CN201269190Y

CN201269190Y - Piston-type pump

Info

Publication number: CN201269190Y
Application number: CNU2008201773238U
Authority: CN
Inventors: 陈健
Original assignee: TAIZHOU SUNNY AGRICULTURAL MACHINERY CO Ltd
Current assignee: TAIZHOU SUNNY AGRICULTURAL MACHINERY CO Ltd
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-07-08
Anticipated expiration: 2018-11-07

Abstract

The utility model relates to a piston pump, in particular to a piston pump used in a manual sprayer, which solves the problems of difficult cleaning and short service life of the existing piston pump, which are caused by adopting a monolayer fixing type filter screen structure. The piston pump comprises a decompression valve component, an air chamber body, an air chamber lower body, a pump and a piston component; wherein, the decompression valve component is positioned on the air chamber body and extends into the air chamber body, the air chamber lower body is fixedly connected with the air chamber body and connected with the upper part of the pump which is internally connected with the piston component. The piston pump is characterized in that: the top of the pump is provided with two layers of one-way conducting valve sheets; the air chamber lower body is provided with a water inlet positioned between the one-way conducting valve sheets, and the water inlet is provided with a double-layer filter screen. The piston pump adopts the double-layer dismountable filter screen and the design of a plurality of decompression valve values, and therefore, the piston pump is characterized by long service life, good safety and easy cleaning.

Description

A kind of reciprocating pump

Technical field

The utility model relates to a kind of reciprocating pump, particularly a kind of reciprocating pump that is applied in the hand sprayer.

Background technique

Sprayer is the common equipment in the fields such as agricultural production, gardens protection, health and epidemic prevention, through be usually used in spraying insecticide, weed killer, anti-ly cure the disease, the harm of worm, grass, and the violation of muroid.And the parts of core are exactly water pump in the sprayer, and water pump extrudes medicine-chest by pipeline and shower nozzle ejection with the liquid in the sprayer medicine-chest.The reciprocating pump of hand sprayer commonly used mainly is made up of pump upper body, pump lower body, piston assembly, water intake and water outlet at present.

Yet the water intake of the reciprocating pump of existing hand sprayer all is the structure that adopts the single layer filter net, and this single layer filter net be non-dismountable formula be connected, therefore this single layer filter net easy cleaning not, growth along with service time, soup stick precipitation, can have influence on the unimpeded performance of water intake, thereby reduce the working life of sprayer.

Summary of the invention

The purpose of this utility model is at existing piston pump above shortcomings, provides a kind of and has that long service life, Security are good, the reciprocating pump of easy cleaning.

The purpose of this utility model can realize by following technical proposal: a kind of reciprocating pump, comprise Decompression valves assembly, air chamber body, air chamber lower body, pump and piston assembly, the Decompression valves assembly is positioned on the air chamber body and stretches into the air chamber body, air chamber lower body and air chamber body are connected, and be connected with pump top, be connected with piston assembly in the pump, it is characterized in that, described pump top is provided with two layers of unidirectional conducting valve block; Have the water intake between unidirectional conducting valve block on the described air chamber lower body, described water intake is provided with double-layer filtering net.

Described double-layer filtering net comprises inner layer net and outer layer net, is detachable the connection between outer layer net and the air chamber lower body.

Described pump is cylindric, inner ring diameter φ ₁Be 50 ± 2mm, race diameter φ ₂Be 56 ± 2mm.

Described pump lower end is socketed with decorative cover and is connected with it, the stroke of described decorative cover limited piston assembly.

Described Decompression valves assembly comprises the pressure release bar, is positioned at the Sealing four of pressure release masthead portion, pressure release spring and adjusting knob, pressure release bar one end is positioned at the air chamber body, the other end is socketed with adjusting knob, pressure release spring one end is socketed on the Sealing, the other end is against on the adjusting knob, the decrement of adjusting knob Regulation spring.

Have relief hole on the described pressure release bar, relief hole communicates with the air chamber body, and the relief hole outside is sealed by the sealing gasket pressure type.

Described piston assembly comprises piston, leather cup and is connected in continuous motion stem on the piston, is hinged with rocking arm on the described continuous motion stem, wherein the built-in ring-spring of leather cup.

Compared with prior art, the beneficial effect of this reciprocating pump is as follows:

This reciprocating pump adopts the structure of double-layer filtering net on described water intake, make this reciprocating pump have anti-obstruction, durable characteristics; And the outer layer net of double-layer filtering net adopts detachable structure, thereby makes the outer layer net easy cleaning of this reciprocating pump, improves the repeated use degree of filter screen, and then prolongs the working life of this reciprocating pump; The Sealing of the Decompression valves assembly at described air chamber body top carries out the pressure type sealing by spring, makes this reciprocating pump have high reliability and Security because of pressure release is sensitive and accurate.

Description of drawings

Fig. 1 is a sectional structure schematic representation of the present utility model.

Fig. 2 is a perspective view of the present utility model.

Among the figure, 1, the Decompression valves assembly; 1a, pressure release bar; 1b, pressure release spring; 1c, adjusting knob; 1d, relief hole; 1e, Sealing four; 1e1, boss; 1f, Sealing five; 1g, Sealing six; 2, air chamber body; 2a, water intake; 2b, water outlet; 3, air chamber lower body; 4, pump; 5, piston assembly; 5a, piston; 5b, continuous motion stem; 5c, ring-spring; 5d, leather cup; 6, lower valve; 7, go up valve block; 8, inner layer net; 9, outer layer net; 10, Sealing one; 11, Sealing two; 12, Sealing three; 13, decorative cover; 14, rocking arm.

Embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

In the present embodiment, as depicted in figs. 1 and 2, a kind of reciprocating pump, comprise Decompression valves assembly 1, air chamber body 2, air chamber lower body 3, pump 4 and piston assembly 5, Decompression valves assembly 1 is positioned on the air chamber body 2 and stretches into air chamber body 2, and air chamber lower body 3 is connected with air chamber body 2, and be connected with pump 4 tops, be connected with piston assembly 5 in the pump 4, described pump 4 tops are provided with two layers of unidirectional conducting valve block, comprise valve block 7 and lower valve 6; Have the water intake 2a between unidirectional conducting valve block on the described air chamber lower body 3, described water intake 2a is provided with double-layer filtering net.During work, the user is by rocking arm 14 pulling piston assemblys 5, when piston assembly 5 moves downward, vacuum space between piston assembly 5 and the pump 4 becomes big gradually, form draught head with the outside atmosphere, thus liquid lower valve 6 is opened, liquid is pressed into pump 4 from water intake 2a; When piston assembly 5 moves upward, pump 4 internal pressures are greater than the air pressure of air chamber body 2 inside, last valve block 7 is opened, liquid just from then on passage enter air chamber body 2, along with the increase of air chamber body 2 internal liquids, air chamber body 2 internal voids diminish, air pressure increases thereupon, when pressure was increased to working pressure 0.2-0.4Mpa, the liquid in the air chamber body 2 sprayed from shower nozzle through the water outlet 2b that is located on the air chamber lower body 3, formed the needed atomizing effect of user.When pressure surpassed the pressure release threshold values that the user sets, Decompression valves can be opened automatically, plays the effect of pressure release, thereby has improved security of products.

Described double-layer filtering net comprises inner layer net 8 and outer layer net 9, is detachable the connection between outer layer net 9 and the air chamber lower body 3.Unpicking and washing of outer layer net 9 is convenient in detachable connection.Described air chamber lower body 3 is equipped with Sealing 1 with the medicine-chest joint.

Described pump 4 is cylindric, and inner ring diameter is φ 50 ± 2mm, and race diameter is φ 56 ± 2mm, with the connecting end of air chamber lower body 3 Sealing 2 11 and Sealing 3 12 is housed.

Described pump 4 lower ends are socketed with decorative cover 13 and are connected with it, the stroke of described decorative cover 13 limited piston assemblies 5.Decorative cover 13 can prevent that piston assembly 5 from skidding off pump 4.

As shown in Figure 1, described Decompression valves assembly 1 comprises pressure release bar 1a, is positioned at Sealing four 1e, pressure release spring 1b and the adjusting knob 1c at pressure release bar 1a top, pressure release bar 1a one end is positioned at air chamber body 2, the other end is socketed with adjusting knob 1c, pressure release spring 1b one end is socketed on Sealing four 1e, and the other end is against on the adjusting knob 1c.Described Sealing four 1e are provided with boss 1e1, and pressure release spring 1b is enclosed within on the boss 1e1, and Sealing four 1e play guiding, location, sealing like this.Have relief hole 1d on the described pressure release bar 1a, relief hole 1d communicates with air chamber body 2, and the relief hole 1d outside is by the sealing of Sealing four 1e pressure types, and pressure release bar 1a and air chamber body 2 connection parts are equipped with Sealing five 1f and Sealing six 1g.Adjusting knob 1c is divided into some shelves, described adjusting knob 1c is different with the relative position between the pressure release bar 1a down for different shelves, principle is to impose on the decrement that the different pressure of pressure release spring 1b changes spring by adjusting knob 1c, thereby changes the threshold values of Decompression valves.

Described piston assembly 5 comprises piston 5a and the continuous motion stem 5b that is connected on the piston 5a, is hinged with rocking arm 14 on the described continuous motion stem 5b, and rocking arm 14 can drive continuous motion stem 5b and slide up and down along pump 4 inwalls, and described piston 5a is socketed with the leather cup 5d of built-in ring-spring 5c.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used Decompression valves assembly 1 morely, pressure release bar 1a, pressure release spring 1b, adjusting knob 1c, relief hole 1d, Sealing four 1e, boss 1e1, Sealing five 1f, Sealing six 1g, air chamber body 2, water intake 2a, water outlet 2b, air chamber lower body 3, pump 4, piston assembly 5, piston 5a, continuous motion stem 5b, ring-spring 5c, leather cup 5d, lower valve 6, last valve block 7, inner layer net 8, outer layer net 9, Sealing 1, Sealing 2 11, Sealing 3 12, decorative cover 13; rocking arm 14; water outlet 15 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1, a kind of reciprocating pump, comprise Decompression valves assembly, air chamber body, air chamber lower body, pump and piston assembly, the Decompression valves assembly is positioned on the air chamber body and stretches into the air chamber body, air chamber lower body and air chamber body are connected, and be connected with pump top, be connected with piston assembly in the pump, it is characterized in that, described pump top is provided with two layers of unidirectional conducting valve block; Have the water intake between unidirectional conducting valve block on the described air chamber lower body, described water intake is provided with double-layer filtering net.

2, a kind of reciprocating pump according to claim 1 is characterized in that, described double-layer filtering net comprises inner layer net and outer layer net, is detachable the connection between outer layer net and the air chamber lower body.

3, a kind of reciprocating pump according to claim 1 is characterized in that, described pump is cylindric, inner ring diameter φ ₁Be 50 ± 2mm, race diameter φ ₂Be 56 ± 2mm.

4, according to claim 1 or 3 described a kind of reciprocating pumps, it is characterized in that described pump lower end is socketed with decorative cover and is connected with it, the stroke of described decorative cover limited piston assembly.

5, a kind of reciprocating pump according to claim 4, it is characterized in that, described Decompression valves assembly comprises the pressure release bar, is positioned at the Sealing four of pressure release masthead portion, pressure release spring and adjusting knob, pressure release bar one end is positioned at the air chamber body, the other end is socketed with adjusting knob, pressure release spring one end is socketed on the Sealing, and the other end is against on the adjusting knob, the decrement of adjusting knob Regulation spring.

6, a kind of reciprocating pump according to claim 5 is characterized in that, has relief hole on the described pressure release bar, and relief hole communicates with the air chamber body, and the relief hole outside is sealed by the sealing gasket pressure type.

According to claim 1 or 6 described a kind of reciprocating pumps, it is characterized in that 7, described piston assembly comprises piston, leather cup and is connected in continuous motion stem on the piston, is hinged with rocking arm on the described continuous motion stem, the built-in ring-spring of described leather cup.