CN212742866U - Sludge suction device of sewage suction truck - Google Patents

Abstract

The utility model relates to a special vehicle technical field discloses a soil pick-up car silt suction device, it is including the inner tube that inserts the outer tube, form real empty room between the interior outer tube, the inner chamber of inner tube is including advancing the mud chamber, first volume changes chamber and second volume and changes the chamber, first volume changes and is provided with first through-hole on the chamber, first volume changes and is provided with the second through-hole between chamber and the mud chamber of advancing, it is located the outdoor third through-hole of vacuum still to offer on the inner wall in mud chamber, the steel ball blocks up the second through-hole, the spring supports tight steel ball, last one end that is provided with of elastic baffle supports the ejector pin on the steel ball. The utility model has the advantages that: the air pressure in the first volume change cavity is smaller than the pressure in the second volume change cavity through the vacuum chamber, the elastic partition plate pushes the ejector rod to push the steel balls away from the second through holes, sludge outside the inner tube enters the sludge inlet cavity under the action of atmospheric pressure, and after the atmospheric pressure of the first volume cavity is restored, the spring enables the steel balls to block the second through holes again, so that the sludge in the sludge tube is prevented from falling.

Description

Sludge suction device of sewage suction truck

Technical Field

The utility model relates to a special vehicle technical field, especially a soil pick-up car silt suction device.

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 due to the stop operation of a vacuum sewage suction pump when the existing sewage suction truck sucks sewage, and when the sewage suction pipe is taken out to the ground, the residual sludge inside the sewage suction pipe is often easy to drop to the ground to pollute the environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a soil pick-up car silt suction device to when solving current soil pick-up and accomplishing to take out the soil pick-up pipe, remain the problem that intraductal mud dropped to ground polluted environment.

The purpose of the utility model is realized through the following technical scheme: a sludge suction device of a sewage suction truck comprises an outer pipe with one closed end and an inner pipe with two closed ends, wherein 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 sludge inlet cavity and a sludge outlet cavity through a first partition plate, the sludge 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 sludge inlet cavity is formed in the first partition plate, a third through hole is further formed in the inner wall of the sludge inlet cavity and is located outside the vacuum chamber, steel balls blocking the second through hole are mounted in the sludge inlet cavity, and a spring tightly abutting against the steel balls is further mounted in the sludge 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 first ring flange, 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. 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.

2. 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.

3. 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 cross-sectional view of FIG. 1;

in the figure, 1-an outer pipe, 2-an inner pipe, 3-a vacuum chamber, 4-a first partition board, 5-a mud inlet cavity, 6-an elastic partition board, 7-a first volume change cavity, 8-a second volume change cavity, 9-a first through hole, 10-a second through hole, 11-a third through hole, 12-a steel ball, 13-a spring, 14-an ejector rod, 15-a support plate, 16-an end cover, 17-a flange plate, 18-a filter frame and 19-a filter screen.

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 figures 1 and 2, a sludge suction device of a sewage suction truck comprises an outer pipe 1 with one closed end and an inner pipe 2 with two closed ends, wherein one end of the inner pipe 2 is inserted into the closed end of the outer pipe 1, a vacuum chamber 3 is formed between the inner wall of the outer pipe 1 and the outer wall of the inner pipe 2, the inner cavity of the inner pipe 2 is divided into a sludge inlet cavity 5 and a sludge outlet cavity by a first clapboard 4, the sludge outlet cavity is divided into a first volume change cavity 7 and a second volume change cavity 8 by an elastic clapboard 6, the elastic clapboard 6 is fixedly arranged in the sludge outlet cavity and is concave to the second volume change cavity 8, a first through hole 9 communicated with the vacuum chamber 3 is arranged on the inner wall of the first volume change cavity 7, the first through holes 9 are a plurality of and are uniformly distributed around the axial lead of the inner pipe 2, a second through hole 10 communicated with the first volume change cavity 7 and the sludge inlet cavity 5 is arranged on the first clapboard 4, a third through hole 11 is also, 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 arranged in the mud inlet chamber 5, springs 13 for tightly supporting the steel balls 12 are also arranged 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 along with the discharge of air in the vacuum chamber 3, 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 is gradually deformed so as to reduce the volume of the first volume change chamber 7, the elastic partition plate 6 pushes the ejector rod 14 to push the steel balls 12 away from the second through holes 10 when being deformed, the first volume change chamber 7 is communicated with the mud inlet chamber 5, and air flow moving towards the first volume change chamber 7 is, the mud outside the inner tube 2 enters the mud inlet cavity 5 under the action of atmospheric pressure, when the vacuum chamber 3 stops exhausting, the first volume cavity recovers atmospheric pressure, the spring 13 enables the steel ball 12 to block the second through hole 10 again, the mud in the mud tube is prevented from dropping, and meanwhile, the elastic partition plate 6 recovers under the action of the ejector rod 14 pushed by the spring 13.

In this embodiment, as shown in fig. 1 and 2, 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 is avoided, the steel ball 12 cannot be jacked open, backflow prevention failure of sludge is caused, and the flow of sludge is not hindered.

In the present embodiment, as shown in fig. 1 and 2, the end caps 16 are detachably mounted at both ends of the inner pipe 2, and the end caps 16 are screwed with the inner pipe 2, so that the damaged parts inside the pipe can be conveniently replaced.

In this embodiment, as shown in fig. 1 and 2, the both ends of outer tube 1 are provided with ring flange 17 respectively, demountable installation has filter frame 18 on the first ring flange 17 that is located the outer tube 1 blind end, install filter screen 19 on the filter frame 18, inner tube 2 is located filter frame 18, filter screen 19 has avoided blockking up third through-hole 11 such as massive stone or weeds branch, thereby lead to mud can't get into mud chamber 5, and outer tube 1 passes through ring flange 17 and installs the feed end at the mud suction pipe, when the soil pick-up car during operation through the vacuum pressure system on the soil pick-up car, discharge the air in the vacuum chamber 3.

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 (6)

1. The utility model provides a soil pick-up car silt suction device, includes one end confined outer tube and both ends confined inner tube, the one end of inner tube is inserted the blind end of outer tube, its characterized in that: the inner wall of the outer pipe and the outer wall of the inner pipe form a vacuum chamber, 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 formed in the inner wall of the mud inlet cavity and is located outside the vacuum chamber, a steel ball blocking the second through hole is installed in the mud inlet cavity, a spring tightly abutting against the steel ball is further installed in the mud inlet cavity, an ejector rod is arranged on the elastic partition plate, and one end, far away from the elastic partition plate, abuts against the steel ball.

2. The sludge suction device of the sewage suction truck as claimed in claim 1, wherein: 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.

3. The sludge suction device of the sewage suction truck as claimed in claim 1 or 2, wherein: and end covers are detachably arranged at two ends of the inner pipe.

4. The sludge suction device of the sewage suction truck as claimed in claim 3, 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, install the filter screen on the filter frame, the inner tube is located filter frame is interior.

5. A soil pick-up vehicle sludge suction device according to claim 4, wherein: the first through holes are a plurality of and are uniformly distributed around the axial lead of the inner pipe.

6. A soil pick-up vehicle sludge suction device according to claim 5, wherein: the third through holes are a plurality of and are uniformly distributed around the axial lead of the inner pipe.

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