CN212801913U

CN212801913U - Vacuum pump sewage suction truck capable of preventing sludge from flowing back

Info

Publication number: CN212801913U
Application number: CN202021563800.1U
Authority: CN
Inventors: 祁登军
Original assignee: Guizhou Zhonghai Shijiyu Environmental Protection Engineering Co ltd
Current assignee: Guizhou Zhonghai Shijiyu Environmental Protection Engineering Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-26
Anticipated expiration: 2030-07-31

Abstract

The utility model relates to a special vehicle technical field discloses a vacuum pump soil pick-up car of preventing silt backward flow, it includes the car body, it has the jar body that has the cover of irritating to articulate on the frame of car body, it has a pair of first pneumatic cylinder still to articulate on the frame of car body, the piston rod and the jar body of first pneumatic cylinder are articulated, it has a pair of second pneumatic cylinder to articulate on the lateral wall of the jar body, the piston rod and the cover of irritating of second pneumatic cylinder are articulated, the soil pick-up pipe of the intercommunication jar body is installed at the top of the jar body, soil pick-up pipe's the end of intaking is installed and is stopped the end of returning, the gas vent has been seted up at the top of the jar body, still install the vacuum pump on. The utility model has the advantages that: open the cover through the second pneumatic cylinder and carry out the blowdown, the slope of jar body is flowed out outside the jar along the inclined plane of jar body with the first pneumatic cylinder of rethread, the silt of jar body bottom, has avoided jar body blowdown not thorough.

Description

Vacuum pump sewage suction truck capable of preventing sludge from flowing back

Technical Field

The utility model relates to a special vehicle technical field, especially a vacuum pump soil pick-up car of preventing silt backward flow.

Background

The sewage suction truck can self-suck and self-discharge, realizes the collection and the transfer of sludge, sewage and the like, and the sewage suction device is the core of the sewage suction truck. In the sewage suction truck, most sewage suction devices comprise a sewage tank, a sewage suction pipe connected to the sewage tank, a vacuum pressure system and the like, when sewage is sucked, the sewage suction pipe extends into a sewage pool or an inspection well, the vacuum pressure system acts on the sewage tank to discharge air in the sewage tank, sewage, sludge and the like enter the sewage tank through the sewage suction pipe under the action of atmospheric pressure after the pressure in the sewage tank is reduced to a certain degree, then the sewage truck transports sewage stored in the sewage tank to a discharge place, then the sewage suction pipe is placed into a discharge pool, the vacuum pressure system acts on the sewage tank to enable external air to enter the sewage tank, and the sewage, the sludge and the like in the sewage tank are discharged into the discharge pool through the sewage pipe after the sewage tank obtains a certain positive pressure. The sewage suction truck has the advantages of high working speed, large capacity and convenient transportation, and is suitable for collecting and transporting liquid substances such as excrement, slurry, crude oil and the like. The vacuum pump of the sewage suction truck with advanced domestic technology is adopted, so that the suction force is large, the suction distance is long, and the vacuum pump is particularly suitable for suction, loading, transportation and discharge of sludge in a sewer.

The existing sewage suction truck has some defects in some aspects and needs further improvement, partial sludge is remained in a sewage suction pipe when the existing sewage suction truck sucks sewage, the sludge remained in the sewage suction pipe is often easy to drop to the ground to pollute the environment when the sewage suction pipe is taken out to the ground, a tank body of the sewage suction truck is closed, the sewage discharge is not thorough, and the sludge at the bottom of the tank corrodes the tank body when the tank body is idle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent vacuum pump soil pick-up car of silt backward flow to solve the not thorough problem of current soil pick-up car jar body blowdown.

The purpose of the utility model is realized through the following technical scheme: a vacuum pump sewage suction truck for preventing sludge backflow comprises a truck body, wherein a tank body with a pouring cover is hinged on a truck frame of the truck body, a pair of first hydraulic cylinders is also hinged on the frame of the vehicle body and is respectively positioned at the two sides of the tank body, a piston rod of the first hydraulic cylinder is hinged with the tank body, the irrigation cover is hinged on the tank body, a pair of second hydraulic cylinders are hinged on the side wall of the tank body, the second hydraulic cylinders are respectively positioned on the two sides of the tank body, a piston rod of the second hydraulic cylinder is hinged with the irrigation cover, the top of the tank body is provided with a sewage pumping pipe communicated with the tank body, the sewage pumping device is characterized in that a check head is installed at the water inlet end of the sewage pumping pipe, an exhaust port is formed in the top of the tank body, a vacuum pump is further installed on the frame of the vehicle body, and the air inlet end of the vacuum pump is connected with the exhaust port through a pipeline.

Preferably, the non-return head comprises an outer tube with one end closed and an inner tube with two ends closed, one end of the inner tube is inserted into the closed end of the outer tube, a vacuum chamber is formed between the inner wall of the outer tube and the outer wall of the inner tube, the inner cavity of the inner tube is divided into a mud inlet cavity and a mud outlet cavity by a first partition plate, the mud outlet cavity is divided into a first volume change cavity and a second volume change cavity by an elastic partition plate, a first through hole communicated with the vacuum chamber is formed in the inner wall of the first volume change cavity, a second through hole communicated with the first volume change cavity and the mud inlet cavity is formed in the first partition plate, a third through hole is further formed in the inner wall of the mud inlet cavity, the third through hole is located outside the vacuum chamber, steel balls blocking the second through hole are mounted in the mud inlet cavity, and a spring tightly pressing the steel balls is further mounted in the mud inlet cavity, and an ejector rod is arranged on the elastic partition plate, and one end of the ejector rod, which is far away from the elastic partition plate, abuts against the steel ball.

Preferably, a supporting plate is further arranged in the first volume change cavity, and the ejector rod penetrates through the supporting plate and abuts against the steel ball.

Preferably, both ends of the inner pipe are detachably provided with end covers.

Preferably, the both ends of outer tube are provided with the ring flange respectively, are located the outer tube blind end demountable installation has the filter frame on the ring flange, another the ring flange with the end connection of intaking of taking out the dirty pipe, install the filter screen on the filter frame, the inner tube is located filter frame is interior.

Preferably, the first through holes are a plurality of and are evenly distributed around the axial lead of the inner pipe.

Preferably, the number of the third through holes is a plurality of and is evenly distributed around the axial lead of the inner pipe.

The utility model has the advantages of it is following:

1. open the cover through the second pneumatic cylinder and carry out the blowdown, the slope of jar body is flowed out outside the jar along the inclined plane of jar body with the first pneumatic cylinder of rethread, the silt of jar body bottom, has avoided jar body blowdown not thorough.

2. The negative pressure is formed along with the discharge of air in the vacuum chamber, the air in the first volume change cavity is made to enter the vacuum chamber, the air pressure in the first volume change cavity is smaller than the pressure in the second volume change cavity at the moment, the elastic partition board gradually deforms, so that the volume of the first volume change cavity is reduced, the elastic partition board pushes the ejector rod to push the steel ball away from the second through hole when deforming, the first volume change cavity is communicated with the mud inlet cavity, the air flow of the mud inlet cavity moving towards the first volume change cavity is formed, the sludge outside the inner pipe enters the mud inlet cavity under the action of the atmospheric pressure, when the vacuum chamber stops exhausting, the atmospheric pressure of the first volume cavity is recovered, the spring enables the steel ball to block the second through hole again, the sludge in the sludge pipe is prevented from falling, and meanwhile, the elastic partition board recovers under the action of the ejector rod pushed.

3. The backup pad leads to the ejector pin, avoids ejector pin reciprocating motion to appear the deviation, leads to unable back-open steel ball, causes to prevent silt backward flow and became invalid.

4. The filter screen avoids that massive stones or weed branches and the like block the third through hole, thereby causing that the sludge can not enter the sludge inlet cavity.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a check structure;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

in the figure, 1-outer pipe, 2-inner pipe, 3-vacuum chamber, 4-first partition board, 5-mud inlet chamber, 6-elastic partition board, 7-first volume change chamber, 8-second volume change chamber, 9-first through hole, 10-second through hole, 11-third through hole, 12-steel ball, 13-spring, 14-ejector rod, 15-support plate, 16-end cover, 17-flange plate, 18-filter frame, 19-filter screen, 20-vehicle body, 21-tank body, 22-first hydraulic cylinder, 23-tank cover, 24-second hydraulic cylinder, 25-sewage pumping pipe, 26-vacuum pump and 27-check head.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

As shown in fig. 1-3, a sludge suction truck with a vacuum pump 26 for preventing sludge from flowing back includes a truck body 20, a tank 21 having a cover 23 is hinged to a frame of the truck body 20, a pair of first hydraulic cylinders 22 is hinged to the frame of the truck body 20, the pair of first hydraulic cylinders 22 are respectively located at two sides of the tank 21, piston rods of the first hydraulic cylinders 22 are hinged to the tank 21, the cover 23 is hinged to the tank 21, a pair of second hydraulic cylinders 24 are hinged to a side wall of the tank 21, the second hydraulic cylinders 24 are respectively located at two sides of the tank 21, piston rods of the second hydraulic cylinders 24 are hinged to the cover 23, a sludge suction pipe 25 connected to the tank 21 is installed at the top of the tank 21, a check head 27 is installed at a water inlet end of the sludge suction pipe 25, an air outlet is opened at the top of the tank 21, the truck body 20 is further installed with the vacuum pump 26, preferably, a generator is further installed, the inlet end of the vacuum pump 26 is connected with the exhaust port through a pipeline, the tank cover is opened through the second hydraulic cylinder 24 for pollution discharge, the tank body 21 is inclined through the first hydraulic cylinder 22, and sludge at the bottom of the tank body 21 flows out of the tank body along the inclined plane of the tank body 21, so that incomplete pollution discharge of the tank body 21 is avoided.

In this embodiment, as shown in fig. 1-3, the check head 27 includes an outer tube 1 with a closed end and an inner tube 2 with a closed end, one end of the inner tube 2 is inserted into the closed end of the outer tube 1, a vacuum chamber 3 is formed between the inner wall of the outer tube 1 and the outer wall of the inner tube 2, the inner cavity of the inner tube 2 is divided into a mud inlet cavity 5 and a mud outlet cavity by a first partition plate 4, the mud outlet cavity is divided into a first volume change cavity 7 and a second volume change cavity 8 by an elastic partition plate 6, the elastic partition plate 6 is fixedly disposed in the mud outlet cavity and concaved to the second volume change cavity 8, a first through hole 9 communicated with the vacuum chamber 3 is disposed on the inner wall of the first volume change cavity 7, the first through holes 9 are a plurality of those are uniformly distributed around the axial lead of the inner tube 2, a second through hole 10 communicating the first volume change cavity 7 with the mud inlet cavity 5 is disposed on the first partition plate 4, a third through hole, the third through holes 11 are positioned outside the vacuum chamber 3, the third through holes 11 are a plurality of and are uniformly distributed around the axial lead of the inner pipe 2, steel balls 12 for blocking the second through holes 10 are installed in the mud inlet chamber 5, springs 13 for tightly supporting the steel balls 12 are also installed in the mud inlet chamber 5, an ejector rod 14 is arranged on the elastic partition plate 6, one end of the ejector rod 14, far away from the elastic partition plate 6, is supported on the steel balls 12, negative pressure is formed by exhausting air in the vacuum chamber 3 from the tank body 21 through the vacuum pump, air in the first volume change chamber 7 enters the vacuum chamber 3, the air pressure in the first volume change chamber 7 is smaller than the pressure in the second volume change chamber 8 at the moment, the elastic partition plate 6 gradually deforms so that the volume of the first volume change chamber 7 is reduced, the elastic partition plate 6 pushes the ejector rod 14 to support the steel balls 12 away from the second through holes 10 when deforming, and the first volume change chamber 7 is communicated with the mud inlet chamber 5, and an air flow from the sludge inlet cavity 5 to the first volume change cavity 7 is formed, sludge outside the inner pipe 2 enters the sludge inlet cavity 5 under the action of atmospheric pressure, when the vacuum chamber 3 stops exhausting, the atmospheric pressure is recovered from the first volume cavity, the spring 13 enables the steel balls 12 to block the second through hole 10 again, the sludge in the sludge pipe is prevented from falling off, and meanwhile, the elastic partition plate 6 is recovered under the action of the ejector rod 14 pushed by the spring 13.

In this embodiment, as shown in fig. 1 to 3, a supporting plate 15 is further disposed in the first volume change chamber 7, the ejector rod 14 passes through the supporting plate 15 and abuts against the steel ball 12, the supporting plate 15 is fixedly disposed in the first volume change chamber 7, a guide hole is formed in the center of the supporting plate for the ejector rod 14 to pass through, and a sludge channel is formed around the guide hole, the supporting plate 15 guides the ejector rod 14, so that the situation that the ejector rod 14 deviates due to reciprocating motion to cause incapability of ejecting the steel ball 12 and cause backflow failure of sludge prevention and the flow of sludge is not hindered is avoided.

In the present embodiment, as shown in fig. 1-3, both ends of the inner tube 2 can be detachably mounted with end caps 16, and the end caps 16 are screwed with the inner tube 2, so as to facilitate replacement of damaged parts in the tube.

In this embodiment, as shown in fig. 1 to 3, flanges are respectively disposed at two ends of the outer tube, a filter frame is detachably mounted on the flange at the closed end of the outer tube, another flange is connected to the water inlet end of the sewage suction pipe, a filter screen is mounted on the filter frame, and the inner tube is located in the filter frame.

In this embodiment, as shown in fig. 1-3, two ends of the outer tube 1 are respectively provided with a flange 17, a filter frame 18 is detachably mounted on the first flange 17 at the closed end of the outer tube 1, a filter screen 19 is mounted on the filter frame 18, the inner tube 2 is located in the filter frame 18, the filter screen 19 prevents massive stones or weed branches from blocking the third through hole 11, so that sludge cannot enter the sludge inlet cavity 5, the outer tube 1 is mounted at the feeding end of the sludge suction tube through the flange 17, and air in the vacuum chamber 3 is discharged when the sewage suction truck works through a vacuum pressure system on the sewage suction truck.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a prevent vacuum pump soil pick-up car of silt backward flow, includes the car body, articulated on the frame of car body have the jar body that has the cover, its characterized in that: still articulated on the frame of car body have a pair of first pneumatic cylinder, and is a pair of first pneumatic cylinder is located respectively the both sides of the jar body, the piston rod of first pneumatic cylinder with jar body is articulated, the cover articulates on the jar body, it has a pair of second pneumatic cylinder to articulate on the lateral wall of the jar body, the second pneumatic cylinder is located respectively the both sides of the jar body, the piston rod of second pneumatic cylinder with the cover is articulated, the intercommunication is installed at the top of the jar body the blowdown pipe of the jar body, the end of intaking of blowdown pipe is installed and is stopped the end, the gas vent has been seted up at the top of the jar body, still install the vacuum pump on the frame of car body, the inlet end of vacuum pump pass through the pipeline with the gas vent is connected.

2. The vacuum pump sewage suction truck capable of preventing sludge backflow according to claim 1, characterized in that: the non-return head comprises an outer pipe with one end closed and an inner pipe with two ends closed, one end of the inner pipe is inserted into the closed end of the outer pipe, a vacuum chamber is formed between the inner wall of the outer pipe and the outer wall of the inner pipe, the inner cavity of the inner pipe is divided into a mud inlet cavity and a mud outlet cavity through a first partition plate, the mud outlet cavity is divided into a first volume change cavity and a second volume change cavity through an elastic partition plate, a first through hole communicated with the vacuum chamber is formed in the inner wall of the first volume change cavity, a second through hole communicated with the first volume change cavity and the mud inlet cavity is formed in the first partition plate, a third through hole is further formed in the inner wall of the mud inlet cavity, the third through hole is located outside the vacuum chamber, steel balls blocking the second through hole are mounted in the mud inlet cavity, a spring tightly abutting against the steel balls is further mounted in the mud inlet cavity, and an ejector rod is arranged on the, one end of the ejector rod, which is far away from the elastic partition plate, abuts against the steel ball.

3. The vacuum pump sewage suction truck capable of preventing sludge backflow according to claim 2, characterized in that: the first volume change cavity is also provided with a supporting plate, and the ejector rod penetrates through the supporting plate and abuts against the steel balls.

4. The vacuum pump sewage suction truck capable of preventing sludge backflow according to claim 2 or 3, wherein: and end covers are detachably arranged at two ends of the inner pipe.

5. The vacuum pump sewage suction truck capable of preventing sludge backflow according to claim 4, wherein: the both ends of outer tube are provided with the ring flange respectively, are located the outer tube blind end demountable installation has the filter frame on the ring flange, another the ring flange with the end connection of intaking of taking out dirty pipe, install the filter screen on the filter frame, the inner tube is located filter frame is interior.

6. The vacuum pump sewage suction truck capable of preventing sludge backflow according to claim 5, wherein: the first through holes are a plurality of and are uniformly distributed around the axial lead of the inner pipe.

7. The vacuum pump sewage suction truck capable of preventing sludge backflow according to claim 6, wherein: the third through holes are a plurality of and are uniformly distributed around the axial lead of the inner pipe.