CN217584899U

CN217584899U - Vacuum tube solar heat collecting system negative pressure preventing device

Info

Publication number: CN217584899U
Application number: CN202220507114.5U
Authority: CN
Inventors: 吴松华
Original assignee: Guangdong Yijurun New Energy Co ltd
Current assignee: Guangdong Yijurun New Energy Co ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-10-14
Anticipated expiration: 2032-03-09

Abstract

The utility model relates to a prevent negative pressure equipment technical field, provide vacuum tube solar collecting system's negative pressure equipment of preventing, including preventing negative pressure valve main part, seal assembly and valve gap, the inside of preventing negative pressure valve main part is provided with seal assembly, and seal assembly's inside is provided with guide structure, prevents that the inside bottom of negative pressure valve main part is provided with filtration, prevents that the top of negative pressure valve main part is provided with the valve gap, and the inside both sides of valve gap are provided with the dismouting structure, and filtration includes supporting shoe, filter screen, slot, inserted block, recess and spring buckle. The utility model discloses a be provided with filtration, at the inside bottom installation filter screen of anti-negative pressure valve main part, utilize the filter screen can carry out certain filtration to the inside water of inflow anti-negative pressure valve main part, through the filtration to aquatic impurity etc. inside having prevented getting into anti-negative pressure valve main part such as too much impurity to a certain extent, lead to its inside impurity to pile up more to the problem that influences its pressure release efficiency appears.

Description

Vacuum tube solar heat collecting system negative pressure preventing device

Technical Field

The utility model relates to a prevent negative pressure equipment technical field, in particular to vacuum tube solar collecting system prevents negative pressure equipment.

Background

The vacuum tube solar heat collecting system utilizes the heat tube type vacuum heat collecting tube to absorb solar radiation energy, uses the inorganic heat transfer element as a heat transfer medium, and further heats water in a header or a water tank, in order to prevent the phenomenon of concave crack and the like of a container or a pipeline of the vacuum tube solar heat collecting system under the action of negative pressure, the negative pressure preventing device needs to be used, when the negative pressure or vacuum is gradually increased due to the running or stopping of the system of the pipeline or the container, the valve can be automatically opened to destroy the vacuum effect, so that the pipeline and other equipment cannot be shriveled or concave crack and the like, and the safety of the equipment is protected.

This kind of negative pressure preventing device on the market is various today, can satisfy people's user demand basically, but still has certain problem: when the traditional negative pressure preventing device is used, the filtering treatment for inflow water is often lacked, when the device is used for a long time, impurities in the water continuously enter the device, and if the impurities are accumulated for a long time, the use of the device can be influenced, so that the negative pressure preventing device needs to be improved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a vacuum tube solar collecting system prevents negative pressure device for solve current vacuum tube solar collecting system prevent that negative pressure device lacks the defect to the filtration of inflow water.

(II) contents of the utility model

In order to solve the technical problem, the utility model provides a following technical scheme: the negative pressure preventing device of the vacuum tube solar heat collecting system comprises a negative pressure preventing valve main body, a sealing assembly and a valve cover, wherein the sealing assembly is arranged inside the negative pressure preventing valve main body;

a guide structure is arranged inside the sealing assembly, and a filtering structure is arranged at the bottom end inside the anti-negative pressure valve main body;

the top of the anti-negative pressure valve main body is provided with a valve cover, and the two sides inside the valve cover are provided with dismounting structures.

Preferably, the filtering structure comprises a supporting block, a filtering screen, a slot, an inserting block, a groove and a spring buckle, the supporting block is fixed at the bottom of the interior of the main body of the negative pressure prevention valve, the filtering screen is arranged at the bottom of the supporting block, the inserting block is fixed at the outer side of the top end of the filtering screen, the groove is formed in the outer side of the inserting block, the slot is formed in the outer side of the bottom end of the supporting block, the inserting block is inserted into the slot, the spring buckle is arranged on one side of the interior of the slot, and the spring buckle is inserted into the groove. If the area inside the negative pressure prevention valve main body is reduced, the air quantity entering the system through the negative pressure prevention valve main body is possibly reduced, so that the negative pressure prevention effect of the device is influenced, when water enters the device through the bottom of the negative pressure prevention valve main body, the filter screen can perform certain degree of filtering treatment on flowing water, through filtering impurities in the water, the impurities are prevented from being deposited after entering the negative pressure prevention valve main body to a certain degree, so that the problem of reducing the area inside the negative pressure prevention valve main body is solved, the filter screen is in a detachable design, can be detached periodically for replacement or cleaning, so as to ensure the filtering effect of the filter screen, when the filter screen is detached, the filter screen is pulled to drive the insertion block to be separated from the inside of the insertion slot, the detachment of the filter screen can be completed, when the filter screen is mounted, the insertion block is clamped into the inside of the insertion slot, the spring buckle is used for bouncing into the inside of the groove, and the fixed mounting of the filter screen can be completed.

Preferably, the inner diameter of the slot is larger than the outer diameter of the insertion block, and the slot and the insertion block form a clamping structure.

Preferably, the insert block is provided with a group, and the cross section of the insert block is designed in an annular shape.

Preferably, guide structure includes guide way, guide post and ball, the guide way is seted up in seal assembly's inside, the inside of guide way is provided with the guide post, and the top and the valve gap fixed connection of guide post, the inner wall of guide way inlays and is equipped with the ball. When seal assembly is receiving rivers pressure effect or air thrust effect to remove, the guide way can follow seal assembly and slide in the outside of guide post, the guide post can play the effect of direction to the removal of guide way, utilize guide way and guide post to mutually support, thereby lead to seal assembly's removal, make its can be more stable reciprocate, and, the ball of guide way inner wall and the outer wall contact of guide post, utilize the ball can reduce the frictional force when the guide way is direct and the contact of guide post outer wall, thereby make that the guide way can be better slide in the guide post outside.

Preferably, the balls are provided with a plurality of groups, and the plurality of groups of balls are distributed on the inner wall of the guide groove at equal intervals.

Preferably, the dismouting structure is including leading to groove, fixed pin, fixed slot, spacing groove and stopper, lead to the groove and offer in the inside both sides of valve gap, the inside through that leads to the groove has the fixed pin, inside the bottom of fixed pin extended to the fixed slot, and the fixed slot offers in the outside on preventing negative pressure valve main part top, the spacing groove has been seted up in the outside of valve gap bottom, the inside in spacing groove is inserted and is equipped with the stopper, and the stopper bottom with prevent the top fixed connection of negative pressure valve main part. The staff overhauls or when maintaining to preventing negative pressure valve main part inside, can pull down the valve gap, only need to unscrew the fixed pin from the inside of fixed slot, then the block between separation spacing groove and the stopper, alright accomplish the dismantlement to the valve gap, when carrying out the installation of valve gap, with spacing groove and stopper block, utilize the block of spacing groove and stopper, can carry out spacing processing to the mounted position of valve gap, then with the inside of fixed pin screw in fixed slot, the fixed pin can extrude the valve gap and make its inseparabler and prevent the laminating of negative pressure valve main part, to sum up the operation and just accomplished the dismouting to the valve gap.

(III) advantageous effects

The utility model provides a vacuum tube solar collecting system prevents negative pressure device, its advantage lies in: the filter structure is arranged, the filter screen is arranged at the bottom end in the anti-negative pressure valve main body, water flowing into the anti-negative pressure valve main body can be filtered to a certain degree by the filter screen, and impurities in the water are filtered, so that excessive impurities are prevented from entering the anti-negative pressure valve main body to a certain degree, the impurities in the anti-negative pressure valve main body are accumulated more, and the pressure relief efficiency of the anti-negative pressure valve main body is influenced;

by arranging the guide structure, when the sealing assembly in the anti-negative pressure valve main body moves, the guide groove can slide on the guide column, the movement of the sealing assembly can be more stable under the guide action of the guide groove and the guide column, and the problem of unstable movement of the sealing assembly is prevented to a certain extent by the guide treatment of the movement of the sealing assembly;

through being provided with the dismouting structure, with the fixed pin from the inside of fixed slot unscrewing, then with the block separation between spacing groove and the stopper, alright accomplish the dismantlement to the valve gap, with spacing groove and stopper block, with the fixed pin screw in fixed slot inside alright accomplish to the fixed mounting of valve gap, to the convenient dismouting of valve gap, made things convenient for staff's later stage to the inside maintenance or the maintenance of anti-negative pressure valve main part.

Drawings

In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the front cross-sectional structure of the present invention;

fig. 2 is a schematic view of the bottom-view appearance structure of the present invention;

FIG. 3 is a schematic view of the front cross-sectional structure of the detachable structure of the present invention;

fig. 4 is a schematic front sectional view of the guiding structure of the present invention;

fig. 5 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;

fig. 6 is a schematic diagram of the three-dimensional structure of the filtering structure of the present invention.

The reference numbers in the figures illustrate: 1. a negative pressure prevention valve body; 2. a seal assembly; 3. a filter structure; 301. a support block; 302. a filter screen; 303. a slot; 304. inserting a block; 305. a groove; 306. a spring fastener; 4. a guide structure; 401. a guide groove; 402. a guide post; 403. a ball bearing; 5. a valve cover; 6. a disassembly and assembly structure; 601. a through groove; 602. a fixing pin; 603. fixing grooves; 604. a limiting groove; 605. and a limiting block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below 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 of 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.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example one

Please refer to fig. 1-5, the utility model provides a vacuum tube solar heat collecting system's negative pressure prevention device, including preventing negative pressure valve main part 1, seal assembly 2 and valve gap 5, the inside of preventing negative pressure valve main part 1 is provided with seal assembly 2, the inside of seal assembly 2 is provided with guide structure 4, the inside bottom of preventing negative pressure valve main part 1 is provided with filtration structure 3, the top of preventing negative pressure valve main part 1 is provided with valve gap 5, the inside both sides of valve gap 5 are provided with dismouting structure 6, filtration structure 3 includes supporting shoe 301, filter screen 302, slot 303, plug-in block 304, recess 305 and spring buckle 306, supporting shoe 301 is fixed in the inside bottom of preventing negative pressure valve main part 1, the bottom of supporting shoe 301 is provided with filter screen 302, the outside on filter screen 302 top is fixed with plug-in block 304, recess 305 has been seted up in the outside of plug-in block 304, slot 303 has been seted up in the outside of supporting shoe 301 bottom, and the inside of slot 303 is inserted and is equipped with plug-in block 304, the inside one side of slot 303 is provided with spring buckle 306, and inside one side of slot 305 is inserted and is equipped with the annular plug-in the design for a set of plug-in block 304.

The working principle of the negative pressure preventing device of the vacuum tube solar heat collecting system based on the first embodiment is as follows: when the system is in positive pressure, water enters the interior of the anti-negative pressure valve main body 1 through the bottom of the anti-negative pressure valve main body, the water rises to the upper surface of the sealing assembly 2 through the side rib part in the interior of the anti-negative pressure valve main body 1, the sealing assembly 2 is pressed downwards, the larger the system pressure is, the tighter the system pressure is, the water leakage during the positive pressure is ensured, when the system is in negative pressure, the upward force of the air under the sealing assembly 2 acting on the sealing assembly 2 overcomes the self weight of the sealing assembly 2, the sealing assembly 2 is pushed upwards to open the sealing surface, the air flows through the side rib part in the interior of the anti-negative pressure valve main body 1 to enter the system through the interface at the bottom of the anti-negative pressure valve main body 1, the vacuum is broken, after the vacuum is eliminated, the sealing assembly 2 falls down under the self weight to be sealed again, the air does not enter the system any more, and the anti-negative pressure operation of the vacuum tube solar heat collecting system can be finished, wherein, if the area inside the negative pressure prevention valve body 1 is reduced, it may cause a reduction in the amount of air that enters the system through the negative pressure prevention valve body 1, thereby affecting the negative pressure prevention effect of the device, when water enters the device through the bottom of the negative pressure prevention valve main body 1, the filter screen 302 can carry out certain degree of filtration treatment on the water flowing through, through filtering impurities in water, the impurities are prevented from entering the anti-negative pressure valve main body 1 to a certain degree and then depositing, thereby reducing the area of the inside, and the filter screen 302 is designed to be detachable and can be periodically detached for replacement or cleaning to ensure the filtering effect, when the filter screen is disassembled, the filter screen 302 is pulled to drive the inserting block 304 to separate from the inner part of the inserting groove 303, the filter screen 302 can be disassembled, when the filter screen is installed, the inserting block 304 is clamped into the inserting groove 303, the spring buckle 306 is used for bouncing into the groove 305, and then the filter screen 302 can be fixedly installed.

Example two

This embodiment still includes: guide structure 4 includes guide way 401, guide post 402 and ball 403, the inside at seal assembly 2 is seted up to guide way 401, the inside of guide way 401 is provided with guide post 402, and the top and the valve gap 5 fixed connection of guide post 402, the inner wall of guide way 401 inlays and is equipped with ball 403, ball 403 is provided with a plurality of groups, a plurality of groups ball 403 is at equidistant distribution of inner wall of guide way 401, dismouting structure 6 is including leading to groove 601, fixed pin 602, fixed slot 603, spacing groove 604 and stopper 605, lead to groove 601 and set up in the inside both sides of valve gap 5, it has fixed pin 602 to run through inside leading to groove 601, the bottom of fixed pin 602 extends to inside fixed slot 603, and fixed slot 603 sets up the outside on negative pressure valve main part 1 top, spacing groove 604 has been seted up in the outside of valve gap 5 bottom, the inside of spacing groove 604 is inserted and is equipped with stopper 605, and stopper 605 bottom and the top fixed connection of negative pressure valve main part 1.

In this embodiment, first, when the sealing assembly 2 moves under the action of water flow pressure or air thrust, the guide groove 401 slides outside the guide post 402 along with the sealing assembly 2, the guide post 402 can guide the movement of the guide groove 401, and the guide groove 401 and the guide post 402 cooperate with each other to guide the movement of the sealing assembly 2, so that the sealing assembly can move up and down more stably, and the balls 403 on the inner wall of the guide groove 401 contact with the outer wall of the guide post 402, so that the balls 403 can reduce the friction force when the guide groove 401 directly contacts with the outer wall of the guide post 402, so that the guide groove 401 can better slide outside the guide post 402, and then, when a worker overhauls or maintains the interior of the valve body 1, the valve cover 5 can be detached by simply unscrewing the fixing pin 602 from the interior of the fixing groove 603, separating the engagement between the limiting groove 604 and the limiting block 605, so that the valve cover 5 can be detached, when the valve cover 5 is installed, the limiting groove is engaged with the valve cover 604, the limiting block 605 can be engaged with the limiting groove 605, the limiting block 604, and the limiting block 605 can be screwed into the position of the fixing pin 5, and the limiting block 602 can be pressed, and the valve body 603 can be attached to the limiting block 603, and the limiting block 602 can be attached to the valve body, and the valve body 603.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

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. Vacuum tube solar collecting system prevents negative pressure device, including preventing negative pressure valve main part (1), seal assembly (2) and valve gap (5), its characterized in that: a sealing component (2) is arranged in the anti-negative pressure valve main body (1);

a guide structure (4) is arranged inside the sealing component (2), and a filtering structure (3) is arranged at the bottom end inside the anti-negative pressure valve main body (1);

the top of the anti-negative pressure valve main body (1) is provided with a valve cover (5), and both sides in the valve cover (5) are provided with dismounting structures (6).

2. The negative pressure preventing device of a vacuum tube solar heat collecting system as claimed in claim 1, wherein: filtration (3) are including supporting shoe (301), filter screen (302), slot (303), inserted block (304), recess (305) and spring buckle (306), supporting shoe (301) are fixed in the inside bottom of anti-negative pressure valve main part (1), the bottom of supporting shoe (301) is provided with filter screen (302), the outside on filter screen (302) top is fixed with inserted block (304), recess (305) are seted up in the outside of inserted block (304), slot (303) have been seted up in the outside of supporting shoe (301) bottom, and the inside of slot (303) is inserted and is equipped with inserted block (304), the inside one side of slot (303) is provided with spring buckle (306), and inserts and establish to recess (305) inside one side of spring buckle (306).

3. The negative pressure preventing device of a vacuum tube solar heat collecting system as claimed in claim 2, wherein: the inner diameter of the slot (303) is larger than the outer diameter of the insertion block (304), and the slot (303) and the insertion block (304) form a clamping structure.

4. The negative pressure preventing device of a vacuum tube solar heat collecting system as claimed in claim 2, wherein: the insert block (304) is provided with a group, and the cross section of the insert block (304) is designed in an annular shape.

5. The negative pressure preventing device of a vacuum tube solar heat collecting system as claimed in claim 1, wherein: guide structure (4) include guide way (401), guide post (402) and ball (403), the inside of seal assembly (2) is seted up in guide way (401), the inside of guide way (401) is provided with guide post (402), and the top and valve gap (5) fixed connection of guide post (402), the inner wall of guide way (401) inlays and is equipped with ball (403).

6. The negative pressure preventing device of a evacuated tube solar collector system according to claim 5, wherein: the ball (403) is provided with a plurality of groups, and the plurality of groups of balls (403) are distributed on the inner wall of the guide groove (401) at equal intervals.

7. The negative pressure preventing device of a vacuum tube solar heat collecting system as claimed in claim 1, wherein: dismouting structure (6) are including leading to groove (601), fixed pin (602), fixed slot (603), spacing groove (604) and stopper (605), lead to groove (601) and set up in the inside both sides of valve gap (5), the inside through-going of leading to groove (601) has fixed pin (602), the bottom of fixed pin (602) extends to inside fixed slot (603), and fixed slot (603) set up in the outside on preventing negative pressure valve main part (1) top, spacing groove (604) have been seted up in the outside of valve gap (5) bottom, the inside of spacing groove (604) is inserted and is equipped with stopper (605), and stopper (605) bottom and the top fixed connection of preventing negative pressure valve main part (1).