CN221120264U

CN221120264U - Stable high-flow plunger pump

Info

Publication number: CN221120264U
Application number: CN202322630895.4U
Authority: CN
Inventors: 陈晓峰; 吴杨飞; 安刚; 胡青
Original assignee: Suzhou Zhuozhao Dispensing Co Ltd
Current assignee: Suzhou Zhuozhao Dispensing Co Ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-06-11
Anticipated expiration: 2033-09-27

Abstract

The utility model discloses a stable high-flow plunger pump, comprising: the cylinder, the upper end of vertical setting and the cylinder liner of the body portion connection of cylinder and set up the pressure disk under the cylinder liner, an upper chain axle of vertical extension is installed to the piston rod lower extreme of cylinder, a glue outlet has been seted up on the lateral wall of cylinder liner upper end, on the inner wall of cylinder liner and be located glue outlet top is provided with an radially inwards flange portion, upper chain axle outside and the top that is located flange portion cover have upper metal ring, lower metal ring and a plurality of along the first sealing washer, the second sealing washer of vertical direction staggered arrangement between upper metal ring and lower metal ring, upper metal ring, first sealing washer, second sealing washer all open respectively towards the V type groove of extending along the circumferencial direction on the lower surface of cylinder liner inner chamber. The utility model can always maintain the stability of the sealing of the upper end of the glue outlet on the basis of realizing the outward continuous output of the glue outlet, and avoid the great shortening of the service life.

Description

Stable high-flow plunger pump

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a stable high-flow plunger pump for gluing in a photovoltaic processing production line.

Background

The plunger pump is an important device in a hydraulic system, realizes oil suction and pressure oil operation by changing the volume in a cavity, is often used for occasions where high pressure, large flow and flow are required to be regulated, and is also often used for controlling the flow of glue solution during glue spraying.

When the plunger pump in the prior art reciprocates, the sealing requirement on the working cavity is high, and the sealing performance easily influences the stability of the glue outlet.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a stable high-flow plunger pump, which can always maintain the stability of sealing the upper end of a glue outlet on the basis of realizing the outward continuous output of the glue outlet, and avoid the great shortening of the service life.

In order to solve the technical problems, the utility model adopts the following technical scheme: a stable high flow plunger pump comprising: the cylinder, the cylinder liner with the upper end connected with the main body of the cylinder and the pressure plate arranged under the cylinder liner are vertically arranged, the lower end of the piston rod of the cylinder is provided with an upper linking shaft which extends vertically, the lower end of the upper linking shaft penetrates into the cylinder liner, the center of the pressure plate which is used for being matched with the inner side wall of the cylinder in a sealing way is provided with a glue inlet hole communicated with the inner cavity of the cylinder liner, the side wall of the upper end of the cylinder liner is provided with a glue outlet, the inner wall of the cylinder liner is provided with an inner flange part which is positioned above the glue outlet and is inwards along the radial direction, the upper connecting shaft is characterized in that an upper metal ring, a lower metal ring and a plurality of first sealing rings and second sealing rings which are arranged between the upper metal ring and the lower metal ring in a staggered manner along the vertical direction are sleeved on the outer side of the upper connecting shaft and above the inner flange part, V-shaped grooves extending along the circumferential direction are formed in the lower surfaces of the upper metal ring, the first sealing ring and the second sealing ring, which face towards the inner cavity of the cylinder sleeve respectively, the upper end faces of the first sealing ring, the second sealing ring and the lower metal ring are V-shaped inclined faces which can be matched with the V-shaped grooves above the first sealing ring, the second sealing ring and the lower metal ring respectively, a compression nut is connected to the inner wall of the upper end of the cylinder sleeve through threads, and the lower end faces of the compression nut are in compression contact with the upper surface of the upper metal ring and the upper surface of the inner flange part.

The further improved scheme in the technical scheme is as follows:

1. In the scheme, the lower end of the cylinder sleeve is connected with a glue passing sleeve in a sealing way, the lower end of the glue passing sleeve with a sealing plate at the upper end is connected with a glue sucking cylinder in a sealing way, the lower end of the glue sucking cylinder is embedded into a glue inlet through hole on the pressure plate, the lower end of the upper linking shaft is connected with a lower linking shaft through a connecting rod, and the lower end of the lower linking shaft which vertically extends penetrates through the glue passing sleeve and is provided with a glue scraping spoon;

The sealing device is characterized in that a movable piece capable of moving in the vertical direction is arranged in the glue passing sleeve and positioned below the sealing plate, the movable piece is sleeved on the lower connecting shaft in a sealing manner, the lower part of the movable piece can be in sealing fit with the upper end of the glue sucking barrel, so that a glue inlet chamber is formed between the glue passing sleeve, the glue sucking barrel and the movable piece, a movable sleeve is sleeved outside the connecting rod, a stop part is arranged above the movable sleeve capable of moving in the vertical direction, the outer surface of the lower part of the movable sleeve is in sealing connection with the inner wall of the cylinder sleeve, so that a glue storage chamber is formed between the lower part of the movable sleeve and the sealing plate of the glue passing sleeve, the lower end of the connecting rod can be in sealing fit with the upper surface of the protruding part, and a glue outlet chamber is formed between the movable sleeve and the connecting rod, glue inlet chamber is communicated with the glue storage chamber through a plurality of glue passing through holes formed in the sealing plate, and a glue outlet hole communicated with the glue outlet chamber is formed in the side wall of the upper part of the movable sleeve, and a glue outlet channel is formed between the glue outlet hole and the glue outlet of the cylinder sleeve.

2. In the above scheme, the stop part is arranged at the lower part of the upper link shaft.

3. In the scheme, a lower nut is connected to the outer wall of the lower end of the cylinder sleeve through threads, and the lower nut is sleeved on the outer side of the glue passing sleeve and is in sealing connection with the outer wall of the glue passing sleeve.

4. In the scheme, the inner walls of the upper metal ring and the lower metal ring are in clearance fit with the outer wall of the upper link shaft.

5. In the scheme, the inner wall of the first sealing ring and/or the second sealing ring is in interference fit with the outer wall of the upper connecting shaft.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. The utility model relates to a stable high-flow plunger pump, an inner flange part which is arranged on the inner wall of a cylinder sleeve and is positioned above a rubber outlet in the radial direction is arranged on the inner wall of the cylinder sleeve, an upper metal ring, a lower metal ring and a plurality of first sealing rings and second sealing rings which are arranged between the upper metal ring and the lower metal ring in a staggered way along the vertical direction are sleeved on the outer side of an upper connecting shaft and above the inner flange part, a V-shaped groove which extends along the circumferential direction is formed on the lower surface of each of the upper metal ring, the first sealing rings and the second sealing rings, which faces towards the inner cavity of the cylinder sleeve, the upper end faces of each of the first sealing rings, the second sealing rings and the lower metal ring are V-shaped inclined surfaces which can be matched with the V-shaped groove above the first sealing rings, the inner wall of the upper end of the cylinder sleeve is connected with a compression nut through threads, the lower end face of the compression nut is in compression contact with the upper surface of the upper metal ring, and the lower surface of the lower metal ring is in compression contact with the upper surface of the inner flange part, the upper surface of the compression nut is enabled, the upper sealing ring with the lower surface of the compression nut, which is enabled to continuously output rubber solution with high viscosity from the rubber outlet on the inner cylinder sleeve to the inner cylinder sleeve through the rubber outlet on the basis of the cylinder sleeve inner cylinder sleeve, the rubber outlet in the circumferential direction, the V-shaped groove extends along the circumferential direction, the V-shaped groove is formed, the V-shaped groove can be formed, and the sealing glue groove can be consistently long, and sealing glue sealing performance can be avoided, and the sealing performance can be greatly stable, and can be caused, and long, and sealing performance can be caused.

2. The utility model relates to a stable high-flow plunger pump, the lower end of a cylinder sleeve is connected with a glue passing sleeve in a sealing way, the lower end of the glue passing sleeve with a sealing plate at the upper end is connected with a glue sucking cylinder in a sealing way, the lower end of the glue sucking cylinder is embedded into a glue inlet through hole on a pressure plate, the lower end of an upper linking shaft is connected with a lower linking shaft through a connecting rod, the lower end of the vertically extending lower linking shaft penetrates through the glue passing sleeve and is provided with a scraping spoon, a movable piece capable of moving in the vertical direction is arranged in the glue passing sleeve and below the sealing plate, the lower part of the movable piece which is sleeved on the lower linking shaft in a sealing way can be connected with the upper end of the glue sucking cylinder in a sealing way, a glue inlet chamber is formed among the glue passing sleeve, the glue sucking cylinder and the movable piece, a movable sleeve is sleeved outside the connecting rod, a stop part is arranged above the movable sleeve capable of moving in the vertical direction, the outer surface of the lower part of the movable sleeve is connected with the inner wall of the cylinder sleeve in a sealing way, thereby forming a glue storage chamber between the lower part of the movable sleeve and the sealing plate of the glue passing sleeve, the lower part of the connecting rod is provided with a bulge part which is outwards along the radial direction, the lower end of the movable sleeve can be matched with the upper surface of the bulge part in a sealing way, thereby forming a glue outlet chamber between the movable sleeve and the connecting rod, the glue inlet chamber is communicated with the glue storage chamber through a plurality of glue passing through holes arranged on the sealing plate, the side wall of the upper part of the movable sleeve is provided with a glue outlet hole communicated with the glue outlet chamber, a glue outlet flow passage is arranged between the glue outlet hole and the glue outlet hole on the cylinder sleeve, the glue inlet chamber, the glue storage chamber and the glue outlet chamber are driven to be communicated in a staggered way through the reciprocating movement of an upper and a lower connecting shafts, thereby realizing the continuous outwards supply of glue at a larger flow rate so as to ensure the requirement of the glue consumption on a photovoltaic production line, and also ensure the stability of the glue pressure and the flow rate of output, thereby ensuring the quality of final glue.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a stable high-flow plunger pump of the present utility model;

FIG. 2 is a schematic diagram of a partial structure of a stable high-flow plunger pump of the present utility model;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged schematic view of FIG. 3 at C;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is a schematic illustration of the piston rod extension state of the stabilized high-flow plunger pump of the present utility model;

FIG. 7 is a schematic cross-sectional view taken along line D-D of FIG. 6;

fig. 8 is an enlarged schematic view at E in fig. 7.

In the above figures: 1. a cylinder; 101. a main body portion; 102. a piston rod; 2. cylinder sleeve; 3. a pressure plate; 301. a glue inlet through hole; 4. an upper link shaft; 41. a stop portion; 51. a round nut; 52. a fixing plate; 53. positioning columns; 54. a support plate; 6. a glue outlet; 7. an inner flange portion; 81. a metal ring is arranged on the upper part; 82. a lower metal ring; 83. a first seal ring; 84. a second seal ring; 85. a V-shaped groove; 9. a compression nut; 91. a gap layer; 92. a spacer layer; 93. an extension part; 94. a wrench groove; 10. a sealing gasket; 111. a glue inlet chamber; 112. a glue storage chamber; 113. a glue outlet chamber; 12. a glue outlet flow passage; 13. a retainer ring; 14. a lower nut; 141. a first flange portion; 15. a connecting sleeve; 16. a flange ring; 17. a glue-passing sleeve; 171. a sealing plate; 172. a glue passing through hole; 18. a glue suction cylinder; 181. a second flange portion; 19. a connecting rod; 191. a boss; 20. a lower link shaft; 21. a spatula; 22. a movable member; 23. a movable sleeve; 231. a glue outlet hole; 100. A charging barrel.

Description of the embodiments

The present patent will be further understood by the specific examples given below, which are not intended to be limiting.

Example 1: a stable high flow plunger pump comprising: the cylinder 1 of vertical setting, the cylinder liner 2 that the upper end is connected with the main part 101 of cylinder 1 and set up in the pressure disk 3 under the cylinder liner 2, the upper chain shaft 4 of a vertical extension is installed to the piston rod 102 lower extreme of cylinder 1, and the lower extreme of this upper chain shaft 4 penetrates in the cylinder liner 2 for with the inside wall sealing fit of feed cylinder 100 the center of pressure disk 3 offered with the inner chamber intercommunication of cylinder liner 2 advance the gluey through-hole 301, offered a glue outlet 6 on the lateral wall of cylinder liner 2 upper end, the inner wall of cylinder liner 2 is gone up and be located glue outlet 6 top is provided with a radially inward flange portion 7, the top cover that is located the inner flange portion 7 outside is gone up and is located upper metal washer 81, lower metal washer 82 and a plurality of along the vertical orientation staggered arrangement between upper metal washer 81 and lower metal washer 82, upper metal washer 81, first sealing washer 83, second sealing washer 84 all open a circumference along the direction on the lower surface of cylinder liner 2 inner chamber respectively, the upper surface of sealing washer 84 is the seal washer 85 that the upper surface of a V-shaped groove is gone up and lower metal washer 82 is contacted with the upper end face of the upper end of the compression cap 9, the upper end face of the compression cap 82 is the top of the compression cap 9 and the upper end face of compression cap 82.

The lower end of the cylinder sleeve 2 is connected with a glue passing sleeve 17 in a sealing way, the lower end of the glue passing sleeve 17 with a sealing plate 171 at the upper end is connected with a glue sucking cylinder 18 in a sealing way, the lower end of the glue sucking cylinder 18 is embedded into a glue feeding through hole 301 on the pressure plate 3, the lower end of the upper link shaft 4 is connected with a lower link shaft 20 through a connecting rod 19, and the lower end of the lower link shaft 20 which extends vertically penetrates through the glue passing sleeve 17 and is provided with a glue scraping spoon 21;

The sealing device is characterized in that a movable piece 22 capable of moving in the vertical direction is arranged in the glue passing sleeve 17 and below the sealing plate 171, the lower part of the movable piece 22 is hermetically sleeved on the lower connecting shaft 20 and can be in sealing connection with the upper end of the glue sucking barrel 18, so that a glue inlet chamber 111 is formed among the glue passing sleeve 17, the glue sucking barrel 18 and the movable piece 22, a movable sleeve 23 is sleeved outside the connecting rod 19, a stop part 41 is arranged above the movable sleeve 23 capable of moving in the vertical direction, the outer surface of the lower part of the movable sleeve 23 is hermetically connected with the inner wall of the cylinder sleeve 2, a glue storage chamber 112 is formed between the lower part of the movable sleeve 23 and the sealing plate 171 of the glue passing sleeve 17, a radially outward protruding part 191 is arranged at the lower part of the connecting rod 19, the lower end of the movable sleeve 23 can be in sealing fit with the upper surface of the protruding part 191, so that a glue outlet chamber 113 is formed between the movable sleeve 23 and the connecting rod 19, a stop part 41 is arranged above the movable sleeve 23 capable of moving in the vertical direction, the lower surface of the movable sleeve 23 is hermetically connected with the inner wall of the cylinder sleeve 2, a glue outlet channel 231 is formed between the glue inlet chamber 111 and the glue storage chamber 112 through a plurality of glue outlet holes 231 formed between the movable sleeve 23 and the upper side wall of the movable sleeve 23 and the glue outlet chamber 231 and the glue outlet hole 12.

The stopper 41 is provided at the lower portion of the upper link shaft 4.

A lower screw cap 14 is connected to the outer wall of the lower end of the cylinder sleeve 2 through threads, and the lower screw cap 14 is sleeved on the outer side of the glue passing sleeve 17 and is in sealing connection with the outer wall of the glue passing sleeve 17.

The inner walls of the upper and lower metal rings 81 and 82 are in clearance fit with the outer wall of the upper link shaft 4.

The inner walls of the first seal ring 83 and the second seal ring 84 are in interference fit with the outer wall of the upper link shaft 4.

The upper surface of the upper protruding portion 191 of the connecting rod 19 is a conical surface with an open lower end, and an inner chamfer surface capable of being attached to the conical surface is arranged at the lower end of the movable sleeve 23.

A retainer ring 13 is arranged between the glue passing sleeve 17 and the glue absorbing cylinder 18, the upper surface of the retainer ring 13 is in sealing connection with the lower end surface of the glue passing sleeve 17 through an O-shaped ring, the lower surface of the retainer ring is in sealing connection with the upper end surface of the glue absorbing cylinder 18 through an O-shaped ring, an inner chamfer is arranged at the upper end of the retainer ring 13, and the inner chamfer surface is in sealing contact with the movable part 22.

The inner wall of the lower end of the lower nut 14 is provided with a first flange part 141 which is inward along the radial direction, the outer wall of the upper end of the rubber suction barrel 18 is provided with a second flange part 181 which is outward along the radial direction, the lower surface of the second flange part 181 is in lap contact with the upper surface of the first flange part 141, and the outer surface of the second flange part 181 is in sealing connection with the inner wall of the lower nut 14.

A connecting sleeve 15 is arranged between the lower nut 14 and the pressure plate 3 and positioned outside the rubber suction barrel 18, the lower end of the connecting sleeve 15 is embedded into a flange ring 16 and is in sealing connection with the inner wall of the flange ring 16, the flange ring 16 is connected with the upper surface of the pressure plate 3 through bolts, and the inner wall of the connecting sleeve 15 is in sealing connection with the outer wall of the rubber suction barrel 18.

A gasket 10 is provided between the flange ring 16 and the upper surface of the platen 3.

Example 2: a stable high flow plunger pump comprising: the cylinder 1 of vertical setting, the cylinder liner 2 that the upper end is connected with the main part 101 of cylinder 1 and set up in the pressure disk 3 under the cylinder liner 2, the upper chain shaft 4 of a vertical extension is installed to the piston rod 102 lower extreme of cylinder 1, and the lower extreme of this upper chain shaft 4 penetrates in the cylinder liner 2 for with the inside wall sealing fit of feed cylinder 100 the center of pressure disk 3 offered with the inner chamber intercommunication of cylinder liner 2 advance the gluey through-hole 301, offered a glue outlet 6 on the lateral wall of cylinder liner 2 upper end, the inner wall of cylinder liner 2 is gone up and be located glue outlet 6 top is provided with a radially inward flange portion 7, the top cover that is located the inner flange portion 7 outside is gone up and is located upper metal washer 81, lower metal washer 82 and a plurality of along the vertical orientation staggered arrangement between upper metal washer 81 and lower metal washer 82, upper metal washer 81, first sealing washer 83, second sealing washer 84 all open a circumference along the direction on the lower surface of cylinder liner 2 inner chamber respectively, the upper surface of sealing washer 84 is the seal washer 85 that the upper surface of a V-shaped groove is gone up and lower metal washer 82 is contacted with the upper end face of the upper end of the compression cap 9, the upper end face of the compression cap 82 is the top of the compression cap 9 and the upper end face of compression cap 82.

The inner wall of the first sealing ring 83 is in interference fit with the outer wall of the upper link shaft 4.

The first sealing ring 83 is a UPE sealing ring, the second sealing ring 84 is a polytetrafluoroethylene sealing ring, and the upper metal ring 81 and the lower metal ring 82 are stainless steel rings.

A gap layer 91 is formed between the inner wall of the lower end of the compression nut 9 and the outer wall of the upper link shaft 4, a spacer layer 92 communicated with the gap layer 91 is formed between the inner wall of the upper end of the compression nut 9 and the outer wall of the upper link shaft 4, and grease is filled in the spacer layer 92.

The compression nut 9 is provided with an extension portion 93 extending upwards from the upper end face of the cylinder sleeve 2, and a plurality of wrench grooves 94 are arranged on the outer wall of the extension portion 93 at intervals along the circumferential direction.

The outside of cylinder liner 2 upper end cover is equipped with a round nut 51, with cylinder liner 2 threaded connection's round nut 51 below and be located cylinder liner 2 outside cover and be equipped with a fixed plate 52, round nut 51's lower surface and the upper surface overlap joint of this fixed plate 52, fixed plate 52 is connected with the backup pad 54 of installing in cylinder 1 main part 101 lower surface through two at least locating columns 53 of vertical setting.

The glue outlet 6 is located below the fixing plate 52.

The upper portion of the glue inlet through hole 301 is cylindrical, and the lower portion is flared and opened outwards.

The working principle of the utility model is as follows: when large-size parts such as a photovoltaic module are subjected to glue spraying operation, glue is generally supplied in a pressure plate mode because the amount of the needed glue is large and the requirement on the viscosity of the glue is higher, however, the glue pressure in a glue outlet flow channel is always in a high value because the viscosity of the glue and the glue outlet flow are large, and sealing failure is easy to cause;

According to the application, the sealing assembly is improved, when the sealing assembly is assembled, the lower metal ring is sleeved on the upper connecting shaft, the lower surface of the lower metal ring is overlapped with the upper end face of the inner flange part, then a plurality of first sealing rings and second sealing rings are sequentially and alternately sleeved on the upper connecting shaft, the openings of V-shaped grooves on the upper sealing rings face downwards to the area where rubber pressure is generated, finally the upper metal ring is sleeved, the V-shaped grooves on each ring body which are sequentially overlapped are matched with the V-shaped protrusions on the adjacent ring body, the stability and the integrity of the integral structure are improved, the compression nut is screwed into the cylinder sleeve, so that the lower end of the compression nut faces the upper metal ring, the first sealing rings and the second sealing rings with the V-shaped grooves are radially outwards expanded after being extruded, and are tightly contacted with the upper connecting shaft, so that sealing is realized, and the combination of the first sealing rings and the second sealing rings which are alternately arranged with the upper metal ring and the lower metal ring can not only improve the stability of the integral structure, but also can improve the sealing performance and the wear resistance of the sealing ring and bear high rubber pressure for a long time and keep good sealing performance, and the service life of the sealing ring is prolonged;

When the device is used, the outer wall and the inner side wall of the charging barrel are in sealing fit with the pressure plate to be pushed below the liquid level in the charging barrel, so that the glue inlet through holes on the pressure plate are filled with glue solution;

the piston rod of the air cylinder drives the upper link shaft, the connecting rod and the lower link shaft which are coaxially arranged to reciprocate in the vertical direction at a higher frequency;

When the piston rod of the air cylinder is in an extension state, the spatula at the lower end of the lower connecting shaft is positioned below the liquid level of the glue in the glue inlet through hole, in the process that the spatula moves upwards along with the lower connecting shaft, the movable part is pushed to move upwards along with the glue upwards by the spatula to cause the sealing failure between the movable part and the glue suction cylinder, the glue enters the glue inlet chamber area from the gap between the movable part and the glue suction cylinder and then enters the glue storage chamber through the glue through hole, and in the process, the movable sleeve moves upwards under the action of the protruding part on the connecting rod and keeps sealing between the movable sleeve and the protruding part, and the volume of the glue storage chamber is gradually increased until the piston rod of the air cylinder is switched to a shrinking state;

When the piston rod of the air cylinder is converted from a contracted state to an extended state, the movable sleeve firstly moves downwards along with the upper connecting shaft and the connecting rod to reduce the volume of the glue storage chamber, the glue solution in the glue storage chamber is extruded and then exerts upward reaction force on the movable sleeve to enable the movable sleeve to move upwards to cause sealing failure between the movable sleeve and the upper protruding part of the connecting rod, and the glue solution enters a glue outlet chamber area from a gap between the movable sleeve and the protruding part and then passes through a glue outlet hole and a glue outlet flow channel and then is output outwards from a glue outlet on the cylinder sleeve.

By adopting the stable high-flow plunger pump, on the basis of realizing continuous output of glue solution with higher viscosity from the inside of the cylinder body to the outside through the glue outlet on the cylinder sleeve through the pressure plate, the stability of sealing at the upper end of the glue outlet can be always maintained in the long-time reciprocating movement process of the upper connecting shaft, and the conditions of unstable sealing performance and greatly shortened sealing service life caused by high glue pressure of the inner cavity of the cylinder sleeve due to high glue solution viscosity are avoided;

In addition, through the reciprocating movement of the upper and lower connecting shafts, the staggered communication among the glue inlet chamber, the glue storage chamber and the glue outlet chamber is driven, so that the glue is continuously and outwards supplied at a large flow, the requirement of the photovoltaic production line on the glue dosage is met, the stability of the output glue pressure and the flow can be ensured, and the quality of final glue is ensured.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A stable high flow plunger pump comprising: cylinder (1), upper end that vertical setting is connected with main part (101) of cylinder (1) cylinder liner (2) and set up pressure disk (3) under cylinder liner (2), upper link axle (4) of a vertical extension are installed to piston rod (102) lower extreme of cylinder (1), and in the lower extreme of this upper link axle (4) penetrated cylinder liner (2), be used for with the inside wall sealing fit of feed cylinder (100) pressure disk (3) the central authorities seted up with advance gluey through-hole (301) of the inner chamber intercommunication of cylinder liner (2), its characterized in that: the novel sealing device is characterized in that a glue outlet (6) is formed in the side wall of the upper end of the cylinder sleeve (2), a radial inward inner flange part (7) is arranged on the inner wall of the cylinder sleeve (2) and located above the glue outlet (6), an upper metal ring (81), a lower metal ring (82) and a plurality of first sealing rings (83) and second sealing rings (84) which are distributed between the upper metal ring (81) and the lower metal ring (82) in a staggered mode along the vertical direction are sleeved on the outer side of the upper connecting shaft (4) and located above the inner flange part (7), a V-shaped groove (85) extending along the circumferential direction is formed in the lower surface of the inner cavity of the cylinder sleeve (2) respectively, the upper end faces of the first sealing ring (83), the second sealing ring (84) and the lower metal ring (82) are V-shaped inclined faces which can be matched with the V-shaped groove (85) above the upper sealing ring, the inner wall of the upper end of the cylinder sleeve (2) is tightly pressed by the upper end face of the upper metal ring (81), and the lower end face of the upper metal ring (82) is tightly pressed by the upper end face of the upper metal ring (9) which is in contact with the lower metal ring (82), and the upper surface of the upper surface (81) is pressed by the upper end face of the upper end of the screw cap (9).

2. The stabilized mass flow plunger pump of claim 1 wherein: the lower end of the cylinder sleeve (2) is connected with a glue passing sleeve (17) in a sealing way, the lower end of the glue passing sleeve (17) with a sealing plate (171) at the upper end is connected with a glue sucking cylinder (18) in a sealing way, the lower end of the glue sucking cylinder (18) is embedded into a glue feeding through hole (301) on the pressure plate (3), the lower end of the upper connecting shaft (4) is connected with a lower connecting shaft (20) through a connecting rod (19), and the lower end of the lower connecting shaft (20) which vertically extends penetrates through the glue passing sleeve (17) and is provided with a glue scraping spoon (21);

A movable piece (22) capable of moving in the vertical direction is arranged in the glue passing sleeve (17) and positioned below the sealing plate (171), the lower part of the movable piece (22) is hermetically sleeved on the lower connecting shaft (20) and can be in sealing connection with the upper end of the glue sucking sleeve (18), so that a glue inlet chamber (111) is formed among the glue passing sleeve (17), the glue sucking sleeve (18) and the movable piece (22), a movable sleeve (23) is sleeved outside the connecting rod (19), a stop part (41) is arranged above the movable sleeve (23) capable of moving in the vertical direction, the outer surface of the lower part of the movable sleeve (23) is hermetically connected with the inner wall of the cylinder sleeve (2), a glue storage chamber (112) is formed between the lower part of the movable sleeve (23) and the sealing plate (171) of the glue passing sleeve (17), the lower part of the connecting rod (19) is provided with a bulge part (191) which is outwards in the radial direction, the lower end of the movable sleeve (23) can be matched with the upper surface of the bulge part (191), so that a plurality of glue inlet chambers (172) are formed between the movable sleeve (23) and the glue storage chamber (112) and the glue passing through the sealing plate (111), a glue outlet hole (231) communicated with the glue outlet chamber (113) is formed in the side wall of the upper part of the movable sleeve (23), and a glue outlet flow passage (12) is formed between the glue outlet hole (231) and a glue outlet (6) in the cylinder sleeve (2).

3. The stabilized mass flow plunger pump of claim 2 wherein: the stop part (41) is arranged at the lower part of the upper link shaft (4).

4. The stabilized mass flow plunger pump of claim 2 wherein: a lower screw cap (14) is connected to the outer wall of the lower end of the cylinder sleeve (2) through threads, and the lower screw cap (14) is sleeved on the outer side of the glue passing sleeve (17) and is connected with the outer wall of the glue passing sleeve (17) in a sealing mode.

5. The stabilized mass flow plunger pump of claim 1 wherein: the inner walls of the upper metal ring (81) and the lower metal ring (82) are in clearance fit with the outer wall of the upper link shaft (4).

6. The stabilized mass flow plunger pump of claim 1 wherein: the inner wall of the first sealing ring (83) and/or the second sealing ring (84) is in interference fit with the outer wall of the upper connecting shaft (4).