CN2776569Y

CN2776569Y - Hand held spray gun

Info

Publication number: CN2776569Y
Application number: CN 200520068750
Authority: CN
Inventors: 黄亦仁
Original assignee: PHYSICAL AGROFORESTRY MACHINERY SCIENCE AND TECHNOLOGY(SUZHOU) CO Ltd
Current assignee: PHYSICAL AGROFORESTRY MACHINERY SCIENCE AND TECHNOLOGY(SUZHOU) CO Ltd
Priority date: 2005-01-27
Filing date: 2005-01-27
Publication date: 2006-05-03
Anticipated expiration: 2015-01-27

Abstract

The utility model discloses a hand held spray gun, which comprises a spray gun body, the internal part of which is provided with a water inlet path and a water outlet path which are communicated by a valve; a spout is arranged on the outlet end of the water outlet path, and the inlet end of the water inlet path is a water inlet which is connected with a water inlet pipe and is provided with a handle which is rotationally connected with the body. The utility model is characterized in that the valve which is communicated with the water inlet path and the water outlet path is a ball valve; the utility model is composed of a valve seat which is fixed in the body and is composed of a valve ball which is arranged in the valve seat and is matched with the internal chamber of the valve seat; the valve ball is fixedly connected with a driving rotary shaft; the handle is matched with the driving rotary shaft through a valve control mechanism, and the internal part of the valve control mechanism comprises a gear rack structure of a gear. The utility model can increase tightness of the spray gun and increase the service life and simplify the manufacturing process. Accordingly, the rate of finished products can be increased and the cost can be reduced.

Description

Hand-held spray guns

Technical field

The utility model relates to a kind of injection apparatus with discharge liquid, is specifically related to the hand-held spray guns of using on the high-pressure cleaning device that a kind of agriculture and forestry use.

Background technology

In the prior art, shown in accompanying drawing 1 to 2, hand-held spray guns comprises a spray gun body, be provided with in the body 1 into aquaporin 2 and exhalant canal 3, go into 3 of aquaporin 2 and exhalant canals and pass through the connection of valve rod formula water control valve door, the port of export of exhalant canal 3 is provided with spout 4, go into the water inlet 5 of entrance point for being connected of aquaporin 2 with oral siphon, described valve rod formula water control valve door is made up of the valve rod 20 of valve seat 8 and cooperation with it, wherein valve seat 8 is fixed in the body 1, valve rod 20 is sheathed in the valve opening 21 of valve seat 8, the bottom of valve rod 20 is provided with back-moving spring, valve rod 20 is positioned at valve opening 21 places and is provided with the taper valve core 22 that cooperates with valve opening 21 apertures, also be provided with the handle 6 that an end and body 1 are rotationally connected on the body 1, the top of valve rod 20, match with it handle 6 contact-making surfaces and back-moving spring constitutes the drives structure of valve rod 21, and the other end of handle 6 cooperates the formation buckle structure with bayonet socket 19 on the body 1.

Its operation principle is: the handle of holding with a firm grip, handle squeezing valve masthead portion makes the inside indentation of valve rod, this moment, spool broke away from valve opening, valve is in open mode, current are entered into aquaporin by water inlet, gap between valve opening and valve rod is pressed into exhalant canal and is sprayed by spout, and handle can be stuck in the handle lock buckle structure to stay open state; And it is opposite, when end injection, hold with a firm grip once more and release handle, make its release lock buckle structure, valve rod outwards ejects and restPoses under the effect of back-moving spring, spool too return in valve opening, and be pressed into the top of continuing to press to spool into the current of aquaporin this moment, forms airtight by hydraulic pressure.

The shortcoming of the pistol of this type of valve rod formula is: 1. when opening, High-Pressure Water by the space between valve rod and the valve seat, easily causes wearing and tearing to valve opening fast, use a period of time after, spool can't form airtightly with valve opening, produces drainage; 2. when closing, the impurity in the water easily is stuck between valve opening and the spool, makes the spool can't be airtight with valve opening, causes and leaks; 3. the axiality between this type of structural requirement valve rod and the valve seat is not less than 0.1, so manufacture craft is comparatively complicated, and finished product is required height, improves cost of manufacture; 4. current are when entering valve opening, and its flow channel has only the space between valve rod and the valve seat, thereby limited flow, and pressure descends, length and dynamics that influence is sprayed.

Summary of the invention

The utility model purpose provides a kind of not easy to wear, long service life, and airtight performance is good, hydraulic pressure height, and the simple hand-held spray guns of manufacture craft.

For achieving the above object, the technical solution adopted in the utility model is: a kind of hand-held spray guns, it comprises a spray gun body, be provided with in the described body into aquaporin and exhalant canal, go between aquaporin and exhalant canal and be communicated with by valve, the port of export of exhalant canal is provided with spout, go into the water inlet of entrance point for being connected of aquaporin with oral siphon, be provided with a handle that is rotationally connected with body, the valve that aquaporin and exhalant canal are gone in described connection is a ball valve, by in being fixed in intrinsic valve seat and placing valve seat and the valve ball that cooperates with valve base cavity constitute, be fixedly connected with the driving rotating shaft on the valve ball, described handle cooperates with the driving rotating shaft by the control valve system, includes gear ﹠ rack structure in the described control valve system.

In the technique scheme, described control valve system is to be fixed with gear in the driving rotating shaft of ball valve, cooperate with gear to be provided with tooth bar, an end of described handle is a holding end, and the other end is a drive end, one end of described tooth bar cooperates with the drive end of handle, and the other end is provided with back-moving spring.

Further technical scheme is, described handle is a lever construction, and described tooth bar is the shaped as frame structure, and teeth are arranged on the madial wall of tooth bar frame and the gears engaged that is positioned at the shaped as frame inner chamber, one end of tooth bar frame cooperates with the drive end of handle, is provided with back-moving spring between the other end and body.

According to above-mentioned technology, further scheme is, the drive end that described handle cooperates with the tooth bar frame is provided with the roller bearing that is rotationally connected with handle, roller bearing and tooth bar frame one end in contact.

In the technique scheme, described valve seat is provided with inlet opening and apopore, respectively with go into aquaporin and exhalant canal is communicated with, its aperture cooperates with entry, exhalant canal aperture; Described valve ball is provided with a through hole, and the aperture of described through hole is less than the aperture of inlet opening, apopore.

In the technique scheme, an end of described handle be located at being clasped on the body, constitute buckle structure.

The utility model operation principle is: when opening spray gun, the handle of holding with a firm grip, handle rotates, it is stuck in the buckle structure, the tooth bar that the drive end promotion of handle cooperates with the handle drives end forward, compression and the fixing back-moving spring of tooth bar, and rotate under the drive of tooth bar with the tooth bar meshed gears, and then the driving rotating shaft that drive is fixedlyed connected with gear is rotated in the same way, promptly driving the valve ball that is fixed in its bottom rotates simultaneously, through hole on the valve ball is communicated with entry, apopore on the valve seat, and current enter exhalant canal by going into aquaporin through ball valve, are sprayed by spout; When closing, the handle release catch of holding with a firm grip structure, back-moving spring ejects, promotes tooth bar and moves backward, is driven in the opposite direction with its meshed gears and rotates, and drives rotating shaft and drives the corresponding rotation of ball valve, valve-off.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1. because the valve in the utility model adopts ball valve, valve close be with the ball valve wall cut off entry, apopore, therefore both made current to valve seat or ball valve wear and tear to some extent, because of the zone that can wear and tear bigger, can the seal of valve not exerted an influence, improved sealing property, avoid drainage, increase the service life.

2. cooperate with valve base cavity owing to valve ball, therefore when the impurity in the current invests on the valve ball through hole, valve ball is when closing rotation, the impurity that will adhere to divests, and when crossing unlatching again, current can will be retained in apopore or the impurity at blasthole place washes out, and avoid impurity to be stuck between valve seat and the valve ball, have improved sealing, the leak-stopping of valve equally.

3. because ball valve is lower to the concentricity requirement between valve seat and the valve ball, and ball valve has been the manufacture craft of a maturation, and therefore, the yield rate height is easy to realize, reduces production costs.

4. because current directly enter exhalant canal by the through hole on the valve ball, increase the outlet area, the flow velocity of current is reduced, reduces the abrasivity to ball valve, improved the leak-stopping of valve.

5. the setting of handle lock buckle structure can make spray gun stay open state, need not the lasting gripping of hand, operates more simple, humanized.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model background technology;

Accompanying drawing 2 is the opening schematic diagram of Fig. 1;

Accompanying drawing 3 is the structural representation among the utility model embodiment one;

Accompanying drawing 4 is the opening schematic diagram of Fig. 3;

Accompanying drawing 5 is the amplification front elevation of Fig. 4;

Accompanying drawing 6 is the enlarged diagram of ball valve among Fig. 3.

Wherein: [1], body; [2], go into aquaporin; [3], exhalant canal; [4], spout; [5], water inlet; [6], handle; [7], ball valve; [8], valve seat; [9], valve ball; [10], drive rotating shaft; [11], gear; [12], drive end; [13], back-moving spring; [14], tooth bar frame; [15], roller bearing; [16], inlet opening; [17], apopore; 118], through hole; [19], buckle; [20], valve rod; [21], valve opening; [22], spool; [23], nut.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: shown in accompanying drawing 3 to 6, a kind of hand-held spray guns, it comprises a spray gun body 1, be provided with into aquaporin 2 and exhalant canal 3 in the described body 1, go into 3 of aquaporin 2 and exhalant canals and pass through ball valve 7 connections, the port of export of exhalant canal 3 is provided with spout 4, go into the water inlet 5 of entrance point for being connected of aquaporin 3 with oral siphon, be provided with a handle 6 that is rotationally connected with body 1, an end of handle 6 cooperates the formation buckle structure with buckle 19 on being located at body 1.Described ball valve 7 is made of with placing valve seat 8 valve balls 9 interior and that cooperate with valve seat 8 inner chambers the valve seat 8 that is fixed in the body 1, be fixedly connected with on the valve ball 9 and drive rotating shaft 10, described handle 6 cooperates with driving rotating shaft 10 by the control valve system, described control valve system is, in the driving rotating shaft 10 of ball valve 7, be fixed with gear 11 by nut 23, cooperate with gear 11 and to be provided with tooth bar, one end of described handle 6 is a holding end, the other end is a drive end 12, one end of described tooth bar cooperates with the drive end 12 of handle 6, and the other end is provided with back-moving spring 13.Described valve seat 8 is provided with inlet opening 16 and apopore 17, respectively with go into aquaporin 2 and exhalant canal 3 is communicated with, its aperture cooperates with entry, exhalant canal aperture; Described valve ball 9 is provided with a through hole 18, and the aperture of described through hole 18 is less than the aperture of inlet opening 16, apopore 17.

In the present embodiment, described handle 6 is a lever construction, described tooth bar is the shaped as frame structure, the drive end 12 that handle 6 cooperates with tooth bar frame 14 is provided with the roller bearing 15 that is rotationally connected with handle 6, roller bearing 15 and tooth bar frame 14 back end in contact, teeth are arranged on the madial wall of tooth bar frame 14 and gear 11 engagements that are positioned at the shaped as frame inner chamber, and the rear end of tooth bar frame 14 cooperates with the drive end 12 of

handle

6, and 1 of front end and body are provided with back-moving spring 13.

In use, when opening spray gun, the handle 6 of holding with a firm grip, handle 6 rotates, its bottom is stuck in the buckle structure, the tooth bar frame 14 that the roller bearing 15 at handle 6 drive ends 12 places promotes to cooperate with handle drives end 12 travels forward, the back-moving spring 13 of compression and tooth bar frame 14 front ends, in this hour rack frame 14, under the drive of tooth bar frame 14, rotate counterclockwise, and then drive driving rotating shaft 10 rotations with tooth bar frame 14 meshed gears 11, and the valve ball 9 of bottom also rotates simultaneously, make the entry on through hole 18 and the valve seat 8 on the valve ball 9, apopore is communicated with, and current enter exhalant canal 3 by going into aquaporin 2 through ball valve 7, by spout 4 ejections; When closing, the handle 6 releasable catch structures of holding with a firm grip, back-moving spring 13 ejects, promotes tooth bar frame 14 motion backward, is driven with its meshed gears 11 to clockwise rotate, and drives rotating shaft 10 and drives valve ball 9 corresponding rotations, with valve ball wall blocking-up current, valve-off.

Claims

1. hand-held spray guns, it comprises a spray gun body [1], be provided with in the described body [1] into aquaporin [2] and exhalant canal [3], go between aquaporin [2] and exhalant canal [3] and be communicated with by valve, the port of export of exhalant canal [2] is provided with spout [4], go into the water inlet [5] of entrance point for being connected of aquaporin [2] with oral siphon, be provided with a handle [6] that is rotationally connected with body [1], it is characterized in that: the valve that aquaporin [2] and exhalant canal [3] are gone in described connection is ball valve [7], constitute with placing valve seat [8] valve ball [9] interior and that cooperate with valve base cavity by the valve seat [8] that is fixed in the body [1], be fixedly connected with on the valve ball [9] and drive rotating shaft [10], described handle [6] cooperates with driving rotating shaft [10] by the control valve system, includes gear ﹠ rack structure in the described control valve system.

2. hand-held spray guns according to claim 1, it is characterized in that: described control valve system is, in the driving rotating shaft [10] of ball valve [7], be fixed with gear [11], cooperate with gear [11] and to be provided with tooth bar, one end of described handle [6] is a holding end, the other end is drive end [12], and an end of described tooth bar cooperates with the drive end [12] of handle [6], and the other end is provided with back-moving spring [13].

3. hand-held spray guns according to claim 2, it is characterized in that: described handle [6] is a lever construction, described tooth bar is the shaped as frame structure, teeth are arranged on the madial wall of tooth bar frame [14] and gear [11] engagement that is positioned at the shaped as frame inner chamber, one end of tooth bar frame [14] cooperates with the drive end [12] of handle [6], is provided with back-moving spring [13] between the other end and body [1].

4. hand-held spray guns according to claim 3 is characterized in that: the drive end [12] that described handle [6] cooperates with tooth bar frame [14] is provided with the roller bearing [15] that is rotationally connected with handle [6], roller bearing [15] and tooth bar frame [14] one end in contact.

5. hand-held spray guns according to claim 1 is characterized in that: described valve seat [8] is provided with inlet opening [16] and apopore [17], respectively with go into aquaporin [2] and exhalant canal [3] is communicated with, its aperture cooperates with entry, exhalant canal [2] [3] aperture; Described valve ball [9] is provided with a through hole [18], and the aperture of described through hole [18] is less than the aperture of inlet opening [16], apopore [17].

6. hand-held spray guns according to claim 1 is characterized in that: an end of described handle [6] cooperates with buckle [19] on being located at body [1], constitutes buckle structure.