CN216173351U

CN216173351U - Diaphragm spraying machine

Info

Publication number: CN216173351U
Application number: CN202122085233.4U
Authority: CN
Inventors: 李淑红; 顾新军
Original assignee: Ningbo Lis Industrial Co ltd
Current assignee: Ningbo Lis Industrial Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-04-05
Anticipated expiration: 2031-08-31

Abstract

The utility model provides a diaphragm spraying machine, which belongs to the technical field of diaphragm pumps and comprises: a feed connection provided with an upper cavity; the pump assembly comprises a diaphragm pump body, a piston, a supporting sheet seat and a diaphragm; the discharge valve is communicated with the upper cavity body and is connected with a discharge joint; the output shaft of the motor is provided with an eccentric wheel, the eccentric wheel is in abutting joint with the piston, and the eccentric wheel can drive the diaphragm through the piston so as to pump the coating input by the feeding joint into the discharging joint through the upper cavity. The utility model has the beneficial effects that: when the diaphragm spraying machine works, the motor drives the eccentric wheel to rotate and drives the piston to do reciprocating linear motion along the diaphragm pump body, hydraulic oil drives the diaphragm to bulge through the supporting sheet seat, so that paint input by the feeding connector is directly pumped into the discharging connector through the upper chamber body, the whole structure is simplified, and higher working efficiency can be guaranteed.

Description

Diaphragm spraying machine

Technical Field

The utility model belongs to the technical field of diaphragm pumps, and relates to a diaphragm spraying machine.

Background

Compared with a plunger type spraying machine, the piston of the diaphragm type spraying machine does not contact with the coating, so that the maintenance rate is reduced, the cost is reduced, and the use is wider. The diaphragm type spraying machine generates driving force by the movement of a piston to drive the diaphragm to move, and the piston is driven to move by the sliding block of the reversing mechanism.

For example, an invention patent of application No. CN201480063488.0 provides a diaphragm pump, wherein a diaphragm pump (1) includes a housing (2), a piston (3), a shaft (4), a roll-up diaphragm (5) configured such that a lid (35) and the piston are integrally reciprocated, a driving device capable of converting a rotational motion of a motor (30) into a linear motion and outputting the linear motion from an output shaft (31) to the shaft, a guide member (7), and a restricting mechanism (8). The guide member is disposed on the other side of the housing in the axial direction of the piston, is attached to the housing, and is capable of guiding the shaft to move in the axial direction. The restricting member is provided between the guide member and the shaft in the housing (2), can allow the shaft to reciprocate in the axial center direction, and can restrict the shaft from rotating around the axial center.

In summary, although some conventional solutions can suppress the decrease in the quantitative property of the liquid transportation amount due to the operation of the rolled diaphragm, the overall structure is complicated, the working efficiency is low, and there is a large space for improvement.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a diaphragm sprayer.

The purpose of the utility model can be realized by the following technical scheme:

a membrane sprayer comprising:

a feed connection provided with an upper cavity; the pump assembly comprises a diaphragm pump body, a piston, a supporting sheet seat and a diaphragm, wherein the diaphragm pump body is provided with a lower cavity, the piston is connected with one end of the lower cavity in a sliding manner, the supporting sheet seat is blocked at the other end of the lower cavity, the feeding joint is connected with the diaphragm pump body, the diaphragm is connected with the supporting sheet seat, and the diaphragm is positioned between the upper cavity and the lower cavity; the discharge valve is communicated with the upper cavity body and is connected with a discharge joint; the output shaft of the motor is provided with an eccentric wheel, the eccentric wheel is in abutting joint with the piston, and the eccentric wheel can drive the diaphragm through the piston so as to pump the coating input by the feeding joint into the discharging joint through the upper cavity.

Preferably, the piston is provided with an oil inlet hole, the oil inlet hole is communicated with the lower cavity, and when the piston reciprocates, a hydraulic medium is sucked into the lower cavity through the oil inlet hole.

Preferably, the oil seal device further comprises an oil cavity, a mounting cavity and a bearing, the motor is arranged in the mounting cavity, the eccentric wheel is arranged in the oil cavity, an oil seal ring is arranged between the oil cavity and the mounting cavity, the bearing is located in the oil cavity, and an output shaft of the motor sequentially penetrates through the oil seal ring and the bearing and is connected with the eccentric wheel.

Preferably, the material return valve further comprises a material return valve, a material discharge channel is arranged between the material discharge connector and the material discharge valve, the material discharge channel is provided with a branch channel, the material return valve is provided with a first valve cavity, a first valve core and a material return channel, the first valve core is arranged in the first valve cavity, the first valve core is in abutting connection with the material return valve and blocks the branch channel, and when the first valve core is separated from the material return valve, the material return channel is communicated with the branch channel through the first valve cavity.

Preferably, the first valve cavity is further provided with a first return spring, and two ends of the first return spring are respectively connected with the material return valve and the first valve core in an abutting mode.

Preferably, the first valve core is provided with a material return control knob, the material return control knob is connected with the material return valve in an abutting mode, and when the material return control knob rotates, the first valve core is driven to move along the axial direction of the first valve core, so that the flow of the material return channel is controlled.

Preferably, the diaphragm pump body is provided with an oil outlet passage and a pressure regulating valve, the oil outlet passage is communicated with the lower cavity, the pressure regulating valve is provided with a second valve cavity, a second valve core and an oil return passage, the second valve core is arranged in the second valve cavity, the second valve core is in abutting connection with the pressure regulating valve and blocks the oil outlet passage, and when the second valve core is separated from the pressure regulating valve, the oil return passage is communicated with the oil outlet passage through the second valve cavity.

Preferably, the second valve chamber still is provided with second reset spring, the air-vent valve still is provided with spring holder and pressure regulating control knob, the both ends of second reset spring respectively with the second case and the spring holder is contradicted and is connected, the spring holder with pressure regulating control knob linkage is connected, works as pressure regulating control knob drives when rotating thereby the spring holder is along self axial displacement control the pressure of cavity down.

Compared with the prior art, the utility model has the beneficial effects that:

1. in the embodiment, when the diaphragm spraying machine works, the motor drives the eccentric wheel to rotate and drives the piston to do reciprocating linear motion along the diaphragm pump body, hydraulic oil drives the diaphragm to bulge through the supporting sheet seat so as to pump the coating input by the feeding joint into the discharging joint through the upper chamber body directly, the whole structure is simplified, and higher working efficiency can be ensured.

2. Discharge joint one end and bleeder valve lug connection to the other end of discharge joint is formed with the connection end, and the coating output in the discharge valve directly through connecting the end is connected to the discharge joint, need not to add the passageway in addition, has overcome the pressure loss's that the long channel structure that adopts arouses problem in the traditional structure, thereby has improved work efficiency.

3. When the push rod is in abutting connection with the valve core, the push rod pushes the valve core to reset through the valve core, so that the feed valve does not need to be disassembled like a traditional mode, and the valve core can reset and recover free movement only by continuously pushing the push rod for two to three times so that the valve core moves back and forth, and the diaphragm spraying machine recovers normal work and is very convenient.

Drawings

Fig. 1 is an internal structural view of a diaphragm coating machine of the present invention.

Fig. 2 is a schematic structural diagram of the material return valve of the present invention.

Fig. 3 is a schematic structural diagram of the material return valve of the present invention.

Fig. 4 is a schematic structural diagram of a pressure regulating valve according to the present invention.

Fig. 5 is a schematic structural view of the diaphragm sprayer of the present invention.

In the figure, 100, the feed connection; 110. an upper cavity; 210. a diaphragm pump body; 211. a lower cavity; 212. an oil outlet channel; 220. a piston; 221. an oil inlet hole; 230. a support base; 240. a membrane; 310. a discharge valve; 300. a discharge joint; 320. a discharge channel; 330. A branch road; 400. a motor; 410. an eccentric wheel; 420. an oil seal ring; 500. an oil chamber; 510. A bearing; 600. a mounting cavity; 700. a material return valve; 710. a first valve chamber; 720. a first valve spool; 730. a feed back channel; 740. a feed back control knob; 750. a first return spring; 800. a pressure regulating valve; 810. a second valve cavity; 812. an oil return passage; 820. a second valve core; 830. a second return spring; 840. a spring seat; 850. and a pressure regulating control knob.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1-5, a membrane sprayer includes:

a feed fitting 100 is provided with an upper cavity 110.

The pump assembly comprises a diaphragm pump body 210, a piston 220, a supporting sheet seat 230 and a diaphragm 240, wherein the diaphragm pump body 210 is provided with a lower cavity 211, the piston 220 is slidably connected with one end of the lower cavity 211, the supporting sheet seat 230 is blocked at the other end of the lower cavity 211, the feeding joint 100 is connected with the diaphragm pump body 210, the diaphragm 240 is connected with the supporting sheet seat 230, and the diaphragm 240 is positioned between the upper cavity 110 and the lower cavity 211.

Wherein, piston 220 is cup structure, and the diaphragm pump body 210 is the column structure, thereby the support piece seat 230 also can be along with the movable block slides and drum membrane 240 when the movable block slides along the pump body, is provided with hydraulic oil in this diaphragm coating machine, and is preferred, still is provided with the filter screen between movable block and support piece seat 230, therefore the dregs of fat in the hydraulic oil can be isolated in the filter screen below, can not glue on membrane 240 or support piece seat 230.

The discharge valve 300 is communicated with the upper cavity 110, the discharge valve 300 is connected with a discharge connector 310, wherein the discharge valve 300 is actually a one-way valve, the discharge valve 300 is provided with a valve cavity and a valve core, the valve core is arranged in the valve cavity, when the coating moves from the inlet to the valve cavity, the valve core cannot block the valve cavity, and when the coating flows reversely, the valve core automatically blocks the valve cavity to prevent the coating from flowing reversely.

An eccentric wheel 410 is arranged on an output shaft of the motor 400, the eccentric wheel 410 is in abutting connection with the piston 220, wherein the eccentric wheel 410 and the piston 220 form a cam mechanism, the driving motor 400 drives the eccentric wheel 410 to rotate and drives the piston 220 to make a reciprocating linear motion along the pump body, and the eccentric wheel 410 can drive the diaphragm 240 through the piston 220 so as to pump the coating input by the feeding joint 100 into the discharging joint 310 through the upper cavity 110.

It should be noted that the output shaft of the motor 400 is directly connected to the eccentric wheel 410, and does not need to be driven by a gear reducer or other speed reducer in a conventional manner, which greatly improves the working efficiency.

In this embodiment, when the membrane spraying machine works, the motor 400 drives the eccentric wheel 410 to rotate, and drives the piston 220 to make reciprocating linear motion along the membrane pump body 210, and hydraulic oil drives the membrane 240 to swell through the supporting seat 230, so that the coating input by the feeding connector 100 is directly pumped into the discharging connector 310 through the upper cavity 110, the whole structure is simplified, and higher working efficiency can be ensured.

Preferably, ejection of compact connects 300 one end and bleeder valve 310 lug connection to the other end of ejection of compact connects 300 is formed with the connection end, and ejection of compact connects 300 and directly exports the coating in the bleeder valve 310 through connecting the end, need not to add the passageway in addition, has overcome the pressure loss's that the long channel structure that adopts arouses problem in the traditional structure, thereby has improved work efficiency.

Preferably, still include the feed valve, feed connector 100 is connected with the feed valve, still includes and promotes seat and push rod, and the promotion seat is connected with feed connector 100, promotes the seat and is provided with the through-hole, and the through-hole communicates with the valve pocket, and the movable through-hole of locating of wearing to promote the case of feed valve moves towards cavity 110.

Therefore, when the push rod is in abutting joint with the valve core of the feeding valve, the push rod pushes the valve core to enable the valve core to reset, the feeding valve does not need to be disassembled like a traditional mode, the push rod is continuously pushed for two to three times, the valve core can move back and forth, the valve core can be reset and can recover free movement, and the diaphragm spraying machine can recover normal work and is very convenient.

As shown in fig. 1 and 4, in the above embodiment, the piston 220 is provided with an oil inlet hole 221, the oil inlet hole 221 communicates with the lower cavity 211, and a hydraulic medium is sucked into the lower cavity 211 through the oil inlet hole 221 when the piston 220 reciprocates.

In this embodiment, the hydraulic medium is hydraulic oil, when the piston 220 moves downward along the diaphragm pump 210, the hydraulic oil is sucked through the oil inlet 221 and pulls the blade holder 230 to move downward, when the piston 220 moves upward along the diaphragm pump 210, the blade holder 230 is pushed by the hydraulic oil to move upward, and the hydraulic oil drives the diaphragm 240 to move through the blade holder 230, so that the paint input by the feeding connector 100 is pumped into the discharging connector 310 through the upper cavity 110.

As shown in fig. 1 and 4, on the basis of the above embodiment, the oil-sealed-type electric power steering device further includes an oil chamber 500, a mounting chamber 600, and a bearing 510, the motor 400 is disposed in the mounting chamber 600, the eccentric wheel 410 is disposed in the oil chamber 500, an oil seal 420 is disposed between the oil chamber 500 and the mounting chamber 600, the bearing 510 is disposed in the oil chamber 500, and an output shaft of the motor 400 sequentially passes through the oil seal 420 and the bearing 510 and is connected to the eccentric wheel 410.

In the embodiment, the positions of the bearing 510 and the oil seal ring 420 are particularly optimized, the bearing 510 is located between the oil seal ring 420 and the eccentric wheel 410, and therefore the bearing 510 is located in hydraulic oil, so that the hydraulic oil can be used as a hydraulic medium to drive the blade holder 230 to move and can also play a role in lubricating the bearing 510, and the oil seal ring 420 can block the hydraulic oil from entering the installation cavity 600 of the motor 400, so as to prevent the motor 400 from being damaged.

As shown in fig. 2 and 3, on the basis of the above embodiment, the present invention further includes a material return valve 700, a material discharge passage 320 is disposed between the material discharge connector 310 and the material discharge valve 300, the material discharge passage is provided with a branch passage 330, the material return valve 700 is provided with a first valve cavity 710, a first valve core 720 and a material return passage 730, the first valve core 720 is disposed in the first valve cavity 710, the first valve core 720 is in abutting connection with the material return valve 700 and blocks the branch passage 330, and the material return passage 730 is communicated with the branch passage 330 through the first valve cavity 710 when the first valve core 720 is separated from the material return valve 700.

The discharge channel 320 is a channel between the discharge joint 310 and the discharge valve 300, and the branch channel 330 is a channel for shunting the discharge channel 320, so that when the pressure of the discharge joint 310 is too high, the first valve core 720 can be separated from the return valve 700, and the excess coating can move from the branch channel 330 toward the return channel 730 through the first valve cavity 710.

In this embodiment, the material returning channel 730 is connected with the material barrel through a pipeline, when the internal pressure of the discharging connector 310 is large, the branch channel 330 can be communicated with the material returning channel 730 by moving the first valve core 720, so that the pressure in the discharging connector 310 and each high-pressure pipeline is removed, the safety of an operator is ensured, and meanwhile, redundant coating can also return to the material barrel through the discharging connector 310, so that the coating can be saved.

As shown in fig. 2, in addition to the above embodiment, the first valve chamber 710 is further provided with a first return spring 750, and two ends of the first return spring 750 are respectively connected to the return valve 700 and the first valve core 720 in an abutting manner.

In the present embodiment, the first return spring 750 is compressed when the first spool 720 is separated from the return valve 700, and the first return spring 750 extends by its own elastic force and pushes the first spool 720 to return when the first spool 720 is released.

As shown in fig. 2 and 3, on the basis of the above embodiments, the first valve core 720 is provided with a material return control knob 740, the material return control knob 740 is connected to the material return valve 700 in an abutting manner, and when the material return control knob 740 rotates, the first valve core 720 is driven to move axially along itself, so as to control the flow rate of the material return channel 730.

In this embodiment, the material return control knob 740 is used to control the opening and closing of the material return valve 700, and when the material return control knob 740 is turned to control the flow rate of the material return passage 730, the excess coating material can move from the branch passage 330 to the material return passage 730 through the first valve chamber 710 when the first valve core 720 is separated from the material return valve 700.

As shown in fig. 4 and 5, in the above embodiment, the diaphragm pump body 210 is provided with an oil outlet passage 212 and a pressure regulating valve 800, the oil outlet passage 212 communicates with the lower cavity 211, the pressure regulating valve 800 is provided with a second valve chamber 810, a second valve body 820 and an oil return passage 812, the second valve body 820 is provided in the second valve chamber 810, the second valve body 820 is in interference connection with the pressure regulating valve 800 to block the oil outlet passage 212, and the oil return passage 812 communicates with the oil outlet passage 212 through the second valve chamber 810 when the second valve body 820 is separated from the pressure regulating valve 800.

In the present embodiment, the pressure regulating valve 800 and the oil return joint are provided, and the hydraulic oil can be returned into the housing from the oil return passage 812 after passing through the oil outlet passage 212 and pushing up the second spool 820.

As shown in fig. 4, in addition to the above embodiments, the second valve chamber 810 is further provided with a second return spring 830, the pressure regulating valve 800 is further provided with a spring seat 840 and a pressure regulating control knob 850, two ends of the second return spring 830 are respectively connected with the second valve spool 820 and the spring seat 840 in an abutting manner, the spring seat 840 is linked with the pressure regulating control knob 850, and when the pressure regulating control knob 850 rotates, the spring seat 840 is driven to move along the axial direction thereof so as to control the pressure of the lower chamber 211.

In this embodiment, the pressure regulating control knob 850 is rotated to drive the spring seat 840 to move axially, when the spring seat 840 is far away from the pressure regulating valve 800, the second return spring 830 is stretched and the elastic force is reduced, at this time, the second valve core 820 can be pushed open easily by hydraulic oil, and the pressure of the lower cavity 211 is reduced; when the spring seat 840 approaches the pressure regulating valve 800, the second return spring 830 is compressed and the elastic force becomes large, and at this time, it is difficult for the hydraulic oil to push the second spool 820 open, and the pressure of the lower chamber 211 becomes large.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A membrane sprayer, comprising:

a feed connection provided with an upper cavity;

the pump assembly comprises a diaphragm pump body, a piston, a supporting sheet seat and a diaphragm, wherein the diaphragm pump body is provided with a lower cavity, the piston is connected with one end of the lower cavity in a sliding manner, the supporting sheet seat is blocked at the other end of the lower cavity, the feeding joint is connected with the diaphragm pump body, the diaphragm is connected with the supporting sheet seat, and the diaphragm is positioned between the upper cavity and the lower cavity;

the discharge valve is communicated with the upper cavity body and is connected with a discharge joint;

the output shaft of the motor is provided with an eccentric wheel, the eccentric wheel is in abutting joint with the piston, and the eccentric wheel can drive the diaphragm through the piston so as to pump the coating input by the feeding joint into the discharging joint through the upper cavity.

2. A membrane sprayer according to claim 1, characterized in that: the piston is provided with an oil inlet hole, the oil inlet hole is communicated with the lower cavity, and when the piston reciprocates, a hydraulic medium is sucked into the lower cavity through the oil inlet hole.

3. A membrane sprayer according to claim 2, characterized in that: the motor is arranged in the installation cavity, the eccentric wheel is arranged in the oil cavity, an oil seal ring is arranged between the oil cavity and the installation cavity, the bearing is positioned in the oil cavity, and an output shaft of the motor sequentially penetrates through the oil seal ring and the bearing and is connected with the eccentric wheel.

4. A membrane sprayer according to claim 1, characterized in that: still include the feed back valve, the discharging joint with be provided with discharging channel between the bleeder valve, discharging channel is provided with the branch way, the feed back valve is provided with first valve pocket, first case and feed back passageway, first case set up in first valve pocket, first case with the bleeder valve is contradicted and is connected and the shutoff is blocked branch way, works as first case with when the feed back valve separates the feed back passageway pass through first valve pocket with branch way intercommunication.

5. A membrane sprayer according to claim 4, characterized in that: the first valve cavity is further provided with a first return spring, and two ends of the first return spring are respectively connected with the material return valve and the first valve core in an abutting mode.

6. A membrane sprayer according to claim 5, characterized in that: the first valve core is provided with a material return control knob, the material return control knob is in abutting connection with the material return valve, and when the material return control knob rotates, the first valve core is driven to move along the axial direction of the first valve core, so that the flow of the material return channel is controlled.

7. A membrane sprayer according to claim 1, characterized in that: the diaphragm pump body is provided with oil outlet channel and air-vent valve, oil outlet channel with cavity intercommunication down, the air-vent valve is provided with second valve chamber, second case and oil return passageway, the second case set up in the second valve chamber, the second case with the air-vent valve is contradicted to be connected and is blocked up oil outlet channel, works as the second case with when the air-vent valve separates oil return passageway passes through the second valve chamber with oil outlet channel intercommunication.

8. A membrane sprayer according to claim 7, characterized in that: the second valve pocket still is provided with second reset spring, the air-vent valve still is provided with spring holder and pressure regulating control knob, the both ends of second reset spring respectively with the second case and the spring holder is contradicted and is connected, the spring holder with pressure regulating control knob linkage is connected, works as drive when pressure regulating control knob rotates thereby the spring holder is along self axial displacement control the pressure of cavity down.