TWI298311B - Pump with pneumatic motor - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a pneumatic (compressed air operated) reciprocating motor, and more particularly to a pumping apparatus incorporating the motor for a fluid enthalpy. BACKGROUND OF THE INVENTION 1. In one embodiment, the present invention relates to an air operated liquid pump of US Patent No. 5,924,6 () No. 2 issued on July 2, 1989. An air operated liquid pump of the type disclosed in the above. In another example, the present invention relates to U.S. Patent No. 5,779,1 (> No. 5, "Air-operated Grease", which was issued on July 4, 1989. The present invention has been developed as a modification of the commercial version of the grease disclosed in the '105 patent, although disclosed in these patents, the disclosure of which is incorporated herein by reference. The liquid system and grease grabbing are generally satisfactory, but the system is susceptible to damage and shortened life's "premature maintenance." In addition, the plunger of the motor has a tendency to occasionally get stuck. SUMMARY OF THE INVENTION Among the items and features of the present invention, what is worthy of our voice is the provision of a pneumatic fruit for pumping off the fluid, that is, the provision of a house air operation type. · This is provided so that a pneumatic type is used in the rear motor to have a longer life (no need for 1298311 to be repaired); this pump is provided for one to live; and connected, In the design of the pump plunger, it is possible to avoid the card being a low-profile clerk, to be a low-cost person during the operation, and to be economical in manufacturing. In general, the present invention is used for dispensing-flowing a pneumatic reciprocating motor, a distributor, and a double plunger. The motor has a motor cylinder with a :: head end and a rod end ... a motor piston system reciprocable. The motor piston system has a front side and a rear side. The motorized base is reciprocally movable by a forward stroke toward the end of the rod member and a return stroke toward the end of the head, and tends to feed back through a return line. The plunger extends forwardly from the motor piston through the red end of the rod and is reciprocally movable by the motor piston. The cylinder system has an air inlet on the rear side of the motor piston that allows compressed air to enter for driving forward to counter the return bias on a forward stroke, the cylinder having an air outlet on the front side of the motor piston Above, used to ventilate the air. The motor piston has a through passage extending from its front side to its rear side. A valve train is movable relative to the motor piston between the position of a blocked passageway and a position of the unblocked through passage in the motor piston. The cylinder and motor piston system have auxiliary passages for delivering air under pressure from the rear side of the motor piston to terminate at one of the forward strokes of the motor piston, moving the valve to its unblocked position through the passage. The motor piston acts as a valve and ends at the forward stroke of the motor piston, enabling the auxiliary passage to open. The dispenser system includes a dispensing chamber and a dispensing piston, the dispensing piston being located in the dispensing chamber 1298311 and supported by the plunger for reciprocal movement corresponding to the reciprocating movement of the plunger. The dispensing piston system is further moveable relative to the plunger between a filling position for filling the dispensing chamber with fluid and a discharge position for discharging fluid out of the dispensing chamber. In another aspect, an automatic pressure operated fluid dispenser of the present invention includes a dispensing chamber, a reciprocally movable plunger, and a plunger having a tip. A dispensing piston is supported by the plunger in the dispensing chamber for reciprocal movement corresponding to the reciprocating movement of the plunger. The distribution piston system has at least one flow-through perforation through the distribution piston. The knife/tongue base can be moved further relative to the plunger between a filling position for the filling-distributing chamber to fill the fluid and a discharge position for discharging the fluid away from the dispensing chamber. One of the seals in the dispensing chamber is secured to the plunger for reciprocating movement of the left and right plungers for reciprocal movement of the plunger. The seal is positioned such that when the knives are in their filled position, the seal is separated from the splitter and the flow system can flow through the flow through. When the score is 0, the tongue is at the position where it is at its discharge position, and it will engage the seal and the flow of the gamma green 爪 / 爪 / claws through the flow through. A nut can be sleeved over the smooth outer surface of the tip and the head. ^=Yes--the dispensing piston is used and the nut has a complementary internal screw: the X-end has an external thread, and other objects of the invention are secured to the tip. And some of them are pointed out by the authors, and the #份为显者, and the middle of the text. [Embodiment] 8 1298311 严2 refers to the drawing 'especially with reference to the first figure' Second, "the whole is marked with the symbol 丄" is shown as including / motor / fruit unit (the whole is marked by the symbol 3), 1 ^ pump early 兀 3 series located in a hand with ginning The handle 5 is above the portion of the handle and extends forward from the handle. The motor and the recording unit include a pneumatically operated (reduced air operation type) reciprocating motor 7 for making a column of the Z fruit 11 Plug 9 (see the third to fifth figures) is moved back and forth. A grease is supplied to the worker and is extended downward from the department. The grease supply container 1 is folded toward the handle f. The pumping is performed at three places. The contraction air that causes the motor 7 to reciprocate the plunger 9 is under the control of a valve port 7 that can be operated by the trigger 19, via the passage 15 in the handle 5. It is supplied to the motor. The motor system includes a hand-to-hand grab handle to the upper end of the handle 5 to the uranium. The axis of the cylinder is indicated by Α - 于 in the third to fifth figures. As shown in the third to fifth figures, the cylinder 2 1 b and the head of the steam = The end portion 2 3 (the rear end portion thereof) and the hand grip handle the handle 5 are of an integral structure, preferably made of a suitable material from, for example, an ANSI die-cast 18 alloy. The rod end portion 25 (front end portion) is an attachment member formed by a portion of the body 2 7 of the pump, as will be described later in detail. The piston 2 9 made of a suitable plastic of guanamine can reciprocate in the cylinder 2 。. The piston 9 9 constituting the motor piston has a front side 3 丄 and a rear side 3 3 (see the sixth to eleventh) Fig.), which is reciprocally movable, from a retracted position adjacent to the head 2 of the cylinder 2 through the forward stroke of the 1298311 and the fourth figure toward the end of the rod of the steam rainbow. And reaching the extended position shown in the fifth figure, and returning to the head end 2 3 via a return stroke, The return stroke is subjected to a bias of a spring 35 to return it. The spring 3 5 is a helical compression spring that extends axially in the cylinder, with its front end seated in the steam know as with the symbol 3 The position indicated at 7 is at the end of the rod member 25 and acts against the piston to be biased rearwardly in the cylinder. The pump plunger 9 is included by the piston rod of the motor, and the plunger Or the piston rod member 9 extends forwardly from the piston through an axial bore 309 located in the end portion 25 of the ventilator, including an axial projection extending rearwardly from the end of the rod member 25. 4' and through an elongated forward extension 43 that constitutes the spring body: 7 of the pump tube. A seal 45 is provided at the rear end of the projection for the = plunger. The front end portion of the spring 35 is a %-wrap projection 41. The rod end portion 25 of the steam train 2 1 formed by the rear portion of the chest body body 27 has a rearwardly extending annular wall 4 7 which extends into a position in the front end of the cylinder 2 1 . The shape is inside the groove 4 9 . The #4 7 is for example secured by the screw 5丄 in the groove 49. In the embodiment shown in the third figure, the pump body 27 has a downwardly extending projection 53 formed at its lower end, and π has a cover 5 with internal threads. 5 to close the grease for the upper Tailiushan plus ^ -1 ^, and to attach the container to the grease to grab 1 . The container is a tube-type grease container comprising an elongated cylindrical container having a lower crotch body 57. In the container towel, at the upper end of the 1298311 driven rod member 59, there is a slave 6 which is used to force the supply of grease in the container to be upward and via the cover. One of the orifices 63 outputs and enters the perforations 39 through a grease passage 65 located in the projections 5 3 . The driven member 5 9 is driven in the cover 57 and has a handle 6 7 for holding it: :: a spring 6 9 in the container is pulled out, and by the conventional : The structure is rotated to lock it in the fully extended position. The container is supplied with grease (the follower 6 i is completely retracted by the driven rod member 59 against the partial housing of the spring 69) and is attached to the body by a resilient cover. The extent is closed to the upper end. As the body is removed, the container is threaded into the cover 5 at its upper end, and the driven member 59 and the follower 6 are released to force lubrication in the container 1. The grease can be moved upwardly corresponding to the upward bias of the spring 69. The 5 is provided with a venting valve 7 (Fig. (Different from the figure and the second mountain in the embodiment, the passage 15 includes a passage 7 extending from the braid of the handle 5 to the valve 17], and a passage extending to the cylinder 21 75, and the structure: and - from the 17th to allow #i, 隹α 1 private, abundance - 冓 became a cylinder for the work of rolling imports, in order to live the base of the 9 behind the oblique, and left 靡. A compressed air hose for the compressed air of the 丨4 S ^ f' flying cylinder is connected to the dust compressed air of the handle 5 - Fig. 7 ' to be supplied with the ram portion 1 7 make channel 7 3 and channel 7 5 "V car, S known as 'open the air inlet of the valve cylinder 2 1 7 5. ί... and supply the air to the flying system is shown as having a 1298311 two exit 乂 9 On the front side of the piston 29, for ventilation. The cylinder system can be:;:: a large number of air outlets. In the other, the air outlets of the air outlets are shown in the eighteenth figure. The upper part is used to restrict the flow and reduce the noise. The silencer is: one of the appropriate materials of copper. 垸,,,口月

=The official member 4 3 has a slightly enlarged outer or distal end 8 , the system includes a pipe joint 8 3 , and in the pipe joint 8 3 there is a back 8 5 ' it is yellowed 8 7 partial Close to the pump tube perforation 39. The motor piston 2 9 is in the retracted position (fourth figure), and the poly-plunger 9 (piston-only member)@胄-end end portion is located behind the grease passage 65. This configuration is such that the passage 65 and the perforation 39 are capable of injecting grease, and one of the pump plungers in the perforation 39 is forwardly viewed in the fourth figure to the left), and a grease is forced out. The pipe joint 8 3, and the check valve 85 is opened for delivery. The lubricant delivery hose 8 9 can be connected to the pipe joint 83.

The motor piston 92, as shown in the sixth to the figures, has a passage generally indicated by the reference numeral 91, which extends from its front side 31 to its rear side 33. A valve train, generally indicated by reference numeral 93, is movable relative to the motor piston in the motor piston between the second, fourth, and tenth views to block the passage and in the fifth figure. The position of the channel 9 1 is not blocked. Cylinder 2 1 and piston 2 9 have passages (labeled as auxiliary passages) generally indicated by reference numeral 95 for venting air under pressure from the cylinder 2 1 on the back side of the motor piston. The chamber is transported to end the forward stroke of the motor piston 12 1298311 2 9 to move the valve 93 from the position of the blocked passage 9 1 of the fourth diagram to the position of the unblocked passage 91 of the fifth diagram The motor piston 2 9 acts as a space itself, and at the end of the forward stroke of the motor piston, the valve pressurizing passage 9 5 is opened. - The passage 91 in the motor piston 29 comprises three three-way extensions in the length direction of the motor base that are spaced about the axis of the motor piston (which coincides with the axis AA of the cylinder 21) (eg, separated by 1) 2 〇 degrees) of channel 97. As shown in the tenth figure, each of the channels 9 7 has a front part 9 7 a and a rear end part 9 7 b 'the square piece 9 7 a is in the body of the piston And extending in the longitudinal direction of the piston, the rear end member 97b is located in an insert 9 9 which constitutes a two-seat, and the insert 9 9 is fastened in the recess 101 in the rear end portion and Form a part of it.阙 = $ can be moved axially in the motor piston 29 relative to the motor piston 29 &quot; in the fourth position of the passage 91 for blocking the valve seat 99 (i.e., blocking all two passages 9 7 ), And between the fifth map positions that do not block the passage 9 i (also = not blocking all three passages 9 7 ). The particular configuration of channel 91 can be varied without departing from the scope of the invention. It is recognized that in one embodiment, the aforementioned auxiliary passage 9 5 includes an inner recess 105 in a =, and a recess P i 〇 7 in the outer port P of the motor piston 2. The recessed work 5 is an annular recess, =1 surrounding the entire interior of the rice cooker 21, and spaced apart from the head 23 of the steam stop 21 - defining the distance of the forward stroke of the piston 29. Or the 'recess 1 〇 5 series may include a plurality of separate @, curved recesses, such as 13 1298311% configured to be spaced around the interior of the cylinder 2 1 , or may be a single recess, which is only Extends around one part of the entire circumference. The recess 1 〇7 is an annular recess which extends around the circumference of the piston 2 and is adjacent to the front end of the piston: the front seal i 0 9 and one position on the piston And adjacent to the rear of the rear: between the seals 1 1 ,, for the piston to slidably seal in the steam red 21 . Each of the seals 1 〇 9, iii includes a flexible passage section ring 113 (see the tenth view) which is seated in a circumferential groove 1 1 5, 1 1 7 in the piston 29. Among them, 1 3 is in which t has an elastic (rubber) ring 2 } 9. The ring circumference of the ringing (which is sealed against the cylindrical surface of the inner cylinder 2 ι) has a ribbed configuration. </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> The base 3 of the 2 攸 匕 纵向 纵向 纵向 纵向 纵向 纵向 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕 匕At the rear end, the 91 produced by Qiu, especially the three-way $9 7 system that is closed at the valve seat, has a ring-shaped elasticity (for example, tamper-proof 2 7 is set in a groove 丄2 9 The , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 3 被 is shaped - 1 cylinder at the rear end. The stem shank 123 is shaped at its front end. 14 1498311 (labeled as an auxiliary piston) ά ^ if # 9 Q i 辅助 Auxiliary piston 1 3 5 is an auxiliary steam that can be slidably sealed in the motor piston 2 9 Among the cylinders ^ 3 cylinders 1 3 1 , the auxiliary pistons 1 3 5 have a sealer 3 7 held in it 1 n ^ 4 曰 1 3 9 . The pass, 1 0 3 series includes a channel and a ^ ^ 9 Q , . ^ ^ an angle of the channel 1 4 1 , which is a recess from the motor base 29] η. # 乂 7 is extended to the auxiliary cylinder 1 on the side of the auxiliary piston 1 3 5 . The screw compression motor piston returns to the back of the 5th page 3 5 is at the end of the magazine 3 $ (the right end is as the first R # (5) ^ 3 5 after the side, - Figure, the fourth picture, the fifth picture And as explained in the tenth figure), via one?昼益Λ彳金0 Without a seat 1 4 3 and acting on the front end of the motor active base J 9 , 遛 green, go, — 5 flat cultivating seat 1 4 3 is by a bit in the horse violation base Before the 9 9 square mother # u &amp; ° 之 can be radially slid in all directions of the disc. The piston rod member 9 (pump plunger) extends forward from the disk, and a reduced-size rear end portion 45 is sleeved in a central opening in the disk. This configuration prevents the piston rod 9 (pump plunger) from jamming. The detailed structure of the compressed air inlet valve i 7 is not critical, and it is pointed out that as shown in the fourth, fifth, thirteenth and fourteenth figures, the most instructor should be sufficient. The system includes a valve seat 147 and an intermediate component assembly i 5 1 . The valve seat 147 is located in one of the recesses 4 1 4 9 of the handle 5 and is accessed via the passage 7 3 in the handle. The supply of compressed air 'and the valve element assembly 151 is biased by a spring 1 53 to a closed position that blocks the passage 7 5 from the passage 73 and can be moved as the puller 19 is pulled An open position for conveying compressed air through the passage 5 to the rear end of the motor cylinder 2 1 . The trigger is pivoted at 15 5, at 15 1598311 above the handle 5. The operation is as follows: As the trigger 1 is pulled and held, the compressed air is supplied to the cylinder 2 from the compressed air hose 7 via the passage 73, the trigger operating valve χ 7, and the passage 75. 1 is a chamber at the rear side 3 3 of the motor piston 2 9 . The motor piston 2 9 is thus a relatively fast reciprocating-cyclic movement, one of the forward strokes of the motor piston 29, which is adjacent to the head end 2 of the cylinder 2 1 from the fourth (and third) diagram. The retracted position of 3 moves to the forward position of the fifth figure, and in a return stroke, the system returns to the retracted position of the fourth figure. The valve 93 in the motor piston is closed for the forward stroke of the mother (how to be explained later) to block the passage 9 1 in the motor piston 29 (all three passages 9 7 ), and The compressed air is thus kept on the rear side 3 3 of the motor piston so that it does not leak through the passage 91 and enables the forward stroke to be performed. During the movement through the forward stroke, the motor piston 29 compresses the spring 35, thereby urging the active base 29 to bias back. Before the horse violates the piston, the motor chamber on the side 3 1 is exhausted by each of the forward strokes of the motor piston 2 9 and by the vent 7 9 . The blockage of channel 9 1 (all three channels Q ^ \ ) occurs by the engagement of the elastomeric valve head 1 27 with the valve seat 9 9 (see fourth and tenth views). Motor piston 2 9 Each return (backward) stroke corresponds to the rear-motor piston seal 1 1 1 reaching the recess 1 〇 5 in the cylinder 21 during the movement of the seal 1 1 1 with the motor piston 2 9 . Started as 'as shown in the fifth and twelfth figures, while allowing compression 16 1298311 on the rear side 3 3 at the chamber via auxiliary air can flow from the motor assist channel 9 5 to the auxiliary piston辅助3 5 (valve piston) The auxiliary cylinder 1 3 1 on the front side (which can be labeled as a valve cylinder). This valve-actuated flow of compressed air flows to the auxiliary cylinder i 3 i via steam red 2 1 The concave portion 0 7 ' flowing into the motor piston 29 at the recess 1 0 5 is as illustrated by the arrow in the twelfth figure, and from the recess 1 0 7 via the passage 1 4 1 (the tenth figure) And flowing into the chamber on the front side of the auxiliary piston 1 3 5 (valve piston), and by making the head of the valve 9 1 1 7 7 Move away from the valve seat 9 9 to cause the valve 9 3 to move rearward relative to the motor piston 2 9 to not block the passage 9 1 (channel 9 7) to the open position in the fifth figure. As the passage 9 i is not blocked The '$ gas system will leak from the chamber on the rear side 3 3 of the motor piston 2 9 in the steam red 2 1 to the position in the cylinder 2 1 before the motor piston 2 9 (4), and through the ventilation The air is ventilated by the port 79. Thereby, the air pressure on the rear side 3 3 and the air pressure on the front side of the motor piston 2 9 are substantially equalized, and the motor piston returns to the rappelling? G answer, # 2 1. Ping Yin, db connect &amp; and push the motor piston 2 9 back through the return stroke. When the motor piston 29 returns to the valve 9 3 , the rear end 1 2 3 e of the valve 9 3 will be connected The head end 23 of the cylinder 2 i stops moving (immediately). The motor piston 92 continues its rearward (return) movement - the short interval of the section 'slids backwards relative to the now blocked valve 93 At the junction of the valve seat 9 9 and the valve head i 2 7 , and thus the reading 9 3 is closed (the block 9 i is blocked) to ensure the motor The forward stroke of the plug. The degree of noise is significantly reduced by providing a spacer for the rear end of the valve 9 3 and a 17 1298311 buffer 1 5 7; 4 vertical, 曰, τ are significantly reduced, buffering The device 1 5 7 = a disc of elastic material (for example, rubber), which is placed in a recess 159 located at the end 23 of the head of the cylinder as shown in the fourth and fifth figures The per-forward stroke of the piston 2 9 of the plug acts as the column of the chestnut. β “The dry 9-piece will move forward through the pressure stroke and the pump will pass the second: the grease will be delivered to the tube. The joint 83 (and thus the pass/by 7), and the check room 85 is opened for this transport. And in the mother-return stroke, the pump 1 1 is refilled. = Don't pay attention to the fact that the main body of the motor piston 29 is made of a plastic part with a weight of the field (a single-piece part::: It is helpful in the ease of operation of the grease) The structure uses a fairly light return spring, while allowing the grease to grab - enough to operate at a low air dust force (for example, at 4 psi). Another noteworthy feature is the ability to fight An attempt to lubricate a blocked bearing or grease joint. Another embodiment of the present invention shown in Figures 15 through 22 is generally indicated by the symbol 160. The pump system for dispensing a fluid is particularly suitable for dispensing a low viscosity or medium viscosity fluid from the volume 6. The examples of fluids are mineral or synthetic motor oil, solvent, toluene, anti-rolling agent, block. Wind-glass cleaning agent, as well as transmission or brake fluid. The first application of the application of the fruit of 1 6 0 is illustrated in the fifteenth figure, in which the system is positioned above the container i 6 3 , Chestnut with a fast dip into the container 18 1 298311 官1 6 5. In one embodiment, the dip tube 5 6 5 has a large, 'spooned 36 length, which is sufficient to reach the bottom of many lubricant barrels. What we understand is that dip The tubing can be of any length or can be non-rigid so that the pumping system can be located away from the container or at any location relative to the container. A plugger 7 7 is provided at the opening of the container worker for Keep the dip tube i 6 5 in an upright orientation and prevent dust or other contaminants from entering the container surrounding the dip tube. Pump 丄 6 = has an outlet 丄 6 9 connected to a dispensing hose i 7丄Points = hose 1 7 1 is mounted on a reel 丄 7 3 to: :: deliver to the - distal position. The second application of the fluid is described in the tenth: In I, the exit 丄6 9 is connected to a rigid faucet member 1 75 ' to transport fluid to a portable container (not shown). Refer to Figure 17 and +8 - Brother 18: 'Pump 1 β 〇 is combined with the gas used in the grease gun 1 The type of motor 7 is as follows. As previously stated, the components of the motor and the action of the motor will not be described here. The pump system includes a substantially symbolized by the symbol Ί 7 Γ7 π Μ 7.7 The distributor is a casing 1 7 包围 enclosing the cylinder 2 1 and the circular cylinder π 八 π - ^ and the cylindrical distribution chamber 1 8 1 . The interior of the cylinder 2 1 is another eight - 丄 卜 八The internal part of the file chamber 1 8 1 is separated by an inner wall 1 8 3 , and the inner lining 1 8 3 system has a plunger perforation through the basin 1 8 5 . The posterior teeth, f 1 « ^ ^ soil 9 series extend through the column base hole 1 8 5 in a sliding engagement manner into the distribution chamber. A gas inlet fitting Ί β 7 , 8 7 is provided on the outer casing 179 which is in contact with the head of the cylinder 2 1 and is connected to the θ ^ y. The connector 19 1298311 is shown with internal threads for engaging a light fitting with complementary external threads and an air supply hose (not shown) to the housing 1 to be under pressure The air is supplied to the cylinder 2 1 . A separate manual control (not shown) will be provided to control the flow of air under pressure through the supply hose to the cylinder 21. A fluid supply inlet fitting 1 8 9 is provided with internal threads for engaging a complementary external threaded end of one of the dip tubes 165. The flow system is directed into the distribution chamber 1 8 1 by supplying an inlet fitting 1 8 9 and a passage 1 9 1 . Joints 1 8 7 and 1 8 9 are merely examples for supplying a pressurized gas and fluid to operate the inlet of the pump. Other inlets or methods for providing gas and fluids can be utilized without departing from the spirit of the invention. A check valve 1 g 3 (figure 17) is positioned in the dip pipe 65 to prevent backflow of fluid so that the fluid column in the dip tube will not fall after the pump has reached a stroke Go back into the container 1 6 3 . In the case of the squad, the squadron 9 3 is a ball valve that is positioned adjacent to the smashing &amp; When the flow system is received from the container into the 4' of the parent, the system will leave the ball 1 9 5 away from its receptacle 1 9 7 and the body will continue to pass through the fluid supply inlet joint 1 8 9 and the passage

Two cattle; broke into the distribution room 1 8 1 . The valve system includes a lifting member 1 9 9 for Jiang Kui, M q A n , and the ball 1 9 5 is kept close to the receptacle 丄g 7 ° The valve system can be in the ^ μ a , κ ΗΗ Eight at his position, or have other forms and will not be a fan of the invention.

The faucet pipe fittings 1 7 R b are connected by a coupling member 2 0 1 to the distribution chamber 20 1298311, and the coupling member 2 Ο 1 is screwed through one side wall of the casing 179 for distribution The chambers 1 8 1 are connected to each other. At the other end of the faucet pipe is a mesh cover 2 〇 3 and a valve 205 which is selectively opened and closed by manipulation of a manual handle 2 〇 7. A dispensing piston, generally indicated by the symbol 209, and a cooperating sealing plate, generally indicated by the symbol 211, are supported on the plunger 9, as shown in Fig. 18. By. The distribution piston 2 0 9 is mounted for sliding movement with respect to the plunger 9, and the sealing plate member 21 is mounted in a fixed position with respect to the plunger 9. It is to be noted that one end of the plunger 9 has a tip end 21 1 with an external thread. Some systems of the prior art have a tip with a cavity and internal threads which results in a small material thickness and therefore tends to rupture. The tip 2 i 3 of the present invention is structurally solid to provide improved strength. An external thread is placed over the tip. A nut 2 i 5 having a complementary internal thread can be nested over the tip end 21 1 . The sealing plate member 2i (the twenty-first and twenty-second figures) has a central opening 217, which is sleeved over the tip end of the plunger. When the nut 2 15 is screwed on the tip end 2丄3, the nut will engage the sealing plate member 2 and fasten against the sealing plate member 21, and thus the sealing member It is held between the end of the nut and the shoulder 2 χ 9 on the plunger 9. The sealing plate member 2 1 is fixed: a fixed position 4 on the plunger so that the sealing plate member can reciprocate in the dispensing chamber about the plunger. 21 1298311 The thread 1 has a shank with a smooth, cylindrical outer surface 2 2 1 and an enlarged head 2 2 3 . The distribution piston 2 〇 9 (the nineteenth and twentieth drawings) has a central aperture 2 25 that is sized to be nested over the outer surface 2 2 1 via a slip fit so that The dispensing piston is free to slide in the longitudinal direction of the nut 2 15 . The distribution piston 2 〇 9 is clamped on the nut 2 15 for longitudinal sliding relative to the plunger 9 between a filling position (18th figure) and a discharge position (fifteenth drawing) Between the filling positions, the dispensing piston is spaced apart from the sealing plate 2 i 并且 and adjacent to the enlarged head 2 2 3, while in the discharge position 4, the dispensing piston is adjacent to the sealing plate and Separated from the enlarged head. Three elliptical flow L orifices 2 2 7 are spatially arranged to surround the central orifice 2 2 5 . The distribution piston 2 0 9 has a simple, inexpensive structure comprising a flat circular washer 2 2 9 , a circular ring receptacle 2 3 1 , and an outer sealing ring 2 3 3 (18th to 20th). Both the loop 2 2 9 and the ring receptacle 231 are preferably formed by a metal stamping process and are fixed in a face-to-face relationship by spot welding. The ring receptacle 2 3 has a central aperture that has the same dimensions as the (iv) central aperture and is aligned with the central aperture 2 2 5 of the piston. The ring receptacle also has three flow apertures that are spatially configured to surround the central aperture thereof ... are configured and positioned to align with the flow aperture of the collar to define a flow aperture 2 27 . Ring body receptacle 2 3 丄 么 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 形成 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形 环形Formed from s - an annular groove 2 3 9 ' 3 9 , Wei will:: Wang ¥ around the distribution of the piston 2 〇 9 around. The groove 2 jy connects the sealing ring 2 q Q too ^ # # # # to it, and is dimensioned into a chamber branch = the sealing ring in the groove will slide and seal the joint against the distribution valley to 18 The inner surface of 1. Including::: =1 also has a simple, inexpensive structure, holding 2 4 3 H "sealing washer 2 4 1 - a circular 0-shaped environmental symbol 4 J 4 3 and a split ^ f The gasket 2 4 1 and n &lt; 2 4 5. Preferably, the seal: the ring retainer 243 is formed by a non-expensive metal stamping process and is solidified by spot welding ::

(4) The township will be formed - a circle around W 7 . The outer diameter of the sealing collar 2 41 is slightly smaller == the outer diameter, so that it will not come close to the inside of the dispensing chamber η! The ring 2::τ... circle is aligned, and when used, these central apertures are used to define the central aperture 2丄7. Each of them will form a flange around its circumference, which is: an outer surface 249 with a:: imperme, which faces radially inward toward the seal:: cone: taper outer surface 2 4 9 In the 0-ring holder 2 4 3 ::. : a circular edge is formed and also an annular groove 25 is formed on the side of the sealing member 2 1 1 facing the dispensing piston. The factory is sized to be slightly smaller than the diameter of the grooved grooving groove 4 (Fig. 18), and the circular center will be. Shape 23 1298311 in the annular groove. The diameter of the perforation 2 27 which is fixed by the sealing plate member 21 is sufficiently large to completely fit the piston with the piston. When d:::;:1 is assembled onto the plunger 9, the tip of the plunger penetrates the distribution = 2 and 2, : 217. The cap 215 is sleeved into the central orifice 2 2 5 and is rotated to 吏 =: the thread can engage the external thread of the tip. Nut 2: Seventeen: The (4) plate member 21 is firmly attached to the plunger 9 in the position and orientation as shown in the first and the eighteenth drawings. This also applies a sub-base 20.9 to the plunger 9 for sliding movement of the dispensing piston 1 between the enlarged head 2 2 3 of the nut and the sealing plate member 2! A fluid to be dispensed, such as a lubricant, is supplied to the distributor 177 via its potential 1 n r- _ ^. The flow system can be drawn from the external source through the dip tube&apos; or can be provided to the knife by other methods discussed, for example, by 彳田, 闰(7). The supply of fluid will pass through the supply passage 191 and into the right side R of the distribution chamber 181, &gt; to the right of the distribution piston 209 as seen in Fig. 18. An air pressure source is then connected to the air pressure inlet fitting 丄8 7 . The dispenser is then ready to be stunned. This operation of the air motor 7 causes the plunger 9 to reciprocate through the branch plug perforation 1 8 5 . The plunger 9 is retracted through the column base hole ' corresponding to the retracted position of the air motor/tongue plug 5 2 in the cylinder 54 and is advanced through the cylinder 5 corresponding to the piston 5 2 . 4 while moving forward through the plunger perforation. 24 1298311 When the plunger 9 is moved to its retracted position, it will move to the right, as seen in Figures 17 and 18. This movement system causes the column base 9 to complete the sealing plate member 2 and the distribution piston 2 〇9 to the right. The sealing plate member 2 1 1 and the nut 2 1 5 system are fixed to the plunger 9曰Ik moves on the base of the column. However, the distribution piston 2 〇 9 is mounted for movement of the outer portion of the nut 215. When the plunger 9 is moved to the right, the dispensing piston will slide to the left relative to the plunger 9 to its discharge position. For example, the one shown in Fig. 18 is shown. What can be seen by us is that the knife-fitted living base is clamped at its discharge position relative to the plunger 9, and the sealing plate member 21 is separated from the distribution piston to expose the flow orifice. 2 2 7 This system allows any fluid on the right side R of the distribution chamber to pass through the circumference of the closure member, through the distribution orifice 2 2 of the distribution piston 2 〇 9 and into the distribution. The left side of the chamber L (which is on the left side of the distribution piston 'as shown in the eighteenth figure). On the left side, the : system is in a position ready for distribution, and the allocation $ room 1 8 1 ▲ is filled. The distribution piston 2 Q 9 system will stop sliding the phase plunger to the left with the joint portion 2 f 3 , and then the system will move to the right together with the stopper. When the plunger 9 is moved toward its forward position, it will move to the left as seen in the seventeenth and eighteenth figures. When: plug = move to the left, the sealing plate 2 fixed to the plunger is also moved to the household. However, the 'distribution piston now slides over the outside of the nut: the core 21 towards the sealing plate member 211' until it occupies its discharge position relative to the column 9' where it will abut against the seal 0 25 1298311 Ring 2 4 5. This system seals the flow through holes 2 2 7 in the discharge position. As the plunger 9 continues to advance to the left as seen in Figures 17 and 18, the dispensing piston 2000 will pressurize (or push the fluid) any fluid on the left side B of the dispensing chamber. So that it passes through the export work and enables it to be selectively distributed. When the dispensing piston is moved, the leftward movement of the dispensing piston also creates a vacuum pressure that draws fluid through the dip tube 165 and refills the right side R of the dispensing chamber 丄8丄. In view of this, it will be seen to us that the items of the present invention are achieved and other advantageous results are obtained. Although various changes may be made to the above-described structure without departing from the scope of the invention, it is intended that all of the content contained in the above description or shown in the accompanying drawings should be construed as a description. =^ Not for restrictions. The introduction of the components of the invention, or the word "and", is meant to mean that there are one or more components. The words "including", "including", and "having" are considered to be inclusive and mean additional parts in addition to those listed. 13 [Simple description of the drawing] The end view is the one shown in the figure. The second figure of the grease is the one shown in the left side of the first figure. Department is omitted; 3 section cut

The second diagram is a diagram generally taken along line 26 of the second diagram, and the fourth diagram is an enlarged excerpt view of the third diagram; the fifth diagram is a view corresponding to the fourth diagram, which shows the components. a moved position; the /, is a perspective view of one of the motor pistons of the grease gun; the seventh figure is a side plan view of the motor piston; the eighth figure is the motor piston substantially along the line of the seventh figure a cross-sectional view of 8 _ 8;

The ninth figure is the left end view of the seventh figure; the tenth figure is the longitudinal cross-sectional view of the motor piston substantially along the line IX of the ninth figure; the eleventh figure is the seventh figure And the right end view of the eleventh figure; the twelfth figure is an enlarged excerpt view of the fifth figure; the thirteenth figure is a cross-sectional view of the grease-operated trigger-operated valve; the fourteenth figure is the tenth The left end view of the three figures;

*The Fifteenth Figure is a perspective view of a system embodying the present invention with an attached hose for dispensing a fluid; Le16 is a perspective view of the pump of Figure 15 The pump system has a distribution faucet pipe; the seventeenth figure is a longitudinal cross-sectional view of the pump of the sixteenth figure, which shows a distribution piston at a discharge position, ·, tenth The eight figure is an enlarged cross-sectional view of the chestnut, but shows that the distribution is located at a filling position; the nineteenth is the end view of the distribution piston; 27 1298311 The twenty-first figure is the line along the nineteenth figure 2 0 - 2 0 is a cross-sectional view; 21 is an end view of a seal; and the second + 2 is taken along the second + - figure 2 2 - 2 2 Section view. In the drawings, the same component symbols refer to the same components. [Main component symbol description] 1 Grease gun 3 Motor/pump unit 5 Sectional hand grip handle 7 Reciprocating motor / air horse 9 Plunger 1 1 Pump 1 3 Grease supply container 1 5 Channel 1 7 Valve 1 9 Trigger 2 1 Cylinder 2 lb Cylinder 2 3 Head end. 2 5 Rod end 2 7 Pump body 2 9 Piston 28 1298311 3 7 3 9 4 1 4 3 4 5 4 7 4 9 5 1 5 2 5 3 5 4 5 7 5 Front side rear side spring front end axial perforation protrusion 'long end forward extension seal rearwardly extending annular wall _ annular internal groove screw air motor piston projection cylinder internal threaded cover body Follower member β Follower orifice Grease passage 6 7 Handle 6 9 Spring 7 1 Vent valve 7 3 Channel 29 1298311 7 5 7 7 7 9 8 1 8 3 8 5 8 7 8 9 Channel compressed air hose air Outer or distal end pipe joint check valve with slightly enlarged outlet/vents Spring lubricant delivery hose channel 3 Valve 5 Channel 7 Channel 9 7a 9 7b 9 9 10 1 10 3 10 5 10 7 10 9

Front part rear end part insert / seat recessed passage inner recessed outer recess seal seal ring circumferential groove circumferential groove 30 1298311 1 2 3 e elastic (rubber) ring configuration rod handle stem rear end 1 2 5 12 7 12 9

13 7 13 9 14 1 14 3 14 5 14 7 14 9 15 3 15 5 15 7 15 9 16 0 16 3 Orifice head groove front end / auxiliary cylinder rear end piston seal groove passage spring seat rear end Seat recessed valve element assembly spring trigger pivot damper recessed pump container 31 1298311 16 5 16 7 16 9 17 1 17 3 17 5 17 7 17 9 18 1 18 3 18 5 18 7 18 9 19 1 19 3 19 5 19 7 19 9 2 0 1 2 0 3 2 0 5 2 0 7 2 0 9 2 1 1 Dip tube plug outlet distribution hose reel faucet fittings distributor housing distribution chamber wall plunger perforation air pressure inlet fitting fluid supply inlet Connector Supply Channel Check Valve Ball Housing Stopper Coupling Mesh Valve Manual Handle Dispensing Piston Seal Plate 32 1298311 2 1 3 Tip 2 1 5 Nut 2 1 7 Center Hole 2 1 9 Shoulder 2 2 1 Nut outer surface 2 2 3 head 2 2 5 central aperture 2 2 7 flow perforation 2 2 9 washer 2 3 1 ring body receptacle 2 3 3 seal ring 2 3 5 annular shoulder 2 3 7 annular flange 2 3 9 annular groove 2 4 1 sealing washer 2 4 3 〇 ring holder 2 4 5 〇 ring 2 4 7 surrounding flange 2 4 9 outer surface 2 5 1 annular groove

33

Claims (1)

1298311 X. Patent application scope: 1. A pump for distributing a fluid, which directly supports the duplex horse it, , ν , and includes a pneumatic type, a horse transport, a distributor and a master type plug/ ..., the reciprocating drive is driven by the 'the motor system includes: a motor steam red at the end, which has a head end portion and a rod member 6 - a motor piston that can reciprocate to the cylinder Among them, the 2 series has a front side and a rear side, and the motor piston is reciprocable via the L stroke toward the end of the rod, and the return stroke toward the end of the shaft And tends to return via a return stroke; the plunger extends forwardly from the motor piston through the end of the rod of the cylinder and is reciprocally movable by the motor piston; the cylinder has an air Imported on the rear side of the motor piston, which allows compressed air to enter for driving the motor piston forward against a return bias via a forward stroke, the cylinder having an air outlet in front of the motor piston Upper portion for venting air; the motor piston has a through passage extending from a front side thereof to a rear side thereof; a valve movable relative to the motor piston in the motor piston to block the through a position of the passage between a position not blocking the through passage; the cylinder and the motor piston having an auxiliary passage for conveying air under pressure from the rear side of the motor piston to 34 1298311 Motor: One of the plugs is at the end of the forward stroke, moving the valve to its through-passage:: position i „Hai motor piston acts as a valve, and at the end of the forward stroke of the motor piston, the auxiliary passage Being capable of opening; and wherein 'the dispenser comprises: a dispensing chamber; a dispensing piston' is located in the dispensing chamber and supported by the plunger to correspond to the plunger Moving and reciprocating, the dispensing piston is further movable relative to the plunger between one for filling the dispensing chamber for fluid filling The position is between a discharge position for discharging fluid away from the dispensing chamber. 2. The pump of claim 1, wherein the dispensing piston has at least one flow-through perforation through the dispensing piston and further includes a seal that is secured to The plunger in the dispensing chamber is positioned relative to the dispensing piston such that at its filling position, the dispensing piston is spaced from the seal such that the flow system can flow through the perforation, and At its discharge position, the dispensing piston is engaged with the seal to prevent fluid flow through the perforation. 3. The pump of claim 2, further comprising an inner wall separating the dispensing chamber from the cylinder, an orifice passing through the inner wall and the plunger is from the piston Extending through the orifice into the dispensing chamber. 4. The pump of claim 2, wherein the column base has a tip and further includes a nut that can be sleeved over the tip, the nut having a smooth outer surface and a head unit. 35 1298311 The fruit of claim 4, wherein the tip has an outer pair of jaws, and the nut has complementary internal threads. 6. The pump of claim 5, wherein the tip is ', has a substantially solid structure without an internal cavity. 7. The pump of claim 5, wherein the split tongue further comprises a central wear &amp; for engaging a 4 nut by a sliding fit to cause the dispensing piston It is mounted to slide along the smooth outer surface of the nut. 8. The pump of claim 6 wherein the dispensing sub-system is clamped to move along the plunger between the head of the nut and the seal. 9. An automatic pressure operated fluid dispenser comprising: a dispensing chamber; a reciprocally movable plunger having a tip; a dispensing piston located in the dispensing chamber Relatingly supported by the plunger for reciprocating movement corresponding to reciprocating movement of the plunger, the dispensing piston having at least one flow-through perforation therethrough, the distribution piston being relative to the column The plug is further moved between a filling position for filling the dispensing chamber with fluid and a discharge position for discharging fluid away from the dispensing chamber; a seal located in the dispensing chamber, Retained to the plunger for reciprocal movement as the plunger reciprocates, the seal being positioned such that the seal is positioned 36 1398311 at the filling position of the dispensing piston The piece will pass through the flow through the dispensing activity, and at the time the 'the dispensing piston will engage through the flow through hole; and the plug is separated, And the flow system can distribute the piston to the seal at its discharge position, and prevent the flow of fluid from a nut that can be sleeved on the tip, having a smooth outer surface for supporting the dispensing piston and a head Wherein, the tip of the base of the column has an external thread, and the nut has a complementary internal thread to be fastened to the tip. 10 The fluid dispenser according to claim 9 of the patent application, Wherein the tip has a substantially solid structure without an internal cavity. The fluid dispenser according to claim 9 of the patent application, the movable turret supporting the living base further comprises a central portion a perforation for splicing the screw # by a slipping manner so that the dispensing piston is mounted to slide along the smooth outer surface of the nut. Cry, ^ 2, according to the patent application scope The fluid distribution of item i, wherein the dispensing piston is clamped to move between the head of the nut and the seal along the tampon. Schema: as the next page 37