CN212318872U - Steam extraction check valve for heat supply pipe - Google Patents

Abstract

The utility model discloses a check valve of drawing steam for heat supply pipe, air inlet and discharge port that set up respectively including valve body and valve body both ends, the inside middle part fixedly connected with buffer board of valve body, the second round hole has been seted up to one side equidistant of buffer board, first round hole has been seted up to the opposite side equidistant of buffer board, the buffering passageway has been seted up between buffer board and the first round hole, the upper end rotation of every buffering passageway is connected with first pivot, the first closing plate of lower extreme fixedly connected with of first pivot, the first dog of lower extreme fixedly connected with of buffering passageway, and first dog is located one side of first closing plate and is connected with the contact of first closing plate. The utility model discloses can prevent the gas reflux, keep sealed effect, effectively reduce the volume of backward flow air current, reduce the pressure of backward flow air current, avoid backward flow air current pressure too big, lead to inside and the pump body of valve body inside impaired, reduce life.

Description

Steam extraction check valve for heat supply pipe

Technical Field

The utility model relates to a check valve technical field especially relates to a steam extraction check valve for heat supply pipe.

Background

The check valve is used for a pipeline system and mainly has the functions of preventing media from flowing backwards, preventing the pump and a driving motor thereof from reversing and discharging the media in the container. Check valves may also be used to provide make-up lines to auxiliary systems in which the pressure may rise above the pressure of the primary system.

The check valve can be applied to pipelines of various media according to different materials. The check valve is arranged on the pipeline, namely, the check valve becomes one of the fluid components of the complete pipeline, and the opening and closing process of the valve clack of the check valve is influenced by the transient flow state of the system in which the check valve is positioned; the closing characteristic of the flap, in turn, contributes to the fluid flow regime. The check valve has the working characteristics of large load change, small opening and closing frequency, long application period when being put into a closed or opened state, and no requirement on movement of a moving part. However, once the "switching" requirement is met, it must be flexible, which is more demanding than the usual mechanical movements.

The existing check valve can not be rapidly sealed when encountering gas backflow in the using process, can cause damage to internal parts and influence the service life of the valve, and therefore the steam extraction check valve for the heat supply pipe needs to be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam extraction check valve for heating pipe, through the connecting block, the second pivot, the second closing plate, support the piece, the connecting plate, the stiffener, the cooperation of connecting rod is used, can form the first way hindrance to the backward flow air current, effectively reduce the volume of backward flow air current, reduce the pressure of backward flow air current, it is too big to avoid backward flow air current pressure, lead to the valve body inside and the pump body is inside impaired, and service life is reduced, through the buffer board, the buffer passage, first pivot, first closing plate, the cooperation of first dog is used, constitute the second way that prevents the air current backward flow and obstruct, through the sealing connection of first closing plate and buffer passage, can prevent gas from flowing back from the buffer passage, through the effort of first dog to first closing plate, can prevent the rotation of first closing plate, keep sealed effect.

An object of the utility model is to provide a steam extraction check valve for heating pipe, air inlet and discharge port that set up respectively including valve body and valve body both ends, the inside middle part fixedly connected with buffer board of valve body, the second round hole has been seted up to one side of buffer board equidistant, first round hole has been seted up to the opposite side equidistant of buffer board, the buffer board with buffer passage has been seted up, every between the first round hole the upper end of buffer passage is rotated and is connected with first pivot, the first closing plate of lower extreme fixedly connected with of first pivot, the first dog of lower extreme fixedly connected with of buffer passage, just first dog is located one side of first closing plate and with first closing plate contact connection.

Furthermore, the buffer plate is close to one side of the discharge port, the upper end and the lower end of the buffer plate are both fixedly connected with connecting blocks, the lower end of each connecting block is connected with a second rotating shaft in a rotating mode, a second sealing plate is fixedly connected to the lower end of the second rotating shaft, a connecting plate is arranged between each connecting block and the corresponding buffer plate, the connecting plate is fixedly connected with the upper end of the inner wall of the valve body, a connecting rod is fixedly connected between each connecting plate and the corresponding buffer plate, and a reinforcing rod is fixedly connected between each connecting plate and the corresponding buffer plate.

Furthermore, the second sealing plate is semicircular, and the upper end and the lower end of the second sealing plate are in contact connection with one side of the second sealing plate.

Further, the reinforcing rod is arranged in an inclined mode.

Furthermore, a supporting block is arranged between the connecting plate and the second sealing plate and fixedly connected with the connecting plate.

Furthermore, the buffer plate is a metal guide plate.

Compared with the prior art, the utility model beneficial effect who has is:

1. the utility model discloses a buffer board, buffer passage, first pivot, first closing plate, the cooperation of first dog are used, constitute the second way that prevents the air current backward flow and hinder, through the sealing connection of first closing plate and buffer passage, can prevent gas from flowing back from buffer passage, through the effort of first dog to first closing plate, can prevent the rotation of first closing plate, keep sealed effect;

2. the utility model discloses a connecting block, second pivot, second closing plate, support the cooperation of piece, connecting plate, stiffener, connecting rod and use, can form the first way hindrance to the backward flow air current, effectively reduce the volume of backward flow air current, reduce the pressure of backward flow air current, avoid backward flow air current pressure too big, lead to inside and the pump body of valve body inside impaired, reduce life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic cross-sectional view of a steam extraction check valve for a heat supply pipe according to the present invention;

fig. 2 is an enlarged schematic structural view of a portion a in fig. 1 of a steam extraction check valve for a heat supply pipe according to the present invention;

fig. 3 is a schematic structural view of a steam extraction check valve for a heat supply pipe at B in fig. 1 according to the present invention;

in the figure: the valve comprises a valve body 1, an air inlet 2, an exhaust port 3, a buffer plate 4, a first round hole 5, a second round hole 6, a buffer channel 7, a first rotating shaft 8, a first sealing plate 9, a first stop block 10, a connecting block 11, a second rotating shaft 12, a second sealing plate 13, a butting block 14, a connecting plate 15, a reinforcing rod 16 and a connecting rod 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an exhaust check valve for a heat supply pipe, including an air inlet 2 and an exhaust port 3 respectively arranged at two ends of a valve body 1 and the valve body 1, a buffer plate 4 fixedly connected to the middle of the inside of the valve body 1, a second round hole 6 is equidistantly arranged at one side of the buffer plate 4, a first round hole 5 is equidistantly arranged at the other side of the buffer plate 4, a buffer passage 7 is arranged between the buffer plate 4 and the first round hole 5, the upper end of each buffer passage 7 is rotatably connected with a first rotating shaft 8, a first seal plate 9 is fixedly connected to the lower end of the first rotating shaft 8, a first stopper 10 is fixedly connected to the lower end of the buffer passage 7, and the first stopper 10 is located at one side of the first seal plate 9 and is in contact connection with the.

Equal end fixedly connected with connecting block 11 about buffer board 4 is close to one side of discharge port 3, the lower extreme of connecting block 11 rotates and is connected with second pivot 12, the lower extreme fixedly connected with second closing plate 13 of second pivot 12, be provided with connecting plate 15 between connecting block 11 and the buffer board 4, connecting plate 15 and the inner wall upper end fixed connection of valve body 1, fixedly connected with connecting rod 17 between connecting plate 15 and the buffer board 4, and fixedly connected with stiffener 16 between connecting plate 15 and buffer board 4, second closing plate 13 is semi-circular, and one side contact of upper and lower both ends second closing plate 13 is connected, stiffener 16 sets up for the slope, be provided with between connecting plate 15 and the second closing plate 13 and support piece 14, and support piece 14 and connecting plate 15 fixed connection, buffer board 4 is the metal guide plate.

Working principle and using process:

when the gas backflow prevention valve is used, gas enters through the gas inlet 2, moves towards the direction of the exhaust port 3, and respectively passes through the first round hole 5, the buffer channel 7 and the second round hole 6, under the action of gas flow, the first sealing plate 9 inclines, the gas smoothly enters the other side of the valve body 1 from the buffer channel 7, according to the same principle, the second sealing plate 13 inclines, the gas smoothly passes through the exhaust port 3 to be exhausted, at the moment when gas pumping stops, the first sealing plate 9 and the second sealing plate 13 reset under the action of gravity, when the gas flows back, the gas flows back through the inside of the valve body 1 through the exhaust port 3, at the moment, the connecting block 11, the second rotating shaft 12, the second sealing plate 13, the abutting block 14, the connecting plate 15, the reinforcing rod 16 and the connecting rod 17 are matched for use, a first barrier to the backflow gas flow can be formed, the second sealing plates 13 at the upper end and the lower end are in contact, and the continuous rotation, and then block the gaseous perfect heart of flowing back, effectively reduce the volume of backward flow air current, reduce the pressure of backward flow air current, connecting rod 17 and stiffener 16 can provide the support to connecting plate 15, avoid backward flow air current pressure too big, lead to the valve body inside and pump body inside impaired, reduce life, through buffer plate 4, buffer passage 7, first pivot 8, first closing plate 9, the cooperation of first dog 10 is used, constitute the second way that prevents the air current backward flow and hinder, through the sealing connection of first closing plate 9 and buffer passage 7, can prevent gaseous backward flow from buffer passage 7, through the effort of first dog 10 to first closing plate 9, can prevent the rotation of first closing plate 9, keep sealed effect.

The details of the present invention are well known to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an air inlet (2) and discharge port (3) that steam extraction check valve for heating pipe, includes that valve body (1) and valve body (1) both ends set up respectively which characterized in that: the valve body is characterized in that a buffer plate (4) is fixedly connected to the middle of the inside of the valve body (1), a second round hole (6) is equidistantly formed in one side of the buffer plate (4), a first round hole (5) is equidistantly formed in the other side of the buffer plate (4), a buffer channel (7) is formed between the buffer plate (4) and the first round hole (5), every buffer channel (7) is rotatably connected to the upper end of the buffer channel (7) through a first rotating shaft (8), a first sealing plate (9) is fixedly connected to the lower end of the first rotating shaft (8), a first stop dog (10) is fixedly connected to the lower end of the buffer channel (7), and the first stop dog (10) is located on one side of the first sealing plate (9) and is in contact connection with the first sealing plate (9).

2. An extraction check valve for a heating pipe as claimed in claim 1, wherein: buffer board (4) are close to both ends equal end fixedly connected with connecting block (11) about one side of discharge port (3), the lower extreme of connecting block (11) is rotated and is connected with second pivot (12), the lower extreme fixedly connected with second closing plate (13) of second pivot (12), connecting block (11) with be provided with connecting plate (15) between buffer board (4), connecting plate (15) with the inner wall upper end fixed connection of valve body (1), connecting plate (15) with fixedly connected with connecting rod (17) between buffer board (4), just connecting plate (15) with fixedly connected with stiffener (16) between buffer board (4).

3. An extraction check valve for a heating pipe as claimed in claim 2, wherein: the second sealing plate (13) is semicircular, and the upper end and the lower end of the second sealing plate (13) are in contact connection with one side.

4. An extraction check valve for a heating pipe as claimed in claim 2, wherein: the reinforcing rod (16) is arranged obliquely.

5. An extraction check valve for a heating pipe as claimed in claim 2, wherein: a supporting block (14) is arranged between the connecting plate (15) and the second sealing plate (13), and the supporting block (14) is fixedly connected with the connecting plate (15).

6. An extraction check valve for a heating pipe as claimed in claim 1, wherein: the buffer plate (4) is a metal guide plate.

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