 of the cleaning rotor 13 are tangent to the arc-shaped surfaces of the arc-shaped structures of the spindle rotor 12, for example, as shown in fig. 2. The utility model discloses in, the length of long arm 13-1 with the radius of the arc structure place circle of main shaft rotor 12 is the same, namely makes two adjacent arc structures on main shaft rotor 12 can rotate the in-process and can correspond respectively with two long arm 13-1, thereby the realization will every arc structure on main shaft rotor 12 is in whole clean up after main shaft rotor 12 single week rotates ensures that follow-up material is unloaded and is gone on continuously.

According to some preferred embodiments, two cleaning rotors 13 are oppositely mounted at one end of the driven shaft 11 on the right side of the left end cover 15, and the long arm 13-1 of one cleaning rotor 13 is connected with the long arm 13-1 of the other cleaning rotor 13 through two parallel and symmetrically arranged scraping strips.

According to some preferred embodiments, the diameter of the discharge opening 14 is larger than the total length of the two long arms 13-1 of the cleaning rotor 13, so that the rotation of the cleaning rotor 13 can be effectively ensured not to be blocked; in the present invention, the driven shaft 11 on which the cleaning rotor 13 is mounted may be located on the center line of the discharge port 14, for example.

According to some preferred embodiments, the drive means 1 is a reduction motor, preferably a variable frequency motor reducer.

According to some preferred embodiments, the geared motor further has a motor base whose position is adjustable.

According to some preferred embodiments, the transmission is a gear transmission comprising a driving gear 2 (driving engagement gear) and a driven gear 3 (driven engagement gear) in engagement; the driving gear 2 is installed on the driving main shaft 8, and the driven gear 3 is installed on the driven shaft 11.

In some specific embodiments, the variable frequency motor reducer drives the main shaft rotor 12 to rotate through the driving main shaft 8, the driving meshing gear on the driving main shaft 8 also rotates, the driven shaft 11 is provided with the driven meshing gear and the cleaning rotor 13, and after the driving meshing gear is meshed with the driven meshing gear, the rotation of the driving main shaft 8 can drive the cleaning rotor 13 to rotate; the driving main shaft 8 and the driven shaft 11 are fixed on the first shell part 4-1 through bearings, after materials enter a semicircular space of the main shaft rotor 12 from the feeding hole 7, along with the rotation of the driving main shaft 8, when the main shaft rotor 12 rotates to the position of the discharging hole 14, the long arm 13-1 of the cleaning rotor 13 is meshed with the main shaft rotor 12 through a gear of a gear transmission mechanism, and the long arm 13-1 of the cleaning rotor 13 scrapes off the materials through the mutual meshing with the main shaft rotor 12; because the proper air sealing structure is arranged at the joint (sealing part) of the driving main shaft 8 and the driven shaft 11 and the valve body 4, air is blown (inflated) into the sealing cavity through the air duct to form air sealing in the working process, so that pollutants on the bearing side can be effectively prevented from entering the sealing cavity, meanwhile, materials are prevented from entering the sealing cavity, the contact between the materials and the sealing ring is avoided, and the possibility of material pollution is reduced.

It is specifically noted that the terms "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on the orientation or positional relationship shown in fig. 1 for ease of description and simplicity of description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore should not be construed as limiting the invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A discharge valve which is characterized in that:

the device comprises a valve body with a feeding hole and a discharging hole which are oppositely arranged, a main shaft rotor which is arranged in the valve body and used for discharging, a cleaning rotor which is used for cleaning the main shaft rotor, a driving device which is used for driving the main shaft rotor, a transmission mechanism and a gas sealing structure;

the main shaft rotor is connected with the driving device and the transmission mechanism through a driving main shaft, the cleaning rotor is connected with the transmission mechanism through a driven shaft, and the cleaning rotor and the main shaft rotor synchronously rotate through the transmission mechanism;

the air sealing structure comprises a first air sealing structure arranged at the joint of the driving main shaft and the valve body and a second air sealing structure arranged at the joint of the driven shaft and the valve body;

the first air sealing structure comprises a first sealing ring and a second sealing ring which are sleeved on the driving main shaft, a first sealing cavity is formed between the first sealing ring and the second sealing ring, the second air sealing structure comprises a third sealing ring and a fourth sealing ring which are sleeved on the driven shaft, and a second sealing cavity is formed between the third sealing ring and the fourth sealing ring;

a first vent pipeline and a second vent pipeline are arranged on the valve body, one end of each of the first vent pipeline and the second vent pipeline is communicated with the first sealing cavity and the second sealing cavity respectively, and the other end of each of the first vent pipeline and the second vent pipeline is used for being connected with an air source.

2. A discharge valve according to claim 1, characterized in that:

the driving device and the transmission mechanism are arranged on the same side of the main shaft rotor and the cleaning rotor.

3. A discharge valve according to claim 1, characterized in that:

the valve body sequentially comprises a first shell part and a second shell part from left to right, the transmission mechanism is arranged inside the first shell part, the spindle rotor and the cleaning rotor are arranged inside the second shell part, the first shell part is connected to the left end of the second shell part, and the first shell part and the second shell part are separated by a left end cover arranged at the left end of the second shell part;

the main shaft rotor is installed at one end of the driving main shaft, and the transmission mechanism and the driving device are sequentially installed at the other end of the driving main shaft through a left end cover of the second shell part;

the cleaning rotor is installed at one end of the driven shaft, and the transmission mechanism is installed at the other end of the driven shaft penetrating through the left end cover of the second shell.

4. A discharge valve according to claim 3, characterised in that:

the first vent conduit and the second vent conduit open in a left end cap of the second housing portion;

the first sealing ring and the third sealing ring are respectively arranged on the right sides of the second sealing ring and the fourth sealing ring, and sealing check rings are arranged on the first sealing ring and the third sealing ring in the circumferential direction.

5. A discharge valve according to claim 3, characterised in that:

the feed inlet and the discharge outlet are respectively arranged at the top and the bottom of the second shell part; and/or

The driving main shaft and the driven shaft are fixed on the first shell part through bearings.

6. A discharge valve according to claim 3, characterised in that:

a right end cover detachably connected with the second shell part is arranged at the right end of the second shell part;

a discharge port end cover detachably connected with the second shell part is arranged at the bottom of the second shell part; and/or

The main shaft rotor and the cleaning rotor are detachably mounted on the driving main shaft and the driven shaft, respectively.

7. A discharge valve according to claim 6, characterized in that:

the right-hand member end cover and/or discharge gate end cover of second shell portion pass through fast-assembling clamp with the connection can be dismantled to the second shell portion.

8. A discharge valve according to any of claims 1 to 7, characterized in that:

the spindle rotor is a star-shaped structure formed by connecting a plurality of concave arc-shaped structures, the cleaning rotor is arranged at the lower part of the spindle rotor and provided with two symmetrical long arms, and the long arms of the cleaning rotor are tangent to the arc surface of the arc-shaped structure of the spindle rotor.

9. A discharge valve according to any of claims 1 to 7, characterized in that:

the driving device is a speed reducing motor.

10. A discharge valve according to any of claims 1 to 7, characterized in that:

the transmission mechanism is a gear transmission mechanism, and the gear transmission mechanism comprises a driving gear and a driven gear which are meshed with each other;

the driving gear is installed on the driving main shaft, and the driven gear is installed on the driven shaft.