CN200992721Y

CN200992721Y - Non-negative pressure controller

Info

Publication number: CN200992721Y
Application number: CN 200620175973
Authority: CN
Inventors: 张明亮; 王学成; 夏伟光
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-27
Filing date: 2006-12-27
Publication date: 2007-12-19
Anticipated expiration: 2016-12-27

Abstract

The utility model provides a non-negative pressure controller which consists of a housing, a flange, a float, a guiding cover, a piston and a piston plate. The float is placed in the guiding cover in the housing; the guiding cover is fixed on the piston plate; the piston plate is fixed on the housing; the piston is equipped on the float, positioned by a guiding rod in a center hole on the piston plate and can move up and down freely; an O-ring and piston plate sealing are provided at the bottom of the guiding rod. The utility model is of simple structure, low manufacturing cost and reliable application, and can be installed on utility water supply pipe to directly connect to top of a closed water storage container in front of the water suction pipe of pump of pressuring equipment to solve the negative pressure problem of the pressurizing equipment caused by pump suction when inlet water quantity of the pressurizing equipment is smaller than water supply quantity with no influence on other users.

Description

Non negative pressure controller

1, technical field

The utility model relates to no negative pressure control technology field, particularly relates to the non negative pressure controller of the no negative pressure pressurized equipment use that directly is concatenated into the municipal water supply pipeline.

2, background technology

Along with the development of city-building, the municipal water supply pipeline pressure in many areas can not satisfy housing estate or highrise building upper-layer user's water requirement.For addressing the above problem, people are connected in series pressurized equipment usually in the municipal water supply pipeline, but inhale the negative pressure problem that journey causes because of there being water pump, the pressurized equipment of serial connection can have influence on other user's water, for this reason, vacuum suppresser, automatic air compensating valve etc. on existing pressurized equipment, also occur and eliminated negative pressure, but vacuum suppresser complex structure, cost of manufacture height, and the dependability of automatic air compensating valve is poor.

3, summary of the invention

In view of above-mentioned the deficiencies in the prior art, the utility model provides a kind of simple in structure, service-strong non negative pressure controller.

The technical scheme that its technical problem that solves the utility model adopts is: non negative pressure controller is by housing, flange, float, guide housing, piston and piston plate are formed, housing comprises cylindrical shell and end socket, flange is equipped with in the cylindrical shell lower end, the uniform through hole that leads to housing that offers in flange middle part, the flange periphery is provided with fixing hole, the cylindrical shell upper end is connected with end socket, piston plate is fixed on the cylindrical shell, and housing is divided into, following two parts, its middle shell top is air chamber, the bottom is a hydroecium, float is located in the hydroecium, and place in the guide housing, guide housing adopts the stainless steel metal web plate that is covered with aperture to make, preferred 30 orders of aperture specification, guide housing comprises guide cylinder and base plate, it is cylindric that guide cylinder is, its lower end and base plate preparation, the upper end directly is fixed on piston plate, offer centre bore in the middle of the piston plate, the preparation of the guide peg of its centre bore and piston, and the centre bore bottom is processed into concave station, and cooperate with the boss of piston, piston is positioned at by guide peg in the centre bore of piston plate and can goes up, under move freely, and be provided with O shape circle and piston plate sealing in guide peg bottom.

Piston is to adopt stainless steel or brass to make, and comprises guide peg and pressing plate, and the top of guide peg is hollow, and the bottom connects pressing plate, and the pressing plate bottom contacts with float, top processes boss in the guide peg junction, and is provided with scrobicular ring on boss top, and O shape circle is located in the scrobicular ring; The lower end of guide peg hollow part is near scrobicular ring top radially uniform 4 pores, and the interior hollow part of pore and guide peg is communicated with.

The end socket top of housing offers blow vent, is provided with the air micropore filtering film in the blow vent, and fixes with gland, adopts between gland and the blow vent to be threaded, and offers the air vent that is communicated with outside air on the top of gland.The air micropore filtering film is to adopt the nontoxic fluorine material of hydrophobicity to be furnished with pre-filtering layer as filter medium to form through folding, has air filtration, sterilization and dustproof effect.

During use the utility model is installed in and airtight tank top before the municipal water supply pipeline directly is connected in series the water pump suction pipe of pressurized equipment, the inflow that solves pressurized equipment is inhaled the negative pressure problem that journey produces because of water pump during less than output, thereby does not influence other user's water.The utility model is simple in structure, and cost of manufacture is low, uses reliable.

4, description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the structure of the related guide housing of Fig. 1 is partly cutd open figure;

Fig. 3 is the related structure of piston schematic diagram of Fig. 1.

Among the figure, 1, flange, 2, housing, 3, guide housing, 4, float, 5, piston, 6, O shape circle, 7, piston plate, 8, blow vent, 9, the air micropore filtering film, 10, gland, 11, through hole, 12, fixing hole, 21, cylindrical shell, 22, end socket, 23, hydroecium, 24, air chamber, 31, guide cylinder, 32, base plate, 33, aperture, 51, pressing plate, 52, scrobicular ring, 53, pore, 54, guide peg, 55, boss, 71, centre bore, 101, air vent, 711, concave station.

5, the specific embodiment

Explain below doing below in conjunction with Fig. 1～3 non negative pressure controller pair of the present utility model.

Shown in Fig. 1～3, non negative pressure controller of the present utility model is by housing (2), flange (1), float (4), guide housing (3), piston (5) and piston plate (7) are formed, housing (2) comprises cylindrical shell (21) and end socket (22), flange (1) is equipped with in cylindrical shell (21) lower end, the uniform through hole (11) that leads to housing (2) that offers in flange (1) middle part, flange (1) periphery is provided with fixing hole (12), cylindrical shell (21) upper end is connected with end socket (22), piston plate (7) is fixed on the cylindrical shell (21), and housing (2) is divided into, following two parts, its middle shell (2) top is air chamber (24), the bottom is hydroecium (23), float (4) is located in the hydroecium (23), and place in the guide housing (3), guide housing (3) adopts the stainless steel metal web plate that is covered with aperture (33) to make, preferred 30 orders of aperture (33) specification, guide housing (3) comprises guide cylinder (31) and base plate (32), guide cylinder (31) shape is cylindric, its lower end and base plate (32) preparation, the upper end directly is fixed on piston plate (7), offer centre bore (71) in the middle of the piston plate (7), its centre bore (71) is prepared with the guide peg (54) of piston (5), and concave station (711) is processed in centre bore (71) bottom, and cooperate with the boss (55) of piston (5), piston (5) is positioned at interior can the going up of centre bore (71) of piston plate (7) by guide peg (51), under move freely, and be provided with O shape circle (6) and piston plate (7) sealing in guide peg (54) bottom.

Piston (5) is to adopt stainless steel or brass to make, comprise guide peg (54) and pressing plate (51), the top of guide peg (54) is that hollow, bottom connects pressing plate (51), pressing plate (51) bottom contacts with float (4), top processes boss (55) in guide peg (54) junction, and being provided with scrobicular ring (52) on boss (55) top, O shape circle (6) is located in the scrobicular ring (52); The lower end of guide peg (54) hollow part is near scrobicular ring (52) radially uniform 4 pores in top (53), and the interior hollow part of pore (53) and guide peg (54) is communicated with.

End socket (22) top of housing (2) offers blow vent (8), be provided with air micropore filtering film (9) in the blow vent (8), and it is fixing with gland (10), adopt between gland (10) and the blow vent (8) to be threaded, and offer the air vent (101) that is communicated with outside air on the top of gland (10).Air micropore filtering film (9) is to adopt the nontoxic fluorine material of hydrophobicity to be furnished with pre-filtering layer as filter medium to form through folding, has air filtration, sterilization and dustproof effect.

During use flange (1) is installed in and airtight tank top before the municipal water supply pipeline directly is connected in series the water pump suction pipe of pressurized equipment by fixing hole (12), when the ducted water of municipal water supply is full of tank, water by flange (1) middle part through hole (11) drives float (4) promotion piston (5) come-up, the pore (53) of closing earlier in this process on the guide peg (54) is communicated with hydroecium (23), air gap between mountain O shape circle (6) sealing guide peg (54) and the centre bore (71) separates hydroecium (23) and air chamber (24) fully again, hydroecium (23) is closed.If keep balance between the inflow of tank and the water yield, this state is kept.When the inflow of tank during less than water yield, above-mentioned equilibrium state is destroyed, drawdown in the tank, piston (5) moves down with float (4) under the effect of gravity, O shape circle (6) sealing is opened, and hydroecium (23) is communicated with air chamber (24) by pore (53), and air chamber (24) communicates with ambient atmosphere by blow vent (101), destroy the formation of negative pressure, thereby do not influenced other user's water.

Claims

1, a kind of non negative pressure controller is by housing, flange, float, guide housing, piston and piston plate are formed, it is characterized in that: housing comprises cylindrical shell and end socket, flange is equipped with in the cylindrical shell lower end, the uniform through hole of offering in flange middle part, the flange periphery is provided with fixing hole, the cylindrical shell upper end is connected with end socket, piston plate is fixed on the cylindrical shell, and housing is divided into, following two parts, its middle shell top is air chamber, the bottom is a hydroecium, float is located in the hydroecium, and place in the guide housing, the guide housing upper end directly is fixed on piston plate, offers centre bore in the middle of the piston plate, and concave station is processed in the centre bore bottom, and cooperate with the boss of piston, piston is positioned in the centre bore of piston plate by guide peg, and is provided with O shape circle in the guide peg bottom.

2, non negative pressure controller according to claim 1 is characterized in that: guide housing adopts the stainless steel metal web plate that is covered with aperture to make, preferred 30 orders of aperture specification, and guide housing comprises guide cylinder and base plate, it is cylindric that guide cylinder is, its lower end and base plate preparation.

3, non negative pressure controller according to claim 1, it is characterized in that: piston is to adopt stainless steel or brass to make, comprise guide peg and pressing plate, the top of guide peg is that hollow, bottom connects pressing plate, the pressing plate bottom contacts with float, top processes boss in the guide peg junction, and is provided with scrobicular ring on boss top, and O shape circle is located in the scrobicular ring, the lower end of guide peg hollow part is near scrobicular ring top radially uniform 4 pores, and the interior hollow part of pore and guide peg is communicated with.

4, non negative pressure controller according to claim 1, it is characterized in that: the end socket top of housing offers blow vent, be provided with the air micropore filtering film in the blow vent, and fix with gland, adopt between gland and the blow vent to be threaded, and offer the air vent that is communicated with outside air on the top of gland.