Portable negative pressure system fly ash sampling device

Abstract

The utility model discloses a portable negative pressure system fly ash sampling device. The portable negative pressure system fly ash sampling device comprises a sampler main body, a push-pull cover plate, a sealing cover, a handle and a sampler front cover, the sampler main body adopts a circular tube structure with a sampling opening; the push-pull type cover plate adopts a semicircular pipe structure and is in sliding connection with the sampler main body; the push-pull type cover plate is provided with a spring bin, a spring is arranged in the spring bin, one end of the spring is fixedly connected with the sampler front cover, and the other end of the spring enters the spring bin and is fixedly connected with the push-pull type cover plate; and a barrier plate is fixedly arranged at the top of the push-pull cover plate. The push-pull type cover plate is matched with the barrier plate and the spring, so that the push-pull type cover plate is automatically opened and closed, the sampled fly ash is prevented from reentrainment of dust, and the operation is simple and practical; by arranging the sealing ring, the sampler main body and the negative pressure system form a sealed container during sampling, and the influence of negative pressure on sampling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of powder sampling devices, in particular to a portable negative pressure system fly ash sampling device. Background Art

[0002] Modern industrial and mining enterprises have increasingly higher requirements for sulfur dioxide emissions. Circulating fluidized bed dry flue gas desulfurization devices have been widely used as a highly efficient and low-cost desulfurization device. However, the device has many instabilities in the actual operation process. There is a large amount of circulating ash inside the Venturi cone section in its core area. If the humidity of the circulating ash is too high, large-scale agglomeration and other problems will occur. Therefore, production and operation personnel are required to regularly sample and check the dryness and humidity of the circulating ash. In addition, due to the negative pressure inside the Venturi cone section, the particle size of the circulating ash is small, resulting in the circulating ash being sucked into the system again during the manual grabbing process, making sampling difficult. Therefore, it is necessary to study the sampling of fly ash under the negative pressure system.

[0003] In the prior art, "A Fly Ash Sampler" with patent publication number CN207280819U includes an outer tube sleeve part and a piston part. The outer tube sleeve part includes an outer tube sleeve, a shutter, an ash receiving hopper and an ash storage hopper. The shutter is welded to the top of the outside of one end of the outer tube sleeve and communicated with the inside of the outer tube sleeve. The ash receiving hopper is welded to the shutter. The ash storage hopper is welded to the bottom of the outside of the other end of the outer tube sleeve and communicated with the outer tube sleeve. The piston part includes a piston, a handle and a piston rod. The piston is inside the outer tube sleeve, and its initial position is located at the lower end of the shutter. The handle is located outside the outer tube sleeve and is connected to the piston through the piston rod.

[0004] The above-mentioned prior art utilizes a piston extraction method to perform fly ash sampling. During operation, the piston needs to be rotated and pulled out, and the position of the piston and the ash hopper needs to be ensured, so the operation is not simple and practical enough. In addition, since the above-mentioned prior art needs to be rotated and pulled out, there will be gaps between the piston rod and the outer sleeve, and between the piston and the outer sleeve, so that the sampling will still be affected by negative pressure. Utility Model Content

[0005] The utility model provides a portable negative pressure system fly ash sampling device, which is used to solve the problems in the prior art that there is no relatively reliable fly ash sampling device, the operation is not simple and practical, and the sampling is affected by the negative pressure.

[0006] On the one hand, the utility model provides a portable negative pressure system fly ash sampling device, including: a sampler body, a push-pull cover, a sealing cover, a handle and a sampler front cover.

[0007] The sampler body adopts a round tube structure provided with a sampling port.

[0008] One end of the sampler body away from the sampling port is sealedly connected to the sealing cover, and one end of the sampler body close to the sampling port is fixedly connected to the sampler front cover.

[0009] The push-pull cover plate adopts a semicircular tube structure, and the push-pull cover plate is slidably connected to the sampler body.

[0010] When the push-pull cover plate slides to contact the sealing cover, the sampling port is exposed; when the push-pull cover plate slides to contact the front cover of the sampler, the sampling port is sealed.

[0011] The handle is fixedly connected to the sealing cover.

[0012] The push-pull cover is provided with a spring compartment, in which a spring is provided, one end of the spring is fixedly connected to the sampler front cover, and the other end enters into the spring compartment and is fixedly connected to the push-pull cover.

[0013] A blocking plate is fixedly arranged on the top of the push-pull type cover plate.

[0014] In a possible implementation, the sampler body is fixedly provided with a first slide rail, and the push-pull cover is fixedly provided with a second slide rail.

[0015] The push-pull cover is slidably connected to the sampler body via the second slide rail and the first slide rail.

[0016] In a possible implementation manner, felt is installed between the first slide rail and the second slide rail.

[0017] In a possible implementation, the first slide rail is a T-shaped slide rail, and the second slide rail is a C-shaped slide rail.

[0018] In a possible implementation, the sampling port is a semicircular tube-shaped notch.

[0019] In a possible implementation, the upper half of the sampler front cover has the same cross-sectional shape as the push-pull cover, and the lower half of the sampler front cover has the same cross-sectional shape as the lower half of the sampler body.

[0020] In a possible implementation, the sealing cover, the handle and the sampler front cover are all made of elastic material.

[0021] In a possible implementation, felt is provided at both ends of the push-pull cover.

[0022] The portable negative pressure system fly ash sampling device in the utility model has the following advantages:

[0023] The push-pull cover cooperates with the blocking plate and the spring to realize automatic opening and closing of the push-pull cover, thereby preventing the sampled fly ash from secondary dusting, and the operation is simple and practical. By setting a sealing ring, the sampler body and the negative pressure system form a sealed container during sampling, thereby avoiding the influence of negative pressure on sampling.

[0024] By installing the felt between the first slide rail and the second slide rail, air leakage from the rail when the push-pull cover plate slides is avoided.

[0025] The first slide rail is a T-shaped slide rail, and the second slide rail is a C-shaped slide rail, which improves the sliding stability and firmness.

[0026] The sampling area is increased by setting the sampling port as a semicircular tube-shaped notch.

[0027] By setting the upper half of the sampler front cover to have the same cross-sectional shape as the push-pull cover plate, and the lower half of the sampler front cover to have the same cross-sectional shape as the lower half of the sampler body, the cross-sectional shape of the fly ash sampling device always fits closely with the sampling hole of the negative pressure system during the process of entering and exiting the negative pressure system for sampling.

[0028] Both ends of the proposed push-pull cover plate are provided with felt, thereby improving the sealing performance between the push-pull cover plate and the sampler body and the sampler front cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A perspective structural diagram of a portable negative pressure system fly ash sampling device provided by an embodiment of the utility model;

[0031] Figure 2 Another perspective structural schematic diagram of a portable negative pressure system fly ash sampling device provided by an embodiment of the utility model;

[0032] Figure 3 A schematic diagram of the structure of a portable negative pressure system fly ash sampling device provided by an embodiment of the utility model after removing the front cover of the sampler from the right side;

[0033] Figure 4 A schematic structural diagram of a sampler front cover provided in an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1- sampler body, 2- push-pull cover, 3- sealing cover, 4- handle, 5- sampler front cover, 11- first slide rail, 12- sampling port, 21- second slide rail, 22- blocking plate, 23- spring chamber, 24- spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figures 1 to 4 As shown, an embodiment of the utility model provides a portable negative pressure system fly ash sampling device, comprising: a sampler body 1, a push-pull cover plate 2, a sealing cover 3, a handle 4 and a sampler front cover 5.

[0038] The sampler body 1 is a round tube structure provided with a sampling port 12 .

[0039] One end of the sampler body 1 away from the sampling port 12 is sealedly connected to the sealing cover 3 , and one end of the sampler body 1 close to the sampling port 12 is fixedly connected to the sampler front cover 5 .

[0040] The push-pull cover plate 2 adopts a semicircular tube structure, and the push-pull cover plate 2 is slidably connected to the sampler body 1 .

[0041] When the push-pull cover plate 2 slides to contact the sealing cover 3, the sampling port 12 is exposed, and when the push-pull cover plate 2 slides to contact the sampler front cover 5, the sampling port 12 is sealed.

[0042] The handle 4 is fixedly connected to the sealing cover 3 .

[0043] The push-pull cover plate 2 is provided with a spring compartment 23 , in which a spring 24 is provided. One end of the spring 24 is fixedly connected to the sampler front cover 5 , and the other end enters into the spring compartment 23 and is fixedly connected to the push-pull cover plate 2 .

[0044] A blocking plate 22 is fixedly arranged on the top of the push-pull cover plate 2 .

[0045] Specifically, in the present embodiment, the sampler body 1 and the push-pull cover plate 2 are both made of Q235B carbon steel pipe, and the outer diameter of the sampler body 1 is equal to the inner diameter of the push-pull cover plate 2 .

[0046] In this embodiment, the sampling process of the fly ash sampling device is as follows: Figure 1 As shown, at this time, the push-pull cover plate 2 is in contact with the sampler front cover 5, and the sampling port 12 is sealed; the fly ash sampling device is inserted into the sampling hole of the negative pressure system, and when the blocking plate 22 on the top of the push-pull cover plate 2 abuts against the sampling hole, it continues to be inserted, and the push-pull cover plate 2 begins to slide toward the sealing cover 3, and the sampling port 12 is gradually exposed in the negative pressure system until the push-pull cover plate 2 slides to contact the sealing cover 3, at which time the sampling port 12 is completely exposed in the negative pressure system, as shown in FIG. Figure 2 As shown; after being stationary for a period of time, the fly ash sample is stored inside the sampler body 1, and the fly ash sampling device is pulled out. During the pulling-out process, due to the action of the spring 24, the blocking plate 22 still presses against the sampling hole, and the push-pull cover plate 2 gradually slides toward the sampler front cover 5 until it contacts the sampler front cover 5, and the sampling port 12 is closed, and the sampling process ends.

[0047] The above description is to make the sampling process clear. In the above sampling process, the manual operation only includes: inserting the fly ash sampling device into the sampling hole of the negative pressure system and pulling it out after it remains stationary for a period of time. Therefore, the operation is simple and practical.

[0048] Exemplarily, the sampler body 1 is fixedly provided with a first slide rail 11 , and the push-pull cover plate 2 is fixedly provided with a second slide rail 21 .

[0049] The push-pull cover plate 2 is slidably connected to the sampler body 1 via the second slide rail 21 and the first slide rail 11 .

[0050] Exemplarily, felt is installed between the first slide rail 11 and the second slide rail 21 .

[0051] Specifically, by installing the felt between the first slide rail 11 and the second slide rail 21 , air leakage from the track when the push-pull cover plate slides is avoided.

[0052] Exemplarily, the first slide rail 11 is a T-shaped slide rail, and the second slide rail 21 is a C-shaped slide rail.

[0053] Specifically, in this embodiment, the sliding stability and firmness are improved by matching the T-shaped slide rail with the C-shaped slide rail. In other possible embodiments, other types of sliding connections may also be used.

[0054] Exemplarily, the sampling port 12 is a semicircular tube-shaped notch.

[0055] Specifically, in this embodiment, the upper half of the section of the sampler body 1 close to the sampler front cover 5 is cut off to obtain a semicircular tube-shaped notch, namely the sampling port 12, thereby increasing the sampling area.

[0056] Exemplarily, the upper half of the sampler front cover 5 has the same cross-sectional shape as the push-pull cover plate 2 , and the lower half of the sampler front cover 5 has the same cross-sectional shape as the lower half of the sampler body 1 .

[0057] Specifically, through the above arrangement, the cross section of the fly ash sampling device always fits the sampling hole of the negative pressure system during the process of entering and exiting the negative pressure system for sampling.

[0058] Exemplarily, the sealing cover 3, the handle 4 and the sampler front cover 5 are all made of elastic material.

[0059] Specifically, in this embodiment, the sealing cover 3, the handle 4 and the sampler front cover 5 are all made of rubber material.

[0060] Exemplarily, felt is provided at both ends of the push-pull cover plate 2 .

[0061] Specifically, through the above arrangement, air leakage caused by gaps between the push-pull cover plate 2 and the sampler body 1 and the sampler front cover 5 is avoided.

[0062] The embodiment of the utility model realizes automatic opening and closing of the push-pull cover plate by cooperating with the blocking plate and the spring, thereby preventing secondary dust from occurring in the sampled fly ash, and the operation is simple and practical; by arranging a sealing ring, the sampler body and the negative pressure system form a sealed container during sampling, thereby avoiding the influence of negative pressure on sampling.

[0063] By installing the felt between the first slide rail and the second slide rail, air leakage from the rail when the push-pull cover plate slides is avoided.

[0064] The first slide rail is a T-shaped slide rail, and the second slide rail is a C-shaped slide rail, which improves the sliding stability and firmness.

[0065] The sampling area is increased by setting the sampling port as a semicircular tube-shaped notch.

[0066] By setting the upper half of the sampler front cover to have the same cross-sectional shape as the push-pull cover plate, and the lower half of the sampler front cover to have the same cross-sectional shape as the lower half of the sampler body, the cross-sectional shape of the fly ash sampling device always fits closely with the sampling hole of the negative pressure system during the process of entering and exiting the negative pressure system for sampling.

[0067] Both ends of the proposed push-pull cover plate are provided with felt, thereby improving the sealing performance between the push-pull cover plate and the sampler body and the sampler front cover.

[0068] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0069] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A portable negative pressure system fly ash sampling device, characterized in that: include: Sampler body, push-pull cover, sealing cover, handle and sampler front cover; The sampler body adopts a round tube structure provided with a sampling port; One end of the sampler body away from the sampling port is sealedly connected to the sealing cover, and one end of the sampler body close to the sampling port is fixedly connected to the sampler front cover; The push-pull cover plate adopts a semicircular tube structure, and the push-pull cover plate is slidably connected to the sampler body; When the push-pull cover plate slides to contact the sealing cover, the sampling port is exposed; when the push-pull cover plate slides to contact the front cover of the sampler, the sampling port is sealed; The handle is fixedly connected to the sealing cover; The push-pull cover is provided with a spring compartment, in which a spring is provided, one end of the spring is fixedly connected to the sampler front cover, and the other end enters the spring compartment and is fixedly connected to the push-pull cover; A blocking plate is fixedly arranged on the top of the push-pull cover plate.

2. A portable negative pressure system fly ash sampling device according to claim 1, characterized in that: The sampler body is fixedly provided with a first slide rail, and the push-pull cover is fixedly provided with a second slide rail; The push-pull cover is slidably connected to the sampler body via the second slide rail and the first slide rail.

3. A portable negative pressure system fly ash sampling device according to claim 2, characterized in that: A felt is installed between the first slide rail and the second slide rail.

4. A portable negative pressure system fly ash sampling device according to claim 2, characterized in that: The first slide rail is a T-shaped slide rail, and the second slide rail is a C-shaped slide rail.

5. The portable negative pressure system fly ash sampling device according to claim 1, characterized in that: The sampling port is a semicircular tube-shaped notch.

6. The portable negative pressure system fly ash sampling device according to claim 1, characterized in that: The upper half of the sampler front cover has the same cross-sectional shape as the push-pull cover plate, and the lower half of the sampler front cover has the same cross-sectional shape as the lower half of the sampler body.

7. The portable negative pressure system fly ash sampling device according to claim 1, characterized in that: The sealing cover, the handle and the sampler front cover are all made of elastic material.

8. The portable negative pressure system fly ash sampling device according to claim 1, characterized in that: Both ends of the push-pull cover are provided with felt.

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