Piston pump module for outputting hot melt adhesive at constant pressure

Abstract

The utility model relates to the technical field of hot melt adhesive conveying and control equipment, in particular to a piston pump module for outputting hot melt adhesive at constant pressure. Comprising a glue path plate seat, a piston pump body is installed on the top of the glue path plate seat, a pump body air source inlet is formed in one side of the piston pump body, an air pump linkage pressure release valve is arranged on one side of the glue path plate seat and connected with the pump body air source inlet through a pipeline, and a pump body flow channel one-way check valve is arranged on the outer side of the glue path plate seat. A glue inlet and a plurality of glue outlets are formed in the glue path plate seat. By adopting a combined structure of the pressure storage cavity in the form of an air compressible principle and the one-way check valve in the glue outlet pipeline of the pump body, the problem of pressure fluctuation of the existing piston pump is effectively solved, hot melt glue can be conveyed more stably and efficiently, the requirement on process stability in modern industrial production is met, and the production cost is reduced. And meanwhile, the purposes of prolonging the service life of equipment and improving the production efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot melt adhesive conveying and control equipment technical field especially relates to a constant pressure output piston pump module for hot melt adhesive. BACKGROUND

[0002] Hot melt adhesive is a kind of adhesive material widely used in various industries, especially packaging, clothing and shoemaking fields. The application of hot melt adhesive requires a specific hot melt adhesive pump system to ensure its uniform and stable pressure output, so as to be effectively applied in the work area. At present, piston pump technology is commonly used in the market to realize the transportation of hot melt adhesive.

[0003] However, during the operation of the piston pump, pressure fluctuations often occur due to the reciprocating motion of the piston. These problems are mainly manifested in the actual application as follows: in each pumping cycle, the movement of the piston will cause uneven pressure in the pump cavity, especially when the piston switches, the pressure fluctuation is more obvious, which directly affects the stability and reliability of hot melt adhesive application; due to the existence of pressure fluctuation, the pumping device is easily affected by repeated pressure changes, thereby accelerating the wear of the internal parts of the pump body and reducing the service life of the equipment; pressure fluctuation will make the hot melt adhesive applied to the target area unstable, thereby affecting the bonding effect and leading to the decline of product quality; at the same time, it will also affect the operation efficiency of the whole production line, and the workers may need to stop and check and maintain the pump equipment, which increases unnecessary work burden. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a piston pump module that can eliminate pressure fluctuation and realize constant-pressure stable output of hot melt adhesive, by adopting the combination structure of air compressible principle pressure storage cavity and one-way check valve in pump body glue outlet pipeline, effectively solve the problem of pressure fluctuation existing in the prior art piston pump, can more stably and efficiently transport hot melt adhesive, meet the requirement of process stability in modern industrial production, also reach the purpose of prolonging the service life of equipment and improving production efficiency.

[0005] The utility model employs the technical scheme as follows: a piston pump module for constant-pressure output of hot melt adhesive, comprising a glue path base, a piston pump main body is installed at the top of the glue path base, a pump body air source inlet is arranged on one side of the piston pump main body, a gas pump linkage pressure relief valve is arranged on one side of the glue path base and connected with the pump body air source inlet through pipeline, a pump body flow channel one-way check valve is arranged on the outside of the glue path base, and a glue inlet and a plurality of glue outlets are arranged on the glue path base.

[0006] As a further improvement of the utility model, a pressure storage cavity and a filter screen cavity are arranged in the glue path base, the pressure storage cavity and the filter screen cavity are communicated, and the pump body glue outlet pipe is connected between the piston pump main body and the pressure storage cavity.

[0007] As a further improvement of the utility model, the glue road board seat is provided with a filter screen group on the side away from the air pump linkage pressure relief valve, and the filter screen group is located inside the filter screen type cavity.

[0008] As a further improvement of the utility model, the piston pump main body comprises a high-temperature-resistant cylinder and a glue suction cylinder body, a pump body sealing seat is fixedly arranged at the top end of the glue suction cylinder body, the high-temperature-resistant cylinder is fixedly connected with the pump body sealing seat through a plurality of cylinder struts, a change-over valve seat is arranged on one side of the high-temperature-resistant cylinder, and a power source-air source input port is arranged on the change-over valve seat, the high-temperature-resistant cylinder is connected with the glue suction cylinder body through a pump body piston rod shaft, one side of the high-temperature-resistant cylinder and the pump body sealing seat is connected with a change-over valve lever sliding groove seat through a change-over valve lever, a change-over valve lever connected with the pump body piston rod shaft is slidably connected to the change-over valve lever sliding groove seat, a cylinder body hot melt adhesive inlet is arranged at the bottom end of the glue suction cylinder body, and a cylinder body hot melt adhesive outlet is arranged at the upper portion of the glue suction cylinder body.

[0009] As a further improvement of the utility model, the change-over valve seat is internally provided with a change-over valve spool and a change-over valve sleeve arranged outside the change-over valve spool, a change-over valve spool connecting rod is connected to the bottom end of the change-over valve spool, a lever magnet seat is arranged inside the change-over valve seat and arranged outside the change-over valve spool connecting rod, an upper magnet seat is arranged at the upper portion of the change-over valve spool connecting rod and arranged inside the change-over valve seat, a lower magnet seat is arranged at the lower portion of the change-over valve spool connecting rod and arranged inside the change-over valve seat, a change-over valve air source input port is arranged on the change-over valve sleeve, a change-over valve forward air source output port and a change-over valve forward air source exhaust port are arranged above the change-over valve air source input port on the change-over valve sleeve, and a change-over valve reverse air source output port and a change-over valve reverse air source exhaust port are arranged below the change-over valve air source input port on the change-over valve sleeve.

[0010] As a further improvement of the utility model, the glue suction cylinder body is internally provided with an upper hot melt glue cylinder inner cavity and a lower hot melt glue cylinder inner cavity, a piston rod check valve steel ball is arranged at the upper hot melt glue cylinder inner cavity inside the glue suction cylinder body, a piston rod check valve steel ball positioning pin is arranged at the top portion of the piston rod check valve steel ball and extends into the inside of the pump body piston rod shaft, and a glue inlet check valve steel ball is arranged at the lower hot melt glue cylinder inner cavity inside the glue suction cylinder body.

[0011] The utility model discloses the beneficial effect is: (1) constant pressure stable output: utilize the pressure storage type cavity as the buffer system, can absorb and equalize pressure fluctuation when the piston pump switches the action, make hot melt glue liquid can with constant pressure output, improve the stability and reliability of the application of glue, thereby reached better bonding effect.

[0012] (2) prolong the service life of equipment: because eliminate pressure fluctuation, reduce the impact of the repeated pressure change that the pump body internal parts receive, reduce the risk of mechanical wear and tear, thereby can prolong the service life of the whole pump system, reduce the replacement and maintenance cost.

[0013] (3) Improve production efficiency: constant pressure output of hot melt adhesive avoids the stop and maintenance caused by unstable pressure, so that the whole production line can run more efficiently and smoothly, thereby directly improving the production efficiency and reducing the work burden.

[0014] (4) Improve product quality: stable hot melt adhesive output can ensure reliable bonding effect, eliminate uneven glue application and product quality decline caused by pressure fluctuation, and help customers produce high-quality products. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a whole structure schematic view of a piston pump module for constant pressure output of hot melt adhesive of the utility model;

[0016] Figure 2 is a Figure 1 another view schematic view of the utility model;

[0017] Figure 3 is an internal analysis view of the glue way board seat of the utility model piston pump module for constant pressure output of hot melt adhesive;

[0018] Figure 4 is a piston pump main body structure schematic view of the utility model piston pump module for constant pressure output of hot melt adhesive;

[0019] Figure 5 is a piston pump main body front view of the utility model piston pump module for constant pressure output of hot melt adhesive;

[0020] Figure 6 is an internal analysis view of the conversion valve seat of the utility model piston pump module for constant pressure output of hot melt adhesive;

[0021] Figure 7 is an internal analysis view of the glue suction cylinder body of the utility model piston pump module for constant pressure output of hot melt adhesive.

[0022] As shown in the figure: 1, piston pump main body; 2, pump body gas source inlet; 3, gas pump linkage pressure relief valve; 4, pump body flow passage one-way check valve; 5, glue way board seat; 6, glue outlet; 7, filter screen group; 8, pump body glue outlet pipe; 9, pressure storage cavity; 10, filter screen cavity; 11, glue inlet;

[0023] 41, high temperature cylinder; 42, cylinder support; 43, pump body sealing seat; 44, glue suction cylinder body; 45, conversion valve seat; 46, conversion valve lever sliding groove seat; 47, conversion valve lever; 48, pump body piston rod shaft; 49, power source-gas source input; 50, cylinder body hot melt adhesive inlet; 51, cylinder body hot melt adhesive outlet;

[0024] 20, switching valve sleeve; 21, switching valve spool; 22, switching valve spool connecting rod; 23, switching valve gas source input port; 24, switching valve positive gas source output port; 25, switching valve positive gas source exhaust port; 26, switching valve reverse gas source output port; 27, switching valve reverse gas source exhaust port; 28, upper magnet seat; 29, dial lever magnet seat; 30, lower magnet seat;

[0025] 31, glue inlet check valve steel ball; 32, piston rod check valve steel ball; 33, piston rod check valve steel ball positioning pin; 34, upper glue melting cylinder inner cavity; 35, lower glue melting cylinder inner cavity. DETAILED DESCRIPTION

[0026] In this specification, the terms "upper", "lower", "left", "right", "front", "back", "front side", "back side", "top", "bottom" and the like are defined with respect to the configuration as shown in the drawings, and are relative concepts. Therefore, it is possible to change accordingly according to different positions, different use states, and therefore these or other orientation terms should not be interpreted as limiting terms.

[0027] As used in this specification and claims, the terms "for example," "for instance," "such as," and "like," and the terms "including" and / or "comprising" and / or "containing" and / or "having" and / or "involving" and / or "featuring" and / or "specifying" and / or words of similar meaning are used to indicate one or more of the listed items can be present and / or one or more of the listed items is possible. For example, if a process is said to "include" a step, that means that the process can or can not include the step, but it can also include other steps not listed, and / or it can include the listed step in a different sequence.

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0029] The utility model provides a kind of piston pump module for constant pressure output hot melt adhesive as shown in the drawings Figures 1-7 The utility model provides a kind of piston pump module for constant pressure output hot melt adhesive as shown in the drawings including glue road base 5, glue road base 5 top is equipped with piston pump main body 1, piston pump main body 1 side is equipped with pump body gas source inlet 2, glue road base 5 side is equipped with air pump linkage pressure relief valve 3 and air pump linkage pressure relief valve 3 is connected with pump body gas source inlet 2 by pipeline, glue road base 5 outside is equipped with pump body flow passage check valve 4, glue road base 5 is equipped with glue inlet 11 and multiple glue outlet 6, glue road base 5 is equipped with storage pressure cavity 9 and filter screen cavity 10, storage pressure cavity 9 and filter screen cavity 10 are communicated, piston pump main body 1 and storage pressure cavity 9 are equipped with pump body glue pipe 8 intercommunication, glue road base is equipped with filter screen group 7 with filter screen group 7 being located in filter screen cavity 10 inside with pump linkage pressure relief valve 3 side away from.

[0030] As shown in the drawings Figure 4 And Figure 5As shown in the utility model, the piston pump main body 1 includes a high-temperature-resistant cylinder 41 and a glue suction cylinder body 44, the top end of the glue suction cylinder body 44 is fixedly provided with a pump body sealing seat 43, the high-temperature-resistant cylinder 41 is fixedly connected with the pump body sealing seat 43 through a plurality of cylinder struts 42, one side of the high-temperature-resistant cylinder 41 is provided with a conversion valve seat 45, the conversion valve seat 45 is provided with a power source-gas source input port 49, the high-temperature-resistant cylinder 41 is connected with the glue suction cylinder body 44 through a pump body piston rod shaft 48, one side of the high-temperature-resistant cylinder 41 is connected with the pump body sealing seat 43 through a conversion valve lever sliding groove seat 46, the conversion valve lever sliding groove seat 46 is slidably connected with a conversion valve lever 47 connected with the pump body piston rod shaft 48, the bottom end of the glue suction cylinder body 44 is provided with a cylinder hot melt glue inlet 50, and the upper portion of the glue suction cylinder body 44 is provided with a cylinder hot melt glue outlet 51.

[0031] As shown in the utility model, Figure 6 As shown in the utility model, the conversion valve seat 45 is internally provided with a conversion valve spool 21 and a conversion valve sleeve 20 sleeved outside the conversion valve spool 21, the bottom end of the conversion valve spool 21 is connected with a conversion valve spool connecting rod 22, the conversion valve seat 45 is internally provided with a lever magnet seat 29 sleeved outside the conversion valve spool connecting rod 22, the upper portion of the conversion valve spool connecting rod 22 is provided with an upper magnet seat 28 installed in the inside of the conversion valve seat 45, the lower portion of the conversion valve spool connecting rod 22 is provided with a lower magnet seat 30 installed in the inside of the conversion valve seat 45, the conversion valve sleeve 20 is provided with a conversion valve gas source input port 23, the conversion valve sleeve 20 is provided with a conversion valve forward gas source output port 24 and a conversion valve forward gas source exhaust port 25 above the conversion valve gas source input port 23, and the conversion valve sleeve 20 is provided with a conversion valve reverse gas source output port 26 and a conversion valve reverse gas source exhaust port 27 below the conversion valve gas source input port 23.

[0032] As shown in the utility model, Figure 7 As shown in the utility model, the inside of the glue suction cylinder body 44 is provided with an upper hot melt glue cylinder inner cavity 34 and a lower hot melt glue cylinder inner cavity 35, the inside of the glue suction cylinder body 44 is provided with a piston rod one-way valve steel ball 32 at the position of the upper hot melt glue cylinder inner cavity 34, the top of the piston rod one-way valve steel ball 32 is provided with a piston rod one-way valve steel ball positioning pin 33 extending into the inside of the pump body piston rod shaft 48, and the inside of the glue suction cylinder body 44 is provided with a glue inlet one-way valve steel ball 31 at the position of the lower hot melt glue cylinder inner cavity 35.

[0033] The utility model discloses in the specific implementation, power gas source from pump body gas source entrance 2 enters, drive piston pump main part 1 work, simultaneously through the connection air pump linkage pressure relief valve 3 makes it close, cut off the glue solution reflux channel. Piston pump main part 1 work, glue solution enters from the glue inlet 11 from pump body glue outlet pipe 8 through pump body flow passage check valve 4 into the storage pressure cavity 9, after entering filter screen cavity 10 through storage pressure cavity 9 pressurization, after filtering from the glue outlet 6 from the glue outlet 6 flow out. When power gas source from pump body gas source entrance 2 cut off, air pump linkage pressure relief valve 3 has no gas source pressurization under the condition, the spring in air pump linkage pressure relief valve 3 promotes the valve and makes it open, the pressure of whole glue road plate seat 5 from air pump linkage pressure relief valve 3 returns to the glue inlet 11, makes piston pump main part 1 under the condition of closing, whole module is in the safe state of no pressure.

[0034] The working principle of piston pump main body 1: gas source from power source-gas source input port 49 input, enter conversion valve gas source input port 23, through conversion valve positive gas source output port 24 into high temperature resistant air cylinder 41 positive air chamber, the cylinder acts upward and does work, drives pump body piston rod shaft 48 to act upward, at this time piston rod one-way valve steel ball 32 closes, and glue inlet one-way valve steel ball 31 opens, pump body piston rod shaft 48 acts upward, compresses the upper hot melt glue cylinder inner chamber 34 and makes glue solution discharge from cylinder hot melt glue outlet 51, simultaneously, glue solution enters lower hot melt glue cylinder inner chamber 35 from cylinder hot melt glue inlet 50, when pump body piston rod shaft 48 drives push rod magnet seat 29 to approach upper magnet seat 28 all the time, utilize the principle that same pole repels each other of magnet, promote upper magnet seat 28 to drive conversion valve spool 21 to act upward, when conversion valve spool 21 acts upward, the gas from conversion valve gas source input port 23 is switched to conversion valve reverse gas source output port 26 and enters high temperature resistant air cylinder 41 reverse air chamber, the cylinder acts downward and does work, drives pump body piston rod shaft 48 to act downward, at this time glue inlet one-way valve steel ball 31 closes, and piston rod one-way valve steel ball 32 opens, because pump body piston rod shaft 48 acts in suction cylinder cavity, expels glue solution from lower hot melt glue cylinder inner chamber 35 to upper hot melt glue cylinder inner chamber 34, and then discharges from cylinder hot melt glue outlet 51, pump body piston rod shaft 48 acts up and down and drives the switching of conversion valve, so that the cylinder circulates and drives pump body piston rod shaft 48 to circulate and do work, achieve the purpose of circulating output of glue solution.

[0035] The above implementation manners are only used to illustrate the technical scheme of the utility model, rather than limit it; although the utility model has been explained in detail with reference to the foregoing implementation manners, those skilled in the art should understand that: it still can modify the technical scheme recorded in the foregoing implementation manners, or make equivalent replacement to part of technical features; and these modifications or replacements do not make the essence of corresponding technical scheme deviate from the spirit and scope of the technical scheme of the utility model implementation manner.

Claims

1. A constant pressure output piston pump module for hot melt adhesives, comprising an adhesive way board seat (5), characterized in that: The piston pump body (1) is arranged on the top of the glue path plate seat (5), one side of the piston pump body (1) is provided with a pump body air source inlet (2), one side of the glue path plate seat (5) is provided with a gas pump linkage pressure relief valve (3), and the gas pump linkage pressure relief valve (3) is connected with the pump body air source inlet (2) through a pipeline, the outer side of the glue path plate seat (5) is provided with a pump body flow channel one-way check valve (4), and the glue path plate seat (5) is provided with a glue inlet (11) and a plurality of glue outlets (6).

2. The constant pressure output piston pump module for hot melt adhesive according to claim 1, characterized in that: The glue path plate seat (5) is provided with a pressure storage cavity (9) and a filter screen cavity (10), the pressure storage cavity (9) and the filter screen cavity (10) are communicated, and the piston pump body (1) is communicated with the pressure storage cavity (9) through a pump body glue outlet pipe (8).

3. The constant pressure output piston pump module for hot melt adhesive according to claim 2, characterized in that: The glue path plate seat is provided with a filter screen group (7) on the side away from the gas pump linkage pressure relief valve (3), and the filter screen group (7) is located in the filter screen cavity (10).

4. The constant pressure output piston pump module for hot melt adhesive according to claim 1, characterized in that: The piston pump body (1) comprises a high-temperature-resistant cylinder (41) and a glue suction cylinder body (44), a pump body sealing seat (43) is fixedly arranged at the top end of the glue suction cylinder body (44), the high-temperature-resistant cylinder (41) and the pump body sealing seat (43) are fixedly connected through a plurality of cylinder struts (42), one side of the high-temperature-resistant cylinder (41) is provided with a conversion valve seat (45), the conversion valve seat (45) is provided with a power source-air source input port (49), the high-temperature-resistant cylinder (41) and the glue suction cylinder body (44) are connected through a pump body piston rod shaft (48), one side of the high-temperature-resistant cylinder (41) and the pump body sealing seat (43) is connected through a conversion valve lever sliding groove seat (46), the conversion valve lever sliding groove seat (46) is slidably connected with a conversion valve lever (47) connected with the pump body piston rod shaft (48), the bottom end of the glue suction cylinder body (44) is provided with a cylinder hot melt glue inlet (50), and the upper portion of the glue suction cylinder body (44) is provided with a cylinder hot melt glue outlet (51).

5. The constant pressure output piston pump module for hot melt adhesive according to claim 4, characterized in that: The conversion valve seat (45) is internally provided with a conversion valve spool (21) and a conversion valve sleeve (20) arranged outside the conversion valve spool (21), the bottom end of the conversion valve spool (21) is connected with a conversion valve spool connecting rod (22), the conversion valve seat (45) is internally provided with a lever magnet seat (29) arranged outside the conversion valve spool connecting rod (22), the upper portion of the conversion valve spool connecting rod (22) is provided with an upper magnet seat (28) arranged in the conversion valve seat (45), the lower portion of the conversion valve spool connecting rod (22) is provided with a lower magnet seat (30) arranged in the conversion valve seat (45), the conversion valve sleeve (20) is provided with a conversion valve air source input port (23), the conversion valve sleeve (20) is provided with a conversion valve forward air source output port (24) and a conversion valve forward air source exhaust port (25) above the conversion valve air source input port (23), and the conversion valve sleeve (20) is provided with a conversion valve reverse air source output port (26) and a conversion valve reverse air source exhaust port (27) below the conversion valve air source input port (23).

6. The constant pressure output piston pump module for hot melt adhesive according to claim 4, characterized in that: The glue suction cylinder (44) is internally provided with an upper glue melting cylinder inner cavity (34) and a lower glue melting cylinder inner cavity (35), the glue suction cylinder (44) is internally provided with a piston rod one-way valve steel ball (32) at the upper glue melting cylinder inner cavity (34), the piston rod one-way valve steel ball (32) is provided with a piston rod one-way valve steel ball positioning pin (33) extending into the inside of the pump body piston rod shaft (48), the glue suction cylinder (44) is internally provided with a glue inlet one-way valve steel ball (31) at the lower glue melting cylinder inner cavity (35).

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