Improved back pressure plate

Abstract

The utility model discloses an improved back pressure plate in the technical field of dehydrators. The improved back pressure plate comprises a back pressure plate sealing plate, a sealing plate adjusting component and an incomplete sealing plate, the backpressure plate sealing plate is mounted at a sludge outlet of a sludge outlet box of the dehydrator, and is provided with a plurality of groups of through holes through which the spiral shaft penetrates; a plurality of groups of sealing plate adjusting components are arranged, are respectively mounted between the corners of the back pressure plate sealing plate and the sludge outlet box, and are used for adjusting the distance between the back pressure plate sealing plate and the sludge outlet; a plurality of groups of incomplete sealing plates are arranged, and the number of the incomplete sealing plates is equal to that of spiral shafts of the dehydrator; through the incomplete sealing plate mounted on the spiral shaft, the sludge outlet at the tail end is periodically covered and opened, so that moderate pressure at each part is ensured, the problem that a sludge cake is too wet due to insufficient pressure is avoided, the problem of blockage caused by overlarge pressure is also prevented, and the sludge cake is prevented from being blocked by the incomplete sealing plate through rotation of the incomplete sealing plate. And extruded mud cakes can be scraped in time, and continuous and efficient operation of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dewatering machine technical field, concretely is an improved back pressure plate. BACKGROUND

[0002] The laminated spiral sludge dewatering machine is a kind of high-efficiency sludge treatment equipment, is widely used in municipal sewage, food, beverage, chemical industry, leather, welding material, papermaking, printing and dyeing, pharmaceutical industry and other industries sludge treatment.The working principle is as follows: when spiral push shaft rotates, multiple solid active laminations arranged on the periphery of push shaft move relatively, under the action of gravity, water is filtered from the gap between the laminations that move relatively, realizes rapid concentration.The sludge that has passed concentration moves forward continuously along with the rotation of spiral shaft;Along the direction of mud cake outlet, the pitch of spiral shaft gradually becomes smaller, the gap between ring and ring also gradually becomes smaller, the volume of spiral cavity continuously shrinks;Under the action of back pressure plate at outlet, internal pressure gradually strengthens, under the push of spiral push shaft in succession and continuously, the moisture in sludge is extruded and discharged, the solid content of filter cake continuously increases, and finally realizes the continuous dewatering of sludge.

[0003] The laminated spiral sludge dewatering machine with double shafts has the following problems: due to the staggered arrangement of the two spiral shafts, the two groups of back pressure plates at the ends are in front and back positions, the back pressure plate close to the mud outlet can excessively extrude sludge, the mud cake and mud block in the cavity are hardened, and the mud is not smooth, thereby affecting the treatment capacity of sludge, and the water content of sludge discharged by the two back pressure plates is different.

[0004] Therefore, the utility model designs an improved back pressure plate to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an improved back pressure plate to solve the problems that due to the staggered arrangement of the two spiral shafts, the two groups of back pressure plates at the ends are in front and back positions, staggered arrangement, the back pressure plate close to the mud outlet can excessively extrude sludge, the mud cake and mud block in the cavity are hardened, and the mud is not smooth, thereby affecting the treatment capacity of sludge, and the water content of sludge discharged by the two back pressure plates is different.

[0006] To achieve the above object, the utility model provides the following technical scheme: an improved back pressure plate, including back pressure plate sealing plate, sealing plate adjusting component and incomplete sealing plate.

[0007] The back pressure plate sealing plate is installed at the sludge outlet of the sludge discharge box of the dewatering machine, and a plurality of groups of through holes penetrated by the spiral shaft are formed on the back pressure plate sealing plate;

[0008] The sealing plate adjusting member is provided with a plurality of groups, which are respectively installed between the edges and corners of the back pressure plate sealing plate and the sludge discharge box, and is used for adjusting the distance between the back pressure plate sealing plate and the sludge outlet.

[0009] The incomplete sealing plate is provided with a plurality of groups, the number of which is equal to the number of the spiral shaft of the dewatering machine, and the plurality of groups of incomplete sealing plates are respectively sleeved and installed on the corresponding spiral shaft, and the installation position is located between the back pressure plate sealing plate and the sludge outlet of the sludge discharge box.

[0010] Preferably, the plurality of incomplete sealing plates are eccentric circular or elliptical, and the adjacent incomplete sealing plates rotate with a distance tending to zero and always equal.

[0011] Preferably, the incomplete sealing plate comprises an incomplete sealing plate main body and a sleeved fixing part, the sleeved fixing part is fixed with the spiral shaft of the dewatering machine, and the contact surface between the fixing part and the spiral shaft is provided with anti-skid lines.

[0012] Preferably, the sleeved fixing part is split type, the split type sleeved fixing part is composed of two half circular rings with side wings, and is fixed by locking bolts at the side wing positions.

[0013] Preferably, the sealing plate adjusting member comprises a spring sleeve fixed with the sludge discharge box of the dewatering machine, a pipe sleeve is inserted into the spring sleeve, the outer end surface of the pipe sleeve abuts against the back pressure plate sealing plate, a long bolt penetrating the back pressure plate sealing plate, the pipe sleeve and the spring sleeve is arranged in the inner cavity of the spring sleeve, a nut abutting against the outer end surface of the spring sleeve is screwed at the end of the long bolt, and a spring supporting the pipe sleeve is arranged in the inner cavity of the sealing plate adjusting member.

[0014] Preferably, the sealing plate adjusting member is an electric push rod, and the two ends of the electric push rod are hinged between the inner cavity wall of the sludge discharge box and the back pressure plate sealing plate.

[0015] Preferably, a displacement sensor is further installed on the wall of the sludge discharge box, and the detection end of the displacement sensor is fixed on the back pressure plate sealing plate.

[0016] Preferably, the back pressure plate sealing plate comprises a back pressure upper sealing plate and a back pressure lower sealing plate, an upper arc-shaped lower notch is formed on the back pressure upper sealing plate, a lower arc-shaped clamping block is fixed on the back pressure lower sealing plate, the upper arc-shaped lower notch and the lower arc-shaped clamping block enclose a through hole for the spiral shaft to penetrate, and the back pressure upper sealing plate and the back pressure lower sealing plate can be spliced and formed by bolts and nuts.

[0017] Compared with the prior art, the utility model has the advantages that: the utility model novel structure is applicable to the dehydrator, through the incomplete sealing plate installed on the spiral shaft, the mud outlet at the end presents the periodic covering and opening state, which ensures that the pressure is moderate everywhere, avoids the mud cake being too wet due to the insufficient pressure, prevents the blockage problem caused by the excessive pressure, and through the rotation of the incomplete sealing plate, the extruded mud cake can be scraped in time, ensuring the continuous and efficient operation of the equipment; the incomplete sealing plate is locked and fixed with the spiral shaft and is limited in the limit position by the back pressure plate sealing plate, so that the incomplete sealing plate can not deviate seriously after slipping and affect the normal operation of the dehydrator.

[0018] Of course, implementing any product of the utility model does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0020] Figure 1 It is the spring type structure diagram of the sealing plate adjusting member of the utility model;

[0021] Figure 2 It is the explosion diagram of the spring type sealing plate adjusting member of the utility model;

[0022] Figure 3 It is the structure diagram of the split type incomplete sealing plate of the utility model;

[0023] Figure 4 It is the structure diagram of the back pressure plate sealing plate of the utility model;

[0024] Figure 5 It is the structure diagram of the split type back pressure plate sealing plate of the utility model;

[0025] Figure 6 It is the structure diagram of the sealing plate adjusting member of the utility model for the electric push rod;

[0026] Figure 7 It is the explosion diagram of the sealing plate adjusting member of the utility model for the electric push rod;

[0027] Figure 8 It is the structure diagram of the back pressure plate sealing plate of the utility model for the sealing plate adjusting member for the electric push rod;

[0028] Figure 9 It is the structure diagram of the incomplete sealing plate of the utility model for the oval shape.

[0029] Figure 10 The structure diagram of the eccentric circle of the incomplete sealing plate of the utility model is not completely sealed.

[0030] In the drawings, the components represented by each reference numeral are as follows:

[0031] 1-back pressure plate sealing plate, 11-back pressure upper sealing plate, 12-back pressure lower sealing plate, 13-upper arc-shaped lower notch, 14-lower arc-shaped clamping block, 2-sealing plate adjusting member, 21-spring sleeve, 22-tube sleeve, 23-long bolt, 24-spring, 25-electric push rod, 3-incomplete sealing plate, 31-incomplete sealing plate main body, 32-sleeved fixed part, 4-displacement sensor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one:

[0033] Please refer to Figures 1-5 , Figures 9-10 The utility model provides an improved back pressure plate technical scheme: an improved back pressure plate, including back pressure plate sealing plate 1, sealing plate adjusting member 2 and incomplete sealing plate 3.

[0034] The back pressure plate sealing plate 1 is installed at the mud outlet of the dehydrator, and a plurality of groups of through holes penetrated by the spiral shaft are formed on the back pressure plate sealing plate 1.

[0035] The sealing plate adjusting member 2 is provided with a plurality of groups, which are respectively installed between the edges and corners of the back pressure plate sealing plate 1 and the mud tank, and is used for adjusting the distance between the back pressure plate sealing plate 1 and the mud outlet.

[0036] The incomplete sealing plate 3 is provided with a plurality of groups, and the number of the plurality of groups is equal to the number of the spiral shafts of the dehydrator, and the plurality of groups of incomplete sealing plates 3 are respectively sleeved and installed on the corresponding spiral shafts, and the installation positions are located between the back pressure plate sealing plate 1 and the mud outlet of the mud tank.

[0037] Further, the plurality of incomplete sealing plates 3 are all eccentric circular or elliptical, and the adjacent incomplete sealing plates 3 rotate, the distance tends to zero and is always equal.

[0038] Further, the incomplete sealing plate 3 includes an incomplete sealing plate main body 31 and a sleeved fixed part 32, the sleeved fixed part 32 is fixed with the spiral shaft of the dehydrator through the bolt, and the contact surface of the fixed part 32 and the spiral shaft is provided with anti-skid lines.

[0039] Further, the sleeve fixing part 32 is split type, and the split type sleeve fixing part 32 is composed of two half circular rings with side wings, and is fixed by locking bolts at the side wing positions.

[0040] Further, the sealing plate adjusting member 2 comprises a spring sleeve 21 fixedly connected with the mud tank of the dehydrator, a pipe sleeve 22 is inserted into the spring sleeve 21, the outer end surface of the pipe sleeve 22 abuts against the back pressure plate sealing plate 1, a long bolt 23 penetrating through the back pressure plate sealing plate 1, the pipe sleeve 22 and the spring sleeve 21 is arranged in the inner cavity of the spring sleeve 21, a nut abutting against the outer end surface of the spring sleeve 21 is screwed at the end of the long bolt 23, and a spring 24 supporting the pipe sleeve 22 is arranged in the inner cavity of the sealing plate adjusting member 2. By adjusting the nut at the end of the long bolt 23, the spring 24 always provides support, so that the position of the largest gap of the back pressure plate sealing plate 1 can be adjusted.

[0041] Further, the back pressure plate sealing plate 1 comprises a back pressure upper sealing plate 11 and a back pressure lower sealing plate 12, an upper arc-shaped lower notch 13 is formed in the back pressure upper sealing plate 11, and a lower arc-shaped clamping block 14 is fixedly connected to the back pressure lower sealing plate 12; the upper arc-shaped lower notch 13 and the lower arc-shaped clamping block 14 form a through hole through which the spiral shaft penetrates, and the back pressure upper sealing plate 11 and the back pressure lower sealing plate 12 can be spliced and formed by bolts and nuts. In this way, the back pressure plate sealing plate 1 can be conveniently disassembled and assembled. Embodiment two:

[0042] Please refer to Figure 3 , Figures 5-10 The utility model provides an improved back pressure plate technical scheme: an improved back pressure plate, comprising a back pressure plate sealing plate 1, a sealing plate adjusting member 2 and an incomplete sealing plate 3.

[0043] The back pressure plate sealing plate 1 is installed at the mud outlet of the mud tank of the dehydrator, and a plurality of groups of through holes through which the spiral shaft penetrates are formed in the back pressure plate sealing plate 1.

[0044] The sealing plate adjusting member 2 is provided with a plurality of groups, is installed between the edge corners of the back pressure plate sealing plate 1 and the mud tank respectively, and is used for adjusting the distance between the back pressure plate sealing plate 1 and the mud outlet.

[0045] The incomplete sealing plate 3 is provided with a plurality of groups, and the number of the plurality of groups is equal to the number of the spiral shafts of the dehydrator; the plurality of groups of incomplete sealing plates 3 are respectively sleeved and installed on the corresponding spiral shafts, and the installation positions are located between the back pressure plate sealing plate 1 and the mud outlet of the mud tank.

[0046] Further, the plurality of incomplete sealing plates 3 are eccentric circular or elliptical, and when adjacent incomplete sealing plates 3 rotate, the distance tends to zero and is always equal.

[0047] Further, the incomplete sealing plate 3 comprises an incomplete sealing plate body 31 and a sleeved fixing portion 32, the sleeved fixing portion 32 is fixed with the spiral shaft of the dewatering machine through bolts, and the contact surface of the fixing portion 32 and the spiral shaft is provided with anti-skid lines, thereby effectively enhancing the friction force and stability between the components, greatly reducing the possibility of displacement, and ensuring the reliability and stability of the whole dewatering machine during operation.

[0048] Further, the sealing plate adjusting member 2 is an electric push rod 25, both ends of the electric push rod 25 are hinged between the inner cavity wall of the sludge discharge box and the back pressure plate sealing plate 1. The position of the back pressure plate sealing plate 1 can be adjusted by controlling the electric push rod 25, thereby saving time and effort.

[0049] Further, the displacement sensor 4 is further installed on the wall of the sludge discharge box, and the detection end of the displacement sensor 4 is fixed on the back pressure plate sealing plate 1. The extension length of the telescopic end of the electric push rod 25 is detected, so as to facilitate the staff to control.

[0050] One specific application of the embodiment is that: the improved back pressure plate is used, when the mud cake moves to the end, the incomplete sealing plate 3 applies balanced pressure to the cavity at the end. At this time, the sludge outlet at the end presents a periodic covering and opening state, which ensures that the pressure is moderate everywhere, avoids the mud cake being too wet due to insufficient pressure, and prevents the blockage problem caused by excessive pressure.

[0051] The back pressure plate sealing plate 1 can further apply reverse pressure to the sludge, that is, even if the incomplete sealing plate 3 cannot completely cover the outlet at a moment, the low water content of the sludge can also be effectively maintained. In addition, the rotation of the incomplete sealing plate 3 can timely scrape off the extruded mud cake, and ensure the continuous and efficient operation of the equipment.

[0052] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. An improved back pressure plate characterized by: Back pressure plate sealing plate (1), sealing plate adjusting component (2) and incomplete sealing plate (3) are included. The back pressure plate sealing plate (1) is installed at the sludge outlet of the sludge discharge box of the dewatering machine, and a plurality of groups of through holes penetrated by the spiral shaft are formed on the back pressure plate sealing plate (1). The sealing plate adjusting component (2) is provided with a plurality of groups, which are respectively installed between the corners of the back pressure plate sealing plate (1) and the sludge discharge box, and are used for adjusting the distance between the back pressure plate sealing plate (1) and the sludge outlet. The incomplete sealing plate (3) is provided with a plurality of groups, the number of which is equal to the number of the spiral shafts of the dewatering machine, and the plurality of groups of incomplete sealing plates (3) are respectively sleeved and installed on the corresponding spiral shafts and located between the back pressure plate sealing plate (1) and the sludge outlet of the sludge discharge box.

2. The improved backplate of claim 1, wherein: The plurality of incomplete sealing plates (3) are eccentric circular or elliptical, and the adjacent incomplete sealing plates (3) rotate with a distance tending to zero and always equal.

3. The improved backplate of claim 2, wherein: The incomplete sealing plate (3) includes an incomplete sealing plate body (31) and a sleeved fixing part (32), the sleeved fixing part (32) is fixed with the spiral shaft of the dewatering machine, the sleeved fixing part (32) is split type, the split type sleeved fixing part (32) is composed of two petals of semicircular rings with side wings, and is fixed by locking bolts at the side wing positions.

4. The improved backplate of claim 3, wherein: The contact surface of the fixing part (32) and the spiral shaft is provided with anti-skid lines.

5. The improved backplate of claim 1, wherein: The sealing plate adjusting component (2) includes a spring sleeve (21) fixed with the sludge discharge box of the dewatering machine, a pipe sleeve (22) is inserted into the spring sleeve (21), the outer end surface of the pipe sleeve (22) abuts against the back pressure plate sealing plate (1), a long bolt (23) penetrating the back pressure plate sealing plate (1), the pipe sleeve (22) and the spring sleeve (21) is arranged in the inner cavity of the spring sleeve (21), a nut abutting against the outer end surface of the spring sleeve (21) is screwed at the end of the long bolt (23), and a spring (24) supporting the pipe sleeve (22) is arranged in the inner cavity of the sealing plate adjusting component (2).

6. The improved backplate of claim 1, wherein: The sealing plate adjusting component (2) is an electric push rod (25), and the two ends of the electric push rod (25) are hinged between the inner cavity wall of the sludge discharge box and the back pressure plate sealing plate (1).

7. The improved backplate of claim 6, wherein: A displacement sensor (4) is further installed on the wall of the sludge discharge box, and the detection end of the displacement sensor (4) is fixed on the back pressure plate sealing plate (1).

8. The improved backplate of claim 1, wherein: The back pressure plate sealing plate (1) includes a back pressure upper sealing plate (11) and a back pressure lower sealing plate (12), an upper arc-shaped lower notch (13) is formed on the back pressure upper sealing plate (11), a lower arc-shaped clamping block (14) is fixed on the back pressure lower sealing plate (12), the upper arc-shaped lower notch (13) and the lower arc-shaped clamping block (14) enclose a through hole for the spiral shaft to penetrate, and the back pressure upper sealing plate (11) and the back pressure lower sealing plate (12) can be spliced and formed by bolts and nuts.

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